Lesson 5 Images

Clues from Climatology

Juneau, Alaska

Map of Alaska showing topography, key locations, and surrounding regions.

Juneau, Alaska.

The image is a detailed map of Alaska and surrounding areas, featuring various geographic and political elements. The map displays the topographical variations using shades of green, yellow, and orange to depict elevation changes. Key geographic features such as the Brooks Range, Alaska Range, and Kenai Peninsula are labeled. Bodies of water, including the Bering Sea, Bristol Bay, and Gulf of Alaska, are depicted in blue, and cities like Juneau are marked. The map also outlines surrounding regions, including parts of Canada to the east and Russia to the west. Latitude and longitude lines are indicated at the edges of the map. A legend at the bottom displays elevation scales in feet and meters.

Credit: maps.com

Located northwest of downtown Juneau

Satellite view of mountainous terrain around Juneau, Alaska, showing Juneau International Airport and surrounding geography.

Located northwest of downtown Juneau.

The image is a satellite map focusing on the region surrounding Juneau, Alaska. The map's landscape features multiple ranges of green-tinted mountainous terrain with visible ridges and valleys. A distinct river runs through the area, with branching waterways leading towards the ocean. Key geographical labels, such as Juneau, Juneau International Airport, and Taku Inlet, are marked. The map includes roads and highways like Egan Dr and Thane Rd, marked with thin white lines. A symbol indicating a location is visible near the airport. On the bottom left, a scale shows distances of 2 miles and 5 kilometers. The background consists of white snow-capped peaks, especially prominent in the northern parts.

Credit: Google Maps

30-hour GFS forecast

A weather map showing pressure systems and precipitation over the North Pacific and surrounding areas with a deepening low-pressure system south of Juneau.

30-hour GFS forecast.

The image is a weather forecast map displaying meteorological data. It features contours of pressure patterns across the North Pacific and surrounding regions. The map includes numerous lines indicating isobars, with several highlighted areas showing regions of high (H) and low pressure (L). Green shading indicates various levels of precipitation, with darker shades representing higher amounts. The map uses a color-coded scale on the left side to indicate precipitation levels, ranging from white to dark blue and red. The most prominent feature is a large area of low pressure with dense isobar lines centered southwest of Alaska, labeled "Deepening Low south of Juneau."

Credit: NCEP

24-hour SREF forecast

Weather map showing wind speeds in the North Pacific region with colorful contours and directional arrows.

24-hour SREF forecast.

The image is a weather map showing wind patterns and speeds across the North Pacific region, including parts of Alaska. The map contains a series of colorful contours representing wind speed probabilities. The colors range from blue, indicating lower probabilities, to red, indicating higher probabilities. Black wind barbs across the map depict wind directions. The map also displays latitude and longitude lines, and outlines of landmasses are visible in black. The top of the image contains text explaining the map specifications.

Credit: NCEP

12Z run

A weather observation chart for Juneau International Airport from November 17-18, 2011, detailing temperature, dew point, humidity, wind, sky cover, cloud base, and precipitation.

12Z run.

The image is a detailed weather observation chart for Juneau International Airport, dated November 17th to 18th, 2011, in UTC time. It is organized in a grid format with columns and rows, each representing different times and corresponding weather data. The chart displays information columns including: Time (UTC), Temp (°F), DewPt (°F), RH (%) for relative humidity, Wind (direction and speed), Sky Cover (percentage), and Precip (precipitation value). The grid is filled with numerical data and meteorological abbreviations, such as wind directions "ENE" (East-Northeast). The chart ends with a summary of min/max values: Max Temp, Min Temp, Max Wind, and Total Precipitation.

Credit: microclimates.org

22Z run

Weather forecast table for Juneau International Airport on 17 and 18 November.

22Z run.

The image is a weather forecast table for Juneau International Airport, covering 17 and 18 November, with data generated on 16 November 2011, 22:00 UTC. The table consists of rows and columns with weather data for every hour. The columns include: Time (UTC), Temp (°C), Dewpt (°C), Rel Hum (%), Wind Dir, Wind Speed (kt), Sky Cover, and Precip (in). Each row contains specific numerical data corresponding to these headings. The background is light with alternating white and light green shading for clarity.

Credit: microclimates.org

Wind rose

Wind rose plot for Juneau Intl Airport showing wind speed and direction for November, with calm conditions at 29.4%.

Wind rose.

The image is a wind rose plot representing wind speed and direction climatology at Juneau International Airport (ASOS) for November. The circular plot features concentric circles with percentages indicating frequency, from 0% at the center to 10% at the outer circle. The circles are divided into sectors corresponding to wind directions: North, Northeast, East, Southeast, South, Southwest, West, and Northwest, marked by arrows.

Different colors represent wind speed categories in miles per hour (mph): blue (2-4.9 mph), light blue (5-6.9 mph), green (7-9.9 mph), yellow (10-14.9 mph), orange (15-19.9 mph), and red (20+ mph). The center of the plot shows a "Calm" section with 29.4% frequency, indicating calm conditions when wind speeds are less than 2.0 mph.

Text in the top left provides the plot title and time bounds ranging from October 31, 1970, to November 30, 2021. A summary in the lower right section gives observation count, missing data, and average speed.

Credit: Iowa Environmental Mesonet

NAM MOS

Weather model output statistics with highlighted wind speed data.

NAM MOS

The image is a digital display of weather model output statistics, labeled as "PAJN NAM MOS GUIDANCE" with a date and time of 11/16/2011 at 1200 UTC. It contains rows and columns composed of alphanumeric text. The columns list hourly predictions and variables such as temperature and wind speed, marked with abbreviations like HR, TMP, CLD, and WSP, among others. In the "WSP" row, values are boxed in a red rectangle, highlighting specific wind speed data.

Credit: NCEP

GFS forecast valid at 18Z

Weather map with pressure patterns and precipitation over the North Pacific and North America.

GFS forecast valid at 18Z.

The image is a weather map showing pressure patterns and precipitation forecasts over the North Pacific Ocean and parts of North America. It features black contour lines that indicate atmospheric pressure levels (isobars) and are labeled with high ("H") and low ("L") pressure systems. Areas marked with "H" signify high pressure, and those with "L" represent low pressure. Green, blue, and red shaded areas depict precipitation with varying intensities, indicated by a color scale on the left. The map grid includes latitude and longitude lines, and there is notable labeling of a "Deepening Low south of Juneau."

Credit: NCEP

Back to Basics

Fort Lauderdale, Florida (KFLL)

Map of the United States with a dot marking Fort Lauderdale, Florida.

Fort Lauderdale, Florida (KFLL).

The image is a map of the contiguous United States in solid blue. A small red dot marks the location of Fort Lauderdale, Florida, located near the southeastern tip of the state. The map outline distinctly shows the state boundaries within the country. The location of Fort Lauderdale is emphasized with a small black text box containing its name. The rest of the states are uniformly shaded with no additional markings or labels.

Credit: Unknown

METARS from KFLL

METAR data strings with highlighted wind information.

METARS from KFLL.

The image displays a block of text containing a series of METAR data strings. Each line represents a weather observation from KFLL, providing details like time, wind speed, visibility, cloud cover, and other meteorological information. Most of the text is in standard black, except one wind observation "07020G24KT" within the last line, which is highlighted with a red outline. The lines are neatly aligned and appear in a monospaced font, typical for such data.

Credit: NCAR

Vertical Mixing and Wind Forecasting

Statistical guidance for this date

Weather data tables for KMSP with GFS and NAM guidance information and an NBS text bulletin.

Statistical guidance for this date.

The image contains three tables for KMSP, presenting both GFS and NAM MOS guidance formats dated 10/10/2022, as well as guidance from the NBM. It is organized into columns labeled with different data types, such as HR, N/X, TMP, WDR, WSP, etc. Each table contains numerical values spaced uniformly with some highlighted figures, indicating the maximum sustained wind speed forecasts from each model.

Credit: NCEP

Sea / Lake Breezes and Wind Forecasting

Miami, Florida

Map of the United States with Miami, FL highlighted by a red arrow.

Miami, Florida.

The image is a map of the United States, portrayed in a simple, stylized manner. The entire map is colored in a uniform blue shade, with individual state boundaries clearly outlined in darker blue lines. A small, red dot near the southeastern tip of Florida indicates the location of Miami. The dot is accompanied by a white text box with black text labeling "Miami, FL."

Credit: Unknown

18Z KMIA METAR

"Line of METAR weather data in black text on a white background."

18Z KMIA METAR.

The image displays a line of aviation weather data, formatted in a METAR code, with various alphanumeric values separated by spaces. The background is white, and the text is in black, making it clear and readable.

Credit: NCAR

Water temperatures

Map of sea surface temperatures in the North Atlantic and Caribbean regions dated 14 September 2011.

Water temperatures.

The image is a color-coded map showing sea surface temperatures in the North Atlantic, Caribbean Sea, and Gulf of Mexico regions, dated 14 September 2011. The map has a grid overlay, marking latitudes from 0° to 40°N and longitudes from 100°W to 20°W. The temperature scale on the right ranges from 20°C to 32°C, using various shades of blue, yellow, and orange. Cooler areas are depicted in blue, while warmer areas are represented in orange. Landmasses are colored in green, with a red outline marking the transition between land and sea. Notable regions include the Southeastern United States, the Caribbean islands, parts of Central America, and the northern coast of South America. Temperature variations in the ocean display a range of gradients from cooler blue near the shorelines to warmer orange and yellow tones towards the center of the map.

Credit: NOAA/AOML

20Z - 22Z KMIA METARS

Text of alphanumeric codes related to weather data.

20Z - 22Z KMIA METARS.

The image contains a series of lines with alphanumeric codes representing METAR reports. Each line includes sequences of letters and numbers, separated by spaces, denoting different weather parameters such as wind speed, visibility, weather conditions, temperature, and pressure.

Credit: NCAR

12Z NAM MOS

Weather forecast data table for KMIA on September 13, 2011, including temperature, cloud cover, and wind speed.

12Z NAM MOS.

The image is a MOS table with figures and letters indicating various weather parameters. This data is from the September 13, 2011 model run at 1200 UTC. The table is visually organized with rows and columns to represent different data points. The topmost line indicates the location (KMIA) and type of guidance (NAM MOS GUIDANCE). Various symbols and numbers further break down the forecast into hourly intervals spanning multiple days. Specific parameters, such as temperature (TMP), dew point (DPT), cloud cover (CLD), wind speed (WSP), and precipitation probabilities (P06, P12, etc.), are presented in rows. A notable feature is the highlighted section under WSP showing detailed wind direction data with numbers like "03 02 03 06 08 09 07 03 02". The data is presented against a light blue background.

Credit: NCEP

12Z GFS MOS

Blue screen displaying a weather data table labeled "KMIA GFS MOS GUIDANCE 9/13/2011 1200 UTC" with various meteorological values, including a highlighted section for wind speed.

12Z GFS MOS.

The image contains a blue screen displaying a MOS table. The table is labeled "KMIA GFS MOS GUIDANCE 9/13/2011 1200 UTC" at the top. Below the header, various weather parameters such as temperature (TMP), dew point (DPT), cloud cover (CLD), wind speed (WSP), and more are organized into rows. Each row is populated with numerical values corresponding to specific times and dates listed across the top. A black box highlights a section of the wind speed (WSP) row with values ranging from 03 to 11. The rest of the table includes zeros and other single-digit numbers for various weather parameters.

Credit: NCEP

Mountain-Valley Circulations and Wind Forecasting

Air flow up the mountain slope

Two-panel diagram showing air movement over a mountain slope from morning to mid-day, with airflow patterns and sun position.

Air flow up the mountain slope.

The image consists of two panels depicting the effects of solar radiation on a mountain slope, illustrating changes from morning to mid-day.

In the top panel, labeled "Morning," a sun is drawn on the right side, signifying the time of day. The image shows a mountain with a green, east-facing slope and a shaded west-facing slope in black. Red and blue lines indicate airflow, with arrows showing the direction, and text labels the "Initial shaded west-facing slope" and "Pressure Surfaces." In the upper left part, text describes early solar radiation effects on mountain slopes. A brown strip below represents the ground.

The bottom panel, labeled "Mid-Day," depicts the same mountain now entirely green as the sun moves overhead. The sun image is larger, and the airflow lines in red create circular patterns over the terrain, indicating thermally direct circulation. Additional text in the upper right corner explains the air movement dynamics as warm air rises and cool air sinks. Pressure surfaces are marked with black lines.

Credit: David Babb @ Penn State is licensed under CC BY-NC 4.0 (opens in a new window)

Flow of air down the mountain slope

Illustration of nighttime mountain landscape showing nocturnal inversion and drainage winds under a starry sky.

Flow of air down the mountain slope.

The image is an illustration depicting a nighttime mountain landscape under a starry sky with a crescent moon. In the center, there is a large green mountain. On both sides of the mountain, outlines illustrate airflow patterns labeled as "Nocturnal Inversion" and "Drainage Winds." The background is a deep purple and black gradient, simulating night. Above the mountain, white text provides an explanation of nocturnal inversion and drainage winds. The ground is a dark brown color.

Credit: David Babb @ Penn State is licensed under CC BY-NC 4.0 (opens in a new window)

Knoxville, Tennessee

A topographical map of southeastern United States with color gradients showing the Cumberland Mountains and Great Smoky Mountains.

Knoxville, Tennessee.

The image is a topographical map showing part of the southeastern United States. The map highlights varying elevations with color gradients ranging from green for lower elevations to red and purple for higher elevations. The area features include the Cumberland Mountains in the center-left part of the map and the Great Smoky Mountains towards the center-right. Notable locations such as Memphis, Jackson, Nashville, Oak Ridge, Crossville, Knoxville, and Bristol are marked with white dots and labeled. A red line outlines the state boundaries of Tennessee. The map includes latitude markers on the left and longitude markers at the bottom, with measurements in degrees. Additional labels indicate "Higher elevations north of Knoxville."

Credit: Earth System Research Laboratory

Grand Junction, Colorado

Topographic map showing Grand Valley and Grand Junction with elevation contours and colors indicating varied terrain elevations.

Grand Junction, Colorado.

The image is a topographic map featuring a portion of mountainous terrain in the State of Colorado. The map displays a variety of colors indicating elevation, with greens for lower elevations and purples for higher ones. Complex ridges and valleys are prominently detailed across the landscape, suggesting rugged terrain. Two labeled locations are present: "Grand Valley" and "Grand Junction," situated in the left part of the image. Contour lines visually depict elevation changes, creating a textured appearance. A red rectangular border surrounds the map, extending beyond the topographic features.

Credit: Johns Hopkins University

Grand Valley

Panoramic view of a desert landscape with a distant city and mountains under a blue sky.

Grand Valley.

The image depicts a panoramic view of a desert landscape with a clear blue sky overhead. In the foreground, there are sparse desert plants and a rocky outcrop with a twisted, leafless tree branch extending from the left edge. The midground features varying topography with rugged terrain, dusty hills, and sparse vegetation. A city is visible in the distance, nestled in a broad valley. In the background, a series of low mountains stretches across the horizon, partially enveloped by soft, wispy clouds.

Credit: Wikipedia

KGJT wind rose for November

Wind rose plot showing wind speed and direction at Grand Junction/Walker Field, CO.

KGJT wind rose for November.

The image is a wind rose plot displaying wind speed and direction data for Station #23066 at Grand Junction/Walker Field, CO. The circular plot contains concentric circles, each representing incremental percentage values from 4% to 20%. Blue dotted lines form the circles, with radiating lines indicating the four cardinal (N, E, S, W). Color-coded bars extend outward from the center, indicating wind direction and divided by color to represent different wind speed ranges: black (0.51-1.80 m/s), yellow (1.80-3.34 m/s), red (3.34-5.40 m/s), blue (5.40-8.49 m/s), green (8.49-11.06 m/s), and cyan (>11.06 m/s). A key in the bottom left corner explains the color codes.

Credit: Natural Resources Conservation Service

12Z surface analysis

Weather map of the U.S. showing isobars, fronts, and pressure systems, dated November 23, 2006.

12Z surface analysis.

The image is a weather map of the contiguous United States, displaying surface analysis data for November 23, 2006. It includes various meteorological symbols and lines representing high and low-pressure systems, fronts, and isobars indicating pressure in millibars. Red lines with numbers denote isobars, looping across the map in patterns. Blue lines with triangles and red lines with half-circles symbolize cold fronts and warm fronts, respectively. Blue "H" symbols mark high-pressure areas, and red "L" symbols indicate low-pressure areas, scattered across the map.

Credit: Weather Prediction Center

850-mb analysis at 12Z

Weather map showing geopotential heights at 850mb across the United States in various colors and contour lines.

850-mb analysis at 12Z.

The image is a weather map showing geopotential heights at 850mb in meters across the United States. The map is overlaid with contour lines and color gradients indicating different heights. The northwest and north-central areas are shaded in blue and teal, representing lower heights, while the southern regions are in yellow, indicating higher heights. An orange band appears along the Southeast, transitioning into a green area across the Midwest. Contour lines marked with specific height values, such as 1320, 1440, and 1560 meters, curve across various regions. A vertical color bar on the right provides a key from 1260 to 1620 meters. The map includes state boundary lines for reference.

Credit: Earth System Research Laboratory

21Z surface analysis

Weather surface analysis map of the United States with isobars, pressure systems, and fronts dated December 5, 2006.

21Z surface analysis.

The image is a weather surface analysis map dated December 5, 2006. It shows the continental United States with various meteorological symbols. Thin red lines indicate isobaric contours marking areas of equal atmospheric pressure, labeled with numbers like 1012, 1016, and 1020. Blue and red lines denote fronts; blue with triangles for cold fronts and red with semicircles for warm fronts. High (H) and low (L) pressure systems are marked with blue and red letters respectively. The map provides a detailed distribution of pressure systems, with closely packed isobars and symbols indicating weather patterns across different regions.

Credit: Weather Prediction Center

00Z 850 mb analysis

Color-coded contour map showing 850mb geopotential heights over North America with color gradients from red to purple.

00Z 850 mb analysis.

This image presents a color-coded contour map illustrating the 850mb geopotential heights over North America. The contours over the United States and Canada are marked with lines indicating specific heights, such as 1560 and 1320 meters. The title and color key are on the right, with colors transitioning from red to purple as the height decreases. The continent's outlines, including the United States, Canada, and parts of Mexico, are visible with state and provincial boundaries.

Credit: Earth System Research Laboratory

Effects of the Isallobaric Wind

18Z surface analysis from December 23, 2022

Weather map of North America with pressure systems and fronts from December 23, 2022.

18Z surface analysis from December 23, 2022.

The image is a detailed weather map dated December 23, 2022, showing North America. It includes isobars, represented by lines that curve across the map, indicating areas of equal atmospheric pressure. Pressure systems are marked with "H" and "L" depicting high and low pressure. A series of cold (blue triangles) and warm (red semicircles) fronts are also shown. Various colors on the map, such as greens and yellows, represent elevation changes. The map is covered in numerous weather symbols and numbers, denoting specific weather data like temperature, wind speed, and direction.

Credit: Weather Prediction Center

18Z GFS MOS and 23Z NBM forecasts from December 22 for Buffalo, New York

Weather guidance tables with numerical forecasts for KBUF station, including highlighted wind speeds.

18Z GFS MOS and 23Z NBM forecasts from December 22 for Buffalo, New York.

The image shows two sets of numerical weather guidance tables from the KBUF station, with data timestamps for 12/22/2022 at 1800 UTC and 2300 UTC. Each table contains columns for different variables such as temperature, wind direction, wind speed, and others, with values provided for each variable across multiple time intervals from December 23 to December 25. The table from 1800 UTC is labeled "GFS MOS GUIDANCE," and the table from 2300 UTC is labeled "NBM V4.0 NBS GUIDANCE." The highest wind speed forecasts in both tables are highlighted with red boxes.

Credit: NCEP

GEFS plumes for Buffalo

Graph of 10-meter wind speed forecasts from 12/22 to 12/30 with a peak on 12/24.

GEFS plumes for Buffalo.

The image is a graph titled "EMC's GEFS plumes for: KBUF," showing wind speed forecasts over time. The y-axis represents 10-meter wind speed in knots, ranging from 0 to 50, while the x-axis displays the date and time in UTC from 12/22 to 12/30. Several lines in varying shades of gray, and one bold black (the ensemble mean) and blue line (the operational run), depict different forecast models. A red oval highlights a section of the graph where wind speeds peak sharply behind the front on 12/23, reaching almost 50 knots, before decreasing to about 20 knots by 12/25. Text within the graph reads, "Large spread as wind speeds spike behind the front." The background has light gray vertical stripes for better visual division of dates.

Credit: NOAA EMC

18Z analysis of MSLP and surface winds

Map of northeastern U.S. with weather stations, a red "L" for low pressure, and green isobars.

18Z analysis of MSLP and surface winds.

The image is a detailed weather map focusing on parts of the northeastern United States. The map outlines state boundaries in orange and features numerous blue circles across the area, denoting various weather stations. The large red letter "L" near the center of the image represents a low-pressure system. Green contour lines are superimposed over the map, indicating isobars with numbers like 1006, 1008, 1010, and 1012, marking lines of equal atmospheric pressure. The map depicts parts of states including Pennsylvania, New Jersey, New York, and surrounding areas.

Credit: @ Penn State is licensed under CC BY-NC 4.0 (opens in a new window)

18Z radar image

Radar map showing precipitation with labeled supercells and varying intensity marked in colors.

18Z radar image.

The image is a radar map depicting precipitation over the Mid-Atlantic, with black background delineating state and county boundaries in orange lines. Various colors indicate different levels of precipitation intensity. Bright green, yellow, and orange patches are predominant, representing different precipitation levels. The northern area features extensive green and yellow patches, indicating moderate rain, while red areas suggest heavier precipitation. The term "SUPERCELLS" is labeled with arrows pointing towards central regions characterized by intense red clusters, suggesting severe storm activity. These supercells are distributed over and near a state boundary.

Credit: WSI

SPC storm reports

Map of U.S. showing storm reports from July 22, 2006, marked with colored dots for tornadoes, wind, and hail.

SPC storm reports.

The image is a map of the United States displaying storm reports from July 22, 2006. The map indicates reports of tornadoes, wind, and hail. Various colored dots mark the locations of these events: red for tornadoes, blue for wind reports, and green for hail reports. Most wind and hail reports are concentrated in the southeastern United States, while a few hail reports are spread across the Midwest. The lone tornado report is in northeastern Pennsylvania. The map includes an inset at the bottom left with the NOAA logo and the text "National Weather Service Storm Prediction Center, Norman, Oklahoma." A legend at the bottom specifies the color coding for the reports.

Credit: Storm Prediction Center

Mesoscale Discussion #1606

Weather advisory text about severe thunderstorm potential with some sections highlighted in red.

Mesoscale Discussion #1606.

CONCERNING...SEVERE THUNDERSTORM POTENTIAL

VALID 221409Z - 221545Z

THREAT MAY INCREASE FOR SVR TSTMS THROUGH EARLY
AFTERNOON...INCLUDING SUPERCELL TORNADO POTENTIAL. AREA IS BEING 
MONITORED FOR POSSIBLE WW.

SFC MESOANALYSIS SHOWS PRONOUNCED CYCLONE OVER E-CENTRAL PA...
WARM FRONT ARCHES NEWD OVER SERN NY BETWEEN BGM-MSV...THEN ESEWD 
ACROSS CT/MA BORDER REGION. EXPECT WARM FRONT TO DRIFT NWD AS SFC 
LOW MOVES ENEWD...TOWARD SERN NY. MEANWHILE SFC LOW SHOULD DEEPEN 
THROUGH EARLY AFTERNOON WITH APCH OF GREAT LAKES MID-UPPER 
TROUGH...RESULTING IN ENHANCED ISALLOBARIC FORCING AND BACKED FLOW 
NE-SE OF CYCLONE CENTER. 100 M HEIGHT FALL WAS NOTED IN 122 500 MB 
ANALYSIS AT PIT...WITH SFC PRESSURE FALLS BECOMING MORE PRONOUNCED E 
OF LOW. IN FCST SOUNDINGS...THIS YIELDS FAVORABLE LOW LEVEL 
HODOGRAPHS -- I.E. 0-1 KM AGL SRH 100-200 J/KG -- AND AT LEAST MRGL 
DEEP-LAYER SHEAR TO SUPPORT BOTH SUPERCELLS AND SMALL BOW ECHO 
STRUCTURES. ALTHOUGH CLOUD COVER WILL LIMIT RATE OF SFC DIABATIC 
HEATING OVER MUCH OF THIS AREA...BOUNDARY LAYER MOISTURE WILL REMAIN 
ABUNDANT...AND MODIFIED IAD/OKX RAOBS AND RUC SOUNDINGS SUGGEST 
EFFECTIVE PARCELS ALREADY ARE ROOTED AT SFC OVER MUCH OF DISCUSSION 
AREA. ONLY WEAK HEATING OF 2-4 DEG F IS NEEDED TO REMOVE REMAINING 
SBCINH.

..EDWARDS.. 07/22/2006
                            
Credit: Storm Prediction Center

Complications from Convection and Precipitation

Damaging winds from microbursts

Illustration of microburst wind patterns in side and aerial views showing wind dispersion and impact zones.

Damaging winds from microbursts.

The image consists of two sections illustrating the concept of microburst and its impact. The top section features a side view diagram showing wind flow patterns. Blue background with curved white arrows illustrates the downward and outward movement of winds. A green horizontal line represents the ground surface. Below is a yellow strip labeled "Area of damaging 'straight-line winds'."

The lower section presents a top-down perspective, overlaying aerial imagery of land. A large blue area shows a spread of arrows emanating from a central point labeled “‘Splash-down’ point," symbolizing winds dispersing from the impact center. The right side is labeled "Major Axis of Microburst," depicted with dotted textures within the blue area. Text denotes "Ground-level Streamlines" and "Area of damaging 'straight-line winds'" on the boundary.

Credit: David Babb @ Penn State is licensed under CC BY-NC 4.0 (opens in a new window)

Astoria, Oregon

Topographic map of Oregon showing elevation and city locations.

Astoria, Oregon.

The image is a topographic relief map of the state of Oregon, highlighting various cities and geographical features. The map displays elevation changes through a color gradient: green areas indicate lower elevations, transitioning to shades of yellow, brown, red, purple, and blue for higher elevations. Major cities such as Portland, Salem, Eugene, and Medford are marked with white dots and labeled with white text. The grid overlay shows latitude and longitude lines, with labels for both along the borders. The state’s borders are outlined in red, encompassing a range of terrains from coastal areas in the west to mountainous regions in the east.

Credit: Earth System Research Laboratory

Hinders the downdrafts actually reaching the ground

"Illustration of a cumulonimbus cloud with blue downdraft arrows, accompanied by explanatory text on weather stability."

Hinders the downdrafts actually reaching the ground.

The image illustrates a weather phenomenon involving precipitation downdrafts. On the right, a large cumulonimbus cloud is depicted against a light purple sky. The cloud is white with swirling patterns and gray shadows. Beneath the cloud, blue arrows signify the direction of downdrafts attempting to penetrate to the surface. A band of blue represents cool, stable air near the ground which prevents the downdrafts from reaching the surface. On the left side, black text on the purple background explains the stability of the lower troposphere.

Credit: David Babb @ Penn State is licensed under CC BY-NC 4.0 (opens in a new window)

WPC surface forecast map valid at 06Z on October 25

Weather map of the U.S. showing fronts, high and low pressure systems, and precipitation areas.

WPC surface forecast map valid at 06Z on October 25.

This is a weather map of the United States showing surface fronts and precipitation areas. The map includes isobars, high and low pressure systems, and frontal boundaries. High pressure areas are marked with blue "H" symbols, while low pressure areas are shown with red "L" symbols. The map outlines areas of precipitation with colored shading. Green indicates rain, blue indicates snow, pink for a mix of precipitation, and red hatchings for thunderstorms. A large area of precipitation extends from Texas to the Great Lakes, with a prominent focus on Milwaukee, which is labeled. Weather fronts include cold fronts marked with blue triangles, warm fronts with red semicircles, and stationary fronts with alternating red semicircles and blue triangles. The map also contains a legend explaining the colors and symbols used.

Credit: Weather Prediction Center

GFS forecast soundings valid at 06Z and 09Z on October 25

Side-by-side Skew-T log-P diagrams labeled 06Z and 09Z, displaying temperature and dew point data, with annotations on stability and evaporation effects.

GFS forecast soundings valid at 06Z and 09Z on October 25.

The image consists of two separate thermodynamic diagrams (Skew-T log-P diagrams), which display atmospheric temperature and humidity profiles. Both diagrams are drawn on a grid with red and green lines representing temperature and dew point data, respectively. Isotherms and isobars are also depicted, creating a tilted grid structure. The left chart is labeled “06Z,” and the right one “09Z,” indicating different forecast times. Both charts feature annotations, including "Not highly stable" and "Evaporation moistens and cools lower troposphere." The temperature scale runs from -100 to 40 degrees Celsius in increments of 10, and the pressure levels are measured in millibars from 100 to 1000. Wind speeds in knots are denoted vertically along the right side with fast wind speeds in the lower troposphere highlighted.

Credit: Air Resources Laboratory

Breezy conditions around 06Z

Weather model guidance data table for KMKE location with numerical forecasts and highlighted wind speed values.

Breezy conditions around 06Z.

The image is a detailed tabular representation of weather model guidance data related to atmospheric conditions across several time intervals. The table is dense with numbers and abbreviated labels, depicting forecasts for different parameters like cloud cover, temperature, wind direction, and speed for the location "KMKE." The table is divided into separate sections, each designated by different times (1800 UTC and 1200 UTC) and guidance models, such as "GFS MOS" and "NBM V4.0 NBS." Data is aligned in rows and columns with headings like "TMP," "CLD," and "WSP." Wind speed forecasts around 06Z are highlighted in each model to show the predicted breezy conditions. The background is plain, and the text is uniformly monospaced for clarity.

Credit: NCEP

Gusted as high as 40 knots

Image showing METAR weather report text with certain data points highlighted in red.

Gusted as high as 40 knots.

The image displays a snippet of METAR data, commonly used for aviation weather reports. The text consists of several lines of alphanumeric codes conveying weather conditions from a specific location. Some parts of the text are highlighted with a red border, which draws attention to wind gust remarks. The background is white, and the text is primarily in black font, with highlighted areas within red outlines containing critical information.

Credit: NCAR

Summary and Final Strategies

23Z NBM forecast for Buffalo from December 22

A detailed weather data table with numerical forecasts, including some highlighted numbers.

23Z NBM forecast for Buffalo from December 22.

The image is a weather data table presenting a series of numerical forecasts. It includes a collection of abbreviations and numeric data arranged in a grid format with rows and columns. The table is labeled at the top with "KBUF NBM V4.0 NBS GUIDANCE 12/22/2022 2300 UTC". Rows are identified with abbreviations such as "DT", "UTC", "FHR", "TXN", "XND", "TMP", "TSD", "DPT", "DSD", "SKY", "SSD", "WDR", "WSP", "WSD", and "GST". Some numbers in the "WSD" and "GSD" rows are highlighted in yellow. The table includes data for three days labeled "23", "24", and "25".

Credit: NCAR