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SRNL Weather Center Fire Forecast (AM)

Date:
July 21, 2025
Forecast Period:
8:00 AM Today (July 21, 2025) through 8:00 AM Tomorrow (July 22, 2025)
Discussion:
A high pressure ridge continues to build westward. High heat and humidity today while the area is under a Heat Advisory from the National Weather Service. Maintain caution as category 5 heat stress will extend for multiple hours today. Tomorrow, a weak trough to the north will push a weak front southward into the area in the afternoon triggering widespread showers and thunderstorms with some potential to approach severe (marginal risk from the NWS).
Special Conditions:
Heat advisory in place. High temperatures and humidity will lead to heat illness if precautions are not taken.
Short Term Forecast
(** Scroll table to see more information **)
Today (July 21) Tonight (July 21) Tuesday (July 22)
Sky Condition Mostly Sunny then Partly Cloudy Partly Cloudy then Mostly Clear Mostly Sunny then Thunderstorms
Max/Min Temp 98 77 96
1st Period Wind Direction/Speed WNW 4-6, gusts to 12 W 3-5, gusts to 10 NNE 4-6, gusts to 12
2nd Period Wind Direction/Speed WNW 5-8, gusts to 15 NW 2-4, gusts to 7 NE 4-7, gusts to 14
Humidity % (min/max) 45 90 50
Stability B F C
Mixing Height (ft) 6500 300 6500
Transport Direction/Speed (mph) NW 15 NW 5 NNE 10
Precipitation Chance (%) 30 20 70
Precipitation Start-Stop After 3pm Before 1am After 1pm
Precipitation Type Isolated Showers and thunderstorms Isolated showers Afternoon showers and thunderstorms
Precipitation Amount <0.10 <0.10 0.10-0.30
Fog Potential None expected None expected None expected
Updated July 21, 2025 07:13 AM
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