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Extreme Heat and Tropical Storm Bertha Impacts

Dangerous heat will expand from the Gulf Coast into the Southern Plains and Desert Southwest through week's end. Additional extreme heat impacting the Pacific Northwest will shift to the northern Plains by the weekend. Tropical Storm Bertha is expected to continue to impact portions of the northern Gulf Coast from the western Florida Panhandle to southeastern Louisiana through tonight. Read More >

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Last Map Update: Wed, Jul 22, 2026 at 7:48:17 pm PDT

There is a marginal risk for severe thunderstorms (10-15%) today for areas highlighted in dark green, with the main threat being strong damaging winds, but also lightning and heavy downpours. Thunderstorm chances diminish the farther south you are where the atmosphere will be more dry.
Gusty winds east of the Cascades may overlap with low daytime relative humidities (RHs) to create periods of critical fire weather concerns through the weekend, but especially on Friday and Saturday. Daytime humidities may drop into single digits with winds gusting to 25-35 mph in parts of Siskiyou, Modoc Klamath and Lake counties.

 

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