Major Heat Wave Expected for Two-Thirds of the U.S.

A dangerous and widespread summer heat wave is expected through this upcoming weekend across much of the Central and Eastern U.S. A large dome of high pressure will allow high temperatures to surge into the 90s and 100s in many locations, while heat indices will top 100 and approach 110 degrees or higher. There also will be no relief at night, as low temperatures remain in the upper 70s and 80s. Read More >

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Last Map Update: Wed, Jul. 17, 2019 at 4:16:25 am PDT

Watches, Warnings & Advisories


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	Gale Warning

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	Hazardous Seas Watch

Lightning 2018vs2019

One year ago today, July 15, 2018, 3162 cloud to ground lightning strikes were observed in our 9-county forecast area. Multiple fires started that day and many days of smoke and poor air quality followed. You can see on the timeline image that we haven’t had the big lightning events so far this year compared to last summer. The pink circles represent 1000 or more strikes in one day. We’ve had 3563 cloud to ground strikes in our forecast area so far since June 1, compared to 4316 strikes between June 1 2018 and July 15 2018. We hope we don’t see another lightning event like we did last summer, but we’re always in communication with our partner agencies to ensure everyone’s prepared ahead of a large lightning event.