Seasonal temperatures and at times breezy winds this week

July 1, 2019 – Near normal temperatures through Thursday as an upper level trough moves over the state. Breezy wind at times through the delta and over the Sierra crest. Warming temperatures Friday through the weekend. No precipitation expected through the extended period.

Discussion

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A trough of low pressure will remain over the west coast through the short term period Thursday. Daytime temperatures will remain right around season normals.

Shortwaves rotating around the low pressure system will bring high clouds at times but models now keep the low center solidly over the Pacific Northwest so believe any precipitation will remain north of the forecast area. Have therefore removed slight shower threat over the northern CWA that was in for Wednesday afternoon.

A moderate onshore flow will continue through the delta which will continue to bring a moderate delta breeze. Shortwaves rotating around the low will bring occasionally breezy winds to the Sierra Crest.

Extended Discussion (Friday through Monday)

Latest ensemble and operational runs indicate a weakening trough along the West Coast by next weekend. The result will be temperatures warming to above average with highs across portions of the Central Valley returning to triple digits.