Saturday, July 22, 2017

Weather Discussion for Saturday July 22, 2017

Normal high and low temperatures for July 17-July 24 (high/low)...Redding 99/67, Chico 97/61, Quincy 90/44, Chester 86/46, Susanville 90/52, Grass Valley 88/57, Weaverville 94/50, Mt. Shasta 87/52, Yreka 93/54, Alturas 90/46

This blog will be issued every Monday, Wednesday, and Saturday morning and updated if the weather is changing or critical or interesting weather events are occurring.

 Strong high pressure ridge continues over the west.  Today we will see high temperatures 10 to 15 degrees above normal with some areas of the north valley over 110 degrees.  The high pressure ridge will remain over western U.S. for the next week.  

This morning's satellite picture shows a weak upper level low off the coast.  This weak low will continue eastward and then dissipate late Tuesday and Wednesday as it runs into the high pressure ridge.  However, the southerly flow around the west side of the high pressure area will pull moisture northward.  This moisture coupled with the instability of the low pressure area will bring an increase in afternoon and evening cumulus clouds with thunderstorms over the mountains starting Sunday.  Sunday we will see a few afternoon thunderstorms over the Sierra Cascade area.   Monday and Tuesday there is a chance of afternoon and evening thunderstorms over all of the higher elevations of the north state.  Temperatures will start to cool Sunday and by Wednesday will be back to near normal.  

Late next week and next weekend temperatures will warm back above normal.  

The Old Forecaster.

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