Saturday, August 12, 2017

Weather Discussion for Saturday August 12, 2016

Normal high and low temperatures for Aug 7-Aug 14 (high/low)...Redding 98/63, Chico 96/58, Quincy 90/43, Chester 86/44, Susanville 89/51, Grass Valley 89/57, Weaverville 95/49, Mt. Shasta 86/49, Yreka 92/53, Alturas 89/43

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.

Finally some changes in the large scale weather pattern.   High pressure continues over the west and today will be mostly sunny with some afternoon cumulus over the mountains.    However, this morning's satellite picture shows a low pressure trough and frontal system approaching Canada.   The southern end of this system will brush the far north end of California Sunday and late Monday with a few clouds and maybe an isolated thunderstorm near the Oregon border.  Sunday temperatures will be slightly cooler than and then on Monday temperatures will be a few degrees below normal.  Gusty south to southwest winds will occur this afternoon and Sunday afternoon.  

Tuesday high pressure begins to rebuild off the coast and will hold there for at least the next 5 days (see map below).  Having the high off the coast rather just to our east, like we have had for the last several weeks, will block subtropical moisture from moving northward and will give us periods of northerly winds.  Skies will mostly sunny with temperatures back to 4 to 8 degrees above normal by Thursday and Friday.

The Old Forecaster.

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