Weather Discussion; The Old Forecaster

Chris Fontana, "The Old Forecaster" 4/23/2014

Normal high and low temperatures for this week April 21-April 27 (high/low)...Redding/Red Bluff 73/48, Chico 74/46, Quincy 66/34, Chester 60/30, Susanville 62/35, Grass Valley 63/40, Weaverville 69/35, Mt. Shasta 61/35, Yreka 65/35 Alturas 62/30.
The current weather pattern will last through midday Sunday.   The jetstream is running from the Gulf of Alaska into Northern California and is pushing a series of weak low pressure troughs or frontal systems across Northern California.  These systems aren't major precipitation producers but will bring showers and possible thunderstorms to all of the north state..'

This morning's satellite picture (below) shows the next system moving out of the Gulf of Alaska with quite a bit of cloudiness out ahead of it.  Today the north coast, Trinity, Siskiyou, Northern Shasta, and parts of Modoc county will be partly cloudy to cloudy with a few light showers.   The rest of the north state will start off sunny but will see increasing clouds during the day.  
Thursday the trough moves through the north state and all areas will see cloudy skies with light rain or showers.  Snow levels will be 6000 feet or higher.  Gusty south to  southwest winds are expected Thursday afternoon and evening.  This system will be out of the state by late Thursday but then a cold low pressure area will drop over Northern California.  Friday we will see partly cloudy to cloudy skies with showers and thunderstorms.   Snow levels will be 5000 feet.  Southwest to northwest winds with gusts to 30 mph in the valley and 40 mph in the higher elevations will precede this system.  The showers will be tapering off in the evening.

Saturday will be partly sunny to partly cloudy and then the last system will move through the north state Saturday night and early Sunday.  This system will bring showers to the coastal and northern mountains with a chance of a sprinkle elsewhere.

Sunday high pressure begins to rebuild along the coast (see map below) and we will see a return of sunny skies and above normal temperatures Monday and Tuesday.

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