Wednesday, February 22, 2017

Weather Discussion for Wednesday February 22, 2017

Normal high and low temperatures for Feb 20-Feb 27 (high/low)...Redding 62/40, Chico 62/40, Quincy 53/27, Chester 48/23, Susanville 48/26, Grass Valley 56/34, Weaverville 56/30, Mt. Shasta 49/29, Yreka 53/28, Alturas 47/22

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.

The remains of the low pressure trough will move across Northern California today.  This will cause showers an possible thunderstorms this afternoon. Snow levels will be 2500 to 3500 feet.   Thursday the north state will see partly to mostly sunny skies with normal temperatures and light to moderate north winds.

Friday we begin to shift back to colder and not as wet weather pattern.   High pressure will be off the coast and the jetstream will be dropping southward from Alaska and the hooking inland over California (see map below).  Clouds will begin to increase Friday afternoon and then Saturday the first low pressure trough will move through.  This system will bring light precipitation to our area.   Snow levels will be 2000 to 3000 feet but down to 1000 to 1500 feet from Redding northward due to trapped cold air.   Sunday afternoon and Monday the next low pressure trough will move through.  This system will bring a little heavier precipitation to the area especially over Central California.   Snow levels will be 1500 to 2500 feet in the north and 3000 to 4000 feet in the Tahoe area.  

Skies will be clearing Tuesday as the high pressure ridge moves closer to the coast and dry weather should continue through the end of next week. 

The Old Forecaster

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Monday, February 20, 2017

Weather Discussion for Monday February 20, 2017

***WET AND WINDY TODAY AND TUESDAY***


Normal high and low temperatures for Feb 20-Feb 27 (high/low)...Redding 62/40, Chico 62/40, Quincy 53/27, Chester 48/23, Susanville 48/26, Grass Valley 56/34, Weaverville 56/30, Mt. Shasta 49/29, Yreka 53/28, Alturas 47/22

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.

Last blog it looked like the storm system would come through Sunday afternoon and Monday.   However, the system is split with the first system coming through last night and the next system due tonight and early Tuesday.  Rain with last night's system was heavier from Redding southward and this system was warm with the colder air remaining off the coast with the second storm.   Today we will see periods or rain or showers with gusty south winds.  Snow levels will be 6000 feet north and 7000 feet south.

The next system will move inland tonight.   Moderate to heavy precipitation is expected tonight and early Tuesday.  Snow levels will lower by Tuesday morning to 3500 to 4500 feet north and little higher south.  Strong gusty south winds will occur tonight and early Tuesday with gusts 55 mph in the valley and 65 mph over the higher elevations.   The precipitation will turn to showers Tuesday afternoon and end by evening.  

Wednesday and Thursday the north state will have partly sunny to partly cloudy skies with isolated snow flurries over the higher elevations Wednesday.

Friday we switch back to a colder weather pattern (see map below).   The jetstream will be dropping southward along the coast and then across Northern California.   A low pressure trough will move through Friday afternoon and Saturday.   This system will bring light precipitation to the area with snow levels 1500 to 2000 feet north and 2000 to 3000 feet south.  

The trough will be east of area by Sunday and we will have mostly sunny skies and cool temperatures. 

The Old Forecaster

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Friday, February 17, 2017

Weather Discussion for Friday February 17, 2017

Normal high and low temperatures for Feb 13-Feb 20 (high/low)...Redding 60/40, Chico 61/40, Quincy 52/27, Chester 46/23, Susanville 47/25, Grass Valley 56/35, Weaverville 55/30, Mt. Shasta 47/30, Yreka 51/27, Alturas 46/22

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.

A low pressure trough and frontal system is now moving into California.  This system will bring light to moderate rain to the north end of the state today and tonight, with heavier precipitation over Central and Southern California.  Snow levels will be 3500 to 4500 feet.   The precipitation turns to showers late tonight and Saturday looks partly cloudy with scattered showers mainly over the higher elevations.

Sunday afternoon and Monday the next system moves through the area.  This looks like a strong storm.   Rain will start Sunday with heavy rain Sunday afternoon through  early Monday.   Snow levels will be 2500 to 3500 feet north and 4000 feet south.  This system will also bring strong gusty south winds to the area Sunday and early Monday with gusts 55 mph in the north valley and 65 mph over the higher elevations.   The precipitation will turn to showers by midday Monday.  

A weaker storm system will move through the area late Tuesday and Wednesday with light precipitation. Snow levels will be about like the Sunday storm.   It looks like another storm could move through late Thursday and Friday.  

This week the blog will be updated on Friday Feb 17th, instead of Saturday.

The Old Forecaster

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Wednesday, February 15, 2017

Weather Discussion for Wednesday February 15, 2017

Normal high and low temperatures for Feb 13-Feb 20 (high/low)...Redding 60/40, Chico 61/40, Quincy 52/27, Chester 46/23, Susanville 47/25, Grass Valley 56/35, Weaverville 55/30, Mt. Shasta 47/30, Yreka 51/27, Alturas 46/22

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.

This week the blog will be updated on Friday Feb 17th, instead of Saturday.

Ref question yesterday....hard to compare years.   Probably '55, '64, and the 97/98 el nino year.

A frontal system is approaching the coast and will spread precipitation slowly eastward.  Moderate to heavy rain is expected over Northern California tonight and early Thursday with snow levels 5000 to 6000 feet north and a little higher south.  Gusty south winds will occur later today and tonight.   The precipitation will turn to showers Thursday morning and end by Thursday evening.

The next storm system will take a more southern track and move across Southern California late Friday and Saturday.   Northern California will get rain from this system Friday afternoon through early Saturday.  Snow levels will be 4500 to 5500 feet.  The precipitation will taper off Saturday morning and end by afternoon.

There will be a brief break late Saturday and early Sunday and then another low pressure trough and frontal system will move across Sunday afternoon and Monday (see map below) and will be followed by another system Tuesday and Wednesday.  The Sunday/Monday storm looks like it will bring moderate to heavy rain with snow levels 3500 to 4500 feet.   The Tuesday/Wednesday storm won't be as wet but will be colder.

The Old Forecaster

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Monday, February 13, 2017

Weather Discussion for Monday February 13, 2017

Normal high and low temperatures for Feb 13-Feb 20 (high/low)...Redding 60/40, Chico 61/40, Quincy 52/27, Chester 46/23, Susanville 47/25, Grass Valley 56/35, Weaverville 55/30, Mt. Shasta 47/30, Yreka 51/27, Alturas 46/22

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.

High pressure is still along and over the west coast.   However, it is beginning to weaken.  Today and Tuesday the north state will be partly sunny with high cloudiness. Temperatures will be near normal and winds will be light.

The high will breakdown Wednesday and the jetstream will run across the Pacific and over Northern California. (see map below).  This will start another "wet period" for Northern California.  The first frontal system will spread rain over the area Wednesday.  The precipitation will continue through midday Thursday.  Snow levels will be 5000 to 6000 feet in the north and 6000 feet in the south.  Heaviest precipitation will be Wednesday night and early Thursday.  Gusty south winds will precede this system.

There will be brief break late Thursday and then Friday and Saturday a stronger storm system will move through the north state with moderate to heavy precipitation.  Snow levels will drop to 3500 to 4500 feet by Saturday.  The precipitation turns to showers late Saturday.  

It looks like another frontal system will move through the area late Sunday and Monday.

The Old Forecaster

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Friday, February 10, 2017

Weather Discussion for Friday February 10, 2017

Normal high and low temperatures for Feb 6-Feb 13 (high/low)...Redding 61/40, Chico 59/38, Quincy 51/26, Chester 46/23, Susanville 46/24, Grass Valley 56/34, Weaverville 54/30, Mt. Shasta 48/27, Yreka 50/27, Alturas 46/21

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.

This week the blog will be updated on Friday the 10th instead of Saturday.

The main frontal band moved through yesterday.   However the low pressure trough is sill along the coast and will move across the north state today.   This trough will trigger showers and thunderstorms as it moves through. Snow levels will be 4000 to 5000 feet.   The showers will end tonight.

Saturday high pressure will be building along and over the coast.  We will have partly to mostly sunny skies with normal temperatures and light to moderate north winds.   The high pressure ridge will hold through Tuesday for continued partly to mostly sunny skies.   Temperatures will be above normal and winds will be light.

Wednesday the high will be breaking down as the jetstream...once again...takes aim at Northern California (see map below).   This means another period of wet and windy weather.   The first storm will bring precipitation to the area Wednesday night and Thursday and will be followed by another system on the weekend. 

The Old Forecaster

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Wednesday, February 8, 2017

Weather Discussion for Wednesday February 8, 2017

Normal high and low temperatures for Feb 6-Feb 13 (high/low)...Redding 61/40, Chico 59/38, Quincy 51/26, Chester 46/23, Susanville 46/24, Grass Valley 56/34, Weaverville 54/30, Mt. Shasta 48/27, Yreka 50/27, Alturas 46/21

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.

This week the blog will be updated on Friday the 10th instead of Saturday.

This morning's satellite picture (below) shows the low pressure area still off the coast sending bands of clouds toward Northern California.  The low is moving slowly eastward.  Heavy rain and strong gusty south winds are expected this afternoon through early Thursday afternoon. Snow levels will continue to be high....6000 to 7000 feet north and 7000 to 8000 feet south.  Winds gusts of 50 to 55 mph are expected in the north valley and 65 mph over the high elevations.  

The heaviest rain and winds should be over by mid afternoon Thursday, but periods of rain or showers will continue through Friday afternoon.   Snow levels will begin to drop Thursday afternoon and by early Friday will be down to 3000 to 4000 feet north and 4000 to 5000 feet south. 

The showers will end by Friday night and skies will be clearing as high pressure builds along and over the west coast.  This high pressure ridge should hold over our area through next Tuesday (see map below).  During this time we will see partly to mostly sunny skies and slightly above normal temperatures. 

It now looks like the high pressure ridge will breakdown near week and another low pressure trough will bring precipitation to the area late Wednesday. 

The Old Forecaster

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