Wednesday, February 20, 2019

Weather Discussion for Wednesday February 20, 2019

Normal high/ low temperatures for Feb 18-Feb 25  (high/low) Redding 61/40, Chico 62/40, Quincy 53/27, Chester 47/24, Susanville 48/25, Grass Valley 56/35, Weaverville 55/30, Mt. Shasta 48/28, Yreka 53/28, Alturas 47/21

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.

Note the satellite links will be not quite right until the new satellite is  fully operational.

A cold low pressure area is dropping southward into Northern California.  This system has limited moisture but will bring snow flurries to the foothills and mountains today and early Thursday with a chance of isolated showers in the valley.  

Skies will be clearing Thursday afternoon with clear skies and gusty north winds continuing through Friday.   Saturday the next low pressure area will be dropping southward.   However, this system will have a more offshore track (see map below).   This will allow this low to pickup more moisture.  Clouds increase Saturday with rain Saturday night and Sunday.   Snow levels will be 2000 feet north and 3000 feet south.   However, cold trapped air will drop the snow level to 500 to 1000 feet from Redding northward.  

A warmer storm system will move into the area Monday afternoon through Wednesday morning.   Rain will be heavier with snow levels rising to 4000 to 5000 feet north and 6000 feet south. 

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Monday, February 18, 2019

Weather Discussion for Monday February 18, 2019

Normal high/ low temperatures for Feb 18-Feb 25  (high/low) Redding 61/40, Chico 62/40, Quincy 53/27, Chester 47/24, Susanville 48/25, Grass Valley 56/35, Weaverville 55/30, Mt. Shasta 48/28, Yreka 53/28, Alturas 47/21

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.

Note the satellite links will be not quite right until the new satellite is  fully operational.

Cold weather pattern to continue over the west coast this week.   The high pressure ridge is along the coast with the jetstream dropping from Northern Alaska through western Canada and into California.  Low pressure areas dropping southward don't spend much time over the water so their moisture is very limited when they reach our area.  Today and Tuesday will be mostly sunny with clouds over the mountains.   Temperatures will be below normal with locally gusty north winds. 

Wednesday afternoon and early Thursday another storm system will move through the area (see map below).  This system will bring scattered snow showers to the foothills and mountains with a chance of an isolated rain shower in the valley. 

Sunny skies return Friday and then another relatively dry storm will move through  late Saturday and Sunday.

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Saturday, February 16, 2019

Weather Discussion for Saturday February 16, 2019

Normal high/ low temperatures for Feb 11-Feb 18  (high/low) Redding 59/40, Chico 61/38, Quincy 52/26, Chester 46/24, Susanville 47/24, Grass Valley 56/35, Weaverville 55/30, Mt. Shasta 48/26, Yreka 51/28, 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.

Sorry about the missed blog.  Had intermittent power outages but no cable, phone, or internet for 4 days. 

We are now in a weather pattern where the high pressure ridge is just off the coast and extends northward into Northern Alaska (see map below).  The jetstream comes over the top of the ridge and runs southward along the coast and then turns eastward over California.  This pattern brings cold air into Northern California but the storms are close to the coast as they drop southward and therefore can't pickup much moisture.  We will be in this pattern through Friday.

Today and Sunday a low pressure area will move through with snow over the foothills and mountains and scattered showers in the valley.  Snow levels will be around 1000 feet north and 2000 feet south.   Monday and Tuesday look partly sunny and cool with gusty north winds.  Another cold storm will move through Wednesday afternoon and Thursday.  Once again most of the precipitation will be in the foothills and mountains with scattered showers in the valley.  Snow levels will be 1000 to 150o feet north and 2000 feet south.

Next weekend looks dry with slightly warmer temperatures.

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Monday, February 11, 2019

Weather Discussion for Monday February 11, 2019

Normal high/ low temperatures for Feb 11-Feb 18  (high/low) Redding 59/40, Chico 61/38, Quincy 52/26, Chester 46/24, Susanville 47/24, Grass Valley 56/35, Weaverville 55/30, Mt. Shasta 48/26, Yreka 51/28, 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.

Well this is quite a complex weather pattern we will deal with over the next 4 days.   This morning''s satellite picture (below) shows another cold low pressure area dropping southeastward toward Northern California.  It also shows a large area of sub tropical moisture north of Hawaii moving northeastward which is forecast to merge with the cold low over Northern and Central California.  We also have quite a bit of cold air trapped in the valleys from Redding northward.  Where these 2 air masses merge there will be a well defined boundary with heavy precipitation along it.  Snow levels will be low north of this boundary and higher south.

Today we will see partly cloudy to cloudy skies with a few light showers along the coast range and from Redding northward.  Snow levels will be near 1000 feet due to trapped cold air.

Tuesday afternoon and Wednesday the storm system will move over Northern California.  Moderate to locally heavy precipitation will occur over the area.  Snow levels from Redding northward will be 2000 to 2500 feet locally 500 to 1000 fee in the canyons from Redding northward.  Snow levels south will be 3000 to  4000 feet.  The rain will turn to showers late Thursday and end Thursday night..  Snow levels Wednesday night and Thursday will be around 4000 feet north 6000 feet to the south.  A shift in this pattern as it develops could mean major changes.

Late Friday another low pressure trough will be dropping along coast.  This should keep the weekend showery with snow levels 3000 to 4000 feet (see map below).

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Saturday, February 9, 2019

Weather Discussion for Saturday February 9, 2019


Normal high/ low temperatures for Feb 4-Feb 11  (high/low) Redding 60/38, Chico 59/38, Quincy 50/26, Chester 46/23, Susanville 45/24, Grass Valley 56/33, Weaverville 54/29, Mt. Shasta 49/27, Yreka 50/26, Alturas 46/19

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 cold low pressure area is off the Oregon coast and will move across Northern California today.  Cold air didn't stay trapped in the valleys in the north so snow levels up here are a little higher than earlier forecast.  The low will bring periods of rain and showers to Northern California today with snow levels 1500 in the north and 2500 feet in the south.   Sunday the valley wil see some sun but there will be lingering snow showers over the areas north and east of the valley.  Gusty southwest to west winds will occur this afternoon. 

Cold low pressure areas will continue to drop southward across the north state for the next week (see map below).  This means more precipitation and low snow levels.   The next system will be along the coast Monday afternoon through midday Wednesday and will bring rain and showers to the area.  Snow levels will be 1000 to 1500 feet north and 2500 to 3000 feet to the south.   

There will be a brief break Thursday and then another cold low for Friday and weekend. 

There is still a chance of snow in the Redding area Monday and Tuesday but it will depend on how much residual cold air is trapped in the valleys. 

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Wednesday, February 6, 2019

Weather Discussion for Wednesday February 6, 2019

***LOW SNOW LEVELS FRIDAY AND THE WEEKEND***

Normal high/ low temperatures for Feb 4-Feb 11  (high/low) Redding 60/38, Chico 59/38, Quincy 50/26, Chester 46/23, Susanville 45/24, Grass Valley 56/33, Weaverville 54/29, Mt. Shasta 49/27, Yreka 50/26, Alturas 46/19

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.

Today and and Thursday Northern California will be partly cloudy to partly sunny with continued cold night time temperatures.  Friday the low pressure area shown in the Gulf of Alaska on this morning's satellite picture (below) will move through the north state.   This will be followed Saturday and Sunday by another cold low pressure area (see map below).  Snow levels with these systems will be 1000 to 1500 feet north and 2000 to 2500 feet south.  Due to trapped cold air in the canyons the snow level will be locally 500 feet from Redding northward Friday and Saturday.  The precipitation will turn to showers Sunday afternoon and end Monday during the day.

Sunny over the valley with a few clouds in the mountains Tuesday and Wednesday and then another storm is possible Thursday and Friday.

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Monday, February 4, 2019

Weather Discussion for Monday February 4, 2019

Normal high/ low temperatures for Feb 4-Feb 11  (high/low) Redding 60/38, Chico 59/38, Quincy 50/26, Chester 46/23, Susanville 45/24, Grass Valley 56/33, Weaverville 54/29, Mt. Shasta 49/27, Yreka 50/26, Alturas 46/19

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.

There is a cold low pressure area just off the coast and it will move across Northern California today.  This system will bring periods of rain or showers to the area today with the showers tapering off late today and tonight.  The showers will end by midday Tuesday.  Snow levels will be 1000 to 1500 feet in the north and 2000 to 2500 feet to the south. 

Skies will be clearing Tuesday afternoon with sunny to partly sunny skies Wednesday through midday Friday.  The airmass over the north state will  be very cold and low lying sheltered areas will have cold temperatures tonight through Thursday night with some areas in the north valley in the upper 20s. 

Clouds will begin to increase late Friday as the next cold low pressure area approaches the coast.  This system will be along the coast Saturday and move through Sunday and Monday.   There are several complicating factors with the low.   It is cold but if it stays close to the coast won't have a lot of moisture.   The other is the cold air that will be trapped in the valleys of Northern California.   This will cause very low snow levels.  At this time it looks like periods of rain or showers Saturday and Sunday with a few showers Monday morning.  Snow levels will be 500 to 1000 feet in the north and 2000 to 3000 feet south.   At this time precipitation amounts look light.

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