Monday, January 30, 2017

Weather Discussion for Monday January 30, 2017

Normal high and low temperatures for Jan 30-Feb 6 (high/low)...Redding 60/37, Chico 59/38, Quincy 49/24, Chester 45/21, Susanville 43/22, Grass Valley 56/33, Weaverville 53/30, Mt. Shasta 48/27, Yreka 48/25, Alturas 44/19

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 strong high pressure ridge is still over the west coast.  Today we will see sunny skies with above normal temperatures and light wind.  Tuesday the high will begin to weaken as a low pressure trough develops along the coast.   Tuesday will still be dry with above normal temperatures but we will see increasing clouds during the day.

Wednesday and Thursday the trough will be along the coast (see map below) and will send a couple of frontal systems across the area.   Precipitation will start late Wednesday with moderate to heavy rain and gusty south winds late Wednesday night and Thursday.  Snow levels will be around 4000 feet north and 5000 feet south.  Friday the low will move across the state and be east of area by evening.   The precipitation will turn to showers in the late morning and end by evening.

Saturday and most of Sunday the north state will be partly to mostly sunny with near normal temperatures.  Another frontal system will bring rain to the area by late Sunday.

The Old Forecaster

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Saturday, January 28, 2017

Weather Discussion for Saturday January 28, 2017

Normal high and low temperatures for Jan 23-Feb 1 (high/low)...Redding 58/37, Chico 57/37, Quincy 47/23, Chester 44/21, Susanville 42/21, Grass Valley 54/32, Weaverville 49/28, Mt. Shasta 46/27, Yreka 47/24, Alturas 43/17

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 high pressure ridge is over the west coast.  Today through Monday Northern California will be partly sunny with some high cloudiness from storms moving by to our north.   Temperatures will be above normal and winds will be light. 

Tuesday and low pressure trough will develop just off the coast and will hold there through Friday. (see map below). Clouds will increase late Tuesday.   The trough will send frontal systems across the north state and periods of rain are expected Wednesday through Friday.  Snow levels will be 4500 to 5500 feet.  Gusty southerly winds are expected Wednesday and Thursday.  The low will be east of our area by Friday night and skies will be clearing.  

The weekend looks partly to mostly sunny with near normal temperatures.  

The Old Forecaster

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Wednesday, January 25, 2017

Weather Discussion for Wednesday January 25, 2017

Normal high and low temperatures for Jan 23-Feb 1 (high/low)...Redding 58/37, Chico 57/37, Quincy 47/23, Chester 44/21, Susanville 42/21, Grass Valley 54/32, Weaverville 49/28, Mt. Shasta 46/27, Yreka 47/24, Alturas 43/17

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 very weak frontal system is now approaching the coast.  This system will bring clouds to the area today and tonight with a few very light showers over the higher elevations.   

Thursday through Monday a high pressure ridge will be over the west coast (see map below).  The north state will see partly to mostly sunny skies.   Temperatures will be warming and by the weekend will be 8 to 12 degrees above normal.  

The high pressure ridge will breakdown next week and this will allow the jetstream or storm track to move back over the north state.   This means more wet weather.   It looks like the first frontal system will move through next Tuesday and Wednesday.

The Old Forecaster

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Monday, January 23, 2017

Weather Discussion for Monday January 23, 2017

Normal high and low temperatures for Jan 23-Feb 1 (high/low)...Redding 58/37, Chico 57/37, Quincy 47/23, Chester 44/21, Susanville 42/21, Grass Valley 54/32, Weaverville 49/28, Mt. Shasta 46/27, Yreka 47/24, Alturas 43/17

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 weak low pressure area is still off the Oregon coast.   This system will move southward and continue to weaken and should move across California tonight.  Northern California will be partly cloudy to cloudy with scattered showers today and this evening.   Precipitation amounts will be light with snow levels 1500 feet north and 2500 feet south.  The showers will end by Tuesday morning and clouds will be decreasing.  High pressure will slowly start to build along the coast Tuesday.   However, a weak frontal system will move through the area Wednesday.  We will see a few clouds from this system with a few light showers over the mountains.  

Thursday through at least early next week high pressure will be over our area (see map below).  With the exception of some night and morning valley fog the north state will be sunny with above normal temperatures. 

The Old Forecaster

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Saturday, January 21, 2017

Weather Discussion for Saturday January 21, 2017

***MORE RAIN/SNOW AND WIND***

Normal high and low temperatures for Jan 16-Jan 25 (high/low)...Redding 56/37, Chico 55/36, Quincy 46/23, Chester 43/21, Susanville 41/21, Grass Valley 55/33, Weaverville 49/28, Mt. Shasta 45/26, Yreka 45/24, Alturas 43/17

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.

Periods of rain or showers today as a residual low pressure area is along the coast.   Snow levels will be 2500 to 3500 feet.  The next low pressure trough will be approaching the coast today.   Most of this low pressure area will move through Sunday.   However, a weaker portion of it will remain along the coast Monday (see map below).   Moderate to heavy rain tonight and Sunday with snow levels 2500 to 3500 feet lowering to 1500 to 2000 feet by Sunday evening.  Strong and gusty south winds will occur tonight and early Sunday.   The precipitation will turn to showers Monday with snow levels 1000 to 1500 feet.   

Tuesday high pressure will begin to build over the area and this should end up being a fairly strong high pressure area.   This means Tuesday through the weekend should be sunny with temperatures above normal by Wednesday.

The Old Forecaster

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Wednesday, January 18, 2017

Weather Discussion for Wednesday January 18, 2017

***WET AND WINDY***

Normal high and low temperatures for Jan 16-Jan 25 (high/low)...Redding 56/37, Chico 55/36, Quincy 46/23, Chester 43/21, Susanville 41/21, Grass Valley 55/33, Weaverville 49/28, Mt. Shasta 45/26, Yreka 45/24, Alturas 43/17

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 first in a series of frontal systems is now moving into the area.  Rain, heavy at times, today with snow levels 3000 to 4000 feet north and 4000 to 5000 feet south (Tahoe).  Gusty south winds will occur today.   The precipitation turns to showers tonight.  Thursday the north state will have showers mainly over the higher elevations.  Snow levels will be 3000 to 4000 feet.

Thursday night and Friday the next system moves through with more rain and wind.  Snow levels will be 3000 to 4000 feet.  Saturday skies will be partly cloudy to cloudy with showers over the higher elevations, with a chance of one moving over the valley.   Snow levels will continue 3000 to 4000 feet.

Sunday the last storm in the series will move through, with more heavy rain and wind. (see map below).   Snow levels will be 2500 to 3500 feet.   The precipitation will turn to showers Sunday night and end Monday.   High pressure will bring clearing and drying Tuesday and Wednesday.

Ahead of each of these storms south winds will gust 45 to 55 mph in the north valley and 55 to 65 mph over the higher elevations.

Precipitation amounts for the period today through Monday night will be 5 to 10 inches over the higher elevations.  Note amounts will be lighter east of the Sierra Cascade Crest.   The valley see 1 to 3 inches with 3 to 5 inches in the Redding and Shasta Lake area.  

The Old Forecaster

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Monday, January 16, 2017

Weather Discussion for Monday January 16, 2017

***MORE WET WEATHER ON THE WAY***

Normal high and low temperatures for Jan 16-Jan 25 (high/low)...Redding 56/37, Chico 55/36, Quincy 46/23, Chester 43/21, Susanville 41/21, Grass Valley 55/33, Weaverville 49/28, Mt. Shasta 45/26, Yreka 45/24, Alturas 43/17

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 weak high pressure ridge continue off the coast.  Today we will see sunny skies with above normal temperatures and light winds.   The ridge begins to breakdown Tuesday and Wednesday through early next week we will be under a weather pattern like the one shown below.   A strong jetstream will run across the Pacific and over California.  Low pressure troughs and frontal systems will move through the area Wednesday, late Thursday and Friday and Sunday and Monday.   Each of these will bring precipitation to the area....heavy rain/snow with the late Thursday/Friday system.   Thursday and Saturday we will be between systems, but still will see scattered showers.  Snow levels with the first 2 storms will be 3500 to 4500 feet and 3000 to 4000 feet with the Sunday/Monday storm.  Strong gusty south winds will precede each system. 

The Old Forecaster

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Saturday, January 14, 2017

Weather Discussion for Saturday January 14, 2017

Normal high and low temperatures for Jan 9-Jan 16 (high/low)...Redding 55/35, Chico 54/36, Quincy 46/23, Chester 42/21, Susanville 41/21, Grass Valley 55/33, Weaverville 46/28, Mt. Shasta 44/25, Yreka 44/24, Alturas 41/17

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.

Mostly sunny today with temperatures a few degrees above normal.  The low pressure area and frontal system that is shown off the coast on this morning's satellite picture (below), will split apart and weaken as it moves eastward.   This system will bring a few clouds to the area tomorrow with a few light showers possible over the coast range.  Monday sunny skies return to slightly above normal temperatures and gusty north winds.  

The weak high pressure ridge that has been along the coast breaks down Tuesday.   Wednesday through Saturday we will be under a weather pattern like the one shown on the map below.  The jetstream will run across the Pacific and right over California.  A low pressure trough and frontal system will move through the area Wednesday with rain and gusty south winds.   Snow levels start out high but will drop to 4000 to 5000 feet by Wednesday afternoon.   The precipitation turns to showers Thursday but then a another storm system moves through late Thursday and Friday with moderate to heavy precipitation and gusty south winds.  Snow levels will be 3000 to 4000 feet.  This system will be east of our area by Saturday and we will see partly cloudy skies with a few showers. 

The Old Forecaster

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Wednesday, January 11, 2017

Weather Discussion for Wednesday January 11, 2017

Normal high and low temperatures for Jan 9-Jan 16 (high/low)...Redding 55/35, Chico 54/36, Quincy 46/23, Chester 42/21, Susanville 41/21, Grass Valley 55/33, Weaverville 46/28, Mt. Shasta 44/25, Yreka 44/24, Alturas 41/17

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 low pressure area that is currently along the Pacific Northwest coast (see satellite picture below) is dropping southward.  This system will bring showers to Northern California today and tonight.   Snow levels will be around 3000 feet.   There will still be a few lingering showers over the Sierras Thursday morning, but they will ending by midday and overall Thursday will be partly sunny to partly cloudy.   

Friday through Monday there will be a weak high pressure ridge along the coast with the jetstream to our north. (see map below).  Friday will be mostly sunny with a few clouds on the weekend from frontal systems moving by to our north.  

The high pressure ridge will breakdown next week and this will allow low pressure troughs and frontal systems to move through our area.   It looks like the wet weather will return Tuesday.

The Old Forecaster

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Monday, January 9, 2017

Weather Discussion for Monday Discussion for Monday January 9, 2017

Normal high and low temperatures for Jan 9-Jan 16 (high/low)...Redding 55/35, Chico 54/36, Quincy 46/23, Chester 42/21, Susanville 41/21, Grass Valley 55/33, Weaverville 46/28, Mt. Shasta 44/25, Yreka 44/24, Alturas 41/17

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 Northern California will see periods of rain or showers, with snow levels 3000 to 3500 feet north and 4000 to 5000 feet south.  Tuesday a stronger low pressure trough and frontal system will move into our area. (see map below).  This storm will bring heavy precipitation and gusty south winds to the north state,  Snow levels will be near 5000 feet north and 6000 feet south.  Southerly winds will gust to 40 to 45 mph in the valley and 55 mph over the higher elevations.  Showers Wednesday snow levels around 3000 feet.

A weak high pressure ridge will be over the area Thursday and we will have partly cloudy to partly sunny skies.  Friday a frontal system will bring some clouds to the area with showers over the areas north of Redding.  It looks like another frontal system will bring rain to the whole area Saturday night and Sunday. 

The Old Forecaster

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Saturday, January 7, 2017

Weather Discussion for Saturday January 7, 2017

Normal high and low temperatures for Jan 2-Jan 9 (high/low)...Redding 52/35, Chico 52/34, Quincy 44/22, Chester 40/19, Susanville 38/19, Grass Valley 52/31, Weaverville 45/27, Mt. Shasta 42/25, Yreka 43/24, Alturas 40/14

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 picture below is the view from my front door this morning.

The first in a series of frontal systems is now moving across Northern California.  Trapped cold is air is causing snow levels to drop to around 500 feet from Redding northward.  The heaviest precipitation will move through the area by early afternoon with lighter precipitation continuing through the night.  The big question is when will the cold air mix out or breakup?   At this time I expect to see the snow levels begin to rise this afternoon and should be 3500 to 4500 feet tonight.

A strong...wet...and warmer storm will move through Sunday.   This system will bring heavy rain and wind to the north state.   Snow levels will be 6000 feet north and 7500 feet south.  This means a lot of today's snow will be washed off and streams will be rising.   The storm will be moving out Monday and the precipitation will turn to showers. Snow levels Monday will be 4000 to 5000 feet.  

There will be brief break late Monday and early Tuesday and then another frontal system will spread precipitation over the area Tuesday night and Wednesday followed by another one Thursday night and Friday.  Snow levels with these systems will be around 4000 feet. 

The Old Forecaster

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Friday, January 6, 2017

Updated Weather Discussion for Friday January 6, 2017

 Normal high and low temperatures for Jan 2-Jan 9 (high/low)...Redding 52/35, Chico 52/34, Quincy 44/22, Chester 40/19, Susanville 38/19, Grass Valley 52/31, Weaverville 45/27, Mt. Shasta 42/25, Yreka 43/24, Alturas 40/14

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.

I will issue a more complete discussion tomorrow morning.

Here is tonights update...The current satellite picture (below) shows a low pressure area approaching the coast from the southwest.  A very cold airmass remains over Northern California.   Therefore, when the two collide we will be dealing....at least for 6 to 12 hours...with areas of trapped cold air from Redding northward.  Precipitation will start across Northern California after midnight and continue through Saturday.   On Sunday the main low pressure area will move across the state with moderate to heavy precipitation.  Snow levels from Redding northward will start out at 500 to 1000 feet.  Snow levels will be rising Saturday afternoon and by Sunday will be over 6000 feet.

The precipitation will turn to showers Monday and end Monday night and then another system will move into the area late Tuesday and Wednesday.

The Old Forecaster

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Wednesday, January 4, 2017

Weather Discussion update Friday January 6, 2017

Normal high and low temperatures for Jan 2-Jan 9 (high/low)...Redding 52/35, Chico 52/34, Quincy 44/22, Chester 40/19, Susanville 38/19, Grass Valley 52/31, Weaverville 45/27, Mt. Shasta 42/25, Yreka 43/24, Alturas 40/14

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.

Quick update this morning...The discussion below still pretty good on timing and the fact that we are entering a very wet patten.   The fly in ointment is once again "trapped cold air".  It now looks like the precipitation for the first system will start sometime after midnight.  Snow levels from Redding north will start out at 500 to 1000 feet and there could be several inches of snow down to that level before the cold air is broken up.   Snow levels still expected to rise to 5000 to 6000 feet Saturday night.  I will update this blog late this afternoon or this evening.

The low pressure area and frontal system are slowly moving east.  Today the north state will see partly cloudy to cloudy skies with showers, mainly over the higher elevations.   Snow levels will be 1500 to 2500 feet north and 3000 to 3500 feet south.  The showers will end by evening and skies will be clearing.  Thursday and most of Friday Northern California will be partly to mostly clear with light to moderate north winds.   

Clouds will begin increasing late Friday as a low pressure trough develops off the coast.  This trough will be along the coast Saturday and Sunday (see map below), during this time the north state will see periods of moderate to heavy precipitation with snow levels rising to 5000 to 6000 feet by Saturday afternoon. night.  Gusty south winds will occur Saturday and early Sunday.  

Monday we will see a brief break as the low moves east.   However, by Tuesday another low pressure trough will be along the coast and this system will bring more rain to our area Tuesday and Wednesday.  Snow levels will be 3500 to 4500 feet.

The 7 to 10 day forecast models continue a wet pattern for Northern California with more low pressure troughs expected to move through. 

The Old Forecaster

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