Monday, February 19, 2018

Weather Discussion for Monday February 19, 2018

Normal high and low temperatures for Feb 18-Feb 25  (high/low) Redding 61/40, Chico 62/39, Quincy 52/27, Chester 47/23, Susanville 47/25, Grass Valley 55/34, 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 low pressure trough that brought light showers and snow flurries to the foothills and mountains yesterday is now moving eastward.  There will still be a few snow flurries over the mountains today but they will end by afternoon.   The low has brought a very cold airmass over the north state and tonight and Tuesday night will be very cold especially in the wind sheltered valleys.  Some north valley areas will be in the mid 20s.  Strong gusty north winds will occur today. 

Tuesday we will have partly sunny to partly cloudy skies with a snow flurry possible over the higher elevations.  Late Wednesday and Thursday another low pressure area will drop southeastward along the coast and then move into the Great Basin.  Like the last storm this system will not be over the water long enough to pickup much moisture so expect just a few mountain showers.  Snow levels will be low around 2000 feet. Friday and most of Saturday we will have mostly sunny skies with cool temperatures. 

We may finally see a change late Saturday and Sunday.  The past several storms have hugged the Canadian coast and then moved east.  The map below for Saturday shows the jetstream shifting a little westward.  This allows the low pressure area to come off the Alaskan coast and over the ocean before reaching Northern California.  This would mean the Sunday and Monday storm would still be cold but wetter.  

The Old Forecaster

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Saturday, February 17, 2018

Weather Discussion for Saturday February 17, 2017

Normal high and low temperatures for Feb 11-Feb 18  (high/low) Redding 60/40, Chico 61/39, Quincy 52/26, Chester 46/23, Susanville 46/24, Grass Valley 56/35, Weaverville 55/30, Mt. Shasta 48/ 2730, Yreka 51/28, Alturas 46/20

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 morning's satellite picture (below) shows a low pressure area along the Canadian and Pacific Northwest coasts.  This system is moving southeastward and its southern portion will move across Northern California late tonight and Sunday.   This system does not have a lot of moisture but it is cold and will bring showers to the foothills and mountains with snow levels around 2000 feet.  Gusty southwest to northwest winds will occur Sunday.  The showers will end by early Monday.   Monday and Tuesday the north state will be partly cloudy to partly sunny with gusty north winds on Monday.  A very cold airmass will still over the area and Monday night and Tuesday night will be the coldest nights so far this winter....especially in the wind sheltered valleys.  Some areas in the Northern Sacramento Valley will be in the upper 20s.  

Wednesday through next weekend we will be under a weather pattern like the one shown on the map below.  The jetstream or storm track will continue to run from off the Canadian coast into the Central U.S.   We will see partly to mostly sunny skies with daytime temperatures a few degrees above normal.  

The Old Forecaster

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Wednesday, February 14, 2018

Weather Discussion for Wednesday February 14, 2018

Normal high and low temperatures for Feb 11-Feb 18  (high/low) Redding 60/40, Chico 61/39, Quincy 52/26, Chester 46/23, Susanville 46/24, Grass Valley 56/35, Weaverville 55/30, Mt. Shasta 48/ 2730, Yreka 51/28, Alturas 46/20

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 are over western Canada this morning (see satellite picture below).  This system is dropping southeastward with the southern end brushing Northern California.  Today will be cloudy to partly cloudy with a few light showers over the mountains north and east of the valley.   Thursday through Saturday the high pressure ridge moves a little closer to the coast.  The north state will be mostly clear with above normal daytime temperatures.  Gusty north winds will occur Thursday and early Friday.  

Sunday and early Monday another trough will drop through western Canada into the Central U.S. (see map below).  Once again we will see some clouds with a few mountain showers north and east of the valley.  

Clear skies and warmer temperatures Tuesday and Wednesday.

The longer range models continue to hit at a wetter pattern toward the end of the month.

The Old Forecaster

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Monday, February 12, 2018

Weather Discussion for Monday February 12, 2018

Normal high and low temperatures for Feb 11-Feb 18  (high/low) Redding 60/40, Chico 61/39, Quincy 52/26, Chester 46/23, Susanville 46/24, Grass Valley 56/35, Weaverville 55/30, Mt. Shasta 48/ 2730, Yreka 51/28, Alturas 46/20

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 high pressure ridge is a little further off the coast.  Today and Tuesday we will have sunny skies with gusty north winds continuing through midday Tuesday.

Wednesday another low pressure trough will drop southward along the Canadian coast and into the Great Basin.  We will see a few clouds from this system with isolated light showers over the mountains north and east of the valley. 

Sunny Thursday and Friday with gusty north winds on Thursday.  Friday looks like the warmest day this week with daytime temperatures 10 degrees above normal.

The map below for Saturday shows another low pressure trough dropping southward along the Canadian coast.  The GFS (U.S.) model keeps this system along the coast and moves it into the Great Basin.  The other models pull it back to the west and then across Northern California Sunday and Monday.  This further west solution will be much wetter and colder for Northern California.   

The Old Forecaster

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Saturday, February 10, 2018

Weather Discussion for Saturday February 10, 2018

Normal high and low temperatures for Feb 4-Feb 11  (high/low) Redding 60/38, Chico 59/39, Quincy 50/26, Chester 46/22, Susanville 44/23, Grass Valley 56/34, Weaverville 54/29, Mt. Shasta 48/ 27, Yreka 49/26, 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.

High pressure is still off the coast.  Today will be sunny with temperatures a little cooler.  This morning's satellite picture (below) shows a low pressure area and frontal system moving across the Gulf of Alaska.  This system will reach Western Canada and the drop southward across Northern California and Nevada...eventually ending up over Southern California by midweek (see map below).

The low will move across the north state Sunday afternoon and early Monday.  This system has very limited moisture and will only bring light showers to the higher elevations north and east of the valley late Sunday and early Monday. Snow levels will be around 4000 feet.  Gusty southwest to northwest winds will occur Sunday.  

Late Monday through next weekend we will be back to a weather pattern with high pressure just off the coast.  The north state will have mostly sunny skies and above normal temperatures.  Strong and gusty north to northeast winds will occur Monday through early Wednesday.  

The Old Forecaster

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Wednesday, February 7, 2018

Weather Discussion for Wednesday February 7, 2018

Normal high and low temperatures for Feb 4-Feb 11  (high/low) Redding 60/38, Chico 59/39, Quincy 50/26, Chester 46/22, Susanville 44/23, Grass Valley 56/34, Weaverville 54/29, Mt. Shasta 48/ 27, Yreka 49/26, 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.

The high pressure ridge just off the coast continues to block frontal systems from reaching our area.  Today through Saturday we will see mostly sunny skies with daytime temperatures 15 to 20 degrees above normal.  Light to moderate north winds will continue.

Skies continue clear next week.  Temperatures will cool a little as low pressure area drops from Canada into the Central U.S. (see map below), and pulls a little cooler air into Northern California.  Strong and gusty north to northeast winds will occur Sunday through Tuesday.

Longer range forecast maps show the ridge holding at least through the 20th.

The Old Forecaster

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Monday, February 5, 2018

Weather Discussion for Monday February 5, 2018

Normal high and low temperatures for Feb 4-Feb 11  (high/low) Redding 60/38, Chico 59/39, Quincy 50/26, Chester 46/22, Susanville 44/23, Grass Valley 56/34, Weaverville 54/29, Mt. Shasta 48/ 27, Yreka 49/26, 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.

Still no major changes.   High pressure will be along or just off the west coast for the next 7 to 10 days.  We will continue to see mostly sunny skies with a few high clouds at times.   Today through Friday we have daytime temperatures 15 to 20 degrees above normal   Temperatures will cool on the weekend as low pressure drops into Nevada and the Great Basin (see map below).  Periods of gusty north winds will continue.

The Old Forecaster

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