Saturday, May 18, 2019

Weather Discussion for Saturday May 18, 2019

Normal high/ low temperatures for May 13-May 20  (high/low) Redding 81/54, Chico 81/54, Quincy 73/38, Chester 69/35, Susanville 71/39, Grass Valley 72/46, Weaverville 77/40, Mt. Shasta 68/41 Yreka 73/41, Alturas 69/35

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 next low pressure area is approaching the coast and will spread rain over Northern California today and tonight with periods of rain or showers and a few thunderstorms Sunday.   Gusty south winds will precede this storm.  Snow level will drop to near 4500 feet by Sunday.

Monday we will have partly cloudy skies and then Monday night and Tuesday a low pressure area will drop southeastward along the coast and then inland over Northern California (see map below).  The north state will get scattered showers from this system with snow levels 5000 to 6000 feet.

Wednesday through next weekend high pressure will be along the coast with a low pressure area over the Great Basin.   The north state will see partly sunny skies with slightly below normal temperatures and periods of gusty north winds.

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Wednesday, May 15, 2019

Weather Discussion for Wednesday May 15, 2019

Normal high/ low temperatures for May 13-May 20  (high/low) Redding 81/54, Chico 81/54, Quincy 73/38, Chester 69/35, Susanville 71/39, Grass Valley 72/46, Weaverville 77/40, Mt. Shasta 68/41 Yreka 73/41, Alturas 69/35

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 storms is now just off the coast and moving slowly eastward.  This system will bring rain, locally heavy, to Northern California today and Thursday.   Snow levels will be above 6000 feet and gusty south winds will occur in some areas.

Friday and the first half of Saturday we will see partly cloudy skies with scattered showers mainly over the mountains. The next low pressure area will move through Saturday afternoon through early Monday (see map below) with more light to moderate rain and isolated thunderstorms.  Snow levels will be around 5000 feet. 

There will be a brief break late Monday and then another storm system Tuesday and Wednesday.

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Monday, May 13, 2019

Weather Discusson for Monday May 13, 2019

Normal high/ low temperatures for May 13-May 20  (high/low) Redding 81/54, Chico 81/54, Quincy 73/38, Chester 69/35, Susanville 71/39, Grass Valley 72/46, Weaverville 77/40, Mt. Shasta 68/41 Yreka 73/41, Alturas 69/35

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

 Big changes are coming in our weather.  The high pressure ridge that has been off the coast is weakening and moving eastward.  The jetstream across the Pacific is intensifying and pushing eastward.    This will lead to a low pressure trough along the coast with jetstream over Northern California from late Tuesday through early next week  (see map below).   During this time a series of frontal systems will bring rain...showers...and thunderstorms to Northern California.   Some areas of the north state will receive at least twice their normal May rainfall between Wednesday and the weekend.  

 Today will be partly to mostly sunny with near normal temperatures.  Clouds increase Tuesday and late Tuesday a weakening frontal system will bring rain to the coast, coastal mountains, and areas north of Redding.  A stronger storm will move through Wednesday and Thursday with rain and possible thunderstorms.  Snow levels will be above 6000 feet.   Friday through Saturday midday we will have partly cloudy skies with scattered showers mainly over the mountains.   Another strong storm system will move through Saturday night through Monday.  Snow levels by late Sunday should be near 5000 feet.



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Saturday, May 11, 2019

Weather Discussion for Saturday May 11, 2019

Normal high/ low temperatures for May 6-May 13  (high/low) Redding 80/52, Chico 80/49, Quincy 71/37, Chester 66/33, Susanville 69/39, Grass Valley 70/45, Weaverville 75/39, Mt. Shasta 67/38, Yreka 72/38, Alturas 68/33

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

Cooler and even a little wetter weather is on the way.  The high pressure ridge that has been over and along the coast for the past couple of weeks is weakening and moving eastward.  Today and Sunday we will see sunny skies with temperatures about like yesterday.  Winds will be light.   Monday we will see further cooling and a few clouds in the afternoon as a weak frontal system approaches the coast.   Tuesday there is a chance of an afternoon shower near the the Oregon border.

 Late Wednesday and Thursday a weak low pressure trough will be along and the coast and will move across the north state late Thursday and early Friday (see map below).  During this time Northern California will see partly cloudy skies with a few showers and thunderstorms over the foothills and mountains with a chance of a shower or thunderstorm in the valley.  Temperatures will cool to near normal.  

 Next weekend look partly to mostly sunny with near normal temperatures.
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Wednesday, May 8, 2019

Weather Discussion for Wednesday May 8, 2019

Normal high/ low temperatures for May 6-May 13  (high/low) Redding 80/52, Chico 80/49, Quincy 71/37, Chester 66/33, Susanville 69/39, Grass Valley 70/45, Weaverville 75/39, Mt. Shasta 67/38, Yreka 72/38, Alturas 68/33

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 off the coast and will hold there through Friday.  Northern California will be mostly sunny with temperatures 8 to 12 degrees above normal. Winds will be light.

 Friday a low pressure area will drop southward from central Nevada and end up over Southern California for the weekend (see map below).  This low may bring a few clouds to areas along the California  Nevada border.   However, the rest of the north state will stay sunny with temperatures cooling a few degrees.  Gusty north winds will occur in some areas.

 When you look at the map you notice the high has weakened and shifted eastward.   This weakening and eastward shift is forecast continue through next week and by Tuesday there is a low pressure trough along the coast with the jetstream over the north state.  Models are in agreement on this and if it does verify Tuesday through the end of next week will wetter and cooler than what you would expect for mid May.
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Monday, May 6, 2019

Weather Discussion for Monday May 6, 2019

Normal high/ low temperatures for May 6-May 13  (high/low) Redding 80/52, Chico 80/49, Quincy 71/37, Chester 66/33, Susanville 69/39, Grass Valley 70/45, Weaverville 75/39, Mt. Shasta 67/38, Yreka 72/38, Alturas 68/33

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 current weather pattern we are under shows little signs of changing.   Today high pressure is off the coast and a weak upper level low pressure area is over Southern California.   There will be some afternoon cumulus clouds today over the mountains with the chance of an isolated thunderstorm..  The valley stay mostly sunny.  Temperatures will be slightly above normal..  

 Tuesday through Friday the high pressure ridge will be off the coast.  The northstate will be sunny with some afternoon mountain cumulus.   Temperatures will slowly warm to near 10 degrees above normal by Friday.  Winds will be light Tuesday and Wednesday with increasing north winds Thursday and Friday.

 Another weak upper level low pressure area will form over Southern California by the weekend (see map below).  This could trigger some afternoon thunderstorms over the mountains east of the valley.  Temperatures will cool a few degrees.
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Saturday, May 4, 2019

Weather Discussion for Saturday May 4, 2019

Normal high/ low temperatures for Apr 29-May 6  (high/low) Redding 79/51, Chico 79/48, Quincy 70/36, Chester 64/32, Susanville 67/36, Grass Valley 68/44, Weaverville 73/36, Mt. Shasta 66/38, Yreka 69/38, Alturas 65/32

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 off the coast and will remain there for at least the next week.   However, if you look at this mornings's satellite picture (below) you can see a weak upper level low pressure area moving under the high pressure ridge and toward Southern California.  This low will move across Southern California Sunday afternoon and Monday.  Today we will have sunny skies, temperatures will be a few degrees above normal and winds will be light.  Sunday and Monday there will be a few clouds mainly over the foothills and mountains with isolated afternoon and evening thunderstorms over the mountains.   Temperatures will cool and will back to near normal by Monday.

 Tuesday through next weekend we will have sunny skies with daytime temperatures 4 to 8 degrees above normal.  Light to moderate north winds are expected. 
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