Wednesday, July 26, 2017

Weather Discussion for Wednesday July 26, 2017

Normal high and low temperatures for July 24-July 31 (high/low)...Redding 100/67, Chico 97/61, Quincy 91/45, Chester 88/47, Susanville 90/52, Grass Valley 90/58, Weaverville 97/50, Mt. Shasta 89/52, Yreka 94/54, Alturas 90/46

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 weak upper level low pressure area that has been off the coast is now dissipating as it moves eastward and hits the large high pressure area that continues over the western U.S.  Today the north state will be mostly sunny with afternoon cumulus clouds over the mountains with a chance of showers and thunderstorms over Siskiyou, Modoc, and Lassen counties.  Temperatures will be about like yesterdays. 

Thursday through at least the mid part of next week a strong high pressure ridge will be...once again...over the western U.S. (see map below).   This means a return of temperatures 6 to 12 degrees above normal.   One thing to note....on this morning's satellite picture (below) you see 2 hurricanes in the southeastern Pacific.   These storms will be weakening and moving northward over the next several days.  Some of this moisture could reach northern California Sunday or Monday and trigger more mountains thunderstorms. 

The Old Forecaster.

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Monday, July 24, 2017

Weather Discussion for Monday July 24, 2017

Normal high and low temperatures for July 24-July 31 (high/low)...Redding 100/67, Chico 97/61, Quincy 91/45, Chester 88/47, Susanville 90/52, Grass Valley 90/58, Weaverville 97/50, Mt. Shasta 89/52, Yreka 94/54, Alturas 90/46

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 area continues over the western U.S.  There is a weak upper level low pressure area off the Northern California coast.  The low will remain off the coast through Tuesday and then dissipate Wednesday as it moves into the high pressure area.   This morning's satellite picture (below) shows the southerly flow around the west side of the high pressure area is pulling subtropical moisture (clouds) northward.   This moisture coupled with the instability of the low will result in afternoon and evening thunderstorms today and Tuesday over the higher elevations to the north and east of the valley.  Temperatures today and Tuesday will be normal to 5 degrees above normal.  Winds will be light in the morning and southerly in the afternoon.  Wednesday we will see mostly sunny skies with a chance of afternoon and evening thunderstorms along and east of the Sierra Cascade Crest.  Temperatures will be near normal.

Thursday through the weekend the high pressure ridge rebuilds over the west (see map below).  This will result in hotter weather.  

The Old Forecaster.

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Saturday, July 22, 2017

Weather Discussion for Saturday July 22, 2017

Normal high and low temperatures for July 17-July 24 (high/low)...Redding 99/67, Chico 97/61, Quincy 90/44, Chester 86/46, Susanville 90/52, Grass Valley 88/57, Weaverville 94/50, Mt. Shasta 87/52, Yreka 93/54, Alturas 90/46

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.

 Strong high pressure ridge continues over the west.  Today we will see high temperatures 10 to 15 degrees above normal with some areas of the north valley over 110 degrees.  The high pressure ridge will remain over western U.S. for the next week.  

This morning's satellite picture shows a weak upper level low off the coast.  This weak low will continue eastward and then dissipate late Tuesday and Wednesday as it runs into the high pressure ridge.  However, the southerly flow around the west side of the high pressure area will pull moisture northward.  This moisture coupled with the instability of the low pressure area will bring an increase in afternoon and evening cumulus clouds with thunderstorms over the mountains starting Sunday.  Sunday we will see a few afternoon thunderstorms over the Sierra Cascade area.   Monday and Tuesday there is a chance of afternoon and evening thunderstorms over all of the higher elevations of the north state.  Temperatures will start to cool Sunday and by Wednesday will be back to near normal.  

Late next week and next weekend temperatures will warm back above normal.  

The Old Forecaster.

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Wednesday, July 19, 2017

Weather Discussion for Wednesday July 19, 2017

Normal high and low temperatures for July 17-July 24 (high/low)...Redding 99/67, Chico 97/61, Quincy 90/44, Chester 86/46, Susanville 90/52, Grass Valley 88/57, Weaverville 94/50, Mt. Shasta 87/52, Yreka 93/54, Alturas 90/46

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 has shifted a little eastward.  This has allowed temperatures to cool to near normal.   Today and Thursday the inland areas of Northern California will be sunny with near normal temperatures.  Winds will be light.

Friday through early next week the high pressure ridge will rebuild over the western U.S. (see map below).  Skies will continue mostly clear...but there will be increased afternoon cumulus clouds over the mountains Sunday and Monday with a slight chance of a shower or thunderstorm.  Temperatures will warm back above normal.  

Longer range forecast models show the ridge weakening late next week which will bring a little cooling. 

The Old Forecaster.

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Monday, July 17, 2017

Weather Discussion for Monday July 17, 2017

Normal high and low temperatures for July 17-July 24 (high/low)...Redding 99/67, Chico 97/61, Quincy 90/44, Chester 86/46, Susanville 90/52, Grass Valley 88/57, Weaverville 94/50, Mt. Shasta 87/52, Yreka 93/54, Alturas 90/46

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 that has dominated our weather is beginning to weaken and move eastward as a low pressure trough moves into western Canada.  Today the inland areas of the north state will be sunny with temperatures a couple degrees cooler than yesterday.   Tuesday through Thursday temperatures will cool to normal or a couple of degrees below normal.  This means Redding should end its' run of 100 degree days.  Winds will be light in the morning and south to southwest in the afternoon.

Friday through the weekend the high pressure area will rebuild over the western U.S. (see map below).   This will warm temperatures back to above normal. 

The Old Forecaster.

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Saturday, July 15, 2017

Weather Discussion for Saturday July 15, 2017

Normal high and low temperatures for July 10-July 17 (high/low)...Redding 98/66, Chico 97/61, Quincy 90/44, Chester 86/46, Susanville 89/51, Grass Valley 88/57, Weaverville 94/50, Mt. Shasta 86/51, Yreka 92/53, Alturas 89/45

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 will be the 17th consecutive day that Redding will at or above 100 degrees.  Redding has be at or above 100, 28 days this year...we average approximately 40 days a year.  

The high pressure ridge is still holding over the west.  Today and Sunday the inland areas of the north state will be 4 to 8 degrees above normal with light to moderate southerly winds in the afternoon.  

Monday the high pressure area will shift a little eastward and hold there through Thursday (see map below).   Temperatures will start to cool Monday and by Wednesday should be down to about normal.  Redding could drop to 97 to 99 and break the 100 string.  Winds will be light.

Friday the high backs up over the west again and we will see a return of above normal temperatures for the weekend.  

The Old Forecaster.

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Wednesday, July 12, 2017

Weather Discussion for Wednesday July 12, 2017

Normal high and low temperatures for July 10-July 17 (high/low)...Redding 98/66, Chico 97/61, Quincy 90/44, Chester 86/46, Susanville 89/51, Grass Valley 88/57, Weaverville 94/50, Mt. Shasta 86/51, Yreka 92/53, Alturas 89/45

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 looking for a change in the weather to write about.  High pressure is still over the western and central U.S.   It will weaken a little late Sunday as a low pressure area moves into western Canada (see map below).  

The next 7 to 10 days the inland areas of Northern California will be clear. Daytime temperatures today through Sunday will be 3 to 8 degrees above normal and then cool back to near normal early next week.  Winds will be light. 

The Old Forecaster.

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