Saturday, September 29, 2018

Weather Discussion for Saturday September 29, 2018

Normal high/ low temperatures for Sept 24-Oct 1  (high/low) Redding 88/55, Chico 87/52, Quincy 78/35, Chester 75/36, Susanville 74/40, Grass Valley 80/49, Weaverville 84/39, Mt. Shasta 77/41, Yreka 79/41, Alturas 76/33

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 closed low pressure area continues to move slowly eastward and is now just off the Northern California coast.   This system will move across Northern California later today with scattered showers and thunderstorms.  The low will be east of our area by midday Sunday and skies will be clearing.  

Monday another low pressure area will approach the coast but it slide southeastward and move inland over Southern California on Wednesday (see map below).   We will see clouds from this system Monday with a few showers Monday night and Tuesday.   

Temperatures today through Wednesday will be below normal.  Gusty south winds will occur today and again on Monday. 

Late next week high pressure will rebuild along the west coast for a return of warm and dry weather. 

The Old Forecaster

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Wednesday, September 26, 2018

Weather Discussion for Wednesday September 26, 2018

Normal high/ low temperatures for Sept 24-Oct 1  (high/low) Redding 88/55, Chico 87/52, Quincy 78/35, Chester 75/36, Susanville 74/40, Grass Valley 80/49, Weaverville 84/39, Mt. Shasta 77/41, Yreka 79/41, Alturas 76/33

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 continues over the Gulf of Alaska with a closed low pressure area south of it.  The low is moving slowly eastward.  Today and Thursday we will continue see temperatures 10 to 15 degrees above normal.  Gustly north winds will occur some areas this morning. 

Friday the low will be approaching the coast and temperatures will begin to cool and we will see a few clouds.  Saturday there will be a few showers over the higher elevations of the north state with a chance of an isolated shower in the valley.  Sunday we will see partly cloudy to partly sunny skies.  Temperatures Saturday and Sunday will be below normal.  

Monday a stronger closed low pressure area will be approaching the coast (see map below).   This system will bring more widespread showers to Northern California Monday and Tuesday and will keep temperatures below normal.

This system will be east of our area by Wednesday and high pressure will be back along the coast. 

The Old Forecaster

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Monday, September 24, 2018

Weather Discussion for Monday September 24, 2018

Normal high/ low temperatures for Sept 24-Oct 1  (high/low) Redding 88/55, Chico 87/52, Quincy 78/35, Chester 75/36, Susanville 74/40, Grass Valley 80/49, Weaverville 84/39, Mt. Shasta 77/41, Yreka 79/41, Alturas 76/33

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.

This morning's satellite picture shows a large high pressure ridge along the west coast and over the Gulf of Alaska. South of the high pressure area is a closed low pressure system.  This pattern is called a "Rex Block" because at times it can become very stable and block or divert the jetstream to the north. 

Today through Thursday the high will dominate our weather.  Northern California will see mostly clear skies with temperatures warming to 10 to 15 degrees above normal by Tuesday and Wednesday.  Gusty north winds will occur today and Tuesday. 

Friday the low will have moved closer to the coast (see map below) and it will move slowly across the north state during the weekend.  Temperatures will cool Friday and we will see increasing clouds.  Saturday and Sunday there will be scattered showers over the foothills and mountains with a chance of isolated showers in the valley.

A stronger low pressure system could slide under the high and over our area early next week. 

The Old Forecaster

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Saturday, September 22, 2018

Weather Discussion for Saturday September 22, 2018

Normal high/ low temperatures for Sept 17-Sept 24  (high/low) Redding 88/57, Chico 87/52, Quincy 80/35, Chester 75/36, Susanville 76/41, Grass Valley 80/49, Weaverville 84/40, Mt. Shasta 77/43, Yreka 80/42, Alturas 76/33

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.

This morning's satellite picture (below) shows a frontal system moving into the Pacific Northwest.  We will see a few clouds from this system today and early Sunday.  A couple of weeks back the extended forecast models were hinting that the jetstream might continue to drop southward and we could see cooler weather and maybe a few showers.  However, about a week ago they shifted and showed the jetstream heading back north.

Monday through the end of the week will be under a weather pattern like the one shown on the map below.  A high pressure ridge will be along the coast.   Northern California will have mostly clear skies and above normal temperatures.  Tuesday looks like the warmest day with high temperatures about 10 degrees above normal.  Gusty north winds will occur late Monday and Tuesday.

Longer range models show the low pressure area shown out to the west on the map below moving closer to the coast next weekend or early the next week.   This would bring cooling and maybe some mountain showers.

The Old Forecaster

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Wednesday, September 19, 2018

Weather Discussion for Wednesday September 19, 2018

Normal high/ low temperatures for Sept 17-Sept 24  (high/low) Redding 88/57, Chico 87/52, Quincy 80/35, Chester 75/36, Susanville 76/41, Grass Valley 80/49, Weaverville 84/40, Mt. Shasta 77/43, Yreka 80/42, Alturas 76/33

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.

No sign of rain but at least the smoke isn't as bad.   Today through the weekend we will continue to see frontal systems move by to our north across western Canada.   Northern California will be mostly clear with a few clouds this weekend.   Temperatures will be few degrees above normal.  Gusty north winds will occur today and Thursday in some areas.  

Next week a large high pressure ridge will pump up just off the coast (see map below).  The north state will continue dry with periods of north winds.  Temperatures will be above normal.

The Old Forecaster

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Monday, September 17, 2018

Weather Discussion for Monday September 17, 2018

Normal high/ low temperatures for Sept 17-Sept 24  (high/low) Redding 88/57, Chico 87/52, Quincy 80/35, Chester 75/36, Susanville 76/41, Grass Valley 80/49, Weaverville 84/40, Mt. Shasta 77/43, Yreka 80/42, Alturas 76/33

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.

 We will continue  under a early fall like weather pattern for the next week.  A weak low pressure trough will persist along the coast and the jetstream will remain just to our north.  Skies will be mostly clear with a few clouds at times from frontal systems moving by to our north.  Temperatures will be slightly below normal today and Tuesday and the a little above normal Wednesday through Friday.    Winds will be light except for gusty north winds on Wednesday.

The Old Forecaster

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Saturday, September 15, 2018

Weather Discussion for Saturday September 15, 2018

Normal high/ low temperatures for Sept 10-Sept 17  (high/low) Redding 91/58, Chico 90/54, Quincy 83/37, Chester 77/38, Susanville 79/42, Grass Valley 81/51, Weaverville 86/42, Mt. Shasta 77/43, Yreka 82/44, Alturas 79/35

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 low pressure trough that has been along the coast is now lifting northeastward.  It has pushed a few clouds over Northern California this morning but they will clear out during the day.  Temperatures today will be a few degrees below normal with southerly winds in the afternoon.

Monday through next weekend we be under a weather pattern like the one shown on the map below.   The jetstream will be just to our north.   Skies will be mostly clear with a few clouds at times from the systems moving by to the north.  Temperatures will be slightly below normal with south to southwest winds in the afternoons.

Models both show a stronger low pressure area along the coast after the 25th.  

The Old Forecaster

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Wednesday, September 12, 2018

Weather Discussion for Wednesday September 12, 2018

Normal high/ low temperatures for Sept 10-Sept 17  (high/low) Redding 91/58, Chico 90/54, Quincy 83/37, Chester 77/38, Susanville 79/42, Grass Valley 81/51, Weaverville 86/42, Mt. Shasta 77/43, Yreka 82/44, Alturas 79/35

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 low pressure trough is now along the coast and will linger there through the weekend (see map below).  This system has brought cooler air into the north state and could trigger a few showers over Siskiyou and Modoc  counties today and early Thursday.  Elsewhere skies will be clear for the the week with temperatures contining below normal.   Gusty southwest to northwest winds will occur today.  

Extended forecast models look dry through the next 10 to 14 days.

The Old Forecaster

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Monday, September 10, 2018

Weather Discussion for Monday September 10, 2018

Normal high/ low temperatures for Sept 10-Sept 17  (high/low) Redding 91/58, Chico 90/54, Quincy 83/37, Chester 77/38, Susanville 79/42, Grass Valley 81/51, Weaverville 86/42, Mt. Shasta 77/43, Yreka 82/44, Alturas 79/35

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 high pressure area that has been over our area is beginning to weaken.   Today will be sunny/smoky with temperatures a little cooler.  This morning's satellite picture (below) shows a low pressure trough along the Canadian coast.  This system will move southward and be off the Northern California coast by late Tuesday.  The trough will move slowly across the area Wednesday and Thursday (see map below).  This is a weak system but will bring a few clouds to the area with isolated showers and thunderstorms possible over the higher elevations north of Redding on Wednesday and Thursday.  Temperatures will cool and will be several degrees below normal Wednesday through Friday.   Gusty southwest to northwest winds will occur Tuesday and Wednesday. 

The trough will be east of our area by Friday and the weekend looks clear with near normal temperatures. 

The Old Forecaster

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Saturday, September 8, 2018

Weather Discussioni for Saturday September 8, 2018

Normal high/ low temperatures for Sept 3-Sept 10  (high/low) Redding 94/59, Chico 92/56, Quincy 84/38, Chester 81/40, Susanville 81/45, Grass Valley 84/53, Weaverville 89/43, Mt. Shasta 81/45, Yreka 85/46, Alturas 82/37

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.

Once again Redding is having the "summer of smoke".  High pressure is still over our area and will hold there through Monday.   Inland areas will clear/smoky with temperatures a few degrees above normal and southwest to northwest winds in the afternoons.  

The high begins to weaken Monday afternoon as a low pressure trough drops slowly southward off the coast.  This low will be just off the coast by Wednesday and move across the north end of the state Thursday (see map below).  Unfortunately this is a weak system with not much moisture.  We will see a a few clouds Wednesday and Thursday with a chance of isolated showers or thunderstorms over the higher elevations north of Redding.  Temperatures start cooling Tuesday and will be 4 to 8 degrees below normal Wednesday and Thursday.  Gusty south to southwest winds are expected Wednesday and Thursday.  Friday through the weekend a weak high pressure ridge will be back along the coast.  This will bring temperatures back to near normal.

The Old Forecaster

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Wednesday, September 5, 2018

Weather Discussion for Wednesday September 5, 2018

Normal high/ low temperatures for Sept 3-Sept 10  (high/low) Redding 94/59, Chico 92/56, Quincy 84/38, Chester 81/40, Susanville 81/45, Grass Valley 84/53, Weaverville 89/43, Mt. Shasta 81/45, Yreka 85/46, Alturas 82/37

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.

Not much change in our short term weather.  HIgh pressure is over our area and will hold through the weekend.  Skies will be clear with temperatures 5 to 10 degrees above normal.  Winds will be southerly in the afternoon which should help keep the smoke north of Redding. 

The interesting part of the weather is next week.   The high will begin to weaken Sunday and Monday as a low pressure trough develops off the west coast.  The map below is a comparison of the European and U,S, GFS models for mid September.  Both show a trough along the coast and while this trough is a not strong enough to be a rain maker....it is a start.   Longer range forecast models show it strengthening after the 15th.

The Old Forecaster

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Monday, September 3, 2018

Weather Discussion for Monday September 3, 2018

Normal high/ low temperatures for Sept 3-Sept 10  (high/low) Redding 94/59, Chico 92/56, Quincy 84/38, Chester 81/40, Susanville 81/45, Grass Valley 84/53, Weaverville 89/43, Mt. Shasta 81/45, Yreka 85/46, Alturas 82/37

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.

First issue the return of smoke into the Redding area.  The past few days there have been light north winds and this as pushed smoke from the Hirz Fire into the Redding area.   The smoke will persist today with some afternoon improvement and then return tonight.   The good news is Tuesday through the end of the week the winds will shift back to the south which should hold most of the smoke to the north.

HIgh pressure is over California and will hold there for the next week.  The high will weaken a little the last half of the week as a low pressure trough pushes into Canada (see map below).  The next week looks mostly clear with temperatures 4 to 8 degrees above normal today and Tuesday and then a few degrees cooler the last half of the week.  As noted above winds will shift back to the south late Tuesday. 
The Old Forecaster

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