Saturday, May 27, 2017

Weather Discussion for Saturday May 27, 2017

Normal high and low temperatures for May 22-May 29 (high/low)...Redding 83/56, Chico 84/53, Quincy 75/40, Chester 71/38, Susanville 73/42, Grass Valley 74/48, Weaverville 79/42, Mt. Shasta 70/42, Yreka 76/43, Alturas 72/38

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 just off the west coast and will slowly strengthen over the next few days.  Today the north state will be sunny and a little warmer with afternoon cumulus clouds over the mountains.   Sunday and Monday temperatures will continue to warm.   Afternoon cumulus clouds will continue over the mountains with the chance of isolated thunderstorms during the late afternoon and evening.  

Tuesday the high pressure ridge shifts eastward.  The jetstream will split as it crosses the Pacific with the weaker southern branch bringing weak low pressure troughs across Northern California and the Pacific Northwest (see map below).  Temperatures will be cooling.   The north state will be partly cloudy.  Tuesday evening and Wednesday there will be scattered showers and thunderstorms over the higher elevations with isolated activity in the valley.   Thursday there will continue to afternoon and evening thunderstorms mainly over the higher elevations.  

Friday and Saturday skies will be clearing with temperatures warming back to normal.  

The Old Forecaster.

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Wednesday, May 24, 2017

Weather Discussion for Wednesday May 24, 2017

Normal high and low temperatures for May 22-May 29 (high/low)...Redding 83/56, Chico 84/53, Quincy 75/40, Chester 71/38, Susanville 73/42, Grass Valley 74/48, Weaverville 79/42, Mt. Shasta 70/42, Yreka 76/43, Alturas 72/38

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.

Cooling starts today as the high pressure ridge that has been over the west coast weakens.   A low pressure trough is moving through Western Canada and the Pacific Northwest with the southern end brushing the far north end of California.  Today this system will trigger isolated afternoon and evening thunderstorms over Trinity, Siskiyou, Modoc, Lassen, and the higher elevations of Shasta counties.  The cooling continues Thursday and Friday with temperatures back to near normal by Friday.  Skies will be mostly sunny except for a chance of afternoon and evening thunderstorms east off the Sierra Cascade Crest in Lassen and Plumas counties.  Light to moderate north winds are expected in some areas Thursday.

High pressure will be back along the coast by the weekend (see map below).  We will continue to have sunny skies with warming temperatures.   Daytime temps will be about 10 degrees above normal by Monday.  Winds will be light.

Temperatures will be cooling by midweek as the high pressure ridge begins to weaken. 

The Old Forecaster.

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Monday, May 22, 2017

Weather Discussion for Monday May 22, 2017

Normal high and low temperatures for May 22-May 29 (high/low)...Redding 83/56, Chico 84/53, Quincy 75/40, Chester 71/38, Susanville 73/42, Grass Valley 74/48, Weaverville 79/42, Mt. Shasta 70/42, Yreka 76/43, Alturas 72/38

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 over the west coast.   Today and Tuesday we will continue to see sunny skies with daytime temperatures warming to at or just above the 100 degree mark in the north end of the valley.  Late Tuesday and Wednesday a low pressure trough will move through Western Canadian and the Pacific Northwest with the southern end brushing the north end of California (see map below).  This system will bring cooler air and a few clouds to Northern California.  Isolated showers and thunderstorms are expected Wednesday afternoon over the higher elevations north of Redding.

Thursday and Friday we will have mostly clear skies.  Temperatures will continue to cool and will be near normal for this time of year by Friday.  Light to moderate north winds will occur in some areas.

High pressure will rebuild along the coast and this will bring warmer temperatures for the weekend. 

The Old Forecaster.

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Saturday, May 20, 2017

Weather Discussion for Saturday May 20, 2017

Normal high and low temperatures for May 15-May 22 (high/low)...Redding 81/54, Chico 82/52, Quincy 73/38, Chester 69/36, Susanville 71/39, Grass Valley 72/46, Weaverville 77/40, Mt. Shasta 69/41, Yreka 74/41, 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.

A strong high pressure ridge is over the west coast and will hold there through early next week.  Today through Monday we will see sunny skies with some afternoon cumulus clouds over the mountains.  Temperatures will continue to warm and by Monday and Tuesday some areas of the north valley will be near or just above the 100 degree mark.  Winds will be light.  

The high pressure area will begin to weaken Tuesday afternoon and evening as a low pressure trough moves into western Canadian and the Pacific Northwest (see map below). This system will bring a few clouds the far north end of the state with isolated showers or thunderstorms over the higher elevations in the far north end of the state.  

Wednesday and Thursday we will return to mostly clear weather.  Temperature will be normal or a few degrees above normal and gusty north winds will occur in some areas. Warming starts Friday and continues through the weekend as high pressure rebuilds along the coast.   

The Old Forecaster.

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Wednesday, May 17, 2017

Weather Discussion for Wednesday May 17, 2017

Normal high and low temperatures for May 15-May 22 (high/low)...Redding 81/54, Chico 82/52, Quincy 73/38, Chester 69/36, Susanville 71/39, Grass Valley 72/46, Weaverville 77/40, Mt. Shasta 69/41, Yreka 74/41, 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.

Summertime weather pattern developing, so no much to write about.  High pressure is is building along the west coast and by the weekend and early next week a strong high pressure ridge will be over our area (see map below).   The next week we will see mostly clear skies.  Temperatures will warm and by the weekend will be 12 to 18 degrees above normal with the north valley in the upper 90s to near 100.  Light to moderate north winds will occur today and Thursday with light winds Friday through the weekend. 

The Old Forecaster.

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Monday, May 15, 2017

Weather Discussion for Monday May 15, 2017

Normal high and low temperatures for May 15-May 22 (high/low)...Redding 81/54, Chico 82/52, Quincy 73/38, Chester 69/36, Susanville 71/39, Grass Valley 72/46, Weaverville 77/40, Mt. Shasta 69/41, Yreka 74/41, 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.

This morning's satellite picture (below) shows a low pressure area dropping southeastward along the Canadian coast.  This low will move across the Pacific Northwest and the north end of California Tuesday.   Clouds will increase later today and Tuesday will be cloudy to partly cloudy and cool with light rain or showers over the foothills and mountains with a chance of light showers in the valley north of Chico.  Skies will be clearing late Tuesday and early Wednesday as the low moves eastward and high pressure begins to establish itself along the west coast.

Wednesday through the weekend the high pressure ridge along and over the coast will continue to strengthen (see map below).   During this time we will see sunny skies and warmer temperatures.  Saturday and Sunday temperatures will be 12 to 18 degrees above normal, with the north valley in the upper 90s to near 100. 

The Old Forecaster.

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Saturday, May 13, 2017

Weather Discussion for Saturday May 13, 2017

Normal high and low temperatures for May 8-May 15 (high/low)...Redding 81/54, Chico 80/49, Quincy 73/37, Chester 68/34, Susanville 71/39, Grass Valley 71/45, Weaverville 76/39, Mt. Shasta 69/39, Yreka 74/40, 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.

A low pressure area is over western Canada.  This system is continuing to push cool air over Northern California.  Today and Sunday we will continue see below normal temperatures.   Cumulus clouds will form during the afternoon with a few showers expected over the higher elevations.  

Late Monday another low pressure area will drop southward along the Canadian and Pacific Northwest coasts. (see map below).   This system will move across the north state Tuesday.  All areas will see clouds and continued below normal temperatures.  Light rain or showers will occur over the foothills and mountains and in the valley north of Chico.  

Skies will be clearing late Tuesday and Wednesday as high pressure builds along the coast.  Wednesday through next weekend looks sunny with temperatures back above normal by Friday.  

The Old Forecaster.

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