Saturday, June 1, 2019

Weather Discussion for Saturday June 1, 2019

Normal high/ low temperatures for May 27-June 3  (high/low) Redding 86/58, Chico 84/54, Quincy 76/40, Chester 73/39, Susanville 74/43, Grass Valley 75/50, Weaverville 79/42, Mt. Shasta 70/43 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

The weak upper level low pressure area is still over the Southwestern U.S. and is moving slowly eastward.   Today and Sunday we will still have enough moisture and instability in the atmosphere to generate afternoon cumulus clouds over the mountains with isolated thunderstorms.  Temperatures today and Sunday will be 5 to 10 degrees above normal.

Monday and Tuesday high pressure will be along the coast.  The north state will be mostly clear with afternoon clouds over the mountains.  Temperatures will continue above normal and winds will be light.

Wednesday and Thursday a low pressure trough will move through the Pacific Northwest and western Canada (see map below).  The only affect this system will have on Northern California is a few clouds in the far north and temperatures will cool back to near normal.  

Friday through the weekend looks mostly clear with above normal temperatures.
Click here for latest Cal Trans Chain Control Information

 Click on images below to enlarge them....


  1. question...the counter clock movement of the low pressure that brought a storm in valley ( around sacramento area ) where was picking up the moisture from?
    Looking at the satellite loop clouds started to form on the middle part of the Sierra...then traveled north east towards nevada ...then looped down and dumped some rain in the valley...thank you

  2. Most the moisture was in the airmass. The upward motion associated with the low is increased by afternoon heating and this causes the clouds to form.

  3. Hi Chris. Hope you are doing well. I have a lightning question. In the past it seemed that we would gt the occasional spring/winter thunderstorm but the vast majority of our thunderstorms came with the monsoonal moisture later in the summer. This year has been very different with more frequent thunderstorms. It also seems they are more intense and not to the mountains to the degree they normally are. Do you have any thoughts about this?
    Thanks for your work on this blog. It is the best source of local weather info I know of. I have been enjoying your weather insights for over 45 years now! Thank you!