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.
Late yesterday enough subtropical moisture moved northward to trigger isolated thunderstorms over the higher elevations north and east of the valley. Today there still could be isolated activity over Modoc and eastern Lassen counties. Temperatures today will be normal or slightly above. South winds are expected in the afternoon.
The high pressure will rebuild over the western U.S. over the next several days (see map below). This will cause temperatures to warm and by the weekend daytime temperatures will be 6 to 10 degrees above normal. Winds will be south to southwest in the afternoon.
A slow cooling trend should start early next week as the high weakens and a weak upper level low pressure area forms off the coast. This low could trigger more thunderstorm activity next week.
The Old Forecaster