Dry and mild with neither wind nor rain in sight

November 1, 2019 – Dry and milder weather pattern, with no major wind events, expected for at least the next week.

Discussion

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Clear skies and generally light winds cover the region early this morning. The dry airmass continues to slowly moderate with most areas seeing gradually higher dew points compared to yesterday, and colder areas of the Central Valley will likely see some patchy frost around sunrise.

Current temperatures range from the 20s in the colder mountain valleys to the mid 30s to mid 40s across the Central Valley.

Rex block evolves through the weekend into early next week as the ridge portion over the eastern Pacific extends into NorCal while the weak low under the ridge lingers near SoCal.

The result will be milder temperatures with highs around 5-10 degrees above average for early November, and moderating overnight lows as well. Humidities are expected to gradually increase through the weekend too.

Extended Discussion (Tuesday through Friday)

Ensemble models indicate upper level ridging will impact NorCal through most of the extended forecast period. Current runs show the deep upper ridge axis situated over the eastern Pacific through early next week will finally begin to weaken and move east over NorCal through the extended period.

This will break down the extremely dry airmass situated over the area and result in a slight increase in relative humidity midweek. Daytime temperatures will remain around 7 to 15 degrees above daily normals, with Valley temperatures in the mid to upper 70s and mountain temperatures in the 50s to 60s.

Clear skies over the area will allow overnight temperatures to fall to near normal, generally in the 40s across the Valley and 20s to 40s for the mountains. Winds expected to remain fairly light under the ridge axis. Unfortunately, at this time no precipitation is expected through the extended period.