Scientific Forecaster Discussion
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Area forecast discussion
National Weather Service Sacramento California
337 am PDT Wed Jun 28 2017
near average temps thru mid-week followed by a warming trend.
clear skies across interior norcal early this morning. Current
temperatures are running about the same as 24 hours ago as a
moderately strong Delta breeze continues. Readings generally range
from the mid 30s to mid 40s in the mountain valleys to mainly the
50s and 60s elsewhere, except around 70 over the northern
Marine layer is around 2000 feet and it looks like there could be
some patches of stratus making it inland into the Sacramento
region again this morning. Otherwise, a little warming is expected
today as ridging from the eastern Pacific moves over norcal. This
will suppress the marine layer weakening onshore flow and
resulting in modest synoptic warming.
Gradual warming continues into the weekend with triple digits
expected to return to the northern Sacramento Valley on Thursday
then gradually become more extensive heading into the weekend.
Short-wave forecast to move thru norcal early Saturday, but the
airmass will likely be too dry to support deep convection. Its
quick movement thru the region will likely limit cooling
potential other than initiating a stronger Delta breeze again
Extended discussion (sunday through wednesday)
dry weather is expected to continue through the extended period.
A slight cooling trend is currently projected as a broad upper
trough over the Pacific northwest deepens. Forecast temperatures
are still projected to remain at or above normal through this
VFR conditions the next 24 hours. Winds will remain south to west
today, generally below 10 kt across valley taf sites. Near the
Delta...SW wind gusts up to 25 kt possible. Dang