Area Forecast Discussion
Issued by NWS Sacramento, CA
FXUS66 KSTO 291030
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
330 AM PDT Mon Sep 29 2014
Dry and warmer weather this coming week with locally breezy north
winds during the middle of the week as high pressure rebuilds
across the region.
Exiting upper low is now along the UT/NV border and continuing to
move further east. Strong short-wave that continued showers across
portions of NorCal on Sunday has dropped southeast into the lower
Colorado River Valley. Skies have cleared for the most part across
interior NorCal as upstream short-wave ridge approaches, though
some backwash cloudiness continues to drop southward along the
eastern edge of the forecast area.
May see some patches of shallow fog early this morning across
portions of the Central Valley and in the mountain valleys as many
of the valley METARs are nearing saturation with light winds.
Temperatures early this morning are cooler than 24 hours ago given
less cloud cover and range from the 30s and 40s in the mountains
to the mid 50s to lower 60s in the valley.
The main weather story for interior NorCal this week will be the
return of summer-like temperatures toward the end of the week as
strong high pressure builds along the west coast. However, prior
to that occurring, short-wave ridging will return temperatures
back closer to normal today. A dry cold front will brush across
the far northern portion of the state tonight, but will have
little effect other than bringing some clouds. Breezy north winds
will develop in the wake of the frontal passage on Tuesday and
continue into Wednesday.
Warmest temperatures are expected after mid-week as strong upper
ridge builds over the area and surface flow turns light offshore
as the thermal trough shifts to near the coast. It looks like
temperatures will once again warm well into the 90s through much
of the valley late in the week and over the weekend.
VFR conditions next 24 hours except mountain valley fog over the
Sierra and coastal stratus in the delta through about 18z.
Variable winds generally below 15 knots.