Area Forecast Discussion
Issued by NWS Sacramento, CA
FXUS66 KSTO 292208
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
308 PM PDT Mon Sep 29 2014
Dry and warming weather this week. Locally breezy north to east
winds during the middle of the week as high pressure rebuilds
across the region. Daytime highs will be above normal Thursday
Evidence of a warmer weather pattern is starting to be seen.
Temperatures at 2 pm were ranging 5 to 10 degrees warmer than 24
hours ago. The final max temps for today should reach into the low
80s but will still be below normal. The recent storm system that
impacted NorCal continues to hover over Utah into Nevada but will
keep tracking eastward. With left-over moisture in the air, there
could once again be patches of mountain valley fog possible in the
early morning hours Tuesday.
Tuesday into Wednesday will be NorCal`s transition from the recent
cool/wet pattern into a dry and warmer pattern. NorCal will be
sandwiched between the low to our east and building high pressure
over the Pacific to our west. In this transitional timeframe,
pressure gradients will increase as we expect northerly valley
winds to be enhanced from Tuesday night into Thursday. We also
expect offshore/easterly flow downslope along the Western Sierra.
Both of these wind patterns will help dry out our region. By
Thursday, the high pressure ridge will be centered over the West
Coast and this is when daytime highs, region-wide, will see a
notable jump to above normal. Thursday highs will be in the upper
80s to low 90s across the valley. Warming will continue through
the end of the week.
.Extended Discussion (Friday through Monday)
High pressure ridging dominates the extended forecast, bringing
dry weather through the end of the week. The warming trend continues
with Friday & Saturday being the warmest days with widespread
valley highs in the 90s and the mountains warming into the 70s. This
is when ridging peaks in strength over the region. By Saturday,
daytime highs will range 6-12 degrees above normal. Sunday looks
slightly cooler as the ridge flattens a bit. EK/JBB
VFR conditions next 24 hours except mountain valley fog developing
after midnight over the Sierra and coastal stratus in the delta through
Tuesday morning 18z. Variable winds generally 5 to 15 knots.