000
FXUS66 KSTO 171920
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
1220 PM PDT Wed Apr 17 2024

.Synopsis...
Warm and dry weather continues through the week. Locally breezy
at times.

&&

.Discussion...
Latest GOES-West visible satellite imagery shows some high level
clouds passing over interior northern California on this Wednesday
afternoon. Warm and dry conditions are being observed across the
area, thanks to upper level ridging. Temperature observations are
currently in the upper 60s to mid 70s in the Valley, 60s to low
70s in the foothills, and 50s to 60s in the mountains, valid at
1215 PM PDT. These temperatures are trending approximately 2 to 8
degrees warmer than this time yesterday afternoon. Locally breezy
northerly winds are being observed mainly in the northern and
central Sacrameno Valley as a trough exits the Pacific Northwest.
Wind gusts of 15 to 25 mph are being observed, and will taper off
this afternoon and evening.

Upper level ridging will continue to be the main synoptic feature
the rest of this week, bringing a slight day to day warming trend
and above normal daytime high temperatures. Valley highs will be
in the upper 70s to mid 80s, with 70s to near 80 in the foothills,
and 50s to 70s in the mountains. Additional high clouds may move
through later this week as a weak wave of energy passes by to the
south, with increased onshore flow Friday and Saturday. Overall
pleasant weather conditions are in the forecast for the next
several days, as HeatRisk remains in the minor category.

&&

.EXTENDED DISCUSSION (Sunday THROUGH Wednesday)...
Ensembles and clusters indicate high pressure ridging remaining
over NorCal Sunday and Monday with warm temperatures from 5 to 10
degrees above normal. A trough may approach the area late Monday
and then move through the area Tuesday and Wednesday. This will
bring cooler, but still near normal temperatures. This system
looks to be on the dry side with less than 10 percent precip
chances over the mountains and dry over the Valley.

&&

.AVIATION...
VFR conditions next 24 hours. Areas of northerly surface wind
gusts 15-25 kts northern mountains and northern Sacramento Valley,
then light winds this evening.

&&

.STO WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$