Area Forecast Discussion
Issued by The National Weather Service
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000
FXUS66 KSTO 211306
AFDSTO
Area Forecast Discussion
National Weather Service Sacramento CA
606 AM PDT Sun Apr 21 2024
.Synopsis...
Warm and dry weather continues into early next week. Locally
breezy winds at times through the Delta. Cooler, near-normal
temperatures return Tuesday through the end of the week with
onshore flow. Precipitation chances return late Tuesday through
Saturday, mainly over the mountains.
&&
.Discussion...
Upper level ridging will continue through Monday with warm high
temperatures in the low to mid 80`s at Valley locations. Trough
approaching the coast late Monday will turn the flow to the
southwest with Delta breeze likely to set up Monday evening.
Southwest wind gusts up to 25 mph will be possible through the
Delta. Trough will move through Tuesday and Wednesday with
onshore flow providing a cool down back into the low/mid 70`s for
most Valley locations, which will be near normal for this time of
year. Main energy with trough will drop south into SoCal, but
just enough forcing and instability will be present over the
mountains for an isolated shower or thunderstorm both Tuesday and
Wednesday afternoon and evening. Mountain thunderstorm chances are
10 to 20 percent, with a relatively dry atmosphere in place only
light precipitation amounts are expected, generally less than
0.10.
&&
.EXTENDED DISCUSSION (Thursday THROUGH Sunday)...
Upper trough pushes into NorCal Thursday as upper low to the
south exits CA. Additional short wave troughs progged through the
CWA Friday into the weekend. This will result in cooler unsettled
weather with a threat of showers and mountain snow showers. Best
chances for precipitation expected in the foothills and mountains.
Storm total QPF Thursday into the weekend looks light with
minimal travel impacts. High temperatures expected to be near to
below normal.
&&
.AVIATION...
VFR conditions over interior NorCal next 24 hrs with sfc wind
mainly at or below 12 kts.
&&
.STO WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
Air Quality
