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-- Discussion containing changed information from previous version are highlighted. --
000
FXUS66 KSGX 041113
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
313 AM PST Thu Mar 4 2021

.SYNOPSIS...
High pressure will bring drier weather with a warming trend
through Friday. A low pressure system moving inland through
California on Saturday will strengthen onshore flow with cooling
and gusty southwest to west winds in the mountains and deserts.
weaker winds with slight warming on Sunday For Monday through
Wednesday, a low pressure system over the eastern Pacific will
move slowly toward the West Coast. This will bring chances for
precipitation as early as Monday night and continuing through
Wednesday. Stronger onshore flow will also bring periods of
stronger and gusty southwest to west winds in the mountains and
deserts.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

.SHORT TERM (Today through Saturday)...
Radar shows a few light showers continuing early this morning over
portions of San Diego County and the adjacent coastal waters.
These showers should mostly end by around sunrise. It will then be
dry with a warming trend through Friday. High temperatures will
go from well below average on Wednesday to a few degrees below
average today and 5 to locally 10 degrees above average on Friday.

A trough of low pressure moving inland through California on
Friday night and Saturday will bring stronger onshore flow with
cooling and with stronger and gusty southwest to west winds in the
mountains and deserts. There may be some return of coastal low
clouds for Friday night into Saturday morning.

&&

.LONG TERM (Sunday through Wednesday)...
Onshore flow will weaken on Sunday with slight warming and with
weaker winds in the mountains and deserts. For Monday through
Wednesday, a low pressure system over the eastern Pacific will
move slowly toward the West Coast. This will maintain onshore flow
with greater cooling on Monday and continued slow cooling for
Tuesday and Wednesday.

There are small chances for mostly light precipitation as early
as Monday night continuing into Tuesday. NBM PQPF has some
possibility for something more than light amounts on Tuesday and
Wednesday. Ensemble support for measurable precipitation is
greatest on Wednesday and the cluster on Wednesday with the
greatest support for greater than light amounts has the support of
the greatest number of ensemble members with more than one-third
each from the Canadian, GFS, and ECMWF models. Aside from that
cluster, the greater amounts are mostly to the north.

&&

.AVIATION...
041030Z...SCT-BKN clouds with bases 2500-3500 feet MSL will continue
west of the mountains, BKN clouds more likely in San Diego County
this morning. Scatter out in all areas after 16Z, with scattered low
clouds to continue through the day in foothills. Mostly clear after
01Z.

&&

.MARINE...
Northwest winds could occasionally gust above 20 knots in the outer
waters during afternoons and evenings Friday through Monday.
Otherwise, no hazardous marine conditions are expected through
Monday.


&&

.SKYWARN...
Skywarn activation is not requested. However weather spotters are
encouraged to report significant weather conditions.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
PZ...NONE.

&&

$$

PUBLIC...17
AVIATION/MARINE...MM