Area Forecast Discussion
Issued by NWS San Diego, CA-- Highlight Changed Discussion --
-- Discussion containing changed information from previous version are highlighted. --
FXUS66 KSGX 191216
Area Forecast Discussion
National Weather Service San Diego CA
416 AM PST Sun Feb 19 2017
A few light showers will linger along and west of the
mountains...decreasing this afternoon. For tonight through
Tuesday...storms moving into northern and central California will
spread lighter precipitation into portions of Southern California
at times with light precipitation possible for areas bordering Los
Angeles County. A colder low pressure system moving inland through
California Wednesday night will bring strong gusty west winds in
the mountains and deserts with chances for light precipitation
along and west of the mountains. Dry and little warmer for
Friday...then a little cooler for next weekend with chances for
precipitation late Saturday into Sunday.
.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
.SHORT TERM (Today through Tuesday)...
A few light showers will continue this morning...mainly along and
west of the mountains in San Diego County and in the Inland
Empire...decreasing this afternoon. In the deserts...there are
areas of low clouds and some patchy fog as well. There was a
recent spotter report of dense fog in the Borrego Springs area.
For tonight through Tuesday...precipitation from storms moving
into northern and central California will extend into portions of
Southern California at times. Light precipitation may extend into
portions of southwest California at times...mainly for areas
bordering Los Angeles County. Snow levels will be fairly
high...mostly 7000 feet for above.
.LONG TERM (Wednesday through Saturday)...
A colder low pressure system moving inland through California
Wednesday night will bring strong gusty west winds in the
mountains and deserts with chances for light precipitation along
and west of the mountains. Dry and little warmer for Friday...then
a little cooler for next weekend with chances for precipitation.
The current forecast leans a little slower than the ECMWF and not
as amplified as the GFS with a low pressure system that could
bring precipitation late Saturday into Sunday.
191040Z...Isolated light showers will diminish by mid morning.
Variable cigs 1500-3500 ft MSL becoming SCT-BKN 2500 ft MSL or
higher by 16Z and continuing through Monday morning. Local vis 3-6
SM in showers and in the Coachella Valley through 16Z. Mountains
remaining obscured in clouds and fog.
Northwest winds with gusts 20-25 kt will very slowly diminish today.
Combined seas had peaked at 19 ft at the San Clemente Basin Bouy and
have already lowered to around 13 ft. A Small Craft Advisory
continues through this for the combination of the high seas and
moderately strong winds.
Another storm system may create more hazardous marine weather
conditions on Wednesday, with northwest winds of 25-30 kt possible
and seas near 10 feet.
Swell and surf will be high this morning with max sets around 12
feet, then lower gradually through the day. Some low-lying coastal
areas could be at risk of minor coastal flooding due to large surf.
Powerful rip currents will accompany the high surf as well. A High
Surf Warning remains in effect through this evening.
Skywarn activation is not requested. However weather spotters are
encouraged to report significant weather conditions.
CA...High Surf Warning until 10 PM PST this evening for Orange County
Coastal Areas-San Diego County Coastal Areas.
PZ...Small Craft Advisory until 10 PM PST this evening for Coastal
Waters from San Mateo Point to the Mexican Border and out
to 30 nm-Waters from San Mateo point to the Mexican Border
Extending 30 to 60 nm out including San Clemente Island.