Area Forecast Discussion
Issued by NWS San Diego, CA

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
000
FXUS66 KSGX 281141
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
341 AM PST Tue Feb 28 2017

.SYNOPSIS...
Lingering mostly light precipitation will continue into this
morning...mainly near the San Diego County mountains early this
morning. Then drying and continued cool today. For Wednesday
through Friday...dry with a arming trend with periods of weak
offshore flow. For Saturday through Monday...a little cooler with
a return of weak onshore flow and the marine layer.

&&

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

A low pressure system over the western states will continue to
move east today. Some light precipitation continues early this
morning...mainly across San Diego and western Riverside Counties.
This will gradually diminish into this morning. High temperatures
will warm slightly today...but still remain well below average.

A flood warning continues for the San Diego River. The river
crested at 14.15 feet at 2:15 AM. That is now the third highest
crest on record at Fashion Valley...exceeding the 14.1 feet on
December 22nd 2010. The current forecast would take it below flood
stage this afternoon...but it may take until late tonight to fall
below the level of the low water crossings.

For Wednesday through Friday...dry with a warming trend with
periods of weak offshore flow. High temperatures will warm to near
average on Wednesday and several degrees above average on Friday
with some of the warmer locations exceeding 80 degrees.

For next weekend...high pressure aloft off the California coast
will weaken with weak onshore flow returning. This will bring
cooling and a return of the marine layer. Some runs of some models
show enough amplitude in a trough of low pressure approaching the
West Coast to potentially bring some light precipitation to
portions of Southern California around Sunday though the bulk of
the models and model runs remain dry. A more significant trough of
low pressure may develop over the eastern Pacific around the
middle of next week.

&&

.AVIATION...
281000Z...Skies will gradually scatter out from northwest to
southeast during the morning. Mainly in San Diego County variable
cigs in time and space will continue between 1000-3500 feet msl
through 16-18Z along with areas of obscured terrain. Pockets of low
clouds and fog are expected in the lower desert through 17Z. Mostly
clear and VFR conditions will prevail in most areas after 18Z.

&&

.MARINE...
Northwest winds will continue brisk early this morning with some
gusts to 25 knots mainly in the outer waters. A Small Craft Advisory
remains in effect through 9 am. No additional hazardous marine
weather is forecast through Saturday.

&&

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

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...Small Craft Advisory for winds until 9 AM PST this morning for
     Waters from San Mateo point to the Mexican Border Extending
     30 to 60 nm out including San Clemente Island.

     Small Craft Advisory until 9 AM PST this morning for Coastal
     Waters from San Mateo Point to the Mexican Border and out
     to 30 nm.

&&

$$

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



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.