532
FXUS66 KSGX 132046
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
146 PM PDT Thu Jun 13 2024

.SYNOPSIS...
Warming conditions into Friday and Saturday, followed by another
round of near to below average temperatures for Sunday into the
middle of next week. Night and morning low clouds and fog can be
expected each day along the coast and into portions of the valleys.
Periods of gusty westerly winds in the mountains and deserts,
combined with dry conditions will create elevated fire weather
conditions through the weekend.

&&

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

As of 1:30 PM, low clouds had mostly cleared, with a few patches
of low clouds lingering along portions of the San Diego County
coast. Overall, temperatures at 1:30 PM were running 2 to 7
degrees cooler than this time yesterday in the valleys, mountains,
and High Desert. Temperatures at the coast and in the lower
deserts were the same to a few degrees warmer than yesterday.
Marine layer low clouds will move back inland and reach into
portions of the Inland Empire late tonight or early Friday
morning.

A brief warming trend is expected for Friday and Saturday as a weak
ridge of high pressure builds over southeastern California, southern
Nevada, and western Arizona. This will result in noticeable warming,
especially for inland areas which will peak on Saturday. High
temperatures will be 8 to 12 degrees above average with hottest
temperatures in the lower deserts to around 115 and in the Inland
Empire to around 100. Moderate heat risk is expected in the Inland
Empire on Saturday and moderate to locally major heat risk is
expected in the low deserts Friday and Saturday. During this time
its recommended that folks stay hydrated and limit outdoor physical
activities between 10am and 5pm (if possible).

Sunday and Monday will be cooler as a low pressure system moves
inland through the western states. On Monday, high temperatures for
the mountains, inland valleys, and High Desert will be 5 to 10
degrees below average. Highs in the low deserts will be a degree or
two below normal meaning highs will be around 100-103 degrees. High
temperatures on Tuesday may be a few degrees warmer with a warming
trend continuing through the following weekend. Night and morning
low clouds and fog for the weekend into next week will continue
along the coast each day and into portions of the valleys at
times.

&&

.AVIATION...
132030Z...Coast/Valleys...Broken to overcast ceilings with areas VIS
2-4SM in FG/HZ. Clearing will continue along the coastal areas
through 23Z. Expecting Marine Layer to return to most coastal sites
around 02Z Friday and further inland through the evening. Ceilings
are expected to be around 900-1500 feet MSL.

Mountains/Deserts...SKC with unrestricted VIS.

&&

.MARINE...
No hazardous marine conditions are expected through Saturday.

&&

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


&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...Heat Advisory from noon to 8 PM PDT Saturday for San Bernardino
     and Riverside County Valleys-The Inland Empire.

     Excessive Heat Warning from 10 AM Friday to 8 PM PDT Saturday
     for Coachella Valley-San Diego County Deserts-San Gorgonio
     Pass Near Banning.

PZ...None.

&&

$$

PUBLIC...CO
AVIATION/MARINE...Suk