FXUS66 KSGX 230331
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
830 PM PDT Mon Apr 22 2024

.SYNOPSIS...
Cooler temperatures, widespread low clouds and periods of gusty 
winds will occur this week. Areas of drizzle are likely west of the 
mountains Tuesday morning, and there is a chance for light showers 
at times from Wednesday night through Friday. Dry weather is 
forecast this weekend. 

&&

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

Palm Springs reached 100 degrees today for the first time since 
October 21, 2023. It was only five degrees away from the nation's 
high of 105 at Death Valley. It will be the first of many more 100+ 
high temperatures to come this year at PSP.  

Clouds didn't clear from the coast today and that resulted in the 
short thermometer at San Diego Airport with a high of 63 and a low 
of 59. At 8 PM, low clouds had already surged into the San Diego 
County valleys and Inland Empire, on their way to enveloping the 
mountain foothills with clouds and fog tonight. The marine layer 
will be deep enough for areas of drizzle west of the mountains. 
Farther east the skies will be clear over the mountain and deserts 
for an unrestricted view of the nearly full moon tonight. 

A 562 dm closed low 600 miles west of Pt Conception this evening 
will slowly drift east toward SoCal Tuesday through Thursday. Clouds 
from a deep marine layer will be slow to clear each day west of the 
mountains which will keep temperature below average. Drizzle or 
light rain will also be possible at times. Gusty winds will impact 
the mountains and deserts. 

On Friday an upstream shortwave in the fast northwest flow will 
bring a chance for more showers as it races across Southern 
California. Friday will be another cool, breezy day with below 
average temperatures from the coast to the desert. Dry northwest 
flow filling in behind the trough will bring a dry but breezy day 
Saturday, followed by a warmer day with lighter winds Sunday. 

&&

.AVIATION... 
230325Z...Coast/Valleys...Low clouds with bases around 1200-1500 
feet MSL and tops to 3000 feet currently cover coastal areas and 
most of inland valleys to the coastal mtn slopes, obscuring higher 
terrain. VIS 1-3SM where clouds and terrain intersect. Bases and 
tops expected to rise overnight. Expect inland clearing 17Z-19Z with 
only partial clearing in the coastal areas. CIG impacts could 
persist at coastal TAF sites into Tue afternoon.

Mountains/Deserts...Mostly clear skies with unrestricted VIS through 
Tuesday morning.

&&

.MARINE...
No hazardous marine conditions are expected through Friday. Stronger 
winds and possibly hazardous conditions Friday night.

&&

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

&&

$$

PUBLIC...Moede
AVIATION/MARINE...PG