Weather alerts for the NWS San Diego CA forecast area

000
FXUS66 KSGX 281134
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
434 AM PDT Wed Oct 28 2026

.SYNOPSIS... 
The cooling trend will continue into the weekend with increasing
clouds. Some lighter rain could occur for late Thursday night
into Friday from the coast to the mountains. There are greater 
chances for heavier rainfall for Saturday night into Sunday with
the most likely time for the heaviest rainfall late Saturday 
night. Then warmer and drier for next week. Tides will remain 
elevated through much of this week with near record water levels 
resulting in coastal flooding.

&&

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

...UPDATED AVIATION, MARINE, AND BEACHES DISCUSSIONS...

.SHORT TERM (Today through Friday)...
The cooling trend will continue into the weekend with high
temperatures on Friday as much as 10 to 15 degrees below average
for the mountains. High temperatures on Friday for the coast and
valleys will be mostly in the mid 60s to lower 70s with the
mountains in the mid 40s to mid 60s. Clouds will increase with a 
slight chance for lighter showers from the coast to the mountains 
for late Thursday night into Friday morning. The chance for more 
than 0.10 inch is highest for San Diego County from the coast to 
the mountains, but still only 10 to 20 percent.

&&

.LONG TERM (Saturday through Tuesday)...
A subtropical low pressure system will move inland into
southwestern California for late Saturday into Sunday.
The trend is for greater rainfall for much of southwestern 
California from the coast to the mountains. Some lighter showers 
could develop for Saturday afternoon into Saturday evening. The 
greatest potential for heavier rainfall is for late Saturday 
night.

Through Sunday, the ECMWF AIFS ensemble output only has 15 percent
of members with less than 1 inch of rainfall for San Diego with
the greatest rainfall for the east-west mountain ranges from 
Ventura County to southwestern San Bernardino County. For Saturday 
night through Sunday afternoon, the ECMWF Extreme Forecast index 
has increased rainfall across San Diego County to between the 80th 
and 90th percentile.

It will be dry with warming for next week with high temperatures
for next Tuesday a few degrees above average for coastal areas
with inland areas around 5 degrees below average. High
temperatures for next Tuesday for the coast and valleys would be 
mostly in the 70s, for the mountains in the mid 40s to mid 60s,
and in the lower deserts around 80.

&&

.AVIATION... 
281130Z...SCT-BKN high clouds above 20 kft today and tonight. Patchy 
and intermittent low clouds based around 1500-2000 feet MSL most 
likely around KSNA through 16Z. A greater chance of cigs based at 
1800-2000 feet MSL, but still random and intermittent, after 04Z 
tonight, extending inland overnight into Thursday.

&&

.MARINE...
No hazardous marine conditions are expected through Saturday. A 
storm system arriving Saturday night and Sunday could generate 
hazardous wind and sea conditions.

&&

.BEACHES...
High tides during the late mornings will generate significant 
coastal flooding this week. Tides will be anywhere from 1.4 to 1.6 
feet above astronomical predictions, bringing high tides to 7.7-7.9 
feet through Thursday. A Coastal Flood Warning remains in effect 
through Thursday afternoon and contains more details. A storm system 
will bring increased surf on Sunday. Stay tuned for updates.

&&

.CLIMATE...
The water level at San Diego during the peak of the high tide 
Tuesday morning of 2.80 feet MHHW (8.52 feet MLLW) is the new
highest water level recorded at San Diego, exceeding by 0.8 
feet the previous record set on Monday. Four of the 10 highest 
water levels observed at San Diego have occurred in 2026 since 
mid July.

Predicted astronomical high tides for king tides in November, 
December, and January will be higher than for the astronomical 
high tides of this week.

Change relative to October 27th (Tuesday):
 November 25th: + 0.35 feet 
 December 24th: + 0.46 feet 
 January  22nd: + 0.31 feet

&&

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

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...Coastal Flood Warning until 1 PM PDT Thursday for Orange County 
     Coastal Areas-San Diego County Coastal Areas.

PZ...None.

&&

$$

PUBLIC/CLIMATE...17
AVIATION/MARINE/BEACHES...MM