837
FXUS66 KSGX 230548
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
1048 PM PDT Thu Oct 22 2026

.SYNOPSIS...
Showers and a slight chance of thunderstorms will continue today,
with highest thunderstorm chances this afternoon. Showers will end
from the northwest late Friday afternoon.  Southwest to west winds
along the desert slopes of the mountains will gust to 40 to 50 mph
through tonight. Dry and warmer for the weekend through Monday, then
gradually cooler for next week with a chance of precipitation for
late next week. Tides will increase over the weekend, remaining
elevated through much of next week.

&&

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

...UPDATED AVIATION DISCUSSION...

Rainfall activity is expected move south more into San Diego
County through this afternoon and evening, but will remain
scattered in coverage. For this evening and overnight peak
rainfall rates of 0.25 to 0.35 inches per hour are expected. An
additional 0.25 to 0.75 inch of rain may accumulate in some
locations. In addition to periods of rain, gusty winds can be
expected over the mountains, locally into the deserts. Peak gusts
of 45 to 55 mph are expected through this evening.

High temperatures on Friday will be a few degrees warmer than today
for the coast to the mountains with greater warming of 5 to 10
degrees on Saturday. High temperatures on Saturday will be as much
as 5 to 10 degrees below average for the mountains. Conditions will
continue to warm Sunday and Monday. By Monday, high temperatures in
coastal areas will be 5 to 10 degrees above average, with
temperatures closer to average further inland.

The flow will turn offshore for the weekend, with periods of north
to northeasterly winds in the mornings. Strongest winds will be on
the mountain foothills and below passes and canyons. Right now it
looks like peak wind gusts will be in the 30 to 45 mph range. Given
the unsettled weather quickly turning to offshore flow, marine layer
low clouds and fog will largely be absent from the coast into early
next week.

&&

.AVIATION...
230530Z...SCT -SHRA mountains westward will continue through
Friday morning. Cloud bases generally above 3500 feet MSL, except
briefly down to 2500 feet and vis 4-6SM in SHRA. Partial
obscuration of mountains will continue through tonight. Onshore
wind gusts 25-30 kts along desert slopes and locally into deserts
will gradually taper off overnight. -SHRA will gradually taper off
from north to south Friday afternoon, but at the same time
increase in mountains. Clearing all areas after 02Z Friday
evening.

&&

.MARINE...
A storm system will slowly move through the coastal waters through
Friday. Isolated northwest wind gusts will occasionally reach 20
knots Friday. No hazardous marine conditions are expected Friday
night through Tuesday.

&&

.BEACHES...
Astronomical high tides will create minor to moderate coastal
flooding starting Saturday. Tides are 1.4-1.6 feet above
predictions. Morning high tides could reach 7 feet Saturday morning
and are likely to exceed 7.5 feet by Monday morning. Locally
significant impacts expected from Monday to Wednesday.

&&

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

&&

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

&&

$$

PUBLIC...CO
AVIATION/MARINE/BEACHES...MM

NWS San Diego (SGX) Office