San Diego Weather at Mission Trails, CA

305
FXUS66 KSGX 080933
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
133 AM PST Sun Mar 8 2026

.SYNOPSIS...
Gusty Santa Ana winds will continue through today across the
mountains to the coast as an area of low pressure sets up to our
southwest off the coast of central Baja. Temperatures today will
be much higher than yesterday, most noticeable west of the
mountains. There will be a chance for light rain over San Diego
County for this evening through Monday evening. As the system
begins to move northeast, cooler weather returns for Monday and
Tuesday. Building high pressure will bring fair and very warm
weather for Wednesday into next weekend.

&&

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

Offshore flow continues this morning with Santa Ana winds gusting
to as much a 67 mph in the wind-prone areas of the mountains and
coastal foothills. Many more locations are gusting in the 35-45
mph range. For the time being, the low pressure system has settled
into position to our southwest, off the coast of central Baja. The
circulation around this low has brought a few mid and high clouds
into San Diego County from the southeast.

The low will remain nearly stationary through Monday morning. This
will allow additional moisture to reach SoCal bringing small
chances for light showers late today through Monday afternoon, mainly
to the mountains of San Diego County. Any rainfall accumulations
are not expected to exceed one tenth inch. The low begins to move
to the northeast Monday afternoon and will reach the Texas
Panhandle as an open wave by Tuesday afternoon. Monday and Tuesday
will be cooler than today, with temperatures in the 60s to 70s
west of the mtns and in the high deserts, and in the lower 80s in
the low deserts. The return of onshore flow could also bring a
return of marine layer low clouds and fog to the coastal areas and
valleys for Mon night/Tue morning then again Tue night/Wed
morning.

For Wednesday into next weekend...Temperatures rise again as a
ridge of high pressure builds over the west coast. Thursday and
Friday will be the warmest days as the ridge reaches its maximum
amplitude. Temperatures on those days will likely reach the upper
80s to lower 90s in the inland valleys and the upper 90s in the
low deserts. These temperatures are as much as 20 degrees above
seasonal averages. Temperatures will moderate somewhat west of the
mtns next Sat and Sun as the ridge weakens and strengthening
onshore flow spreads marine air into the coastal areas and inland
valleys.

&&

.AVIATION...
080545Z....Coast/Valleys/Coastal Slopes...VFR conditions expected
through the TAF period with increasing clouds from the south above 5
kft MSL after 22z Sun.

As of 06z, wind gusts below 20 kts this evening for much of the
lowlands, though remains 25-40 kts (locally higher) along coastal
slopes and within 10-15 miles downwind of Banning/Cajon passes
(including KONT). With winds remaining strong aloft, areas of LLWS
are possible where the sfc winds diminish, downwind of NE flow
tonight (i.e. KSNA, KSBD). E/NE winds pick up once again across the
entire coastal basin after 15z Sun gusting 20-35 kts in the lowlands
and 35-50 kts along coastal slopes and downwind of passes. Between
19-22z Sun, winds turn southerly (gusts 15-20 kts) at the coast,
then weaken gradually elsewhere after 00z Mon.

Current water vapor satellite shows mountain waves present across
most of the area. Moderate to strong up/downdrafts can be expected
west of the mountains through the TAF period.

Deserts/Desert Slopes...VFR conditions expected through the TAF
period. Gusts in adjacent slopes remain elevated through the period.
Surface NE winds increase after 15z Sun, though gusts in the valleys
are likely to remain below 30 kts. Winds decrease gradually after
00z Mon.

Moderate to strong up/downdrafts through the TAF period as
continuing strong mid-level E/NE winds generate mountain waves over
the Coachella Valley.

&&

.MARINE... Elevated N/NW winds through Sunday morning turn out of
the south Sunday afternoon with gusts nearing 20 knots, primarily
for the inner coastal waters. Otherwise, no additional hazardous
marine conditions are expected through Thursday.

&&

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


&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...Wind Advisory until 5 PM PST this afternoon for Orange County
     Inland Areas-Riverside County Mountains-San Bernardino
     County Mountains-San Bernardino and Riverside County
     Valleys-The Inland Empire-San Diego County Mountains-San
     Diego County Valleys-San Gorgonio Pass near Banning-Santa
     Ana Mountains and Foothills.

PZ...None.

&&

$$

PUBLIC...PG
AVIATION/MARINE...Zuber