Orange, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

134
FXUS66 KSGX 151009
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
309 AM PDT Tue Jul 15 2025

.SYNOPSIS...
High pressure will weaken as a weak upper level low pressure
system off the central coast of Baja moves into northern Baja
Thursday night and into southern California on Friday. There will
be cooling for today and Wednesday with a chance of afternoon
showers and thunderstorms, mainly for the mountains and mainly on
Thursday and Friday with decreasing chances on Saturday afternoon.
Then drier and a little warmer inland for Sunday into early next
week. Night and morning coastal low clouds will spread into the
western valleys late each night.

&&

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

.SHORT TERM (Today through Thursday)...
High pressure will weaken across southern California while a low
pressure system centered just off the coast of central Baja moves
into northern Baja late Thursday. There will be cooling for today
and Wednesday with the greatest cooling for today in the
mountains with a few degrees of cooling for most areas on
Thursday. Monsoonal moisture will increase on Thursday with a
slight chance of showers and thunderstorms on Thursday afternoon,
mainly for the mountains. The marine layer will remain around 2000
feet deep with night and morning coastal low clouds spreading
into the western valleys late each night.

&&

.LONG TERM (Friday through Monday)...
The center of upper level low pressure will move northward into
the vicinity of southern California on Friday. NBM chances for
afternoon thunder and measurable rainfall are greater on Friday
than Thursday and greatest for the San Bernardino Mountains on
both days. Convection on Friday afternoon will not necessarily
be tied to terrain with some elevated convection on the north
side of the upper low moving toward the west and southwest in the
circulation around the upper low. However, just where that might
occur in southern California on Friday afternoon is less certain
given the spread in the track of the center of the upper low.

Moisture will be decreasing for Saturday and Sunday with lesser
chances for afternoon showers or thunderstorms on Saturday and
mostly for the mountains with a less than 10 percent chance for
any showers and thunderstorms for the mountains on Sunday
afternoon. Drying will continue into early next week with not much
change in high temperatures for the coast and valleys with the
deserts a few to around 5 degrees warmer.

&&

.AVIATION...
150900Z....Coast/Valleys...Low clouds based 1000-1500 ft MSL with
tops to 1800 ft MSL have moved 20-25 miles inland, and will progress
into the southern and western IE including VCTY KONT around 11Z,
with vis restrictions 4-6 SM through 16Z. Clouds scatter inland 16-
17Z and near the coast 17-19Z, with slightly better chances for
coastal clearing after 19Z (65% chance at KSAN and KCRQ, higher at
KSNA). Clouds with similar bases will push inland to a similar
extent after 16/00Z.

Mountains/Deserts...Mostly clear skies with unrestricted VIS through
late tonight.

&&

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

&&

.BEACHES...
A moderate period south-southwesterly swell (2-3 feet at 15-17
seconds) will generate elevated surf and a high risk of rip currents
Wednesday and Thursday. Surf of 3-5 feet expected with sets to 6
feet possible, primarily on southerly facing beaches. Swell and surf
will begin to lower on Friday.

&&

.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...17
AVIATION/MARINE/BEACHES...CSP