Encinitas, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

120
FXUS66 KSGX 080401
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
901 PM PDT Sat Jun 7 2025

.SYNOPSIS...
The warming trend continues through midweek, peaking Monday and
Tuesday, before a slow cooldown towards the end of the week. The
marine layer becomes shallower through mid week, but may persist
for the coastal areas with low clouds and fog during the nights
and mornings.

&&

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

Thais evening...The marine layer is several hundred feet
shallower than at this time yesterday. There is also significantly
less low cloud cover, with only the San Diego County coastal
areas and valleys covered by low clouds. Elsewhere, skies are
clear. High- resolution models do still show a return of
widespread low clouds west of the mtns tonight but with a
shallower marine layer, we are less likely to see the same pattern
of drizzle that we saw the last couple of nights.

From previous discussion...
A warming and drying trend sets in through mid week as upper
level ridging builds in over California. The thermal ridge axis
will extend from the Desert Southwest up into the Columbia Basin
on Tuesday, pivoting to southeastern California through Utah on
Wednesday. Subsidence squishes the marine layer and allows
temperatures to quickly warm across the deserts and Coachella
Valley both Tuesday and Wednesday, with a 85% chance of >105F in
the low deserts and Coachella Valley and a 40% chance of >110F,
highs around 5-10 degrees above normal for mid June. Even areas
further west will see a significant warm up, with 90s in the
Inland Empire and upper 80s to low 90s in the San Diego valleys by
Tuesday. For coastal areas, moderate onshore flow along with the
shallow but persistent marine layer should limit significant
warming with temperatures near or just slightly above normal
Tuesday and Wednesday.

Flow aloft turns more zonal as an approaching trough from the coast
of OR moves inland Thursday. This will mark the transition back to
average temperatures/cooler weather for SoCal and a deeper marine
layer as numerous shortwaves move across NorCal through Saturday.
While models differ slightly with the position of a somewhat
stationary upper level low off the coast of Canada this weekend,
troughing looks to persist over California through at least the
weekend and potentially into early next week.

&&

.AVIATION...
080330Z....Coast/Valleys...The marine layer managed to clear out of
Orange County and northern San Diego County this afternoon/evening,
but BKN-OVC clouds based around 1000-1500ft MSL still persist over
southern San Diego County. These clouds have already begun to nudge
back inland over the last hour or so, and this trend will continue
with clouds filling back in through the coastal mountain slopes,
northward across Orange County, and eventually the Inland Empire by
around 09-11z Sunday. Bases look to lower some overnight, falling
closer to 600-1200ft MSL with VIS reductions 3-5 SM in the valleys
and near higher coastal terrain. Low clouds should clear for the
inland areas through 16-18z Sunday, with partial and intermittent
clearing along the coast Sunday afternoon, especially for Orange
County and into northern San Diego County as was seen today.

Mountains/Deserts...Mostly clear skies and unrestricted VIS
through Sunday evening.

&&

.MARINE...
No 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...None.
PZ...None.

&&

$$

PUBLIC...PG
AVIATION/MARINE...Munyan