National Weather Service Forecast Discussion

Dicussion provided by the National Weather Service Forecast Office located in San Diego, California

000
FXUS66 KSGX 232115
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
130 PM PST Wed Jan 23 2019

.SYNOPSIS...
Fair weather will prevail through at least the middle of next week.
Occasional gusty winds from the northeast will occur mainly below
mountain crests, passes and canyons, with strongest winds Saturday
and possibly next Tuesday or Wednesday. Daytime temperatures will
average above normal.

&&

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

Sunny skies prevail this afternoon with low-elevation temperatures
mostly in the mid to upper 60s, and some stations should top 70
later this afternoon. Winds had decreased with all stations now
having gusts below 30 MPH, mostly less than 15 MPH.

High pressure aloft will prevail off the West Coast through at
least the middle of next week, while most of the US will be under a
cold trough. Offshore flow will prevail as surface high pressure
continues over the Great Basin with 850 MB temperature differences
of 4-8 deg C between the NE and SW sides of the larger SoCal
mountain ranges. A bit of a cold air push over the Great Basin will
enhance the winds a bit Thursday, and a wind advisory has been
issued for some of the windier locations from Orange County to the
San Bernardino Mountains from 4 AM to noon Thursday. Short waves
Friday and especially Saturday will enhance the winds. Most of the
wind gusts at windier locations should be 40-50 MPH Thu/Fri but
could exceed 60 MPH Sat. The offshore flow and increasing temps
aloft, at least those west of the mountains, will bring mild weather
Thu-Sat with widespread 70s to near 80 at lower elevations.

A short-wave oriented east-west will likely move south across the
western US, including California around Tuesday and bring brief
cooling followed by enhanced offshore flow. Longer range model
output shows a possible storm system moving into the West Coast late
next week, but confidence is low at this point as ensembles show a
wide range of solutions.

&&

.AVIATION...
232100Z...Clear skies with unrestricted vis through the period.
Northeast winds may gust to 20 kt at KONT during morning/early
afternoon hours Thursday.

&&

.MARINE...
No hazardous marine weather is forecast through Monday.

&&

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

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...Wind Advisory from 4 AM to noon PST Thursday for Orange County
     Inland Areas-San Bernardino County Mountains-San Bernardino
     and Riverside County Valleys-The Inland Empire-Santa Ana
     Mountains and Foothills.

PZ...NONE.

&&

$$

PUBLIC...Maxwell
AVIATION/MARINE...Rodriguez

NWS SGX Office Area Forecast Discussion