textproduct: San Diego
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
SYNOPSIS
Warming conditions for inland locations through Thursday. Coastal low clouds and fog will be present each night and morning, reaching into portions of the valleys. Cooling conditions expected Friday through Sunday with a few degrees of warming Monday and next Tuesday.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
An upper level area of low pressure currently over the California Bight will slowly move south and east Wednesday and Thursday. High temperatures today are expected to be similar to Monday's, with warming conditions for Wednesday and Thursday as weak ridging develops over Southern California. The mid-week warming will bring highs to 5 to 10 degrees above average for the valleys, mountains, and deserts and 3 to 6 degrees above average along the coast. Night and morning low clouds and fog will spread from the coast into the valleys tonight into Wednesday morning becoming shallower into Thursday morning, only reaching the western valleys.
An area of low pressure will approach the Pacific Northwest Friday, digging south into California by Sunday. This weather system will bring a few degrees of cooling each day Friday through Sunday, taking temperatures for inland locations to few degrees below normal. Additionally, the marine layer will deepen again with low clouds expected to reach into the valleys.
For Monday, weak troughing looks like it remains over California keeping highs slightly below average. By next Tuesday the NBM shows a few degrees of warming which will bring highs to just above average.
AVIATION
030430Z...Coast/Valleys...Low clouds based 1500-2000 ft MSL have redeveloped over coastal San Diego County this evening. Clouds expand northward and inland overnight, eventually reaching into portions of the Inland Empire by 12z. 70% chance for cigs at KONT and 50% at KSBD. Minor vis reductions (4-6SM) for elevated inland valleys. Scattering to the coastline by 17-18z Wed. Low clouds return to coastal areas Wed evening with lower bases around 1000- 1500 ft MSL. Less inland extent Wednesday night with clouds remaining confined to coastal areas and western valleys.
Mountains/Deserts...Mostly clear skies and VFR conditions through Wednesday evening. .
MARINE
No hazardous marine conditions are expected through Sunday.
SKYWARN
Skywarn activation is not requested. However weather spotters are encouraged to report significant weather conditions.
SGX WATCHES/WARNINGS/ADVISORIES
CA...None. PZ...None.
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