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
Night and morning low clouds and fog will be present each day through the forecast period along the coast for the first half of the week and into portions of the valleys towards the end of the week. High temperatures will be below average in the deserts today and tomorrow, with highs 5 to 10 degrees above average west of the mountains for the first half of the week. Minor fluctuations in temperatures for Thursday through next weekend.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
Weak offshore flow through Wednesday will keep low clouds out of the inland valleys but won't be strong enough to keep coastal areas clear of low clouds overnight and in the mornings. It should help with more efficient clearing in the afternoons through Wednesday. A noticeable warming expected today compared to yesterday with the inland valleys expected to be 8 to 15 degrees warmer. An additional 3 to 7 degrees of warming is expected on Tuesday from the coast to the deserts, with continued warming inland Wednesday.
The marine layer is expected to deepen Wednesday night into Thursday, which will push low clouds and fog into the inland valleys. A deeper marine layer is expected to be maintained through the weekend. There will be slight day-to-day differences in high temperatures for Thursday through next weekend with high temperatures a few to around 5 degrees above average.
AVIATION... 181800Z...Coast/Valleys
Low clouds have cleared most areas in OC and the Inland Empire, with low clouds with bases 2500- 4000ft MSL clinging to inland and coastal San Diego county for another hour or two. Low clouds may return this evening (30-50%) to coastal areas with the highest chances in coastal San Diego between 13-17Z. if low clouds do develop, bases would be AOA 1500ft MSL.
Mountains/Deserts...Northerly winds will bring gusts 25-35 knots through and below mountain passes through 20-22Z. Pockets of LLWS and downdrafts in lee (south and west) of mountains will be possible.
MARINE
No hazardous marine conditions are expected through Saturday.
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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