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
After a cold start today, temperatures will trend upwards each day through Monday. Fair, dry, and warm weather likely persists through next week. Daytime high temperatures go above seasonal averages tomorrow and increase from there.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
This afternoon, temperatures are 4 to 16 degrees higher in the valleys and coastal areas than at this time yesterday. Variable high clouds moving in from the west will prevent overnight temps from dropping as low as they were this morning but some inland valley areas will still likely fall into the low 40s Sunday morning. Offshore pressure gradients are weakening but the wind- prone areas are still reporting wind gusts of 25-35 mph. Offshore flow will gradually weaken through Sunday before turning weakly onshore Monday afternoon.
A warming trend has begun today as a high pressure ridge builds over the western US. This ridge will dominate our weather pattern through next week, bringing fair and warm weather. Temperatures will trend upward through Monday then fluctuate from day to day peaking again next Friday. On Monday, temperatures will reach the low 80s in the inland valleys and lower deserts...anywhere from 8 to 15 degrees above seasonal averages. All other areas will also be warmer than normal. Next Friday, temperatures will be in the mid to upper 80s west of the mtns and in the low 90s in the lower deserts...12 to 18 degrees above seasonal averages.
Timing the return of marine layer clouds/fog in the coastal areas is uncertain at best but it seems unlikely that they will return before Tuesday. Some models indicate a return of the marine layer clouds/fog for next Wednesday as a shortwave trough passes to the north and weakens the ridge but confidence in this outcome remains low.
AVIATION
211830Z...VFR and sunny skies today with increasing FEW-SCT AOA 25,000ft MSL through the afternoon and into Sunday morning.
MARINE
No marine hazards are expected through Thursday morning.
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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