San Clemente Island CA to Guadalupe Island from 60 NM offshore west to 120W Offshore Forecast
|Today...N To Nw Winds Less Than 10 Kt. Seas 3 To 5 Ft.|
|Tonight...N To Nw Winds 5 To 15 Kt. Seas 3 To 4 Ft.|
|Wed...Nw Winds 5 To 10 Kt, Becoming 5 To 15 Kt. Seas 3 To 4 Ft.|
|Wed Night...Nw Winds 10 To 15 Kt. Seas 4 To 5 Ft.|
|Thu...Nw Winds 10 To 15 Kt, Becoming 10 To 20 Kt. Seas 4 To 5 Ft.|
|Thu Night...Nw Winds 15 To 20 Kt, Diminishing To 10 To 15 Kt. Seas 4 To 6 Ft.|
|Fri...Nw Winds 10 To 15 Kt. Seas 4 To 5 Ft.|
|Fri Night And Sat...Nw Winds 10 To 15 Kt. Seas 3 To 5 Ft.|
|Sat Night...Nw Winds 10 To 20 Kt, Diminishing To 5 To 15 Kt. Seas 4 To 5 Ft.|
| 128 PM PDT Tue Jul 27 2021 |
Synopsis for the far southern California coast - PZZ700
At 1 PM PDT, a 1023 MB high was 500 NM west of San Francisco, and a 1009 mb low was near Needles. Weak to moderate onshore flow will prevail through Sunday.
| Area Forecast Discussion|
National Weather Service San Diego CA
1255pm PDT Tuesday July 27 2021
Seasonal summer weather is expected this coming week. A persistent marine layer will maintain a cloud cover near the coast nigheights and mornings. Monsoon flow will ebb and flow into the region, bringing small chances of afternoon thunderstorms mainly to the mountains today and Wednesday, and to mountains and deserts Friday and Saturday. It will be warmer through Thursday, then not as warm this weekend.
FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES... Coastal low clouds were slow to clear from the beaches but they'll get sunshine this afternoon. Cumulus clouds have been forming right over the highest mountain ridges, but have struggled to grow into showers or thunderstorms...yet. There is a small chance one or two could Probability of Precipitation later this afternoon, most likely in the Big Bear area. With today's chance of thunderstorms being so marginal and Wednesday looking even less favorable, there is too small of a chance to keep them in the forecast. Thursday looks similar. Cumulus clouds will develop over the mountains each afternoon. High pressure aloft over the interior West will expand slightly into California through Thursday. This should suppress the marine layer a little, for less extensive coastal clouds in time and space. It will also boost temperatures a few degrees, probably reaching a little above normal by Thursday. That would mean parts of the Coachella Valley exceeding 110 degrees. The monsoon moisture flows back into the region Friday and Saturday for greater chances of thunderstorms those days. It still looks like the chance is mainly during afternoons for mountains and deserts. The added humidity and cloud cover should decrease max temperatures inland, but increase the min temps. A trough of low pressure off the coast will gently nudge aside the monsoon moisture on Sunday, ushering in drier air and taking out the chance of thunderstorms. Ensemble guidance is still split on whether the dry-trough scenario maintains the dry forecast next week or if the ridge-wetter scenario would prevail. Most ensemble members are going with the drier idea and so for now, next week looks dry with seasonal temperatures.
No hazardous marine weather is 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.