Marine Weather Net

San Mateo Point to the Mexican Border from 30 to 60 nm out including San Clemente Island Marine Forecast


TONIGHT

NW
WINDS
10 - 15
KNOTS

WED

NW
WINDS
10 - 15
KNOTS

WED NIGHT

NW
WINDS
10 - 15
KNOTS

THU

NW
WINDS
10 - 15
KNOTS

The Marine Weather Forecast In Detail:
PZZ775 Forecast Issued: 128 PM PDT Tue Jul 27 2021

Tonight...Wind Nw 10 To 15 Kt. Wind Waves 3 Ft In The Evening... Becoming 2 Ft Or Less. Mixed Swell Nw 2 To 3 Ft At 9 Seconds And S 2 Ft At 13 Seconds.
Wed...Wind Nw 10 To 15 Kt. Wind Waves 2 Ft Or Less...Becoming 3 Ft In The Afternoon. Mixed Swell Nw 2 To 3 Ft At 9 Seconds And S 2 Ft At 13 Seconds.
Wed Night...Wind Nw 10 To 15 Kt. Wind Waves 3 Ft. Mixed Swell Nw 3 Ft At 6 Seconds And S 2 Ft At 12 Seconds.
Thu...Wind Nw 10 To 15 Kt With Gusts To 20 Kt. Wind Waves 4 Ft. Mixed Swell Nw 3 To 4 Ft At 6 Seconds And S 2 Ft At 12 Seconds.
Thu Night...Wind Nw 10 To 15 Kt. Wind Waves 3 Ft In The Evening...Becoming 2 Ft Or Less. Mixed Swell Nw 3 To 4 Ft At 6 Seconds And S 2 Ft At 13 Seconds.
Fri...Wind W 10 Kt. Gusts To 15 Kt In The Afternoon. Wind Waves 2 Ft Or Less...Becoming 3 Ft In The Afternoon. Mixed Swell Nw 3 Ft And S 1 To 2 Ft.
Fri Night...Wind Nw 10 Kt. Gusts To 15 Kt In The Evening. Wind Waves 3 Ft In The Evening...Becoming 2 Ft Or Less. Mixed Swell W 3 Ft And S 1 Ft.
Sat...Wind Nw 10 To 15 Kt. Wind Waves 2 Ft Or Less...Becoming 3 Ft In The Afternoon. Mixed Swell W 2 To 3 Ft And S 1 Ft.
Sat Night...Wind W 10 Kt. Gusts To 15 Kt In The Evening. Wind Waves 3 Ft In The Evening...Becoming 2 Ft Or Less. Mixed Swell W 2 To 3 Ft And S 1 To 2 Ft.
Sun...Wind W 10 To 15 Kt. Wind Waves 2 Ft Or Less... Becoming 3 Ft In The Afternoon. Mixed Swell W 2 To 3 Ft And S 1 To 2 Ft.
Sun Night...Wind Nw 10 To 15 Kt. Wind Waves 3 Ft. Mixed Swell W 3 Ft And S 2 Ft.
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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
829pm PDT Tuesday July 27 2021

Synopsis
Seasonal summer weather is expected this coming week. A persistent marine layer will maintain night and morning low clouds near the coast nigheights and mornings. Monsoon flow will ebb over the next couple of days, and then increase again Friday into the weekend, bringing a chance for more showers and thunderstorms. It will be warmer through Thursday, then a little cooler into the weekend.

FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES... After a few showers and thunderstorms over our highest mountains and high desert areas this afternoon, just patchy high clouds were left at 7pm PDT. A patch of low clouds was visible along the San Diego County Coast as well, otherwise the CA Bight was mostly clear. Our 00Z Miramar sounding had 6C marine inversion near 1200 FT MSL. The atmosphere has dried a bit more and become a bit more stable and that should continue into tomorrow.

Low clouds will develop over coastal areas again tonight and tomorrow night, but should burn off each day. No forecast changes this evening.

From previous discussion... 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.

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

.SGX WATCHES/WARNINGS/ADVISORIES... CA...NONE. PZ...NONE.