Swell Matrix

Area Forecast Discussion

National Weather Service San Francisco CA

1056 am PDT Thu apr 25 2024

Synopsis

Issued at 1201 AM PDT Thu Apr 25 2024

Cool temperatures will continue today. A cold front will bring a chance for light rain beginning tonight, with strong winds Friday night. Increasing sunshine will kick off a warming trend Sat-Tue.

Aviation

(18z TAFS) Issued at 1056 AM PDT Thu Apr 25 2024

Satellite shows low ceilings shuffling through the region causing MVFR conditions over most of the terminals. Onshore winds will continue to build to breezy and gusty through the afternoon with some terminals seeing relief overnight to moderate winds. SF Bay terminals are expected to remain gusty and breezy through the TAF period. Stratus may lift to VFR for brief moments this afternoon before lower ceilings will return tonight bringing a mix of VFR/MVFR conditions overnight. VFR is expected to return by Friday morning.

Vicinity of SFO, MVFR with W/NW breezy and gusty winds. Models suggest a short brief moment of VFR near the afternoon but had low confidence to include in TAFs. If lifting does occur, expect MVFR conditions to linger near by the terminals. Winds will remain breezy and gusty through the TAF period.

SFO Bridge Approach, Similar to SFO.

Monterey Bay Terminals, MVFR through most of the TAF period for KMRY but KSNS may see a temporary lift to VFR this afternoon. Winds will become breezy and gusty this afternoon, before transitions to moderate overnight. VFR expected to prevail after 12Z.

Marine

Issued at 1056 AM PDT Thu Apr 25 2024

Moderate northwesterly winds persist through Friday morning with occasional fresh to strong gusts through various portions of the coastal waters, mostly in the southern waters. Winds strengthen to become strong and gusty into Friday afternoon with gale-force gusts likely near the Big Sur coast. These strong and gusty northwesterly winds last through the weekend and into at least the early portion of next week, bringing hazardous conditions for small craft vessels. Moderate period northwest swell will continue to move through the waters this weekend, with a new longer period northwest swell train entering the waters Sunday. Light, long period southerly swell continues through end of forecast period.

Watches, Warnings, Advisories

Ca, none. Pz, small craft advisory until 9 pm PDT this evening for mry bay.

small craft advisory from 9 am to 3 pm PDT Friday for mry bay- pigeon pt to pt pinos 0-10 nm-pigeon pt to pt pinos 10-60 nm.

small craft advisory until 3 pm PDT this afternoon for pigeon pt to pt pinos 10-60 nm-pt arena to pt reyes 0-10 nm-pt pinos to pt piedras blancas 0-10 nm-pt reyes to pigeon pt 0-10 nm.

small craft advisory from 3 pm this afternoon to 9 pm PDT this evening for pigeon pt to pt pinos 0-10 nm.

gale warning from 3 pm this afternoon to 9 pm PDT this evening for pt pinos to pt piedras blancas 0-10 nm.

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