Marine Weather Net

San Francisco Bay north of the Bay Bridge, including San Pablo Bay, Suisun Bay, and West Delta, CA Marine Forecast


TONIGHT

W
WINDS
10 - 15
KNOTS

WED

W
WINDS
15 - 20
KNOTS

WED NIGHT

W
WINDS
15 - 20
KNOTS

THU

W
WINDS
15 - 20
KNOTS

The Marine Weather Forecast In Detail:
PZZ530 Forecast Issued: 151 PM PDT Tue Jul 05 2022

Tonight...W Winds 10 To 15 Kt, Becoming Sw 5 To 10 Kt After Midnight.
Wed...W Winds 15 To 20 Kt With Gusts Up To 30 Kt.
Wed Night...W Winds 15 To 20 Kt With Gusts Up To 25 Kt.
Thu...W Winds 15 To 20 Kt With Gusts Up To 30 Kt.
Thu Night...Sw Winds 15 To 20 Kt With Gusts Up To 30 Kt.
Fri...Sw Winds 10 To 15 Kt With Gusts Up To 25 Kt.
Fri Night...Sw Winds 10 To 15 Kt.
Sat...Sw Winds 10 To 15 Kt.
Sun...Sw Winds 5 To 10 Kt.
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Area Forecast Discussion
National Weather Service San Francisco Bay Area
541pm PDT Tuesday July 5 2022

Synopsis
A mix of low and mid level clouds continue this afternoon with the potential for drizzle along and near the coast again tomorrow morning. A gradual warming and drying trend begins by midweek, however, below normal temperatures persist today through Friday for the afternoon highs. By Saturday, the region warms back to near to slightly above normal conditions.

As of 02:07pm PDT Tuesday...Observing widespread areas of stratocumulus clouds via satellite and webcams this afternoon. The low to mid levels of the atmosphere continue to have a higher than usual moisture content thanks to the persistent upper level low spinning off the coast of the Pacific NW. The 12z Oakland sounding indicated that precipitable water (AKA PWAT (Precipitable Water) values, which helps to quantify how much water content is in the air) was 1.25 inches, which is around 200% of normal. At the surface, this has translated to higher than normal dewpoints that range from lower to upper 60s (with temperatures currently in the 70s to low 80s), resulting in the air feeling muggy. Peak "mugginess" will likely be today as a drier airmass moves in tonight/tomorrow and PWAT (Precipitable Water) values are forecast to decrease. Similar to this past morning, coastal areas in the North Bay down to the San Mateo coast could see some light drizzle again in the early morning hours Wednesday. Low clouds and patchy fog also likely again overnight into Wednesday morning. Wednesday during the day will see similar temperatures to today (widespread 70s to low 80s).

By Thursday, this anomalous trough that has been parked over the West Coast will begin to break down as high pressure starts to build in from the desert Southwest. This pattern change will be a more typical summer-like pattern for the region. With this pattern shift, a warming trend will commence and more seasonable temperatures across the CWA are expected (60s to 70s near the coast, 80s in the interior). By the weekend, max temperatures will be toasty again with interior regions reaching the low 90s. Heat Risk remains low through Friday, but come Sunday/Monday interior regions will be at a moderate level for heat risk, meaning sensitive populations should use caution. While this warm up won't result in temperatures in the triple digits inland, the increase in temperatures region-wide still worth emphasizing as temps have been below normal the last few days.

Looking further ahead, deterministic and ensemble long range models are in agreement that this broad region of high pressure will persist over much of the Western CONUS into mid July, so this pattern change is likely here to stay for the foreseeable future.

Marine
as of 02:12pm PDT Tuesday...Winds over the waters remain light to breezy and will continue as such through Wednesday morning. Winds will increase along the immediate coastline south of Pigeon Point and down the Big Sur coast Wednesday afternoon which can cause hazardous seas for smaller craft. A 7 to 10 second west swell arrives Tuesday night while a longer period southerly swell prevails through the late week. Winds increase over the weekend for a return to a stronger wind-wave driven sea state.

NOAA San Francisco Bay Area Office: Watches - Warnings - Advisories
Tonight:
NONE.