textproduct: San Francisco Bay Area

KEY MESSAGES

Updated at 102 AM PDT Wed Apr 1 2026

- Cooler conditions continue through Thursday.

- Light rain today through early Thursday morning.

- A warming trend begins on Friday and continues into the weekend.

- Offshore flow returns Friday, with 40-50mph wind gusts expected for interior North Bay mountains.

SHORT TERM

Issued at 102 AM PDT Wed Apr 1 2026 (Today and tonight)

The next round of beneficial rain will move into the North Bay during the morning hours and will gradually spread south the Central Coast by the late afternoon and evening hours. Amounts have come up since the last forecast, with the North Bay mountains having the potential to see up to 0.25-0.75", up to 1.0" for the interior ranges, and around 0.10-.25" of rain for the valleys. The San Francisco Peninsula to Santa Cruz County is forecast to see around 0.1-.30" with up to 0.5" for the Santa Cruz Mountains. Interior East and South Bay valleys will be close to 0.05-0.15" of rain, while the Diablo Range and the Berkeley and San Leandro Hills may see up to 0.5". For interior Monterey and San Benito counties, amounts will be lower and in the 0.0-0.15" range while along the coast and into the Santa Lucias amounts from 0.10-0.30". If traveling today, be mindful that the roadways may be slick.

In addition to the rain, southwesterly winds will gradually pick up and become breezy with gusts up to 20-30 mph, up to 40 mph in areas of higher terrain. Winds are expected to become west-northwest winds expected by late Wednesday into early Thursday morning.

LONG TERM

Issued at 102 AM PDT Wed Apr 1 2026 (Thursday through Tuesday)

Conditions begin to dry up on Thursday, as cold front exits the region and the parent upper low moves into the Intermountain West. High pressure builds into the eastern Pacific which will bing drier into the region. The pressure gradient between these two system will tighten on Friday, bringing warming temperatures and gusty offshore winds. The strongest winds will be across the North Bay interior mountains and East and South Bay mountains with 40-50mph wind gusts expected for interior North Bay mountains. Warmer weather continues into the weekend.

AVIATION

(06Z TAFS) Issued at 939 PM PDT Tue Mar 31 2026

VFR is expected to prevail until early Wednesday morning in the wake of scattered showers across our area earlier today. One exception is KAPC that is already MVFR and is expected to remain so through the forecast period. KSTS will follow suit later during the overnight hours.

Vicinity of SFO...Bay Area terminals are expected to be VFR until later in the overnight hours when cigs drop to MVFR and are expected to remain MVFR through the remainder of the forecast period. Light rain will increase in coverage from late morning through the afternoon hours with breezy southwest winds out ahead of a cold front that arrives later Wednesday night.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...VFR is expected to prevail through the forecast period with a chance of MVFR cigs in the hours surrounding sunrise. There is a slight chance of light rain late in the TAF period but confidence is too low for mention in the TAF attm.

MARINE

(Tonight through next Monday) Issued at 939 PM PDT Tue Mar 31 2026

Fresh to moderate southwesterly breezes tonight out ahead of a cold front will become northwest behind the cold front as it passes through our area late in the day Wednesday into the evening hours. Strong northerly breezes will develop by Thursday afternoon and persist through Friday with moderate seas building to become rough with widespread hazardous conditions. Conditions improve for the weekend.

MTR WATCHES/WARNINGS/ADVISORIES

CA...None. PZ...Small Craft Advisory from 3 PM this afternoon to 3 AM PDT Friday for Mry Bay-Pigeon Pt to Pt Pinos 0-10 nm-Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt Reyes 0-10 nm-Pt Arena to Pt Reyes 10-60 NM-Pt Pinos to Pt Piedras Blancas 0-10 nm-Pt Reyes to Pigeon Pt 0-10 nm-SF Bay N of Bay Bridge.