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Marin County weather alerts

1 active alert for Marin County, California right now: a Beach Hazards Statement.

9 in the last 30 days 9 in 12 months (since Aug 30) most common: Beach Hazards Statement Get alerts on your phone →

Active alerts for Marin County

Refreshed every few minutes; times in PDT.

Moderate Expected

Beach Hazards Statement

Issued Sun, Sep 6, 2:09 PM PDT by NWS San Francisco CA Until Mon, Sep 7, 11:00 PM PDT (in 1 day)

Area: San Francisco; Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast

* WHAT...Increased risk of sneaker waves and strong rip currents due to incoming long period southerly swell associated with tropical activity in the Eastern Pacific Ocean. Breaking waves to around 10 feet expected. * WHERE...Pacific Coast beaches. * WHEN...Through Monday evening. * IMPACTS...Dangerous conditions are forecast along the shoreline. Hazards ...

What it means: Hazards such as rip currents, sneaker waves or cold water are expected at the beach.

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Where

Marin County on the map

Alert polygons are NWS's own. Forecast Bar's radar shows the same warnings over live precipitation, with future radar and lightning. See the radar.

Last 30 days

Recent alerts for Marin County

AlertIssuedEndedIssued by
Beach Hazards Statement Sep 5, 10:37 AM Sep 7, 11:00 PM San Francisco CA
Beach Hazards Statement Sep 4, 9:03 PM Sep 7, 11:00 PM San Francisco CA
Coastal Flood Advisory Sep 4, 8:39 AM Sep 4, 9:00 PM San Francisco CA
Beach Hazards Statement Sep 4, 8:39 AM Cancelled Sep 4, 9:04 PM San Francisco CA
Coastal Flood Advisory Sep 3, 11:21 PM Sep 4, 9:00 PM San Francisco CA
Beach Hazards Statement Sep 3, 11:21 PM Sep 7, 11:00 PM San Francisco CA
Beach Hazards Statement Sep 3, 6:40 AM Sep 7, 11:00 PM San Francisco CA
Beach Hazards Statement Sep 2, 9:26 PM Sep 7, 11:00 PM San Francisco CA

Pattern

What Marin County gets alerted for

Every alert that named Marin County in the last 12 months, by type. Records begin August 30, 2026, so this fills in over the year.

Beach Hazards Statement
7
Coastal Flood Advisory
2

Plain English

What these alerts mean

A warning means the hazard is happening or about to; a watch means conditions favour it; an advisory is a lesser hazard still worth planning around.

Beach Hazards Statement

Hazards such as rip currents, sneaker waves or cold water are expected at the beach.

Coastal Flood Advisory

Minor coastal flooding is expected, usually around high tide. Expect water on low-lying roads near the shore.

Nearby

Alerts near Marin County

Cities in Marin County

San Rafael Novato

Neighbouring counties in California

San Francisco County1 Sonoma County1 Napa County Solano County Contra Costa County Yolo County All of California →

Questions

About Marin County alerts

How do I get Marin County weather alerts on my iPhone?

Install Forecast Bar, add Marin County as a location, and turn on severe weather alerts. Every NWS warning, watch and advisory for Marin County then arrives as a push notification at the moment of issue, with Critical Alerts available for the most dangerous warnings. Forecast Bar also runs on iPad, Apple Watch, Mac and Apple TV.

Where do these alerts come from?

From the National Weather Service alert feed (api.weather.gov). NWS issues alerts by county and by forecast zone; this page lists every product that names Marin County. Forecast Bar checks the feed continuously and this page refreshes within a few minutes of a change.

What is the difference between a watch, a warning and an advisory?

A warning means the hazard is occurring, imminent or very likely: act now. A watch means conditions are favourable for it to develop: prepare and stay informed. An advisory covers a hazard that is less serious than a warning but can still cause real inconvenience or danger if you are not ready for it.

Can I get this data as JSON?

Yes. /weather-alerts/ca/marin-county.json returns the active alerts, the last 30 days and the 12-month counts for Marin County, refreshed every minute. Please cache responses and credit National Weather Service as the source.

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