California, 2021

Coastal Flood in California, January 11 to 12, 2021

January 11 to 12, 2021 · NWS MTR · 7 events in 5 counties and zones

King Tides returned to the California coast in mid January coinciding with increased northwest swell. High tide at San Francisco on Monday and Tuesday the 11-12th reached just under 7 feet.

Where it happened

Every event with a place to put it; 7 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
7

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS MTR wrote it up.

King Tides returned to the California coast in mid January coinciding with increased northwest swell. High tide at San Francisco on Monday and Tuesday the 11-12th reached just under 7 feet. The combination of these events led to minor flooding of low lying coastal areas.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS San Francisco Bay Area, CA wrote its last area forecast discussion before the first event at Jan 10, 1:23 PM PST, 19 hours 22 minutes earlier.

Area forecast discussion, Jan 10, 1:23 PM PST, 19 hours 22 minutes before
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The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

7 coastal flood. Local standard time, as filed.

Coastal Flood, Southern Monterey Bay and Big Sur Coast

When
January 11, 8:45 AM PST to 10:00 AM PST
Where
Southern Monterey Bay and Big Sur Coast forecast zone
Reported by
Public
Coordinates
36.240, -121.309 (the zone’s center; the record gives no point)

Photo showing was er intruding up staircase at San Carlos Beach in Monterey.

Coastal Flood, Coastal North Bay Including Point Reyes National Seashore

When
January 11, 10:00 AM PST to 11:00 AM PST
Where
Coastal North Bay Including Point Reyes National Seashore forecast zone
Reported by
Public
Coordinates
38.290, -122.835 (the zone’s center; the record gives no point)

Photo showing flooding at the Richardson Bay Marina near Sausalito.

Coastal Flood, San Francisco Bay Shoreline

When
January 11, 10:30 AM PST to 11:30 AM PST
Where
San Francisco Bay Shoreline forecast zone
Reported by
Public
Coordinates
37.561, -121.980 (the zone’s center; the record gives no point)

Flooding in Bucks Landing parking lot in las Gallinas Creek.

Coastal Flood, Northern Monterey Bay

When
January 12, 10:00 AM PST to 11:00 AM PST
Where
Northern Monterey Bay forecast zone
Reported by
Public
Coordinates
37.022, -122.010 (the zone’s center; the record gives no point)

Photo showing water intruding into the Santa Cruz Small Craft Harbor.

Coastal Flood, Coastal North Bay Including Point Reyes National Seashore

When
January 12, 10:15 AM PST to 11:15 AM PST
Where
Coastal North Bay Including Point Reyes National Seashore forecast zone
Reported by
Public
Coordinates
38.290, -122.835 (the zone’s center; the record gives no point)

Photo showing flooding at the Manzanita Park and Ride near Sausalito.

Coastal Flood, San Francisco Bay Shoreline

When
January 12, 11:00 AM PST to 12:00 PM PST
Where
San Francisco Bay Shoreline forecast zone
Reported by
Public
Coordinates
37.561, -121.980 (the zone’s center; the record gives no point)

Flooding in parking lot of the Lowrie Yacht Harbor and a Mooring Rd.

Coastal Flood, San Francisco

When
January 12, 11:00 AM PST to 12:00 PM PST
Where
San Francisco forecast zone
Reported by
Public
Coordinates
37.778, -122.442 (the zone’s center; the record gives no point)

Flooding on Pier 14 in San Francisco.

What these are

Coastal Flood
Flooding of coastal land by the sea, from storm surge, onshore wind or high tides.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in California in 2021Every state in 2021This day in weather historyWarnings in California, January 2021

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 944328, 944318, 944321, 944324, 944319, 944320, 944323.