San Francisco, CA

4:07 PM PST on February 20, 2017 (GMT -0800)
SFSU / Lakeside | | Change Station

Elev 184 ft 37.72 °N, 122.47 °W | Updated 9 seconds ago

55.0 °F
Feels Like 55.0 °F
Wind Variable Wind from SSE

High -- | Low -- °F
--% Chance of Precip.
High -- | Low -- °F
Precip. -- in
Pressure 29.90 in
Visibility 3.0 miles
Clouds Scattered Clouds 2800 ft
Overcast 3500 ft
Dew Point 10 °F
Humidity 16%
Rainfall 1.59 in
Snow Depth Not available.
6:52 AM 5:54 PM
Waning Crescent, 30% visible
METAR KSFO 202356Z VRB05KT 3SM R28R/3000VP6000FT +RA BR SCT028 OVC035 13/12 A2990 RMK AO2 SLP124 P0021 60050 T01330117 10144 20133 56021 $
Pressure 29.90 in
Visibility 3.0 miles
Clouds Scattered Clouds 2800 ft
Overcast 3500 ft
Dew Point 10 °F
Humidity 16%
Rainfall 1.59 in
Snow Depth Not available.
6:52 AM 5:54 PM
Waning Crescent, 30% visible
METAR KSFO 202356Z VRB05KT 3SM R28R/3000VP6000FT +RA BR SCT028 OVC035 13/12 A2990 RMK AO2 SLP124 P0021 60050 T01330117 10144 20133 56021 $

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What may become known as the President’s Day Storm of 2017 barreled into the San Francisco Bay area on Monday morning. Heavy rains and localized flooding may develop across the region. High winds later Monday could bring down trees and cause widespread, prolonged power outages from the Bay Area toward Sacramento.

10-Day Weather Forecast



Feb. 20, 2017 Rise Set
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Civil Twilight
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Air Quality

  Air Quality AQ Index Pollutant
Not available.

Snow Depth

Station Depth Elevation

Earthquake Activity

City Distance Mag. Time & Date
Minimum magnitude displayed is 2.5.

Coastal Water Temperatures

Place Temperature


Nearby Weather Stations

Station Location Temp. Windchill Dew Point Humidity Wind Precip. Elev Updated Type

Watches & Warnings

Areal Flood Advisory, Areal Flood Watch
Issued: 1:32 PM PST Feb. 20, 2017 – National Weather Service

The National Weather Service in the San Francisco Bay area has issued

* urban and small stream flood advisory for...
Napa County in northern California...
Sonoma County in northern California...
San Francisco County in northern California...
Marin County in northern California...
northwestern San Mateo County in northern California...

* until 430 PM PST

* at 130 PM PST, Doppler radar indicated heavy rain causing urban
and small stream flooding in the advisory area. Moderate to heavy
rain is expected through this afternoon leading to additional

* Some locations that will experience flooding include...
San Francisco, Santa Rosa, Daly City, San Mateo, Napa, South San
Francisco, Petaluma, San Rafael, Novato, San Bruno, Rohnert Park,
Pacifica, Burlingame, Millbrae, Windsor, American Canyon, Mill
Valley, San Anselmo, Larkspur and Healdsburg.

Precautionary/preparedness actions...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Lat... Lon 3877 12354 3885 12282 3867 12261 3871 12246
      3881 12237 3886 12240 3883 12228 3833 12206
      3832 12221 3815 12220 3816 12240 3813 12235
      3811 12249 3794 12251 3757 12232 3758 12249
      3782 12252 3802 12286 3800 12302 3826 12297


512 am PST Mon Feb 20 2017

... Flood Watch remains in effect through late tonight...

The Flood Watch continues for

* a portion of western California... including the following
areas... coastal North Bay including Point Reyes National
Seashore... East Bay hills and the Diablo Range... East Bay
interior valleys... mountains of San Benito County and interior
Monterey County including Pinnacles National Park... North Bay
interior valleys... North Bay mountains... northern Monterey
Bay... northern Salinas valley/Hollister Valley and Carmel
Valley... San Francisco... San Francisco Bay shoreline... San
Francisco peninsula coast... Santa Clara Valley including San
Jose... Santa Cruz Mountains... Santa Lucia mountains and Los
Padres National Forest... southern Monterey Bay and Big Sur
coast and southern Salinas valley/Arroyo Seco and Lake San

* Through late tonight

* a prolonged period of moderate to heavy rainfall is anticipated
to fall on already saturated soils through Monday evening. This
will result in sharp rises on area creeks, streams and rivers and
will likely result in flooding.

* Impacts include enhanced runoff and associated flooding in low
lying areas and waterways, rising water levels and flooding on
area streams, creeks and rivers. Other impacts include increased
risk of rock/mud slides in steep terrain, downed trees and power
lines, and damaged to or washed out roadways.

Precautionary/preparedness actions...

A Flood Watch means there is a potential for flooding based on
current forecasts.

You should monitor later forecasts and be alert for possible
flood warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.

High Wind Warning
Issued: 5:23 AM PST Feb. 20, 2017 – National Weather Service

... Wind Advisory remains in effect until 1 PM PST this
... High Wind Warning remains in effect from 1 PM this afternoon
to 3 am PST Tuesday...

* timing... southeast winds increase through this morning and then
further intensify this afternoon. Strongest southerly winds
expected this afternoon and evening. Winds diminish late

* Winds... sustained southerly winds 15 to 25 mph with gusts to 45
mph. Winds increasing to 25 to 40 mph this afternoon and evening
with gusts to 60 mph.

* Impacts... winds may be strong enough to cause property damage.
Strong and gusty winds will make driving difficult, especially
for drivers of high profile vehicles. Saturated soils will also
contribute to an increased risk of downed trees and powerlines.

Precautionary/preparedness actions...

A Wind Advisory means that wind gusts of at least 45 mph are
expected. Winds this strong can make driving difficult...
especially for high profile vehicles. Use extra caution. Winds
this strong combined with saturated soils can result in downed
trees and power outages.

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

Gale Warning, Small Craft for Rough Bar Advisory
Issued: 2:24 PM PST Feb. 20, 2017 – National Weather Service

... Gale Warning remains in effect until 6 am PST Tuesday...
... Small Craft Advisory for rough bar remains in effect until
5 PM PST Tuesday...

* winds: southerly winds 25 to 35 kt..with gusts to 40 kt
through tonight.

* Seas: combined seas 9 to 14 ft dominant period 15 seconds.

Precautionary/preparedness actions...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
are expected to produce hazardous wave conditions to small craft.
Inexperienced mariners... especially those operating smaller
vessels should avoid navigating in these conditions.

A Small Craft Advisory for rough bar means that wave conditions
are expected to be hazardous to small craft in or near Harbor

A Gale Warning means winds of 34 to 47 knots are imminent or
occuring. Operating a vessel in gale conditions requires
experience and properly equipped vessels. It is highly
recommended that mariners without the proper experience seek safe
Harbor prior to the onset of gale conditions.