San Francisco County, California
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Watch/Warnings
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The National Weather Service's Watches, Warnings and Advisories by state counties include: Thunderstorm, Tornado, Flood, Flash Flood, Winter Storm, High Wind, Gale, Small Aircraft, High Surf, Marine, Heat, Air Quality, Ashfall, Hazardous, and Special Statements.
Weather Alerts: San Francisco County, California
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Coastal Flood Advisory
CAZ006-505-509-529-530-170700-
/O.NEW.KMTR.CF.Y.0001.190117T1300Z-190117T1700Z/
/O.CON.KMTR.SU.W.0001.190117T1300Z-190119T0100Z/
San Francisco-
Coastal North Bay Including Point Reyes National Seashore-
San Francisco Peninsula Coast-Northern Monterey Bay-
Southern Monterey Bay and Big Sur Coast-
1053 AM PST Wed Jan 16 2019

...COASTAL FLOOD ADVISORY IN EFFECT FROM 5 AM TO 9 AM PST
THURSDAY...
...HIGH SURF WARNING REMAINS IN EFFECT FROM 5 AM THURSDAY TO 5 PM
PST FRIDAY...

The National Weather Service in San Francisco has issued a
Coastal Flood Advisory, which is in effect from 5 AM to 9 AM PST
Thursday.

* COASTAL FLOODING...Low-lying areas along the immediate coast,
bay front, marshes and sloughs may experience minor flooding.
These locations may include parking lots, coastal trails,
sidewalks and even roadways that are not ordinarily affected by
the tides.

* WAVES AND SURF...A large and long period west swell of 16 to 24
feet will arrive along the coastline beginning early Thursday
morning. Expect breakers of 25 to 30 feet through the day
Thursday, with favored locations occasionally exceeding 40
feet.

* TIMING...WAVES AND SURF: Energetic waves will build early
Thursday morning, peaking during the day Thursday before
gradually subsiding on Friday. COASTAL FLOOD: Most sites will
peak between 7 and 8 am Thursday morning. The exact height and
timing of these tides will vary by location on Monday. Please
visit https://tidesandcurrents.noaa.gov/ports for location
specific tidal prediction.

* IMPACTS...WAVES AND SURF: Large breaking waves along the coast
will lead to increased wave run-up on beaches with waves topping
and washing over large rocks and jetties. They can easily move
large logs and other beach debris and cause localized beach
erosion. Localized coastal flooding is possible. Use extreme
caution near the surf zone as these large waves will be capable
of sweeping people into the frigid and turbulent ocean water.
Cold water shock may cause cardiac arrest, and it also can cause
an involuntary gasp reflex causing drowning, even for a good
swimmer. The surf zone will be very dangerous due to strong
currents and powerful breaking waves. COASTAL FLOOD: Sea water
on roadways, parking lots, trails and sidewalks. Beachgoers may
lose entry and exit paths to coves and narrow beaches during
high tides.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Surf Warning indicates that dangerous, battering waves are
expected to pound the shoreline, bringing potentially damaging
and life-threatening conditions. It is advised that people remain
away from the shoreline during this event, especially staying off
rocks, jetties and beaches.

A Coastal Flood Advisory indicates that onshore winds and tides
will combine to generate flooding of low areas along the shore.

&&

$$

Flash Flood Watch
CAZ006-505>513-517-528>530-171030-
/O.CON.KMTR.FF.A.0001.190116T2300Z-190117T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
San Francisco-
Coastal North Bay Including Point Reyes National Seashore-
North Bay Interior Valleys-North Bay Mountains-
San Francisco Bay Shoreline-San Francisco Peninsula Coast-
East Bay Interior Valleys-East Bay Hills and the Diablo Range-
Santa Cruz Mountains-Santa Clara Valley Including San Jose-
Santa Lucia Mountains and Los Padres National Forest-
Northern Salinas Valley/Hollister Valley and Carmel Valley-
Northern Monterey Bay-Southern Monterey Bay and Big Sur Coast-
Including the cities of San Francisco, Tamalpais-Homestead,
Sausalito, Santa Rosa, South Santa Rosa, Napa, San Rafael,
Petaluma, Novato, Rohnert Park, Angwin, Lagunitas-Forest Knolls,
Woodacre, Oakland, Fremont, Hayward, Daly City, Berkeley,
Pacifica, Concord, Antioch, Livermore, Walnut Creek, Pleasanton,
Pittsburg, San Ramon, Blackhawk, Scotts Valley, Boulder Creek,
Day Valley, San Jose, Salinas, Santa Cruz, Watsonville, Live Oak,
Seaside, Monterey, and Marina
1215 PM PST Wed Jan 16 2019

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT...

The Flash Flood Watch continues for

* The Bay Area and Central Coast of California

* Through late tonight

* A strong cold front will bring heavy rain this afternoon
through early Thursday morning. Urban and small stream
flooding will become likely along with rapid rises on main
stem rivers. Small creeks and streams may rapidly rise near or
above bankfull.

* Take action now to protect property by sand bagging flood
prone locations.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

$$
Flood Advisory
CAC001-013-075-081-170445-
/O.NEW.KMTR.FA.Y.0007.190116T2244Z-190117T0445Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Alameda CA-San Mateo CA-Contra Costa CA-San Francisco CA-
244 PM PST WED JAN 16 2019

The National Weather Service in The San Francisco Bay Area has issued
a

* Urban and Small Stream Flood Advisory for...
Western Alameda County in northern California...
Northern San Mateo County in northern California...
Southwestern Contra Costa County in northern California...
San Francisco County in northern California...

* Until 845 PM PST Wednesday.

* At 243 PM PST, Doppler radar and automated rain gauges indicated
heavy rain which will cause urban and small stream flooding in the
advisory area through the evening commute across the major Bay
Area highways.

* Some locations that will experience flooding include...
San Francisco, Oakland, Fremont, Hayward, Berkeley, Richmond, Daly
City, San Mateo, San Leandro, Redwood City, Alameda, Union City,
Palo Alto, South San Francisco, Newark, San Bruno, Pacifica, Menlo
Park, Foster City and San Pablo.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3779 12252 3804 12229 3759 12200 3752 12188
3747 12191 3746 12197 3747 12204 3746 12205
3748 12208 3746 12210 3747 12211 3745 12213
3745 12216 3741 12219 3740 12225 3761 12243
3765 12250

$$
High Surf Warning
CAZ006-505-509-529-530-170700-
/O.NEW.KMTR.CF.Y.0001.190117T1300Z-190117T1700Z/
/O.CON.KMTR.SU.W.0001.190117T1300Z-190119T0100Z/
San Francisco-
Coastal North Bay Including Point Reyes National Seashore-
San Francisco Peninsula Coast-Northern Monterey Bay-
Southern Monterey Bay and Big Sur Coast-
1053 AM PST Wed Jan 16 2019

...COASTAL FLOOD ADVISORY IN EFFECT FROM 5 AM TO 9 AM PST
THURSDAY...
...HIGH SURF WARNING REMAINS IN EFFECT FROM 5 AM THURSDAY TO 5 PM
PST FRIDAY...

The National Weather Service in San Francisco has issued a
Coastal Flood Advisory, which is in effect from 5 AM to 9 AM PST
Thursday.

* COASTAL FLOODING...Low-lying areas along the immediate coast,
bay front, marshes and sloughs may experience minor flooding.
These locations may include parking lots, coastal trails,
sidewalks and even roadways that are not ordinarily affected by
the tides.

* WAVES AND SURF...A large and long period west swell of 16 to 24
feet will arrive along the coastline beginning early Thursday
morning. Expect breakers of 25 to 30 feet through the day
Thursday, with favored locations occasionally exceeding 40
feet.

* TIMING...WAVES AND SURF: Energetic waves will build early
Thursday morning, peaking during the day Thursday before
gradually subsiding on Friday. COASTAL FLOOD: Most sites will
peak between 7 and 8 am Thursday morning. The exact height and
timing of these tides will vary by location on Monday. Please
visit https://tidesandcurrents.noaa.gov/ports for location
specific tidal prediction.

* IMPACTS...WAVES AND SURF: Large breaking waves along the coast
will lead to increased wave run-up on beaches with waves topping
and washing over large rocks and jetties. They can easily move
large logs and other beach debris and cause localized beach
erosion. Localized coastal flooding is possible. Use extreme
caution near the surf zone as these large waves will be capable
of sweeping people into the frigid and turbulent ocean water.
Cold water shock may cause cardiac arrest, and it also can cause
an involuntary gasp reflex causing drowning, even for a good
swimmer. The surf zone will be very dangerous due to strong
currents and powerful breaking waves. COASTAL FLOOD: Sea water
on roadways, parking lots, trails and sidewalks. Beachgoers may
lose entry and exit paths to coves and narrow beaches during
high tides.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Surf Warning indicates that dangerous, battering waves are
expected to pound the shoreline, bringing potentially damaging
and life-threatening conditions. It is advised that people remain
away from the shoreline during this event, especially staying off
rocks, jetties and beaches.

A Coastal Flood Advisory indicates that onshore winds and tides
will combine to generate flooding of low areas along the shore.

&&

$$

High Wind Warning
CAZ006-505-507-509-511-512-517-518-529-530-171030-
/O.CON.KMTR.HW.W.0001.190116T2100Z-190117T1100Z/
San Francisco-
Coastal North Bay Including Point Reyes National Seashore-
North Bay Mountains-San Francisco Peninsula Coast-
East Bay Hills and the Diablo Range-Santa Cruz Mountains-
Santa Lucia Mountains and Los Padres National Forest-
Mountains Of San Benito County And Interior Monterey County
Including Pinnacles National Park-Northern Monterey Bay-
Southern Monterey Bay and Big Sur Coast-
Including the cities of San Francisco, Tamalpais-Homestead,
Sausalito, Angwin, Lagunitas-Forest Knolls, Woodacre, Pacifica,
Blackhawk, Scotts Valley, Boulder Creek, Day Valley, Santa Cruz,
Watsonville, Live Oak, Seaside, Monterey, and Marina
1241 PM PST Wed Jan 16 2019

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 AM PST THURSDAY...

* WINDS...South 30 to 40 mph with gusts up to 55 mph turning Southwest
overnight.

* TIMING...Strong winds will continue this afternoon through late tonight
as a strong cold front moves through the Bay Area.

* IMPACTS...Strong winds may blow down limbs, trees, and power
lines. Scattered power outages are expected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

National Weather Service

Providing "weather, water cycle, and climate forecasts and warnings for the United States, its territories, adjacent waters and ocean areas, for the protection of life and property and the enhancement of the national economy."
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