Half Moon Bay, CA (94019)

4:21 AM PST on January 21, 2017 (GMT -0800)
Near Downtown Half Moon Bay | | Change Station

Elev 90 ft 37.46 °N, 122.43 °W | Updated 5 seconds ago

Mostly Cloudy
Mostly Cloudy
51.1 °F
Feels Like 51.1 °F
N
6.9
Wind Variable Wind from WSW
Gusts 6.9 mph

Today
High -- | Low -- °F
--% Chance of Precip.
Yesterday
High -- | Low -- °F
Precip. -- in
Pressure 29.66 in
Visibility 4.0 miles
Clouds Few 300 ft
Mostly Cloudy 2700 ft
Overcast 3400 ft
Dew Point 44 °F
Humidity 72%
Rainfall 0.00 in
Snow Depth Not available.
7:20 AM 5:22 PM
Waning Crescent, 35% visible
METAR KHAF 211215Z AUTO 28014G18KT 4SM HZ FEW003 BKN027 OVC034 11/07 A2966 RMK AO2
Pressure 29.66 in
Visibility 4.0 miles
Clouds Few 300 ft
Mostly Cloudy 2700 ft
Overcast 3400 ft
Dew Point 44 °F
Humidity 72%
Rainfall 0.00 in
Snow Depth Not available.
7:20 AM 5:22 PM
Waning Crescent, 35% visible
METAR KHAF 211215Z AUTO 28014G18KT 4SM HZ FEW003 BKN027 OVC034 11/07 A2966 RMK AO2

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10-Day Weather Forecast

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Jan. 21, 2017 Rise Set
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Minimum magnitude displayed is 2.5.

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Nearby Weather Stations

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

Watches & Warnings

Flash Flood Watch, High Surf Warning
Issued: 3:46 AM PST Jan. 21, 2017 – National Weather Service

... Flash Flood Watch remains in effect from late tonight through
Sunday afternoon...

The Flash 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 Monument... 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 Antonio.

* From late tonight through Sunday afternoon

* periods of heavy rain on already saturated soils will impact
the region from late tonight through Sunday afternoon.
Additional rainfall amounts from 0.75 to 1.5 inches are possible
at lower elevations with 2 to 5 inches across the North Bay and
coastal slopes.

* The primary impacts will be localized ponding of water on low
lying roadways with poor drainage... rapid rises on streams and
creeks with some likely exceeding bankfull... some river
flooding... and potential rock and mud slides. Recent burn scars
will also be susceptible to debris flows during periods of
intense rainfall.

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.




132 am PST Sat Jan 21 2017

... High surf warning remains in effect until 3 am PST Sunday...

* waves and surf... west swell 24 to 28 feet today through early
Sunday morning. Swell periods 14 to 15 seconds.

* Timing... continuing through early Sunday morning.

* Impacts... large breaking waves... strong rip currents... and
sneaker waves.

Precautionary/preparedness actions...

A high surf warning indicates that very dangerous... battering
waves will pound the shoreline. Do not venture near or into the
water... heavy surf will result in deadly rip currents.





High Wind Watch
Issued: 12:51 PM PST Jan. 20, 2017 – National Weather Service

... High wind watch in effect from Saturday evening through Sunday
morning...

The National Weather Service in San Francisco has issued a high
wind watch... which is in effect from Saturday evening through
Sunday morning.

* Timing... 11 PM Saturday evening until 10 am Sunday.

* Winds... sustained southerly winds from 40 to 50 mph with higher
gusts possible... .strongest near the coast and in the higher
terrain.

* Impacts... downed trees... limbs and powerlines will be
possible. Driving of high profile vehicles will be impacted as
well.


Precautionary/preparedness actions...

A high wind watch means there is the potential for a hazardous
high wind event. Sustained winds of at least 40 mph... or gusts of
58 mph or stronger may occur. Continue to monitor the latest
forecasts.




Small Craft for Rough Bar Advisory, Small Craft Advisory, Gale Warning
Issued: 9:08 PM PST Jan. 20, 2017 – National Weather Service

... Small Craft Advisory for rough bar now in effect until 3 am
PST Sunday...
... Small Craft Advisory now in effect until 3 PM PST Saturday...
... Gale Warning remains in effect from 9 PM Saturday to noon PST
Sunday...

* winds: westerly winds 15 to 25 kt through Saturday morning.
Winds will ease Saturday afternoon before quickly
strengthening late Saturday afternoon/evening to 25 to 35 kt
with gust to 45 kt possible.

* Seas: combined seas 20 to 25 ft dominant period 18 seconds...
decreasing to 18 to 21 ft dominant period 17 seconds after
midnight tonight.

* See the coastal waters forecast (cwfmtr) or our marine Page at
http://weather.Gov/sanfrancisco/marine.Php for more details.

Precautionary/preparedness actions...

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.

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
entrances.