Half Moon Bay, CA

3:51 PM PST on January 22, 2017 (GMT -0800)
Near Downtown Half Moon Bay | | Change Station

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

Rain
Rain
50.0 °F
Feels Like 49 °F
N
4.2
Wind Variable Wind from NW
Gusts 4.2 mph

Today
High -- | Low -- °F
--% Chance of Precip.
Yesterday
High -- | Low -- °F
Precip. -- in
Pressure 29.71 in
Visibility 3.0 miles
Clouds Few 500 ft
Scattered Clouds 2700 ft
Overcast 4000 ft
Windchill 49 °F
Dew Point 44 °F
Humidity 77%
Rainfall 0.75 in
Snow Depth Not available.
7:19 AM 5:23 PM
Waning Crescent, 23% visible
METAR KHAF 222335Z AUTO 29012G17KT 3SM -RA FEW005 SCT027 OVC040 09/07 A2971 RMK AO2 P0015
Pressure 29.71 in
Visibility 3.0 miles
Clouds Few 500 ft
Scattered Clouds 2700 ft
Overcast 4000 ft
Windchill 49 °F
Dew Point 44 °F
Humidity 77%
Rainfall 0.75 in
Snow Depth Not available.
7:19 AM 5:23 PM
Waning Crescent, 23% visible
METAR KHAF 222335Z AUTO 29012G17KT 3SM -RA FEW005 SCT027 OVC040 09/07 A2971 RMK AO2 P0015

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Watches & Warnings

Areal Flood Warning
Issued: 11:34 AM PST Jan. 22, 2017 – National Weather Service

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

* Flood Warning for...
southeastern Santa Cruz County in northern California...

* until 1130 am PST Monday

* at 1125 am PST, Doppler radar and reporting rain gages indicated a
drastic reduction in local rainfall rates, with the exception of
scattered development of thunderstorms. Local creeks have receded
and are no longer flooding, but ponding water remains in low lying
areas or in areas flooded by overflowing lake basins (college,
Drew, Tynan, Pinto, and Kelly lakes).

* Local ponding may be periodically worsened over the next 24 hours
or so in response to any development of thunderstorms over the
warning area.

* The lower Pajaro river continues to rise and is expected to crest
just below flood stage. High water levels in the lower Pajaro
increase the concerns over levee stability. Adhere to local
emergency management guidance should water levels or levee
conditions cause concern.

* Some locations that will experience flooding include...
Interlaken, Freedom, amesti, College Lake, Pinto Lake, Kelly Lake,
Lake Tynan, Drew Lake, and possibly floodplain areas on the
Monterey (south) side of the river as well (town of pajaro).

Precautionary/preparedness actions...

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

A Flood Warning means that flooding is imminent or occurring. All
interested parties should take necessary precautions immediately.


Lat... Lon 3690 12184 3700 12178 3697 12169 3691 12163
      3690 12164 3690 12165 3692 12166 3690 12168
      3691 12170 3692 12170 3691 12171 3691 12175
      3688 12177 3688 12179 3685 12181


Mws



Areal Flood Advisory, Flash Flood Watch, High Surf Advisory
Issued: 12:27 PM PST Jan. 22, 2017 – National Weather Service

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

* Urban and Small Stream Flood Advisory for...
southwestern Santa Clara County in northern California...
Santa Cruz County in northern California...
San Mateo County in northern California...

* until 630 PM PST Sunday

* at 1222 PM PST, Doppler radar indicated rain showers moving over
the impacted area. These rain showers will gradually increase in
coverage through afternoon and some will intensify into
thunderstorms through the evening. Thunderstorms can bring intense
bursts of rainfall in a short amount of time, overwhelming small
creeks, reservoirs, and drainage areas causing localized flooding.
In addition, additional rainfall on already saturated soils will
cause additional mud and Rockslides and downed trees. Motorists
travelling through these areas should be vigilant for Road hazards
and closed roads.

Precautionary/preparedness actions...

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate Route.

Move away from recently burned areas. Life threatening flooding of
creeks, roads and normally dry arroyos is likely. The heavy rains
will likely trigger Rockslides, mudslides and debris flows in steep
terrain, especially in and around these areas.

Please report flooding to your local law enforcement agency when you
can do so safely.


Lat... Lon 3763 12245 3721 12204 3720 12181 3707 12167
      3692 12170 3691 12175 3686 12181 3697 12190
      3697 12202 3695 12204 3697 12213 3703 12222
      3712 12230 3712 12234 3724 12242 3736 12240
      3750 12246 3750 12250 3753 12252 3759 12252

Drp



1211 PM PST sun Jan 22 2017

... Flash Flood Watch now in effect through Monday afternoon...

The Flash Flood Watch is now in effect 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.

* Through Monday afternoon

* periods of heavy rain on already saturated soils and full
reservoirs will impact the region beginning this afternoon and
lasting through Monday.

* 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.


Drp



247 am PST sun Jan 22 2017

... High surf advisory in effect until 3 am PST Tuesday...
... High surf warning will expire at 3 am PST...

The National Weather Service in San Francisco has issued a high
surf advisory... which is in effect until 3 am PST Tuesday.

* Swell... west swell 14 to 17 feet. Swell periods 15 seconds.

* Surf... breaker heights 25 to 30 ft.

* Timing... continuing through early Tuesday morning.

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

A high surf advisory means that high surf will affect beaches in
the advisory area... producing rip currents and localized beach
erosion.






Small Craft for Rough Bar Advisory, Small Craft Advisory
Issued: 2:12 PM PST Jan. 22, 2017 – National Weather Service

... Small Craft Advisory for rough bar now in effect until 4 PM
PST Monday...
... Small Craft Advisory now in effect until 4 PM PST Tuesday...

The Small Craft Advisory is now in effect until 4 PM PST Tuesday.
The Small Craft Advisory for rough bar is now in effect until
4 PM PST Monday.

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

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
entrances.

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.