Mount Hamilton, CA (95140)

6:25 PM PST on February 20, 2017 (GMT -0800)
Halls Valley | | Change Station

Elev 2275 ft 37.34 °N, 121.73 °W | Updated 51 seconds ago

Rain
Rain
50.9 °F
Feels Like 50.9 °F
N
0.0
Wind Variable Wind from West
Gusts 3.0 mph

Today
High -- | Low -- °F
--% Chance of Precip.
Yesterday
High -- | Low -- °F
Precip. -- in
Pressure 30.01 in
Visibility 2 miles
Clouds
Dew Point 51 °F
Humidity 100%
Rainfall 1.57 in
Snow Depth Not available.
6:49 AM 5:52 PM
Waning Crescent, 29% visible
Not available.
Pressure 30.01 in
Visibility 2 miles
Clouds
Dew Point 51 °F
Humidity 100%
Rainfall 1.57 in
Snow Depth Not available.
6:49 AM 5:52 PM
Waning Crescent, 29% visible
Not available.

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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.

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Minimum magnitude displayed is 2.5.

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

Watches & Warnings

Flash Flood Warning, Areal Flood Warning
Issued: 5:03 PM PST Feb. 20, 2017 – National Weather Service

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

* Flash Flood Warning for...
northwestern Santa Clara County in northern California...

* until 630 PM PST

* at 457 PM PST, a stream gage on the upper penitencia creek near
Alum Rock Park indicated minor flooding was occurring.

* Some locations that will experience flooding include...
neighborhoods along upper penitencia creek.

Precautionary/preparedness actions...

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

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

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


Lat... Lon 3738 12185 3739 12186 3740 12179 3738 12179
      3739 12182


Blier


434 PM PST Mon Feb 20 2017

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

* Flash Flood Warning for...
south central Alameda County in northern California...

* until 630 PM PST

* at 430 PM PST, stream gages on The Alameda creek indicated minor
flooding was occurring along The Alameda creek in Niles Canyon
with flooding also occuring upstream near Sunol. Moderate to heavy
rain is forecast to continue across The Alameda creek basin
through early evening which will result in continued flooding and
could result in further rises on the creek.

* Some locations that will experience flooding include...
Niles Canyon, areas near Alameda creek and local tributary creeks.

Precautionary/preparedness actions...

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

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.


Lat... Lon 3761 12195 3761 12184 3760 12180 3758 12176
      3755 12175 3753 12177 3756 12180 3755 12183
      3752 12181 3750 12174 3749 12176 3749 12183
      3758 12191 3758 12194 3756 12195 3758 12200




413 PM PST Mon Feb 20 2017

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

* Flash Flood Warning for...
southeastern Santa Clara County in northern California...
northwestern San Benito County in central California...

* until 1000 PM PST

* at 400 PM PST, stream gage reports indicated flooding on the
Pacheco creek near Dunneville. At 4 PM PST the water level on the
creek near Dunneville was at 13.1 feet and water levels were
continuing to rise. Flooding begins around 10 feet. Streamflow
forecasting suggests water levels may reach 16.4 feet by late
Monday evening.

* Some locations that will experience flooding include...
Lovers Lane, Frazier Lake, soap/San Felipe Lake, and
lower Pacheco creek north of Hollister.

Precautionary/preparedness actions...

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

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.


Lat... Lon 3711 12127 3683 12127 3692 12152 3701 12150
      3701 12139 3710 12131




401 PM PST Mon Feb 20 2017

... Flood Warning continues for
the Coyote creek near Edenvale
* from late Monday evening until further notice
* at 02pm Monday the stage was 9.2 feet
* minor flooding is forecast
* flood stage is 10.0 feet
* forecast to rise above flood stage by 9 PM Monday evening and
continue to rise to near 11.6 feet by early Tuesday afternoon.
Additional rises are possible thereafter.
* At 12.0 feet... moderate flooding possible along portions of Coyote
creek south of I-880.
* At 10.0 feet... minor localized flooding likely.


Lat... Lon 3745 12193 3739 12184 3723 12171 3722 12176
      3729 12186 3744 12196


Precautionary/preparedness actions...

All those affected by river conditions should remain alert for rapid
changes and for possible forecast revisions.

The next statement will be issued by 9 PM PST Monday or


323 PM PST Mon Feb 20 2017

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

* Flood Warning for...
central Santa Clara County in northern California...

* until 915 PM PST

* at 315 PM PST, the river gage on the Coyote creek above Coyote
Lake indicated flooding along the upper Coyote creek. Rainfall had
subsided over the creek basin by mid afternoon. However, another
area of heavy rain will soon spread over the area. Periods of
heavy rain will continue for the remainder of the afternoon,
likely resulting in continued flooding along the creek into Monday
evening.

* Flooding will remain over mainly rural areas of central Santa Clara
County.

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 3722 12149 3706 12144 3706 12153 3709 12151
      3712 12150 3720 12154




Areal Flood Watch
Issued: 5:12 AM PST Feb. 20, 2017 – National Weather Service

... 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
Antonio.

* 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
afternoon...
... 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
tonight.

* 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
Issued: 2:24 PM PST Feb. 20, 2017 – National Weather Service

... Gale Warning now in effect until 2 am PST Tuesday...

* winds: southerly winds 25 to 35 kt... late afternoon and
evening storm force gusts to 50 kt.

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.