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California, East Bay Hills and the Diablo Range

Areal Flood Warning

Statement as of 4:30 AM PST on January 21, 2017

Expires 6:45 PM EST on January 23, 2017


... A Flood Warning for urban areas and small streams remains in
effect until 345 PM PST Monday for southeastern Santa Clara and
northwestern San Benito counties...

At 426 am PST, a combination of excessive rainfall over the past few
weeks, in addition to continued rainfall over recent days, has led
to elevated river/creek levels and damaged levees along the Pacheco
creek. Flooding is actively occurring along the Pacheco creek near
Lovers Lane and San Felipe Road north of Hollister. Flooding may
also be possible or occurring on soap/San Felipe Lake, Frazier
Lake and other smaller tributaries in the impacted area.

Additional rainfall anticipated late tonight into Sunday morning
will likely result in additional rises on the Pacheco creek and
exacerbate flooding in the warned area.

Precautionary/preparedness actions...

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

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.

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


Lat... Lon 3696 12136 3694 12136 3690 12138 3689 12147
      3691 12153 3694 12155 3698 12152 3700 12145
      3697 12141 3697 12137


Rgass


Areal Flood Advisory, Flash Flood Watch

Statement as of 4:45 AM PST on January 21, 2017

Expires 9:00 PM EST on January 22, 2017


... The Flood Advisory for a dam floodgate release remains in effect
until 345 PM PST Sunday for southeastern Santa Clara and northwestern
San Benito counties...

* local water district and County emergency management personnel
have indicated that limited portions of the spillway structure for
Pacheco Lake have been compromised from prior storm activity and
spillway releases this winter. Specifically, there is concern that
renewed spillway releases anticipated in response to forecast
rainfall through the remainder of this weekend could cause
additional erosion of the spillway structure, which could lead to
excessive sediment and/or runoff to enter Pacheco creek
downstream. Excessive runoff and sediment could cause or increase
flooding downstream.

* NWS Monterey is forecasting an additional 1-2" of rainfall this
weekend in the Pacheco creek watershed that feeds the Reservoir.
Development of Post-frontal convective thunderstorms over the
watershed could increase local precipitation totals over the
weekend. Rainfall this weekend will likely be accompanied by
increased releases over the spillway, but it is currently not
expected that additional releases would pose additional risk to
the spillway or downstream areas.

* Engineers from the local water district as well as California
division of safety of dams and California department of water
resources engineers are on-site conducting inspections and
assessing the level of risk posed by current and expected
conditions. County emergency managers are aware of the situation
and are taking appropriate action and following necessary
protocols.

* There is no expectation at this time that a dam breach or failure
would occur. The dam itself is not compromised; it is only the
spillway structure that is under investigation.

* Should the situation worsen and elevate the threat to human life
and property, either prior to or during storm activity this
weekend, a Flash Flood Warning will be issued for affected areas.
Stay tuned to your wireless emergency alerts via cellular phone,
emergency alert system interruptions on local radio and television
stations, NOAA Weather Radio, twitter (@nwsbayarea), facebook
(nwsbayarea), and other local news and notification services
should a Flash Flood Warning be necessary.

Precautionary/preparedness actions...

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

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


Lat... Lon 3710 12127 3704 12127 3697 12133 3687 12136
      3687 12145 3689 12150 3690 12157 3696 12154
      3699 12149 3699 12144 3697 12141 3709 12131


Rgass



346 am PST Sat Jan 21 2017

... 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.




High Wind Warning

Statement as of 4:12 AM PST on January 21, 2017

Expires 1:00 PM EST on January 22, 2017


... High Wind Warning in effect from 10 PM this evening to 10 am
PST Sunday...

The National Weather Service in San Francisco has issued a High
Wind Warning... which is in effect from 10 PM this evening to
10 am PST Sunday. The high wind watch is no longer in effect.

* Timing... late tonight into Sunday morning.

* Winds... sustained southerly winds 35 to 50 mph with gusts
greater than 60 mph... strongest near the coast and in higher
elevations.

* Impacts... gusty winds will make driving difficult... especially
for drivers of high profile vehicles. Since the soils are
saturated... there is a heightened potential for 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

Statement as of 8:32 AM PST on January 21, 2017

Expires 1:00 PM EST on January 22, 2017


... Small Craft Advisory remains in effect until 10 am PST this
morning...
... Gale Warning remains in effect from 10 PM this evening to
10 am PST Sunday...

A Gale Warning remains in effect from 10 PM this evening to 10 am
PST Sunday. A Small Craft Advisory remains in effect until 10 am
PST this morning.

* 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 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.






Weather Severe Map
Alabama - Flood Warning , Coastal Hazard Statement , Record Report
Alaska - High Wind Watch , Winter Storm Watch , Blizzard Watch , Winter Storm Warning , Blizzard Warning , Wind Chill Advisory , Wind Chill Warning
Arizona - Areal Flood Warning , Areal Flood Advisory , Areal Flood Watch , Wind Advisory , Winter Weather Advisory , Winter Storm Warning , Record Report , Public Information Statement
Arkansas - Flood Warning , Public Information Statement
California - Areal Flood Warning , Flood Warning , Flash Flood Watch , Flash Flood Watch, High Surf Warning, Coastal Flood Advisory , Flash Flood Watch, Coastal Flood Advisory, High Surf Advisory , High Surf Warning , Flood Watch , High Surf Warning, Coastal Flood Advisory , Areal Flood Advisory, Flash Flood Watch , Flash Flood Watch, High Surf Warning , High Wind Warning , Wind Advisory , High Wind Warning, Wind Advisory , Wind Advisory, High Wind Warning , Winter Storm Warning , Winter Storm Warning, Winter Weather Advisory , Winter Weather Advisory , Winter Weather Advisory, Winter Storm Watch , Hydrologic Statement , Record Report , Public Information Statement
Colorado - Winter Weather Advisory , Winter Storm Warning
Connecticut - High Wind Watch
Florida - Tornado Watch , Flood Warning , Coastal Hazard Statement , High Surf Advisory, Coastal Hazard Statement , Coastal Hazard Statement, Beach Hazard Statement , Record Report
Georgia - Tornado Warning , Tornado Watch , Severe Thunderstorm Warning , Flood Warning , Special Statement , Record Report
Hawaii - High Surf Advisory , High Wind Warning
Idaho - Areal Flood Advisory , Winter Storm Watch , Air Quality Alert
Illinois - Flood Warning , Areal Flood Warning , Flood Advisory
Indiana - Flood Warning , Flood Advisory , Dense Fog Advisory , Record Report
Iowa - Flood Warning , Dense Fog Advisory , Record Report
Kansas - Record Report , Public Information Statement
Kentucky - Flood Warning , Record Report
Louisiana - Flood Warning , Public Information Statement
Massachusetts - High Wind Watch
Michigan - Flood Advisory , Dense Fog Advisory , Special Statement , Record Report
Minnesota - Winter Weather Advisory , Dense Fog Advisory
Mississippi - Flood Warning , Record Report , Public Information Statement
Nebraska - Flood Warning , Record Report
Nevada - Areal Flood Watch , Wind Advisory , Winter Storm Warning , Winter Weather Advisory , Winter Storm Watch , Record Report
New Jersey - High Wind Watch
New Mexico - Wind Advisory , High Wind Warning , Winter Weather Advisory , Winter Storm Warning , Public Information Statement
New York - High Wind Watch , Public Information Statement
North Carolina - Record Report
Ohio - Flood Warning , Dense Fog Advisory , Record Report
Oregon - High Surf Warning , High Surf Advisory , Wind Advisory , High Wind Warning , Winter Weather Advisory , Public Information Statement
Rhode Island - High Wind Watch
South Carolina - Tornado Watch , Record Report
Tennessee - Record Report
Texas - Flood Warning , Wind Advisory , High Wind Warning , Fire Weather Watch , Record Report , Public Information Statement
Utah - Winter Weather Advisory , Winter Storm Warning , Winter Storm Warning, Winter Weather Advisory , Public Information Statement
Virginia - Record Report
Washington - High Surf Advisory , Winter Weather Advisory , Public Information Statement
West Virginia - Record Report
Wisconsin - Flood Warning , Dense Fog Advisory
Wyoming - Winter Storm Watch , Public Information Statement
- Tornado Watch
- Marine Fog Advisory

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