Saint Helena, CA

4:18 AM PST on January 22, 2017 (GMT -0800)
Pratt Avenue | | Change Station

Elev 253 ft 38.51 °N, 122.48 °W | Updated 2 minutes ago

Rain
Rain
46.6 °F
Feels Like 47 °F
N
0.0
Wind Variable Wind from South
Gusts 4.0 mph

Today
High -- | Low -- °F
--% Chance of Precip.
Yesterday
High -- | Low -- °F
Precip. -- in
Pressure 29.61 in
Visibility 8.0 miles
Clouds Few 1900 ft
Scattered Clouds 2700 ft
Overcast 3600 ft
Windchill 47 °F
Dew Point 45 °F
Humidity 93%
Rainfall 1.21 in
Snow Depth Not available.
7:22 AM 5:21 PM
Waning Crescent, 27% visible
SPECI KSTS 221209Z 18005KT 8SM -RA FEW019 SCT027 OVC036 09/08 A2961 RMK AO2 P0000 T00940083
Pressure 29.61 in
Visibility 8.0 miles
Clouds Few 1900 ft
Scattered Clouds 2700 ft
Overcast 3600 ft
Windchill 47 °F
Dew Point 45 °F
Humidity 93%
Rainfall 1.21 in
Snow Depth Not available.
7:22 AM 5:21 PM
Waning Crescent, 27% visible
SPECI KSTS 221209Z 18005KT 8SM -RA FEW019 SCT027 OVC036 09/08 A2961 RMK AO2 P0000 T00940083

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Watches & Warnings

Areal Flood Warning
Issued: 1:47 AM PST Jan. 22, 2017 – National Weather Service

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

* Flood Warning for small streams in...
southeastern Sonoma County in northern California...

* until 745 am PST Sunday

* at 143 am PST, Doppler radar and automated rain gauges indicated
that moderate to heavy rain continues to fall over much of Sonoma
County. Additional rainfall through the early morning will result
in rises on area creeks and streams that will exacerbate ongoing
flooding. These areas include mark West Creek, Colgan creek and
areas in the lower Laguna de Santa Rosa.

* Some locations that will experience flooding include...
Petaluma, Rohnert Park, Sebastopol, Cotati, Forestville, Graton
and the mark west area.

Precautionary/preparedness actions...

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

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.

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.


Lat... Lon 3857 12288 3839 12273 3826 12256 3821 12255
      3818 12261 3825 12272 3842 12287 3856 12298
      3860 12293


Rgass


Flash Flood Watch
Issued: 3:50 AM PST Jan. 22, 2017 – National Weather Service

... Flash Flood Watch remains in effect through this 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.

* Through this afternoon.

* Periods of heavy rain on already saturated soils will impact the
region through this afternoon.

* 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.




Wind Advisory
Issued: 3:55 AM PST Jan. 22, 2017 – National Weather Service

... Wind Advisory remains in effect until 10 am PST this morning...

* timing... through this morning.

* Winds... sustained southerly winds 20 to 35 mph with local
gusts greater than 45 mph.

* 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 Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult... especially for high
profile vehicles. Use extra caution.





Gale Warning, Small Craft Advisory
Issued: 4:03 AM PST Jan. 22, 2017 – National Weather Service

... Gale Warning remains in effect until 10 am PST this morning...
... Small Craft Advisory remains in effect from 10 am this morning
to 3 PM PST this afternoon...

* winds: south winds 25 to 35 kt this morning.

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.