Weather Alerts for Napa

Issued by the National Weather Service

       Flood Advisory      

Flood Advisory  FLOOD ADVISORY   Flood Advisory
NAPA

Areas Affected:
Napa, CA - Sonoma, CA
Effective: Wed, 11/20 6:10pm Updated: Wed, 11/20 10:20pm Urgency: Expected
Expires: Thu, 11/21 12:15am Severity: Minor Certainty: Likely

 
Details:
* WHAT...Urban area and small stream flooding caused by excessive
rainfall is expected.

* WHERE...Areas near Calistoga, St. Helena, Yountville, Lake
Berryessa, and the city of Sonoma in northeastern Sonoma and
northern and central Napa counties.

* WHEN...Until 1215 AM PST Thursday.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Rises in small streams and normally dry arroyos. Overflowing poor
drainage areas.

* ADDITIONAL DETAILS...
- At 610 PM PST, Doppler radar and automated gauges indicated
heavy rain. This will cause urban and small stream flooding.
Between 3 and 4.5 inches of rain have fallen.
- Some locations that will experience flooding include...
Napa, Sonoma, St. Helena, Calistoga, Boyes Hot Springs,
Yountville, Angwin, Deer Park, Glen Ellen, Eldridge, Fetters
Hot Spring, Fetters Hot Springs-Agua Caliente, El Verano and
Temelec.
- http://www.weather.gov/safety/flood

Information:
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.

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.

Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.

Wind Advisory  WIND ADVISORY   Wind Advisory
NAPA

Areas Affected:
San Francisco - Marin Coastal Range - Sonoma Coastal Range - North Bay Interior Mountains - Coastal North Bay Including Point Reyes National Seashore - North Bay Interior Valleys - San Francisco Bay Shoreline - San Francisco Peninsula Coast
Effective: Wed, 11/20 2:02pm Updated: Wed, 11/20 10:20pm Urgency: Expected
Expires: Thu, 11/21 6:00am Severity:  Moderate  Certainty: Likely

 
Details:
* WHAT...South winds 20 to 30 mph with gusts up to 50 mph.

* WHERE...San Francisco, Marin Coastal Range, Sonoma Coastal
Range, North Bay Interior Mountains, North Bay Interior Valleys,
San Francisco Bay Shoreline, San Francisco Peninsula Coast

* WHEN...Until 6 AM PST Thursday.

* IMPACTS...Gusty winds could blow around unsecured objects.
Tree limbs could be blown down and a few power outages may
result.

Information:
Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

Flood Watch  FLOOD WATCH   Flood Watch
NAPA

Areas Affected:
Marin Coastal Range - Sonoma Coastal Range - North Bay Interior Mountains - Coastal North Bay Including Point Reyes National Seashore - North Bay Interior Valleys
Effective: Wed, 11/20 2:34pm Updated: Wed, 11/20 10:20pm Urgency: Future
Expires: Thu, 11/21 6:00am Severity:  Severe  Certainty: Possible

 
Details:
* WHAT...Flooding caused by excessive rainfall continues to be
possible.

* WHERE...The North Bay.

* WHEN...Through late Friday night.

* IMPACTS...Creeks and streams may rise out of their banks. Flooding
may occur in poor drainage and urban areas. Low-water crossings
may be flooded.

* ADDITIONAL DETAILS...
- Light to moderate rain is continuing across the watch area.
Two to four inches of rain have already fallen in the valley
regions with up to six inches of rain in the higher
elevations. Areas of the Sonoma County valleys have already
reported minor flooding and road closures.
- http://www.weather.gov/safety/flood

Information:
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.