Headline:
Flood Advisory issued November 20 at 9:21PM PST until November 21 at 3:15AM PST by NWS San Francisco CA
Event:
Flood Advisory
Urgency:
Expected
Effective:
November 20, 2024 - 9:21pm
Expires:
November 21, 2024 - 3:15am
Description:
* WHAT...Urban area and small stream flooding caused by excessive
rainfall is ongoing.
* WHERE...Northern and central Sonoma County, including the Sonoma
coastal ranges, the 101 corridor including the city of Santa Rosa,
and the Mayacamas.
* WHEN...Until 315 AM PST.
* 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 919 PM PST, Doppler radar and automated rain gauges
indicated heavy rain. This is causing urban and small stream
flooding. Between 3 and 6 inches of rain have fallen.
- Colgan Creek, Santa Rosa Creek, and Laguna de Santa Rosa are
experiencing minor flooding, and the risk for minor flooding
remains along Green Valley Creek. Roads have been closed due
to flooding. Additional rainfall amounts of 1 to 2 inches are
expected over the area. This additional rain will result in
minor flooding.
- Some locations that will experience flooding include...
Santa Rosa, Rohnert Park, Windsor, Healdsburg, Cloverdale,
Sebastopol, Cotati, Larkfield-Wikiup, Roseland, South Santa
Rosa Cdp, Forestville, Guerneville, Monte Rio, Graton,
Occidental and South Santa Rosa.
- http://www.weather.gov/safety/flood
Instruction:
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.
Area Description:
Sonoma, CA
Forcast Office:
NWS San Francisco CA