Alert archive / California / Flash Flood Watches in 2019
Flash Flood Watch 8, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this flash flood watch at Dec 7, 2019, 4:56 AM PST for Marin County, Napa County, Sonoma County, California. It took effect at Dec 7, 2019, 10:00 AM PST. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Dec 7, 2019, 4:56 AM PST (12:56 UTC)
- In effect from
- Dec 7, 2019, 10:00 AM PST
- Expired
- Dec 7, 2019, 10:00 PM PST
- In force
- 12 hr
- Issued by
- NWS San Francisco Bay Area, CA
- Flood severity
- None
Counties Marin County, CA, Napa County, CA, Sonoma County, CA
The radar
The Sacramento radar (KDAX), 88 km from the middle of the area, began a volume at 12:58 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What forecasters said that day
The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS San Francisco Bay Area, CA wrote its last area forecast discussion before this flash flood watch went out at Dec 6, 1:30 PM PST, 15 hours 26 minutes earlier.
Area forecast discussion, Dec 6, 1:30 PM PST, 15 hours 26 minutes before
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</html>The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 7, 2:40 AM PST | Small Craft Advisory | MTR | 18 hr | |
| Dec 7, 12:54 PM PST | Special Weather Statement | MTR | Sonoma | 6 min |
| Dec 7, 1:31 PM PST | Special Marine Warning | MTR | 29 min | |
| Dec 7, 1:53 PM PST | Special Weather Statement | MTR | Sonoma | 22 min |
| Dec 7, 2:00 PM PST | Special Marine Warning | MTR | 30 min | |
| Dec 7, 2:22 PM PST | Special Weather Statement | MTR | Sonoma | 38 min |
| Dec 7, 2:29 PM PST | Special Marine Warning | MTR | 31 min | |
| Dec 7, 2:34 PM PST | Special Weather Statement | MTR | San Mateo | 26 min |
| Dec 7, 2:58 PM PST | Special Weather Statement | MTR | San Mateo | 32 min |
| Dec 7, 2:59 PM PST | Areal Flood Advisory | MTR | Alameda, Contra Costa, City and County of San Francisco, San Mateo | 61 min |
| Dec 7, 3:21 PM PST | Areal Flood Warning | MTR | City and County of San Francisco | 84 min |
Nearby
Flash Flood Watches in California, 2019Every flash flood watch in 2019
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.