Alert archive / California / Flash Flood Warnings in 2016
Flash Flood Warning 8, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this flash flood warning at Mar 10, 2016, 12:02 PM PST for Sonoma County, California. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Mar 10, 2016, 12:02 PM PST (20:02 UTC)
- Expired
- Mar 10, 2016, 4:00 PM PST
- In force
- 4 hr
- Issued by
- NWS San Francisco Bay Area, CA
- Area
- Storm-based polygon
- Flood severity
- None
County Sonoma County, CA
The radar
The Sacramento radar (KDAX), 89 km from the middle of the area, began a volume at 20:05 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.
The nearest sounding before it
Oakland, CA (KOAK), launched 12:00Z, 8.0 hours before the alert went out and 73 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1281 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 312 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
620 WGUS56 KMTR 102002 FFWMTR CAC097-110000- /O.NEW.KMTR.FF.W.0008.160310T2002Z-160311T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SAN FRANCISCO CA 1202 PM PST THU MAR 10 2016 THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHEASTERN SONOMA COUNTY IN NORTHERN CALIFORNIA... * UNTIL 400 PM PST * AT 1200 PM PST...GAUGE REPORTS INDICATED HEAVY RAIN FALLING ACROSS THE WARNED AREA. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY. THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES... WILLOW BROOK AND LICHAU CREEK. FLOOD WATERS ARE MOVING DOWN WILLOW BROOK CREEK FROM PENNGROVE PARK TO OLD REDWOOD HIGHWAY BRIDGE AND STONY POINT ROAD. PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU CAN DO SO SAFELY. && LAT...LON 3829 12264 3826 12267 3827 12269 3830 12266 $$ DRP
1 follow-up statement
807 WGUS76 KMTR 102305 FFSMTR FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN FRANCISCO CA 305 PM PST THU MAR 10 2016 CAC097-110000- /O.CON.KMTR.FF.W.0008.000000T0000Z-160311T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SONOMA CA- 305 PM PST THU MAR 10 2016 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 PM PST FOR SOUTHEASTERN SONOMA COUNTY... AT 302 PM PST...GAUGE REPORTS INDICATED HEAVY RAIN WAS FALLING OVER THE WARNED AREA. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY. THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...PETALUMA RIVER... WILLOW BROOK AND LICHAU CREEK. PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU CAN DO SO SAFELY. && LAT...LON 3829 12264 3826 12267 3827 12269 3830 12266 $$ BFG
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 10, 2:41 AM PST | Small Craft Advisory | MTR | 24 hr | |
| Mar 10, 8:35 AM PST | Areal Flood Advisory | MTR | Marin, Napa, Sonoma | 3 hr |
| Mar 10, 10:05 AM PST | Areal Flood Advisory | MTR | Marin, Napa, Sonoma | 115 min |
| Mar 10, 11:43 AM PST | Areal Flood Advisory | MTR | Marin, Napa, Sonoma | 3 hr |
| Mar 10, 3:48 PM PST | River Flood Warning | MTR | Napa, Sonoma | 281 days |
| Mar 10, 3:57 PM PST | Flash Flood Warning | MTR | Sonoma | 4 hr |
Nearby
Flash Flood Warnings in California, 2016Every flash flood warning in 2016
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.