Alert archive / California / Flash Flood Warnings in 2017
Flash Flood Warning 43, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this flash flood warning at Feb 7, 2017, 10:22 AM PST for San Benito County, Santa Clara County, California. It was in force for 12 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
- Feb 7, 2017, 10:22 AM PST (18:22 UTC)
- Expired
- Feb 7, 2017, 10:37 PM PST
- In force
- 12 hr
- Issued by
- NWS San Francisco Bay Area, CA
- Area
- Storm-based polygon
- Flood severity
- None
Counties San Benito County, CA, Santa Clara County, CA
The radar
The San Francisco radar (KMUX), 49 km from the middle of the area, began a volume at 18:25 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, 6.4 hours before the alert went out and 112 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
- 66 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 653 m above ground
- 0-6 km bulk shear
- 77 kt
- 0-1 km storm-relative helicity
- 518 m²/s²
- 0-3 km storm-relative helicity
- 725 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
102
WGUS56 KMTR 071822
FFWMTR
CAC069-085-080200-
/O.NEW.KMTR.FF.W.0043.170207T1822Z-170208T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Francisco CA
1022 AM PST TUE FEB 7 2017
The National Weather Service in The San Francisco Bay Area has issued
a
* Flash Flood Warning for...
Southeastern Santa Clara County in northern California...
Northern San Benito County in central California...
* Until 600 PM PST Tuesday
* At 959 AM PST, stream gage information from Pacheco Creek near
Dunneville show rapidly rising water levels that are approaching
flood stage. Continued rainfall and stream flow forecasts suggest
the creek will continue to rise above flood stage later today.
* Some locations that will experience flooding include...
Soap/San Felipe Lake, Frazier Lake, northern Hollister, and
Lover's Lane.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 3696 12133 3691 12132 3687 12134 3687 12146
3691 12148 3692 12154 3699 12153 3699 12146
3697 12142 3697 12139
$$
MWS3 follow-up statements
543
WGUS56 KMTR 080152
FFWMTR
CAC069-085-080500-
/O.EXT.KMTR.FF.W.0043.000000T0000Z-170208T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Francisco CA
552 PM PST TUE FEB 7 2017
The National Weather Service in The San Francisco Bay Area has
extended the
* Flash Flood Warning for...
Southeastern Santa Clara County in northern California...
Northern San Benito County in central California...
* Until 900 PM PST
* At 542 PM PST, automated gauge data from Pacheco Creek indicates
the water level is gradually receding, however, it remains above
flood stage. The flash flood warning has been extended through
9:00 pm PST.
* Some locations that will continue to experience flooding include...
Soap/San Felipe Lake, Frazier Lake, northern Hollister, and
Lover's Lane.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 3696 12133 3691 12132 3687 12134 3687 12146
3691 12148 3692 12154 3699 12153 3699 12146
3697 12142 3697 12139
$$531
WGUS56 KMTR 080453
FFWMTR
CAC069-085-080700-
/O.EXT.KMTR.FF.W.0043.000000T0000Z-170208T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Francisco CA
853 PM PST TUE FEB 7 2017
The National Weather Service in The San Francisco Bay Area has
extended the
* Flash Flood Warning for...
Southeastern Santa Clara County in northern California...
Northern San Benito County in central California...
* Until 1100 PM PST
* At 847 PM PST, the gauge data from Pacheco Creek indicates the
water level continues to recede, however, it still remains above
flood stage. The flash flood warning therefore has been extended
through 11:00 pm PST late this evening.
* Some locations continuing to experience flooding include...
Soap/San Felipe Lake, Frazier Lake, northern Hollister, and
Lover's Lane.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 3696 12133 3691 12132 3687 12134 3687 12146
3691 12148 3692 12154 3699 12153 3699 12146
3697 12142 3697 12139
$$956
WGUS76 KMTR 080637
FFSMTR
Flash Flood Statement
National Weather Service San Francisco CA
1037 PM PST TUE FEB 7 2017
CAC069-085-080632-
/O.CAN.KMTR.FF.W.0043.000000T0000Z-170208T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Santa Clara CA-San Benito CA-
1037 PM PST TUE FEB 7 2017
...THE FLASH FLOOD WARNING FOR SOUTHEASTERN SANTA CLARA AND NORTHERN
SAN BENITO COUNTIES IS CANCELLED...
AT 10:30 PM PST...RIVER GAUGE DATA FROM THE PACHECO CREEK INDICATES
THE CREEK HAS RECEDED BELOW FLOOD STAGE. IN ADDITION... RAINFALL HAS
ENDED IN THE WARNING AREA. THEREFORE...THE FLASH FLOOD WARNING HAS
BEEN CANCELLED FOR SOUTHEASTERN SANTA CLARA COUNTY AND NORTHERN SAN
BENITO COUNTY. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.
LAT...LON 3696 12133 3691 12132 3687 12134 3687 12146
3691 12148 3692 12154 3699 12153 3699 12146
3697 12142 3697 12139
$$The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 7, 12:21 AM PST | Areal Flood Warning | MTR | Sonoma | 32 hr |
| Feb 7, 1:03 AM PST | Areal Flood Warning | MTR | Sonoma | 11 hr |
| Feb 7, 1:47 AM PST | Areal Flood Warning | MTR | Napa | 6 hr |
| Feb 7, 2:28 AM PST | Areal Flood Advisory | MTR | Alameda, Contra Costa | 2 hr |
| Feb 7, 7:09 AM PST | Flash Flood Warning | MTR | Marin | 4 hr |
| Feb 7, 7:15 AM PST | Flash Flood Warning | MTR | Napa | 6 hr |
| Feb 7, 7:34 AM PST | Flash Flood Warning | MTR | Santa Cruz | 8 hr |
| Feb 7, 9:33 AM PST | Flash Flood Warning | MTR | Alameda | 8 hr |
| Feb 7, 9:55 AM PST | Flash Flood Warning | MTR | Santa Clara | 8 hr |
| Feb 7, 10:26 AM PST | Areal Flood Warning | MTR | San Mateo | 11 hr |
| Feb 7, 10:47 AM PST | Flash Flood Warning | MTR | San Mateo, Santa Clara | 3 hr |
| Feb 7, 11:04 AM PST | River Flood Warning | MTR | Sonoma | 4 days |
| Feb 7, 11:30 AM PST | Flash Flood Warning | MTR | Santa Cruz | 6 hr |
| Feb 7, 11:59 AM PST | Flash Flood Warning | MTR | Monterey | 4 hr |
Nearby
Flash Flood Warnings in California, 2017Every flash flood warning in 2017
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.