Alert archive / California / Flash Flood Warnings in 2017
Flash Flood Warning 21, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this flash flood warning at Jan 10, 2017, 9:14 PM PST for Monterey County, California. It was in force for 9 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
- Jan 10, 2017, 9:14 PM PST (05:14 UTC)
- Expired
- Jan 11, 2017, 6:15 AM PST
- In force
- 9 hr
- Issued by
- NWS San Francisco Bay Area, CA
- Area
- Storm-based polygon
- Flood severity
- None
County Monterey County, CA
The radar
The San Francisco radar (KMUX), 91 km from the middle of the area, began a volume at 05:18 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 00:00Z, 5.2 hours before the alert went out and 160 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
- 40 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 585 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 245 m²/s²
- 0-3 km storm-relative helicity
- 158 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
551
WGUS56 KMTR 110514
FFWMTR
CAC053-110815-
/O.NEW.KMTR.FF.W.0021.170111T0514Z-170111T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Francisco CA
914 PM PST TUE JAN 10 2017
The National Weather Service in The San Francisco Bay Area has issued
a
* Flash Flood Warning for the Soberanes Burn Area in...
West central Monterey County in central California...
* Until 1215 AM PST
* At 910 PM PST, Doppler radar indicated heavy rain moving across
the Soberanes Fire burn scar. In addition, the Big Sur River near
Big Sur was at 11.3 feet and rising rapidly. Flood stage on the
Big Sur River is 10 feet. The Big Sur River is expected to rise
further before subsiding.
* Additional heavy rain is expected for the next hour across the
burn scar and Big Sur River Basin. This will lead to flash
flooding and possible debris flows.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flash Flood Warning for a burn area means that flash flooding,
debris flows and or rock slides are likely or already occurring. If
you are in or near the warned area, you should seek a safe location
immediately. Your life may depend on how quickly you react.
&&
LAT...LON 3652 12190 3644 12175 3645 12171 3628 12144
3625 12149 3625 12158 3618 12148 3614 12159
3631 12190 3649 12195
$$2 follow-up statements
061
WGUS56 KMTR 110810
FFWMTR
CAC053-111415-
/O.EXT.KMTR.FF.W.0021.000000T0000Z-170111T1415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Francisco CA
1210 AM PST WED JAN 11 2017
The National Weather Service in The San Francisco Bay Area has
extended the
* Flash Flood Warning for...
West central Monterey County in central California...
* Until 615 AM PST Wednesday
* At 1205 AM PST, Doppler radar indicated another area of rain
approaching the warned area. Flash flooding is already occurring.
* At 12 AM PST, Doppler radar indicated another batch of rain
approaching the Big Sur coast. In addition, the Big Sur River near
Big Sur was at 12.3 feet and rising rapidly. Flood stage on the
Big Sur River is 10 feet. The Big Sur River is expected to rise
further before subsiding.
* Additional rain showers are expected for the next hour across the
burn scar and Big Sur River Basin. This will lead to flash
flooding and possible debris flows.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
A Flash Flood Warning for a burn area means that flash flooding,
debris flows and or rock slides are likely or already occurring. If
you are in or near the warned area, you should seek a safe location
immediately. Your life may depend on how quickly you react.
&&
LAT...LON 3652 12190 3644 12175 3645 12171 3628 12144
3625 12149 3625 12158 3618 12148 3614 12159
3631 12190 3649 12195
$$357
WGUS76 KMTR 111412
FFSMTR
Flash Flood Statement
National Weather Service San Francisco CA
612 AM PST WED JAN 11 2017
CAC053-111421-
/O.EXP.KMTR.FF.W.0021.000000T0000Z-170111T1415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Monterey CA-
612 AM PST WED JAN 11 2017
...THE FLASH FLOOD WARNING FOR WEST CENTRAL MONTEREY COUNTY WILL
EXPIRE AT 615 AM PST...
The heavy rain has ended however scattered showers will continue
today. Flood waters are receding. Please continue to heed any
remaining road closures.
LAT...LON 3652 12190 3644 12175 3645 12171 3628 12144
3625 12149 3625 12158 3618 12148 3614 12159
3631 12190 3649 12195
$$
rwwThe office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 10, 4:26 PM PST | Areal Flood Warning | MTR | Sonoma | 24 hr |
| Jan 10, 5:46 PM PST | Areal Flood Advisory | MTR | City and County of San Francisco, San Mateo | 4 hr |
| Jan 10, 6:18 PM PST | Areal Flood Warning | MTR | Sonoma | 12 hr |
| Jan 10, 6:41 PM PST | Areal Flood Warning | MTR | Santa Clara | 15 hr |
| Jan 10, 7:26 PM PST | Flash Flood Warning | MTR | Santa Cruz | 3 hr |
| Jan 10, 7:59 PM PST | Areal Flood Warning | MTR | Napa | 12 hr |
| Jan 10, 8:01 PM PST | Flash Flood Warning | MTR | Alameda | 10 hr |
| Jan 10, 8:28 PM PST | Areal Flood Warning | MTR | Marin | 12 hr |
| Jan 10, 8:43 PM PST | Special Weather Statement | MTR | Santa Cruz | 47 min |
| Jan 10, 8:45 PM PST | Special Marine Warning | MTR | 30 min | |
| Jan 10, 9:03 PM PST | Gale Warning | MTR | 5 hr | |
| Jan 10, 9:03 PM PST | Small Craft Advisory for Rough Bar | MTR | 36 hr | |
| Jan 10, 9:03 PM PST | Small Craft Advisory | MTR | 5 hr | |
| Jan 10, 9:20 PM PST | Special Marine Warning | MTR | 40 min | |
| Jan 10, 10:07 PM PST | Areal Flood Advisory | MTR | Santa Clara | 5 hr |
| Jan 10, 10:53 PM PST | Flash Flood Warning | MTR | Santa Cruz | 6 hr |
| Jan 10, 11:07 PM PST | Areal Flood Advisory | MTR | City and County of San Francisco, San Mateo | 113 min |
| Jan 10, 11:43 PM PST | Special Marine Warning | MTR | 32 min | |
| Jan 10, 11:50 PM PST | Areal Flood Advisory | MTR | Alameda, Contra Costa | 115 min |
| Jan 11, 12:27 AM PST | Areal Flood Advisory | MTR | San Mateo | 4 hr |
| Jan 11, 12:45 AM PST | River Flood Warning | MTR | Monterey | 15 hr |
| Jan 11, 6:03 AM PST | Flash Flood Warning | MTR | Monterey | 3 hr |
| Jan 11, 7:43 AM PST | Areal Flood Warning | MTR | San Benito, Santa Clara | 12 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.