Alert archive / California / Flash Flood Warnings in 2017
Flash Flood Warning 36, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this flash flood warning at Jan 22, 2017, 12:35 PM PST for San Benito County, Santa Clara County, California. It was in force for 6 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 22, 2017, 12:35 PM PST (20:35 UTC)
- Expired
- Jan 22, 2017, 6:30 PM PST
- In force
- 6 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), 46 km from the middle of the area, began a volume at 20:34 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, 8.6 hours before the alert went out and 109 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
- 760 m above ground
- 0-6 km bulk shear
- 101 kt
- 0-1 km storm-relative helicity
- 706 m²/s²
- 0-3 km storm-relative helicity
- 1006 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
081
WGUS56 KMTR 222035
FFWMTR
CAC069-085-230230-
/O.NEW.KMTR.FF.W.0036.170122T2035Z-170123T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Francisco CA
1235 PM PST SUN JAN 22 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...
Northwestern San Benito County in central California...
* Until 630 PM PST
* At 1233 PM PST, gauge reports indicated heavy rain falling across
the warned area. Pacheco Creek near Dunneville has surpassed the
12 foot flood stage level and is continuing to rise rapidly. Flash
flooding is already occurring.
* Some locations that will experience flooding include...
northern Hollister, Soap/San Felipe Lake, Frazier Lake area,
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 3697 12141 3697 12137 3696 12136 3694 12136
3690 12138 3689 12147 3691 12153 3694 12155
3696 12154 3698 12152 3700 12145
$$
MWS2 follow-up statements
581
WGUS76 KMTR 222159
FFSMTR
Flash Flood Statement
National Weather Service San Francisco CA
159 PM PST SUN JAN 22 2017
CAC069-085-230230-
/O.CON.KMTR.FF.W.0036.000000T0000Z-170123T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Santa Clara CA-San Benito CA-
159 PM PST SUN JAN 22 2017
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM PST FOR
SOUTHEASTERN SANTA CLARA AND NORTHWESTERN SAN BENITO COUNTIES...
At 155 PM PST, Pacheco Creek near Dunneville has risen to nearly 13
and a half feet and could surpass 14 feet. Flash flooding is
already occurring.
Some locations that will experience flooding include...northern
Hollister, Soap/San Felipe Lake, Frazier Lake area, Lover's Lane.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 3697 12141 3697 12137 3696 12136 3694 12136
3690 12138 3689 12147 3691 12153 3694 12155
3696 12154 3698 12152 3700 12145
$$537
WGUS76 KMTR 222350
FFSMTR
Flash Flood Statement
National Weather Service San Francisco CA
350 PM PST SUN JAN 22 2017
CAC069-085-222359-
/O.CAN.KMTR.FF.W.0036.000000T0000Z-170123T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Santa Clara CA-San Benito CA-
350 PM PST SUN JAN 22 2017
...THE FLASH FLOOD WARNING FOR SOUTHEASTERN SANTA CLARA AND
NORTHWESTERN SAN BENITO COUNTIES IS CANCELLED...
Flood waters have receded at Pacheco Creek near Dunneville and will
soon be below the flood stage of 12 feet. Please continue to heed
any remaining road closures.
LAT...LON 3697 12141 3697 12137 3696 12136 3694 12136
3690 12138 3689 12147 3691 12153 3694 12155
3696 12154 3698 12152 3700 12145
$$The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 22, 12:45 AM PST | Areal Flood Warning | MTR | Monterey | 6 hr |
| Jan 22, 1:47 AM PST | Areal Flood Warning | MTR | Sonoma | 6 hr |
| Jan 22, 2:47 AM PST | High Surf Advisory | MTR | Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma | 48 hr |
| Jan 22, 4:30 AM PST | Areal Flood Advisory | MTR | San Mateo | 60 min |
| Jan 22, 5:11 AM PST | Flash Flood Warning | MTR | Napa, Sonoma | 4 hr |
| Jan 22, 5:47 AM PST | Areal Flood Advisory | MTR | Alameda, Santa Clara, Santa Cruz | 118 min |
| Jan 22, 6:28 AM PST | Flash Flood Warning | MTR | Santa Cruz | 4 hr |
| Jan 22, 7:32 AM PST | Areal Flood Warning | MTR | Sonoma | 24 hr |
| Jan 22, 8:08 AM PST | Flash Flood Warning | MTR | Monterey | 3 hr |
| Jan 22, 8:12 AM PST | Flash Flood Warning | MTR | Santa Clara | 3 hr |
| Jan 22, 8:35 AM PST | Flash Flood Warning | MTR | Santa Cruz | 3 hr |
| Jan 22, 11:34 AM PST | Areal Flood Warning | MTR | Santa Cruz | 24 hr |
| Jan 22, 12:27 PM PST | Areal Flood Advisory | MTR | San Mateo, Santa Clara, Santa Cruz | 6 hr |
| Jan 22, 1:17 PM PST | Special Marine Warning | MTR | 28 min | |
| Jan 22, 2:29 PM PST | Special Weather Statement | MTR | San Mateo | 16 min |
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.