Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 132, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 20, 2012, 2:42 PM MST for Mohave County, Arizona. It was in force for 2 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
- Aug 20, 2012, 2:42 PM MST (21:42 UTC)
- Expired
- Aug 20, 2012, 4:45 PM MST
- In force
- 2 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Mohave County, AZ
The radar
The Cedar City radar (KICX), 150 km from the middle of the area, began a volume at 21:43 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
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 9.7 hours before the alert went out and 158 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
- 808 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 974 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
501
WGUS55 KVEF 202142
FFWVEF
AZC015-202345-
/O.NEW.KVEF.FF.W.0132.120820T2142Z-120820T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
242 PM MST MON AUG 20 2012
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EAST CENTRAL MOHAVE COUNTY IN NORTHWEST ARIZONA...
* UNTIL 445 PM MST.
* AT 236 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM A THUNDERSTORM NEAR TOROWEAP CAMPGROUND...OR
51 MILES SOUTH OF COLORADO CITY. THE STORM PRODUCING VERY HEAVY
RAIN WAS NEARLY STATIONARY.
* LOCATIONS IMPACTED INCLUDE...
MAINLY RURAL AREAS OF EASTERN MOHAVE COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE
RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED
ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!
REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG...
NWSVEGAS.
&&
LAT...LON 3623 11296 3622 11297 3623 11302 3618 11309
3618 11320 3635 11318 3636 11294 3623 11294
$$
ASG2 follow-up statements
740
WGUS75 KVEF 202216
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
316 PM MST MON AUG 20 2012
AZC015-202345-
/O.CON.KVEF.FF.W.0132.000000T0000Z-120820T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
316 PM MST MON AUG 20 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 PM MST FOR EAST
CENTRAL MOHAVE COUNTY...
AT 307 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING VERY HEAVY RAIN. THIS STORM WAS
LOCATED NEAR TOROWEAP CAMPGROUND...OR 53 MILES SOUTH OF COLORADO
CITY. DOPPLER RADAR HAS INDICATED BETWEEN 2 AND 3 INCHES OF RAIN HAS
FALLEN WITHIN THE WARNED AREA. THE THUNDERSTORM WITH EXCESSIVE RAIN
WAS NEARLY STATIONARY.
LOCATIONS IMPACTED INCLUDE...
TOROWEAP CAMPGROUND...TUWEEP.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE
RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED
ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!
REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG...
NWSVEGAS.
&&
LAT...LON 3623 11296 3622 11297 3623 11302 3618 11309
3618 11320 3635 11318 3636 11294 3623 11294
$$
ASG672
WGUS75 KVEF 202337
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
437 PM MST MON AUG 20 2012
AZC015-202346-
/O.EXP.KVEF.FF.W.0132.000000T0000Z-120820T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
437 PM MST MON AUG 20 2012
...THE FLASH FLOOD WARNING WILL EXPIRE AT 445 PM MST FOR EAST CENTRAL
MOHAVE COUNTY...
DOPPLER RADAR HAS INDICATED THAT HEAVY RAIN HAS ENDED IN THE TUWEEP
AND TOROWEAP CAMPGROUND AREAS. ADDITIONAL RUNOFF IS LIKELY...BUT THE
THREAT OF ADDITIONAL FLASH FLOODING HAS ENDED.
LAT...LON 3623 11296 3622 11297 3623 11302 3618 11309
3618 11320 3635 11318 3636 11294 3623 11294
$$
ASGThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 2:24 PM MST | Flash Flood Warning | VEF | Mohave | 75 min |
| Aug 20, 2:34 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 41 min |
| Aug 20, 3:20 PM MST | Flash Flood Warning | VEF | Mohave | 98 min |
| Aug 20, 4:14 PM MST | Flash Flood Warning | VEF | Mohave | 2 hr |
Nearby
Flash Flood Warnings in Arizona, 2012Every flash flood warning in 2012
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.