Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 141, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 21, 2012, 3:16 PM MST for Mohave County, Arizona. It was in force for 119 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 21, 2012, 3:16 PM MST (22:16 UTC)
- Expired
- Aug 21, 2012, 5:15 PM MST
- In force
- 119 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Mohave County, AZ
The radar
The Las Vegas radar (KESX), 138 km from the middle of the area, began a volume at 22:18 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 21, 4:15 PM MST | FLASH FLOOD | 5 Nnw Peach Springs, AZ | THE HUALAPAI LODGE REPORTED THAT DIAMOND CREEK ROAD WAS COMPLETELY WASHED OUT DUE TO FLASH FLOODING FROM THE PEACH SPRINGS TURNOFF ALL THE WAY TO THE COLORADO RIVER. THE ROAD HAS BEEN CLOSED. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 10.3 hours before the alert went out and 154 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
- 465 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 1171 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 1 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
019
WGUS55 KVEF 212216
FFWVEF
AZC015-220015-
/O.NEW.KVEF.FF.W.0141.120821T2216Z-120822T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
316 PM MST TUE AUG 21 2012
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CENTRAL MOHAVE COUNTY IN NORTHWEST ARIZONA...
* UNTIL 515 PM MST.
* AT 309 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM A CLUSTER OF THUNDERSTORMS NORTH OF STATE ROUTE
66 IN EASTERN MOHAVE COUNTY NEAR DIAMOND CREEK CAMPGROUND. THE
THUNDERSTORM PRODUCING VERY HEAVY RAIN WAS NEARLY STATIONARY.
* LOCATIONS IMPACTED INCLUDE...DIAMOND CREEK ROAD AND DIAMOND CREEK
CAMPGROUND.
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 3584 11332 3581 11331 3553 11333 3551 11349
3587 11351 3589 11331 3584 11331
$$
KENNEDY2 follow-up statements
350
WGUS75 KVEF 212321
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
421 PM MST TUE AUG 21 2012
AZC015-220015-
/O.CON.KVEF.FF.W.0141.000000T0000Z-120822T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
421 PM MST TUE AUG 21 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM MST FOR
CENTRAL MOHAVE COUNTY...
AT 414 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE STRONG THUNDERSTORMS PRODUCING VERY HEAVY ALONG DIAMOND
CREEK ROAD NEAR DIAMOND CREEK CAMPGROUND AND PEACH SPRINGS. LOCAL
LAW ENFORCEMENT HAVE NOT YET RECEIVED ANY REPORTS OF FLASH
FLOODING...BUT DID REPORT LONG PERIODS OF HEAVY RAIN IN THE AREA.
LOCATIONS IMPACTED INCLUDE...DIAMOND CREEK CAMPGROUND...DIAMOND
CREEK ROAD...PEACH SPRINGS...AND ROUTE 66 NEAR PEACH SPRINGS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE
RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED
ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!
REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG...
NWSVEGAS.
&&
LAT...LON 3584 11332 3581 11331 3553 11333 3551 11349
3587 11351 3589 11331 3584 11331
$$
KENNEDY825
WGUS75 KVEF 220017
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
517 PM MST TUE AUG 21 2012
AZC015-220021-
/O.EXP.KVEF.FF.W.0141.000000T0000Z-120822T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
517 PM MST TUE AUG 21 2012
...THE FLASH FLOOD WARNING WILL EXPIRE AT 515 PM MST FOR CENTRAL
MOHAVE COUNTY...
THE THUNDERSTORMS WHICH PRODUCED THE HEAVY RAIN NORTH OF ROUTE 66
OVER DIAMOND CREEK ROAD AND DIAMOND CREEK HAVE DISSIPATED AND THE
WARNING WILL BE ALLOWED TO EXPIRE. THE HUALAPAI LODGE ALONG ROUTE 66
HAS REPORTED THAT DIAMOND CREEK ROAD HAS BEEN CLOSED...AS THE ROAD
HAS COMPLETELY BEEN WASHED OUT DUE TO FLASH FLOODING.
LAT...LON 3584 11332 3581 11331 3553 11333 3551 11349
3587 11351 3589 11331 3584 11331
$$
KENNEDYThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 5:51 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 39 min |
| Aug 20, 6:09 PM MST | Flash Flood Warning | VEF | Mohave | 2 hr |
| Aug 20, 7:37 PM MST | Flash Flood Warning | VEF | Mohave | 4 hr |
| Aug 20, 8:01 PM MST | Flash Flood Warning | VEF | Mohave | 119 min |
| Aug 21, 11:39 AM MST | Flash Flood Watch | VEF | Mohave | 36 hr |
| Aug 21, 1:43 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 32 min |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.