Alert archive / Arizona / Flash Flood Warnings in 2016
Flash Flood Warning 96, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 20, 2016, 4:09 PM MST for Mohave County, Arizona. It was in force for 3 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, 2016, 4:09 PM MST (23:09 UTC)
- Expired
- Aug 20, 2016, 7:00 PM MST
- In force
- 3 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Mohave County, AZ
The radar
The Las Vegas radar (KESX), 141 km from the middle of the area, began a volume at 23:12 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, 11.2 hours before the alert went out and 159 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
- 37 J/kg
- Mixed-layer CIN
- -170 J/kg
- Mixed-layer LCL
- 2335 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- -6 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
670
WGUS55 KVEF 202309
FFWVEF
AZC015-210200-
/O.NEW.KVEF.FF.W.0096.160820T2309Z-160821T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
409 PM MST SAT AUG 20 2016
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHEASTERN MOHAVE COUNTY IN NORTHWESTERN ARIZONA...
* UNTIL 700 PM MST
* AT 405 PM MST...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
VERY HEAVY RAIN SOUTHEAST OF THE INTERSTATE 40 AND HIGHWAY 93
INTERSECTION. A RAIN GAUGE IN THE AREA HAS RECORDED 1.77 INCHES OF
RAIN IN THE PAST HOUR. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.
* FLASH FLOODING WILL REMAIN OVER MAINLY SECONDARY ROADS SOUTH OF
INTERSTATE 40 AND EAST OF HIGHWAY 93 IN SOUTHEASTERN MOHAVE COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO CROSS FLOODED
ROADS. FIND AN ALTERNATE ROUTE.
&&
LAT...LON 3515 11346 3492 11336 3504 11366 3509 11366
3515 11363
$$
JS2 follow-up statements
955
WGUS75 KVEF 210035
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
535 PM MST SAT AUG 20 2016
AZC015-210200-
/O.CON.KVEF.FF.W.0096.000000T0000Z-160821T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
535 PM MST SAT AUG 20 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM MST FOR
SOUTHEASTERN MOHAVE COUNTY...
AT 528 PM MST...DOPPLER RADAR INDICATED HEAVY RAIN PRODUCING
THUNDERSTORMS HAVE MOVED OUT OF THE WARNING AREA AND ONLY LIGHT TO
MODERATE SHOWERS REMAINED. HOWEVER...THE WARNING WILL BE CONTINUED
DUE TO EARLIER TORRENTIAL RAINFALL AND THE POTENTIAL FOR FURTHER
THUNDERSTORM DEVELOPMENT THROUGH 7 PM. MOTORISTS SHOULD USE CAUTION
IN THIS AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO CROSS FLOODED
ROADS. FIND AN ALTERNATE ROUTE.
&&
LAT...LON 3515 11346 3492 11336 3504 11366 3509 11366
3515 11363
$$
JS336
WGUS75 KVEF 210155
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
655 PM MST SAT AUG 20 2016
AZC015-210200-
/O.EXP.KVEF.FF.W.0096.000000T0000Z-160821T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
655 PM MST SAT AUG 20 2016
...THE FLASH FLOOD WARNING FOR SOUTHEASTERN MOHAVE COUNTY WILL EXPIRE
AT 700 PM MST...
THE WARNING WILL BE ALLOWED TO EXPIRE AT 7 PM. LIGHT TO MODERATE
RAIN CONTINUES IN THE WARNED AREA HOWEVER FLOODING IS NOT EXPECTED
TO POSE A THREAT AT THIS TIME. PLEASE CONTINUE TO HEED ANY REMAINING
ROAD CLOSURES.
LAT...LON 3515 11346 3492 11336 3504 11366 3509 11366
3515 11363
$$
JSThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 3:42 PM MST | Areal Flood Advisory | VEF | Mohave | 3 hr |
| Aug 20, 3:52 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 25 min |
Nearby
Flash Flood Warnings in Arizona, 2016Every flash flood warning in 2016
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.