Alert archive / Arizona / Flash Flood Warnings in 2021
Flash Flood Warning 32, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 19, 2021, 3:31 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
- Jul 19, 2021, 3:31 PM MST (22:31 UTC)
- Expired
- Jul 19, 2021, 6:30 PM MST
- In force
- 3 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Mohave County, AZ
The radar
The Las Vegas radar (KESX), 70 km from the middle of the area, began a volume at 22:30 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
Las Vegas, NV (KVEF), launched 12:00Z, 10.5 hours before the alert went out and 146 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
- 127 J/kg
- Mixed-layer CIN
- -232 J/kg
- Mixed-layer LCL
- 1964 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
653
WGUS55 KVEF 192231
FFWVEF
AZC015-200130-
/O.NEW.KVEF.FF.W.0032.210719T2231Z-210720T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
331 PM PDT Mon Jul 19 2021
The National Weather Service in Las Vegas has issued a
* Flash Flood Warning for...
West Central Mohave County in northwestern Arizona...
* Until 630 PM MST.
* At 331 PM MST, Doppler radar indicated thunderstorms producing
heavy rain across Stockton Hill Road north of Kingman. Flash
flooding is ongoing or expected to begin shortly.
HAZARD...Life-threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Radar.
IMPACT...Life-threatening flash flooding of low-water
crossings, creeks, normally dry washes and roads.
* Some locations that will experience flash flooding include...
Pierce Ferry And Antares Roads, Dolan Springs, Packsaddle
Campground, Windy Point Campground and Chloride.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3538 11399 3537 11423 3559 11439 3568 11431
3603 11427 3601 11423 3603 11418 3602 11415
3603 11415 3603 11412 3556 11375 3552 11377
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
CP2 follow-up statements
818
WGUS75 KVEF 192331
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
431 PM PDT Mon Jul 19 2021
AZC015-200130-
/O.CON.KVEF.FF.W.0032.000000T0000Z-210720T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
431 PM MST Mon Jul 19 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM MST THIS
EVENING FOR WEST CENTRAL MOHAVE COUNTY...
At 431 PM MST, Doppler radar indicated thunderstorms have weakened
and moved north of the warned area. Between 0.75 and 1 inch of rain
fell west of Stockton Hill Road in 30 minutes. Flash flooding is
ongoing or expected to begin shortly.
HAZARD...Life-threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life-threatening flash flooding of low-water crossings,
creeks, normally dry washes and roads.
Some locations that will experience flash flooding include...
Pierce Ferry And Antares Roads, Dolan Springs, Packsaddle
Campground, Windy Point Campground and Chloride.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3538 11399 3537 11423 3559 11439 3568 11431
3603 11427 3601 11423 3603 11418 3602 11415
3603 11415 3603 11412 3556 11375 3552 11377
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
CP327
WGUS75 KVEF 200122
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
622 PM PDT Mon Jul 19 2021
AZC015-200132-
/O.EXP.KVEF.FF.W.0032.000000T0000Z-210720T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
622 PM MST Mon Jul 19 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 630 PM MST THIS EVENING FOR
WEST CENTRAL MOHAVE COUNTY...
Flood waters have receded. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
A Flash Flood Watch remains in effect until 800 PM MST for a portion
of northwest Arizona.
LAT...LON 3538 11399 3537 11423 3559 11439 3568 11431
3603 11427 3601 11423 3603 11418 3602 11415
3603 11415 3603 11412 3556 11375 3552 11377
$$
CPThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 5:20 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 40 min |
| Jul 18, 5:40 PM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
| Jul 18, 6:20 PM MST | Flash Flood Warning | VEF | Mohave | 6 hr |
| Jul 19, 2:37 AM MST | Flash Flood Watch | VEF | Mohave | 17 hr |
| Jul 19, 2:31 PM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
Nearby
Flash Flood Warnings in Arizona, 2021Every flash flood warning in 2021
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.