Alert archive / Arizona / Flash Flood Warnings in 2021
Flash Flood Warning 7, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 11, 2021, 10:58 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 11, 2021, 10:58 PM MST (05:58 UTC)
- Expired
- Jul 12, 2021, 2:00 AM 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), 52 km from the middle of the area, began a volume at 06:01 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 00:00Z, 6.0 hours before the alert went out and 101 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
- 1152 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 3968 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
328
WGUS55 KVEF 120558
FFWVEF
AZC015-120900-
/O.NEW.KVEF.FF.W.0007.210712T0558Z-210712T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
1058 PM PDT Sun Jul 11 2021
The National Weather Service in Las Vegas has issued a
* Flash Flood Warning for...
Northwestern Mohave County in northwestern Arizona...
* Until 200 AM MST.
* At 1058 PM MST, Doppler radar indicated thunderstorms producing
heavy rain across Temple Bar Road and Detrital Wash. 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...
Temple Bar Road and Detrital Wash in Northwestern Mohave County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3612 11451 3607 11436 3592 11435 3589 11456
3610 11468
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
JA2 follow-up statements
816
WGUS75 KVEF 120707
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
1207 AM PDT Mon Jul 12 2021
AZC015-120900-
/O.CON.KVEF.FF.W.0007.000000T0000Z-210712T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
1207 AM MST Mon Jul 12 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 2 AM MST EARLY THIS
MORNING FOR NORTHWESTERN MOHAVE COUNTY...
At 1207 AM MST, Doppler radar indicated thunderstorms dissipated
before midnight over Temple Bar Road and Detrital Wash. Between 1
and 2 inches of rain are estimated to have fallen in the area. Flash
flooding is ongoing.
HAZARD...Life-threatening flash flooding.
SOURCE...Radar.
IMPACT...Life-threatening flash flooding of low-water crossings,
normally dry washes and roads.
Some locations that will experience flash flooding include...
Temple Bar Road and Detrital Wash in northwestern Mohave County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3612 11451 3607 11436 3592 11435 3589 11456
3610 11468
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
JA109
WGUS75 KVEF 120854
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
154 AM PDT Mon Jul 12 2021
AZC015-120904-
/O.EXP.KVEF.FF.W.0007.000000T0000Z-210712T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
154 AM MST Mon Jul 12 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 2 AM MST EARLY THIS MORNING
FOR NORTHWESTERN MOHAVE COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 3612 11451 3607 11436 3592 11435 3589 11456
3610 11468
$$
COThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 1:11 PM MST | Flash Flood Watch | VEF | Mohave | 40 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.