Alert archive / Arizona / Flash Flood Warnings in 2021
Flash Flood Warning 15, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 17, 2021, 1:32 PM MST for Mohave County, Arizona. It was in force for 108 min. 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 17, 2021, 1:32 PM MST (20:32 UTC)
- Expired
- Jul 17, 2021, 3:20 PM MST
- In force
- 108 min
- 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), 109 km from the middle of the area, began a volume at 20:34 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, 8.5 hours before the alert went out and 190 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
- 79 J/kg
- Mixed-layer CIN
- -104 J/kg
- Mixed-layer LCL
- 1452 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 146 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
041
WGUS55 KVEF 172032
FFWVEF
AZC015-172330-
/O.NEW.KVEF.FF.W.0015.210717T2032Z-210717T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
132 PM PDT Sat Jul 17 2021
The National Weather Service in Las Vegas has issued a
* Flash Flood Warning for...
Southern Mohave County in northwestern Arizona...
* Until 430 PM MST.
* At 132 PM MST, Doppler radar indicated thunderstorms producing
heavy rain across the northern end of the Hualapai Mountains.
Flash flooding of D W Ranch Road is 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...
mainly rural areas of Southern Mohave County, including D W Ranch
Road
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 3514 11390 3519 11390 3514 11387
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
Morgan2 follow-up statements
668
WGUS75 KVEF 172125
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
225 PM PDT Sat Jul 17 2021
AZC015-172330-
/O.CON.KVEF.FF.W.0015.000000T0000Z-210717T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
225 PM MST Sat Jul 17 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 PM MST THIS
AFTERNOON FOR SOUTHERN MOHAVE COUNTY...
At 225 PM MST, Doppler radar indicated that heavy rain had moved
away from the far northern end of the Hualapai Mountains. However,
heavy rain had fallen in the old Dean Peak burn scar, and into the
wash which crosses D W Ranch Road near mile marker 2. Flash flooding
is ongoing or expected to begin shortly.
HAZARD...Life-threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life-threatening flash flooding of low-water crossings,
creeks, normally dry washes and roads.
Some locations that will experience flash flooding include...
D W Ranch Road near mile marker 2.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 3514 11390 3519 11390 3514 11387
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
Morgan210 WGUS75 KVEF 172220 FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 320 PM PDT Sat Jul 17 2021 AZC015-172230- /O.CAN.KVEF.FF.W.0015.000000T0000Z-210717T2330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Mohave AZ- 320 PM MST Sat Jul 17 2021 ...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHERN MOHAVE COUNTY... Heavy rain has ended in the D W Ranch Road area. The local fire department reported that washes in the area were flowing, but the roads remain open. Flooding is no longer expected to pose a threat. A Flash Flood Warning remains in effect for the Flag Fire burn scar, including Hualapai Mountain Park, until 515 PM MST. LAT...LON 3514 11390 3519 11390 3514 11387 $$ Morgan
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 2:08 PM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
| Jul 17, 3:53 PM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
| Jul 17, 4:40 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.