Alert archive / Arizona / Flash Flood Warnings in 2021
Flash Flood Warning 103, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 10, 2021, 3:25 PM MST for Mohave County, Arizona. It was in force for 3 hr. 2 reports 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 10, 2021, 3:25 PM MST (22:25 UTC)
- Expired
- Aug 10, 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), 90 km from the middle of the area, began a volume at 22:29 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 10, 4:10 PM MST | FLASH FLOOD | 2 Ssw New Kingman-Butle, AZ | INTERSECTION OF MORROW AND BURBANK FLOODED. |
| Aug 10, 4:34 PM MST | FLASH FLOOD | 1 Sse New Kingman-Butle, AZ | 8 INCHES OF WATER FLOWING OVER BANK STREET JUST NORTH OF THE HIGH SCHOOL. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Las Vegas, NV (KVEF), launched 12:00Z, 10.4 hours before the alert went out and 181 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
- 6 J/kg
- Mixed-layer CIN
- -327 J/kg
- Mixed-layer LCL
- 3246 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
037
WGUS55 KVEF 102225
FFWVEF
AZC015-110130-
/O.NEW.KVEF.FF.W.0103.210810T2225Z-210811T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
325 PM PDT Tue Aug 10 2021
The National Weather Service in Las Vegas has issued a
* Flash Flood Warning for...
Central Mohave County in northwestern Arizona...
* Until 630 PM MST.
* At 325 PM MST, Doppler radar indicated thunderstorms producing
heavy rain in Stockton Hill Road moving south toward New
Kingman-Butler. 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...
Stockton Hill Road and New Kingman-Butler.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3541 11397 3530 11391 3524 11392 3524 11399
3522 11405 3526 11411 3531 11416 3545 11410
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
SC2 follow-up statements
286
WGUS75 KVEF 102305
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
405 PM PDT Tue Aug 10 2021
AZC015-110130-
/O.CON.KVEF.FF.W.0103.000000T0000Z-210811T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
405 PM MST Tue Aug 10 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM MST THIS
EVENING FOR CENTRAL MOHAVE COUNTY...
At 405 PM MST, Rain gauges in New Kingman-Butler along Thompson
Avenue and North Bank Street have received more than 0.75 inches of
rain in under 30 minutes as of 405 pm MST. Flash flooding is ongoing
or expected to begin shortly.
HAZARD...Life-threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Gauges reported.
IMPACT...Life-threatening flash flooding of low-water crossings,
creeks, normally dry washes and roads.
Some locations that will experience flash flooding include...
Kingman and New Kingman-Butler.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3541 11397 3530 11391 3524 11392 3524 11399
3522 11405 3526 11411 3531 11416 3545 11410
FLASH FLOOD...GAUGE INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
SC456
WGUS75 KVEF 110121
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
621 PM PDT Tue Aug 10 2021
AZC015-110131-
/O.EXP.KVEF.FF.W.0103.000000T0000Z-210811T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
621 PM MST Tue Aug 10 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 630 PM MST THIS EVENING FOR
CENTRAL MOHAVE COUNTY...
The heavy rain has ended along Stockton Hill Road and central Mohave
County. Flooding is no longer expected to pose a threat. Please
continue to heed remaining road closures.
LAT...LON 3541 11397 3530 11391 3524 11392 3524 11399
3522 11405 3526 11411 3531 11416 3545 11410
$$
SCThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 12:30 PM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
| Aug 10, 1:22 PM MST | Flash Flood Warning | VEF | Mohave | 2 hr |
| Aug 10, 1:35 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 40 min |
| Aug 10, 2:05 PM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
| Aug 10, 2:06 PM MST | Dust Storm Warning | VEF | Mohave | 54 min |
| Aug 10, 2:13 PM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
| Aug 10, 2:50 PM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
| Aug 10, 3:51 PM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
| Aug 10, 4:59 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.