Alert archive / Arizona / Flash Flood Warnings in 2021
Flash Flood Warning 28, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 18, 2021, 6:20 PM MST for Mohave County, Arizona. It was in force for 6 hr. 5 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
- Jul 18, 2021, 6:20 PM MST (01:20 UTC)
- Expired
- Jul 19, 2021, 12:00 AM MST
- In force
- 6 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), 105 km from the middle of the area, began a volume at 01:21 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 |
|---|---|---|---|
| Jul 18, 6:45 PM MST | FLASH FLOOD | 6 Ese Kingman, AZ | EMERGENCY MANAGEMENT REPORTS FLASH FLOODING ACROSS HUALAPAI MOUNTAIN ROAD AT DEVILS DIP. WATER APPEARS TO BE 2-3 FEET DEEP AND FLOWING VERY FAST. |
| Jul 18, 8:51 PM MST | FLASH FLOOD | 2 Nne Hualapai Peak, AZ | FLASH FLOODING IS OCCURRING AT HUALAPAI PARK WITH A SECOND ROUND OF HEAVY RAIN. EMERGENCY MANAGER REPORTS THAT LIFE THREATENING IS OCCURRING INSIDE THE PARK NEAR SUMMER CAMP. |
| Jul 18, 9:07 PM MST | FLASH FLOOD | 2 Nne Hualapai Peak, AZ | MOHAVE COUNTY ROADS REPORTED THAT HUALAPAI MOUNTAIN ROAD IS CLOSED FROM MP6 TO RANGERS STATION DUE TO FLOODING. |
| Jul 18, 9:07 PM MST | FLASH FLOOD | 8 N Hualapai Peak, AZ | MOHAVE COUNTY ROADS REPORTED THAT DW RANCH ROAD IS CLOSED FROM I 40 TO HUALAPAI MOUNTAIN ROAD DUE TO FLOODING. |
| Jul 18, 10:57 PM MST | FLASH FLOOD | 2 Ne Hualapai Peak, AZ | MOHAVE COUNTY EMERGENCY MANAGER REPORTED AT LEAST ONE RESIDENTIAL HOME INUNDATED WITH FLOOD WATERS ON FLAG MINE RD. SEVERAL CAMPGROUND CABINS WERE ALSO IMPACTED BY FLOOD WATERS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 1.3 hours before the alert went out and 195 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
- 5 J/kg
- Mixed-layer CIN
- -178 J/kg
- Mixed-layer LCL
- 1841 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
653
WGUS55 KVEF 190120
FFWVEF
AZC015-190430-
/O.NEW.KVEF.FF.W.0028.210719T0120Z-210719T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
620 PM PDT Sun Jul 18 2021
The National Weather Service in Las Vegas has issued a
* Flash Flood Warning for...
Central Mohave County in northwestern Arizona...
* Until 930 PM MST.
* At 620 PM MST, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Flash flooding is ongoing or
expected to begin shortly near Kingman along Hualapai Mountain
Road and DW Ranch Road as well as Hualapai Mountain Park and the
Flag Fire Burn Scar.
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...
Kingman, Dw Ranch Road, Hualapai Mountain Park, New
Kingman-Butler, Wild Cow Campground, Hualapai Peak, Flag Fire Burn
Scar, and Pine Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Move away from recently burned areas. Life-threatening flooding of
creeks, roads and normally dry washes is likely. The heavy rains
will likely trigger rockslides, mudslides and debris flows in steep
terrain, especially in and around these areas.
&&
LAT...LON 3493 11389 3520 11407 3538 11413 3541 11399
3528 11386 3497 11375
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
JV6 follow-up statements
808
WGUS75 KVEF 190211
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
711 PM PDT Sun Jul 18 2021
AZC015-190430-
/O.CON.KVEF.FF.W.0028.000000T0000Z-210719T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
711 PM MST Sun Jul 18 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM MST THIS
EVENING FOR CENTRAL MOHAVE COUNTY...
At 711 PM MST, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Flash flooding is ongoing over Hualapai
Mountain Road at Devils Dip. Water will continue flowing into Holy
Moses Wash south of Golden Valley, crossing Interstate 40 and
following Shinarump Drive.
HAZARD...Life-threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life-threatening flash flooding of low-water crossings,
creeks, normally dry washes and roads.
Some locations that will experience flash flooding include...
Kingman, Dw Ranch Road, Hualapai Mountain Park, New
Kingman-Butler, Wild Cow Campground and Hualapai Peak.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Move away from recently burned areas. Life-threatening flooding of
creeks, roads and normally dry washes is likely. The heavy rains
will likely trigger rockslides, mudslides and debris flows in steep
terrain, especially in and around these areas.
&&
LAT...LON 3493 11389 3520 11407 3538 11413 3541 11399
3528 11386 3497 11375
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
JV280
WGUS75 KVEF 190322
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
822 PM PDT Sun Jul 18 2021
AZC015-190430-
/O.CON.KVEF.FF.W.0028.000000T0000Z-210719T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
822 PM MST Sun Jul 18 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM MST THIS
EVENING FOR CENTRAL MOHAVE COUNTY...
At 822 PM MST, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Flash flooding is receding over
Hualapai Mountain Road at Devils Dip and into Holy Moses Wash south
of Golden Valley, crossing Interstate 40 and following Shinarump
Drive. Additional thunderstorm formation will once again threaten
the Flag Fire Burn Scar.
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...
Kingman, Dw Ranch Road, Hualapai Mountain Park, New
Kingman-Butler, Wild Cow Campground, Hualapai Peak, Flag Fire Burn
Scar, and Pine Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Move away from recently burned areas. Life-threatening flooding of
creeks, roads and normally dry washes is likely. The heavy rains
will likely trigger rockslides, mudslides and debris flows in steep
terrain, especially in and around these areas.
&&
LAT...LON 3493 11389 3520 11407 3538 11413 3541 11399
3528 11386 3497 11375
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
JV069
WGUS55 KVEF 190336
FFWVEF
AZC015-190600-
/O.EXT.KVEF.FF.W.0028.000000T0000Z-210719T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
836 PM PDT Sun Jul 18 2021
The National Weather Service in Las Vegas has extended the
* Flash Flood Warning for...
Central Mohave County in northwestern Arizona...
* Until 1100 PM MST.
* At 836 PM MST, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Flash flooding is receding over
Hualapai Mountain Road at Devils Dip and into Holy Moses Wash
south of Golden Valley, crossing Interstate 40 and following
Shinarump Drive. Additional thunderstorm formation is once again
threatening the Flag Fire Burn Scar.
HAZARD...Life-threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Radar and gauges.
IMPACT...Life-threatening flash flooding of low-water
crossings, creeks, normally dry washes and roads.
* Some locations that will experience flash flooding include...
Kingman, Dw Ranch Road, Hualapai Mountain Park, New
Kingman-Butler, Wild Cow Campground, Hualapai Peak, Flag Fire Burn
Scar, and Pine Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Move away from recently burned areas. Life-threatening flooding of
creeks, roads and normally dry washes is likely. The heavy rains
will likely trigger rockslides, mudslides and debris flows in steep
terrain, especially in and around these areas.
&&
LAT...LON 3493 11389 3520 11407 3538 11413 3541 11399
3528 11386 3497 11375
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
JV806
WGUS75 KVEF 190405
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
905 PM PDT Sun Jul 18 2021
AZC015-190600-
/O.CON.KVEF.FF.W.0028.000000T0000Z-210719T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
905 PM MST Sun Jul 18 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING FOR CENTRAL MOHAVE COUNTY...
At 905 PM MST, emergency manager reported life-threatening flash
flooding in Hualapai Mountain Park. Between 1.25 and 1.5 inches of
rain have fallen. Flash flooding is already occurring seek higher
ground.
HAZARD...Life-threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Emergency management 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, Dw Ranch Road, Hualapai Mountain Park, New
Kingman-Butler, Wild Cow Campground and Hualapai Peak.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Move away from recently burned areas. Life-threatening flooding of
creeks, roads and normally dry arroyos is likely. The heavy rains
will likely trigger rockslides, mudslides and debris flows in steep
terrain, especially in and around these areas.
&&
LAT...LON 3493 11389 3520 11407 3538 11413 3541 11399
3528 11386 3497 11375
FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
CP817
WGUS55 KVEF 190541
FFWVEF
AZC015-190700-
/O.EXT.KVEF.FF.W.0028.000000T0000Z-210719T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
1041 PM PDT Sun Jul 18 2021
The National Weather Service in Las Vegas has extended the
* Flash Flood Warning for...
Southern Mohave County in northwestern Arizona...
* Until midnight MST.
* At 1041 PM MST, Mohave County Emergency Management reported
ongoing flash flooding in Hualapai Mountain Park and on the Flag
Fire Burn Scar. Between 1.25 and 1.75 inches of rain have fallen
in these areas. Additional thunderstorms are moving into these
areas and rainfall rates of 0.5 to 1 inch in 1 hour are possible.
Flash flooding is expected to continue or worsen in this area.
HAZARD...Life-threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Emergency management and rain gage reporting.
IMPACT...Life-threatening flash flooding of Hualapai Mountain
Campground, any roadways in the Hualapai Mountain
area, as well as low-water crossings, creeks, and
washes.
* Some locations that will experience flash flooding include...
Hualapai Mountain Park, Wild Cow Campground, Dw Ranch Road and
Hualapai Peak.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move away from recently burned areas. Life-threatening flooding of
creeks, roads and normally dry arroyos is likely. The heavy rains
will likely trigger rockslides, mudslides and debris flows in steep
terrain, especially in and around these areas.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 3493 11389 3516 11402 3523 11385 3497 11375
FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.5-1 INCH IN 1 HOUR
$$
TB154 WGUS75 KVEF 190657 FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 1157 PM PDT Sun Jul 18 2021 AZC015-190707- /O.EXP.KVEF.FF.W.0028.000000T0000Z-210719T0700Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Mohave AZ- 1157 PM MST Sun Jul 18 2021 ...FLASH FLOOD WARNING WILL EXPIRE AT MIDNIGHT MST TONIGHT FOR THE HUALAPAI MOUNTAIN STATE PARK AND FLAG FIRE BURN SCAR IN SOUTHERN MOHAVE COUNTY... The heavy rain has ended that caused the flooding situation in the Hualapai Mountain Campground area. Ongoing flooding should continue to decrease as only light showers are expected the remainder of the evening. Additional Flash Flooding impacts are no longer expected. However, please continue to heed remaining road closures. LAT...LON 3493 11389 3516 11402 3523 11385 3497 11375 $$ TB
The 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 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 |
| Jul 19, 3:31 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.