Alert archive / Arizona / Dust Storm Warnings in 2021
Dust Storm Warning 4, NWS Las Vegas, NV
NWS Las Vegas, NV issued this dust storm warning at Aug 10, 2021, 5:49 PM MST for Mohave County, Arizona; San Bernardino County, California. It was in force for 56 min. 4 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, 5:49 PM MST (00:49 UTC)
- Expired
- Aug 10, 2021, 6:45 PM MST
- In force
- 56 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
Counties Mohave County, AZ, San Bernardino County, CA
The radar
The Las Vegas radar (KESX), 170 km from the middle of the area, began a volume at 00:48 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, 6:10 PM MST | TSTM WND DMG | 2 Nnw Lake Havasu City, AZ | SHINGLES BLOWN OFF ROOF NEAR N PALO VERDE BLVD AND AVALON AVE. |
| Aug 10, 6:15 PM MST | TSTM WND DMG | 1 Nnw Lake Havasu City, AZ | NUMEROUS SHINGLES BLOWN OFF A HOME NEAR ALPINE DR. AND HAVASUPAI BLVD. |
| Aug 10, 6:15 PM MST | TSTM WND DMG | 1 Sw Lake Havasu City, AZ | SEVERAL LARGE TREES DOWN NEAR SMOKETREE AVE AND MCCULLOCH BLVD. |
| Aug 10, 6:17 PM MST | TSTM WND GST 59 | 2 Wsw Lake Havasu City, AZ | WIND MEASURED NEAR LONDON BRIDGE IN LAKE HAVASU. DATA COURTESY OF EARTH NETWORKS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Phoenix, AZ (KPSR), launched 00:00Z, 0.8 hours before the alert went out and 229 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
- 934 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 1571 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
466
WWUS55 KVEF 110049
DSWVEF
BULLETIN - EAS ACTIVATION REQUESTED
Dust Storm Warning
National Weather Service Las Vegas NV
549 PM PDT Tue Aug 10 2021
AZC015-CAC071-110145-
/O.NEW.KVEF.DS.W.0004.210811T0049Z-210811T0145Z/
Mohave AZ-San Bernardino CA-
549 PM PDT Tue Aug 10 2021
The National Weather Service in Las Vegas has issued a
* Dust Storm Warning for...
South central Mohave County in northwestern Arizona...
Southeastern San Bernardino County in southern California...
* Until 645 PM PDT/645 PM MST/.
* At 548 PM PDT/548 PM MST/, a wall of dust was along a line
extending from 15 miles east of Lake Havasu City to 10 miles
northeast of Cattail Cove State Park to 9 miles northeast of Parker
Dam to 15 miles west of Alamo Lake, moving southwest at 35 mph.
HAZARD...Less than a quarter mile visibility with damaging wind in
excess of 60 mph.
SOURCE...Detected by National Weather Service meteorologists.
IMPACT...Dangerous life-threatening travel.
Locations impacted include...
Lake Havasu City, Parker Dam, Highway 95 At Mile Marker 29, Three
Dunes Campground, Cattail Cove State Park, Black Meadow Landing
Campground, Earp, Vidal Junction, Big River and Desert Hills.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Dust storms lead to dangerous driving conditions with visibility
reduced to near zero. If driving, avoid dust storms if possible. If
caught in one, pull off the road, turn off your lights and keep your
foot off the brake.
If on or near Lake Havasu, get out of the water and move indoors or
inside a vehicle. Remember, lightning can strike out to 15 miles
from the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not
be caught on the water in a thunderstorm.
&&
LAT...LON 3440 11475 3466 11405 3448 11404 3436 11397
3423 11383 3426 11387 3425 11401 3430 11409
3430 11414 3426 11413 3426 11416 3419 11423
3417 11429 3412 11437 3411 11441 3408 11444
3408 11467
TIME...MOT...LOC 0048Z 045DEG 31KT 3459 11406 3447 11405 3435 11398
3424 11385
$$
SC2 follow-up statements
263
WWUS55 KVEF 110115
DSWVEF
Dust Storm Warning
National Weather Service Las Vegas NV
615 PM PDT Tue Aug 10 2021
AZC015-CAC071-110145-
/O.CON.KVEF.DS.W.0004.000000T0000Z-210811T0145Z/
Mohave AZ-San Bernardino CA-
615 PM PDT Tue Aug 10 2021
...A DUST STORM WARNING REMAINS IN EFFECT UNTIL 645 PM PDT/645 PM
MST/ FOR SOUTH CENTRAL MOHAVE AND SOUTHEASTERN SAN BERNARDINO
COUNTIES...
At 614 PM PDT/614 PM MST/, a wall of dust was along a line extending
from Desert Hills to near Lake Havasu City to Buckskin Mountain
Park, moving southwest at 35 mph.
HAZARD...Less than one quarter mile visibility with damaging wind
in excess of 60 mph.
SOURCE...Public.
IMPACT...Dangerous life-threatening travel.
Locations impacted include...
Lake Havasu City, Parker Dam, Highway 95 At Mile Marker 29, Three
Dunes Campground, Cattail Cove State Park, Black Meadow Landing
Campground, Earp, Vidal Junction, Big River and Desert Hills.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Dust storms lead to dangerous driving conditions with visibility
reduced to near zero. If driving, avoid dust storms if possible. If
caught in one, then pull off the road, turn off your lights and keep
your foot off the brake.
If on or near Lake Havasu, get out of the water and move indoors or
inside a vehicle. Remember, lightning can strike out to 15 miles
from the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not
be caught on the water in a thunderstorm.
&&
LAT...LON 3440 11475 3466 11405 3448 11404 3436 11397
3423 11383 3426 11387 3425 11401 3430 11409
3430 11414 3426 11413 3426 11416 3419 11423
3417 11429 3412 11437 3411 11441 3408 11444
3408 11467
TIME...MOT...LOC 0114Z 051DEG 32KT 3453 11439 3443 11435 3423 11417
3411 11401
$$
SC964
WWUS55 KVEF 110138
DSWVEF
Dust Storm Warning
National Weather Service Las Vegas NV
638 PM PDT Tue Aug 10 2021
AZC015-CAC071-110148-
/O.EXP.KVEF.DS.W.0004.000000T0000Z-210811T0145Z/
Mohave AZ-San Bernardino CA-
638 PM PDT Tue Aug 10 2021
...THE DUST STORM WARNING FOR SOUTH CENTRAL MOHAVE AND SOUTHEASTERN
SAN BERNARDINO COUNTIES WILL EXPIRE AT 645 PM PDT/645 PM MST/...
The dust storm which prompted the warning has weakened. Therefore,
the dust storm warning will be allowed to expire. However, areas of
blowing dust will continue to make travel difficult.
LAT...LON 3440 11475 3466 11405 3448 11404 3436 11397
3423 11383 3426 11387 3425 11401 3430 11409
3430 11414 3426 11413 3426 11416 3419 11423
3417 11429 3412 11437 3411 11441 3408 11444
3408 11467
TIME...MOT...LOC 0138Z 045DEG 31KT 3440 11454 3430 11450 3410 11432
3398 11416
$$
SCThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 5:13 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 92 min |
| Aug 10, 6:43 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 47 min |
| Aug 10, 6:55 PM MST | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 10, 11:22 PM MST | Flash Flood Warning | VEF | San Bernardino | 3 hr |
Nearby
Dust Storm Warnings in Arizona, 2021Dust Storm Warnings in California, 2021Every dust storm 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.