Alert archive / Arizona / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 21, NWS Las Vegas, NV
NWS Las Vegas, NV issued this severe thunderstorm warning at Aug 1, 2017, 6:09 PM MST for Mohave County, Arizona; Clark County, Nevada; San Bernardino County, California. It was in force for 51 min. 3 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 1, 2017, 6:09 PM MST (01:09 UTC)
- Expired
- Aug 1, 2017, 7:00 PM MST
- In force
- 51 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Mohave County, AZ, San Bernardino County, CA, Clark County, NV
The radar
The Las Vegas radar (KESX), 54 km from the middle of the area, began a volume at 01:11 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 1, 6:30 PM MST | TSTM WND DMG | 1 Sw Mohave Valley, AZ | THUNDERSTORM WINDS AND DEBRIS BLEW OUT A WINDOW OF A RESIDENCE. REPORT SUBMITTED VIA SOCIAL MEDIA AND A PHOTOGRAPH. |
| Aug 1, 6:30 PM MST | TSTM WND GST 58 | 5 Nne Bullhead City, AZ | EAST-SOUTHEAST WINDS 38 MPH GUSTING TO 58 MPH REPORTED BY IFP ASOS AT 630 PM. |
| Aug 1, 6:30 PM MST | TSTM WND GST 60 | 1 S Bullhead City, AZ | SPOTTER REPORTS STRONG WINDS AND LOW VISIBILITY DUE TO BLOWING DUST. ESTIMATED WIND SPEEDS GUSTING TO NEAR 60 MPH. CROSS STREETS ARE US95 AND MOHAVE DRIVE. |
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 00:00Z, 1.2 hours before the alert went out and 149 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
- 277 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 3687 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
239
WUUS55 KVEF 020109
SVRVEF
AZC015-CAC071-NVC003-020200-
/O.NEW.KVEF.SV.W.0021.170802T0109Z-170802T0200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Las Vegas NV
609 PM PDT TUE AUG 1 2017
The National Weather Service in Las Vegas has issued a
* Severe Thunderstorm Warning for...
West central Mohave County in northwestern Arizona...
East central San Bernardino County in southern California...
South central Clark County in southern Nevada...
* Until 700 PM PDT/700 PM MST/
* At 608 PM PDT/608 PM MST/, a severe thunderstorm was located near
Oatman, or 7 miles southeast of Bullhead City, moving west at 20
mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Bullhead City, Laughlin, Katherine Landing, Needles, Oatman, Mojave
Ranch Estates, Mohave Valley, Cottonwood Cove Campground, Big Bend
Rec Area, Mesquite Creek, Arizona Village, Cottonwood Cove and
Willow Valley.
This includes Interstate 40 in California between mile markers 138
and 146.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
If on or near Lake Mohave, get away from 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.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3564 11450 3488 11421 3478 11466 3514 11477
3566 11484
TIME...MOT...LOC 0108Z 092DEG 17KT 3508 11446
HAIL...<.75IN
WIND...60MPH
$$
STEELE2 follow-up statements
627
WWUS55 KVEF 020139
SVSVEF
Severe Weather Statement
National Weather Service Las Vegas NV
639 PM PDT TUE AUG 1 2017
AZC015-CAC071-NVC003-020200-
/O.CON.KVEF.SV.W.0021.000000T0000Z-170802T0200Z/
Mohave AZ-San Bernardino CA-Clark NV-
639 PM PDT TUE AUG 1 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM
PDT/700 PM MST/ FOR WEST CENTRAL MOHAVE...EAST CENTRAL SAN BERNARDINO
AND SOUTH CENTRAL CLARK COUNTIES...
At 639 PM PDT/639 PM MST/, a severe thunderstorm was located over Big
Bend Rec Area, or near Laughlin, moving west at 20 mph.
HAZARD...60 mph wind gusts.
SOURCE...Trained weather spotters.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Bullhead City, Laughlin, Katherine Landing, Needles, Oatman, Mojave
Ranch Estates, Mohave Valley, Cottonwood Cove Campground, Big Bend
Rec Area, Mesquite Creek, Arizona Village, Cottonwood Cove and Willow
Valley.
This includes Interstate 40 in California between mile markers 138
and 146.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
If on or near Lake Mohave, get away from the water and move indoors
or inside a vehicle. remember, lightning can strike out to 15 miles
from the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not
be caught on the water in a thunderstorm.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3564 11450 3488 11421 3478 11466 3514 11477
3566 11484
TIME...MOT...LOC 0139Z 092DEG 17KT 3509 11464
HAIL...<.75IN
WIND...60MPH
$$
STEELE955
WWUS55 KVEF 020158
SVSVEF
Severe Weather Statement
National Weather Service Las Vegas NV
658 PM PDT TUE AUG 1 2017
AZC015-CAC071-NVC003-020207-
/O.EXP.KVEF.SV.W.0021.000000T0000Z-170802T0200Z/
Mohave AZ-San Bernardino CA-Clark NV-
658 PM PDT TUE AUG 1 2017
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL MOHAVE...EAST
CENTRAL SAN BERNARDINO AND SOUTH CENTRAL CLARK COUNTIES WILL EXPIRE
AT 700 PM PDT/700 PM MST/...
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire. However gusty winds
and heavy rain are still possible for the next hour.
LAT...LON 3564 11450 3488 11421 3478 11466 3514 11477
3566 11484
TIME...MOT...LOC 0157Z 092DEG 17KT 3509 11472
$$
STEELEThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 5:30 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 75 min |
| Aug 1, 5:37 PM MST | Areal Flood Advisory | VEF | Mohave | 3 hr |
| Aug 1, 5:45 PM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
| Aug 2, 4:18 PM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
| Aug 2, 4:38 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 37 min |
| Aug 2, 2:44 PM MST | Areal Flood Advisory | VEF | Clark, Nye | 2 hr |
| Aug 2, 4:52 PM MST | Flash Flood Warning | VEF | Clark | 3 hr |
| Aug 1, 7:51 PM MST | Areal Flood Advisory | VEF | San Bernardino | 6 hr |
| Aug 2, 4:11 PM MST | Flash Flood Warning | VEF | Inyo | 3 hr |
Nearby
Severe Thunderstorm Warnings in Arizona, 2017Severe Thunderstorm Warnings in Nevada, 2017Severe Thunderstorm Warnings in California, 2017Every severe thunderstorm warning in 2017
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.