Alert archive / Nevada / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 84, NWS Las Vegas, NV
NWS Las Vegas, NV issued this severe thunderstorm warning at Jul 7, 2011, 3:18 PM PDT for Clark County, Nevada; Mohave County, Arizona. It was in force for 42 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 7, 2011, 3:18 PM PDT (22:18 UTC)
- Expired
- Jul 7, 2011, 4:00 PM PDT
- In force
- 42 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
Counties Mohave County, AZ, Clark County, NV
The radar
The Las Vegas radar (KESX), 26 km from the middle of the area, began a volume at 22:20 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
Las Vegas, NV (KVEF), launched 12:00Z, 10.3 hours before the alert went out and 80 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
- 34 J/kg
- Mixed-layer CIN
- -208 J/kg
- Mixed-layer LCL
- 2113 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 114 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
436
WUUS55 KVEF 072218
SVRVEF
AZC015-NVC003-072300-
/O.NEW.KVEF.SV.W.0084.110707T2218Z-110707T2300Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
318 PM PDT THU JUL 7 2011
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EXTREME WEST CENTRAL MOHAVE COUNTY IN NORTHWEST ARIZONA...
CENTRAL CLARK COUNTY IN SOUTHERN NEVADA...
* UNTIL 400 PM PDT/400 PM MST/.
* AT 315 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH. THIS STORM WAS LOCATED NEAR BOULDER CITY...AND MOVING
NORTHEAST AT 10 MPH.
* LOCATIONS IMPACTED INCLUDE...BOULDER BEACH...BOULDER CITY...HOOVER
DAM...RAILROAD PASS AND BOULDER BEACH CAMPGROUND.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM IS CAPABLE OF PRODUCING DAMAGING WINDS WHICH CAN BRING
DOWN TREES AND POWER LINES AND CAUSE SIGNIFICANT BLOWING DUST AND
DEBRIS. IN ADDITION...HAIL AND LIGHTNING ARE LIKELY. LIGHTNING CAN
KILL! TAKE COVER IN A SUBSTANTIAL SHELTER AND STAY AWAY FROM WINDOWS
UNTIL THE STORM PASSES.
REPORT SEVERE WEATHER BY POSTING YOUR REPORT TO THE LAS VEGAS
NATIONAL WEATHER SERVICE FACEBOOK PAGE OR TWITTER #NWSVEGAS.
&&
LAT...LON 3609 11486 3598 11460 3586 11474 3572 11494
3585 11501
TIME...MOT...LOC 2218Z 221DEG 9KT 3592 11486
$$
STACHELSKI1 follow-up statement
182
WWUS55 KVEF 072256
SVSVEF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
356 PM PDT THU JUL 7 2011
AZC015-NVC003-072306-
/O.EXP.KVEF.SV.W.0084.000000T0000Z-110707T2300Z/
MOHAVE AZ-CLARK NV-
356 PM PDT THU JUL 7 2011
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CLARK AND EXTREME WEST
CENTRAL MOHAVE COUNTIES WILL EXPIRE AT 400 PM PDT/400 PM MST/...
THIS THUNDERSTORM IS STILL SEVERE BUT HAS MOVED OUT OF THE ORIGINAL
WARNING AREA. A NEW WARNING HAS BEEN ISSUED TO EXPAND THE AREA
IMPACTED BY THIS STORM. PLEASE SEE THE LATEST SEVERE THUNDERSTORM
WARNING FOR DETAILS.
LAT...LON 3609 11486 3598 11460 3586 11474 3572 11494
3585 11501
TIME...MOT...LOC 2256Z 221DEG 9KT 3599 11478
$$
STACHELSKIThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 5:48 PM PDT | Areal Flood Advisory | VEF | Clark, Nye | 71 min |
| Jul 7, 1:01 PM PDT | Areal Flood Advisory | VEF | Clark | 43 min |
| Jul 7, 1:16 PM PDT | Flash Flood Warning | VEF | Clark | 119 min |
| Jul 7, 2:54 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 51 min |
| Jul 7, 3:01 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 33 min |
| Jul 7, 3:32 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 43 min |
| Jul 7, 3:35 PM PDT | Flash Flood Warning | VEF | Clark | 114 min |
| Jul 7, 4:26 PM PDT | Areal Flood Advisory | VEF | Clark | 74 min |
| Jul 7, 4:29 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 46 min |
| Jul 7, 4:37 PM PDT | Flash Flood Warning | VEF | Clark | 53 min |
| Jul 7, 4:52 PM PDT | Flash Flood Warning | VEF | Clark | 113 min |
Nearby
Severe Thunderstorm Warnings in Nevada, 2011Severe Thunderstorm Warnings in Arizona, 2011Every severe thunderstorm warning in 2011
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.