Alert archive / Nevada / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 85, NWS Las Vegas, NV
NWS Las Vegas, NV issued this severe thunderstorm warning at Jul 7, 2011, 3:32 PM PDT for Clark County, Nevada; Mohave County, Arizona. It was in force for 43 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, 3:32 PM PDT (22:32 UTC)
- Expired
- Jul 7, 2011, 4:15 PM PDT
- In force
- 43 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), 55 km from the middle of the area, began a volume at 22:34 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, 10.5 hours before the alert went out and 69 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.
827 WUUS55 KVEF 072232 SVRVEF AZC015-NVC003-072315- /O.NEW.KVEF.SV.W.0085.110707T2232Z-110707T2315Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 332 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 415 PM PDT/415 PM MST/. * AT 330 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 BEACH...OR NEAR BOULDER CITY...AND MOVING NORTH AT 10 MPH. * LOCATIONS IMPACTED INCLUDE...BOULDER BEACH...BOULDER CITY... CALLVILLE BAY...HOOVER DAM...LAS VEGAS BAY...BOULDER BEACH CAMPGROUND...CALLVILLE BAY CAMPGROUND AND LAS VEGAS BAY 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. THIS STORM WILL AFFECT LAKE MEAD. IF POSSIBLE...GET OUT OF THE WATER AND SEEK SHELTER. IF OUT IN OPEN WATERS...HEAD TO SHORE IF THERE IS TIME...OTHERWISE DROP ANCHOR AND TAKE SHELTER IN THE BOAT CABIN. STAY AWAY FROM METAL AND ALL ELECTRICAL COMPONENTS. LIGHTNING KILLS! IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. && LAT...LON 3637 11487 3627 11454 3594 11477 3599 11496 TIME...MOT...LOC 2232Z 200DEG 9KT 3604 11484 $$ STACHELSKI
2 follow-up statements
782 WWUS55 KVEF 072254 SVSVEF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 354 PM PDT THU JUL 7 2011 AZC015-NVC003-072315- /O.CON.KVEF.SV.W.0085.000000T0000Z-110707T2315Z/ MOHAVE AZ-CLARK NV- 354 PM PDT THU JUL 7 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM PDT/415 PM MST/ FOR CENTRAL CLARK AND EXTREME WEST CENTRAL MOHAVE COUNTIES... AT 350 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 70 MPH. THIS STORM WAS LOCATED NEAR BOULDER BEACH...OR NEAR LAS VEGAS BAY...MOVING NORTH AT 10 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LAS VEGAS BAY CAMPGROUND...CALLVILLE BAY CAMPGROUND AND CALLVILLE BAY PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM IS CAPABLE OF PRODUCING DAMAGING WINDS WHICH CAN BRING DOWN TREES AND POWER LINES AND CAUSE SIGNIFICANT BLOWING DUST AND DEBRIS. IN ADDITION...HAIL AND LIGHTNING ARE LIKELY. LIGHTNING CAN KILL! TAKE COVER IN A SUBSTANTIAL SHELTER AND STAY AWAY FROM WINDOWS UNTIL THE STORM PASSES. REPORT SEVERE WEATHER BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE OR TWITTER #NWSVEGAS. THIS STORM WILL AFFECT LAKE MEAD. IF POSSIBLE...GET OUT OF THE WATER AND SEEK SHELTER. IF OUT IN OPEN WATERS...HEAD TO SHORE IF THERE IS TIME...OTHERWISE DROP ANCHOR AND TAKE SHELTER IN THE BOAT CABIN. STAY AWAY FROM METAL AND ALL ELECTRICAL COMPONENTS. LIGHTNING KILLS! IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. && LAT...LON 3637 11487 3627 11454 3594 11477 3599 11496 TIME...MOT...LOC 2254Z 200DEG 9KT 3609 11482 $$ STACHELSKI
727 WWUS55 KVEF 072314 SVSVEF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 414 PM PDT THU JUL 7 2011 AZC015-NVC003-072323- /O.EXP.KVEF.SV.W.0085.000000T0000Z-110707T2315Z/ MOHAVE AZ-CLARK NV- 414 PM PDT THU JUL 7 2011 ...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CLARK AND EXTREME WEST CENTRAL MOHAVE COUNTIES WILL EXPIRE AT 415 PM PDT/415 PM MST/... NATIONAL WEATHER SERVICE RADAR SHOWED THUNDERSTORMS HAVE WEAKENED NEAR LAKE LAS VEGAS...THUS THE SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO EXPIRE. LAT...LON 3637 11487 3627 11454 3594 11477 3599 11496 TIME...MOT...LOC 2313Z 200DEG 9KT 3613 11480 $$ STACHELSKI
The 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, 3:18 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 42 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.