Alert archive / Nevada / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 121, NWS Las Vegas, NV
NWS Las Vegas, NV issued this severe thunderstorm warning at Aug 27, 2011, 1:17 PM PDT for Clark County, Nevada. 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
- Aug 27, 2011, 1:17 PM PDT (20:17 UTC)
- Expired
- Aug 27, 2011, 2:00 PM PDT
- In force
- 43 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
County Clark County, NV
The radar
The Las Vegas radar (KESX), 25 km from the middle of the area, began a volume at 20:17 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, 8.3 hours before the alert went out and 96 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
- 107 J/kg
- Mixed-layer CIN
- -312 J/kg
- Mixed-layer LCL
- 2807 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
218 WUUS55 KVEF 272017 SVRVEF NVC003-272100- /O.NEW.KVEF.SV.W.0121.110827T2017Z-110827T2100Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 117 PM PDT SAT AUG 27 2011 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTH CENTRAL CLARK COUNTY IN SOUTHERN NEVADA... * UNTIL 200 PM PDT. * AT 105 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH AND HALF INCH HAIL. THIS STORM WAS LOCATED NEAR NIPTON ROAD MILE MARKER 3...OR 12 MILES NORTHWEST OF SEARCHLIGHT...AND WAS MOVING NORTH AT 5 MPH. * LOCATIONS IMPACTED INCLUDE... HIGHWAY 164 WEST OF SEARCHLIGHT. 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 3567 11523 3565 11500 3543 11499 3548 11520 TIME...MOT...LOC 2015Z 177DEG 13KT 3557 11511 $$ JS
1 follow-up statement
024 WWUS55 KVEF 272051 SVSVEF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 151 PM PDT SAT AUG 27 2011 NVC003-272100- /O.CON.KVEF.SV.W.0121.000000T0000Z-110827T2100Z/ CLARK NV- 151 PM PDT SAT AUG 27 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM PDT FOR SOUTH CENTRAL CLARK COUNTY... AT 141 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH AS WELL AS HEAVY RAIN AND HALF INCH HAIL. THIS STORM WAS LOCATED 12 MILES NORTHWEST OF SEACHLIGHT..AND WAS MOVING NORTH AT 10 MPH. LOCATIONS IMPACTED INCLUDE... AREAS NORTH OF HIGHWAY 164 IN SOUTHERN CLARK COUNTY LAT...LON 3567 11523 3565 11500 3543 11499 3548 11520 TIME...MOT...LOC 2047Z 177DEG 13KT 3569 11512 $$ JS
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 3:19 AM PDT | Excessive Heat Warning | VEF | Clark, Nye | 24 hr |
| Aug 27, 12:01 PM PDT | Areal Flood Advisory | VEF | Clark | 4 hr |
| Aug 27, 1:27 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 31 min |
Nearby
Severe Thunderstorm Warnings in Nevada, 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.