Alert archive / Nevada / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 69, NWS Las Vegas, NV
NWS Las Vegas, NV issued this severe thunderstorm warning at Oct 11, 2012, 8:12 PM PDT for Clark County, Nevada. It was in force for 48 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
- Oct 11, 2012, 8:12 PM PDT (03:12 UTC)
- Expired
- Oct 11, 2012, 9:00 PM PDT
- In force
- 48 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
County Clark County, NV
The radar
The Las Vegas radar (KESX), 47 km from the middle of the area, began a volume at 03:12 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 |
|---|---|---|---|
| Oct 11, 8:17 PM PDT | HAIL 0.88 | Anthem, NV | PUBLIC REPORT OF NICKLE SIZE HAIL IN ANTHEM. |
| Oct 11, 8:21 PM PDT | HAIL 0.25 | 5 Sw Green Valley, NV | |
| Oct 11, 8:35 PM PDT | HAIL 0.88 | 3 Sse Green Valley, NV | NICKEL SIZED HAIL FELL FROM 2030 TO 2035. |
| Oct 11, 8:40 PM PDT | HAIL 1 | 4 Ne Green Valley, NV | DIME TO QUARTER SIZE HAIL WAS REPORTED ON HOLLYWOOD BOULEVARD IN EAST LAS VEGAS. THE WINDSHIELD ON ONE CAR WAS CRACKED. |
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, 3.2 hours before the alert went out and 50 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
- 305 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 1141 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.3
The text
As transmitted, in the capitals the NWS used until 2016.
356 WUUS55 KVEF 120312 SVRVEF NVC003-120400- /O.NEW.KVEF.SV.W.0069.121012T0312Z-121012T0400Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 812 PM PDT THU OCT 11 2012 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL CLARK COUNTY IN SOUTHERN NEVADA... * UNTIL 900 PM PDT. * AT 807 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH AND HAIL UP TO ONE INCH IN DIAMETER. THIS STORM WAS LOCATED NEAR ANTHEM...OR 8 MILES SOUTHEAST OF HENDERSON EXECUTIVE...AND WAS MOVING NORTH AT 30 MPH. * LOCATIONS IMPACTED INCLUDE... HENDERSON EXECUTIVE...HENDERSON...DOWNTOWN LAS VEGAS...ANTHEM... SEVEN HILLS...SILVERADO RANCH...GREEN VALLEY...THE SILVER BOWL... SAM BOYD STADIUM...EAST LAS VEGAS...MCCARRAN INTERNATIONAL AIRPORT...THE STRIP...NORTH LAS VEGAS AIRPORT AND LAS VEGAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM IS CAPABLE OF PRODUCING HAIL UP TO ONE INCH IN DIAMETER AND DAMAGING WINDS UP TO 60 MPH WHICH CAN BRING DOWN TREES AND POWER LINES AND CAUSE SIGNIFICANT BLOWING DUST AND DEBRIS. 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 BY USING THE TWITTER HASHTAG...NWSVEGAS. && LAT...LON 3622 11529 3622 11502 3586 11496 3585 11510 TIME...MOT...LOC 0311Z 164DEG 24KT 3592 11506 $$ KENNEDY
3 follow-up statements
147 WWUS55 KVEF 120325 SVSVEF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 825 PM PDT THU OCT 11 2012 NVC003-120400- /O.CON.KVEF.SV.W.0069.000000T0000Z-121012T0400Z/ CLARK NV- 825 PM PDT THU OCT 11 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM PDT FOR CENTRAL CLARK COUNTY... AT 821 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM. THIS STORM WAS LOCATED NEAR ANTHEM...OR NEAR HENDERSON EXECUTIVE...AND WAS MOVING NORTH AT 30 MPH. THE PUBLIC REPORTED NICKEL SIZED HAIL IN THE ANTHEM AREA. LOCATIONS IMPACTED INCLUDE... HENDERSON...DOWNTOWN LAS VEGAS...SILVERADO RANCH...GREEN VALLEY...THE SILVER BOWL...SAM BOYD STADIUM...EAST LAS VEGAS...MCCARRAN INTERNATIONAL AIRPORT...THE STRIP...NORTH LAS VEGAS AIRPORT... WINDMILL AND GREEN VALLEY PARKWAY...NWS LAS VEGAS...SAM'S TOWN... FLAMINGO AND BOULDER HIGHWAY...UNLV...CHARLESTON AND NELLIS BOULEVARD...STRATOSPHERE TOWER...LAS VEGAS AND CHARLESTON AND RAINBOW BOULEVARD. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM IS CAPABLE OF PRODUCING LARGE HAIL THAT CAN CAUSE INJURY AND DAMAGE PROPERTY. IN ADDITION...STRONG WINDS AND LIGHTNING ARE LIKELY. LIGHTNING CAN KILL! TAKE SHELTER IN A STURDY BUILDING. IF IT IS SAFE TO DO SO...TAKE APPROPRIATE ACTIONS TO PROTECT VEHICLES AND PROPERTY. REPORT SEVERE WEATHER BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG...NWSVEGAS. && LAT...LON 3594 11498 3590 11513 3622 11529 3622 11502 TIME...MOT...LOC 0324Z 164DEG 24KT 3600 11509 $$ KENNEDY
063 WWUS55 KVEF 120345 SVSVEF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 845 PM PDT THU OCT 11 2012 NVC003-120400- /O.CON.KVEF.SV.W.0069.000000T0000Z-121012T0400Z/ CLARK NV- 845 PM PDT THU OCT 11 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM PDT FOR CENTRAL CLARK COUNTY... AT 840 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A CLUSTER OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING HAIL UP TO ONE INCH IN DIAMETER. THESE STORMS WERE LOCATED NEAR UNLV...OR NEAR DOWNTOWN LAS VEGAS...AND WAS MOVING NORTH AT 30 MPH. ALTHOUGH THERE HAVE BEEN NO REPORTS OF WINDS IN EXCESS OF 60 MPH...THERE HAVE BEEN SEVERAL REPORTS OF HAIL...UP TO NICKEL SIZE SO FAR ACROSS THE LAS VEGAS VALLEY. LOCATIONS IMPACTED INCLUDE... DOWNTOWN LAS VEGAS...SPRING VALLEY...THE STRIP...NORTH LAS VEGAS AIRPORT...CHARLESTON AND NELLIS BOULEVARD...STRATOSPHERE TOWER...LAS VEGAS AND CHARLESTON AND RAINBOW BOULEVARD. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM IS CAPABLE OF PRODUCING LARGE HAIL THAT CAN CAUSE INJURY AND DAMAGE PROPERTY. IN ADDITION...STRONG WINDS AND LIGHTNING ARE LIKELY. LIGHTNING CAN KILL! TAKE SHELTER IN A STURDY BUILDING. IF IT IS SAFE TO DO SO...TAKE APPROPRIATE ACTIONS TO PROTECT VEHICLES AND PROPERTY. REPORT SEVERE WEATHER BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG...NWSVEGAS. && LAT...LON 3594 11498 3590 11513 3622 11529 3622 11502 TIME...MOT...LOC 0342Z 164DEG 24KT 3612 11513 $$ KENNEDY
606 WWUS55 KVEF 120401 SVSVEF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 901 PM PDT THU OCT 11 2012 NVC003-120409- /O.EXP.KVEF.SV.W.0069.000000T0000Z-121012T0400Z/ CLARK NV- 901 PM PDT THU OCT 11 2012 ...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CLARK COUNTY WILL EXPIRE AT 900 PM PDT... THIS WARNING HAS BEEN REPLACED BY A NEW WARNING VALID UNTIL 945 PM FOR NORTHEAST LAS VEGAS. NUMEROUS REPORTS OF NICKEL TO QUARTER SIZE HAIL ASSOCIATED WITH THESE STORMS HAVE BEEN RECEIVED. LAT...LON 3594 11498 3590 11513 3622 11529 3622 11502 TIME...MOT...LOC 0359Z 164DEG 24KT 3623 11517 $$ KENNEDY
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 11, 5:25 PM PDT | Severe Thunderstorm Warning | VEF | Clark, Nye | 35 min |
| Oct 11, 5:52 PM PDT | Severe Thunderstorm Warning | VEF | Nye | 53 min |
| Oct 11, 6:45 PM PDT | Flash Flood Warning | VEF | Clark | 2 hr |
| Oct 11, 7:56 PM PDT | Flash Flood Warning | VEF | Clark | 80 min |
| Oct 11, 8:21 PM PDT | Flash Flood Warning | VEF | Clark | 114 min |
| Oct 11, 8:57 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 48 min |
| Oct 11, 9:07 PM PDT | Flash Flood Warning | VEF | Clark | 113 min |
| Oct 11, 9:40 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 27 min |
| Oct 11, 10:15 PM PDT | Flash Flood Warning | VEF | Clark | 2 hr |
| Oct 11, 10:42 PM PDT | Flash Flood Warning | VEF | Clark | 94 min |
| Oct 12, 12:03 AM PDT | Flash Flood Warning | VEF | Nye | 87 min |
| Oct 12, 12:28 AM PDT | Severe Thunderstorm Warning | VEF | Lincoln | 32 min |
| Oct 12, 1:43 PM PDT | Flash Flood Warning | VEF | Clark | 2 hr |
Nearby
Severe Thunderstorm Warnings in Nevada, 2012Every severe thunderstorm warning in 2012
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.