Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 21, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Jun 1, 2011, 6:54 PM CDT for Cimarron County, Oklahoma. It was in force for 66 min. 2 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
- Jun 1, 2011, 6:54 PM CDT (23:54 UTC)
- Expired
- Jun 1, 2011, 8:00 PM CDT
- In force
- 66 min
- Issued by
- NWS Amarillo, TX
- Area
- Storm-based polygon
County Cimarron County, OK
The radar
The Amarillo radar (KAMA), 186 km from the middle of the area, began a volume at 23:57 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 |
|---|---|---|---|
| Jun 1, 7:20 PM CDT | TSTM WND GST 60 | 2 S Felt, OK | ESTIMATED 50-60 MPH WIND GUSTS ALONG WITH PEA SIZE HAIL |
| Jun 1, 7:30 PM CDT | TSTM WND GST 60 | 3 Sse Boise City, OK | 60 MPH GUST REPORTED AT BOISE CITY OKLAHOMA MESONET SIITE |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 12:00Z, 11.9 hours before the alert went out and 187 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
- 2010 J/kg
- Mixed-layer CIN
- -122 J/kg
- Mixed-layer LCL
- 1072 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
430 WUUS54 KAMA 012354 SVRAMA OKC025-020100- /O.NEW.KAMA.SV.W.0021.110601T2354Z-110602T0100Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AMARILLO TX 654 PM CDT WED JUN 1 2011 THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CIMARRON COUNTY IN THE PANHANDLE OF OKLAHOMA * UNTIL 800 PM CDT * AT 648 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE DETECTED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 11 MILES NORTHEAST OF BLACK MESA PARK TO 6 MILES SOUTH OF FELT...OR ALONG A LINE EXTENDING FROM 23 MILES NORTHWEST OF BOISE CITY TO 22 MILES EAST OF CLAYTON...MOVING EAST AT 30 MPH. * LOCATIONS IMPACTED INCLUDE... KEYES... GRIGGS... BOISE CITY... FELT... BLACK MESA PARK... WHEELESS... KENTON... PRECAUTIONARY/PREPAREDNESS ACTIONS... DAMAGING WINDS UP TO 60 MPH WERE REPORTED BY THE OKLAHOMA MESONET AT KENTON WITH THIS STORM. THIS IS A DANGEROUS STORM...SEEK SAFE SHELTER AND STAY AWAY FROM WINDOWS. TO REPORT SEVERE WEATHER...PLEASE CALL THE NATIONAL WEATHER SERVICE AT 8 0 6 3 3 5 1 1 2 1. && LAT...LON 3700 10206 3652 10206 3651 10298 3700 10298 TIME...MOT...LOC 2354Z 270DEG 27KT 3698 10272 3648 10273 $$ JACKSON
2 follow-up statements
278 WWUS54 KAMA 020026 SVSAMA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 726 PM CDT WED JUN 1 2011 OKC025-020100- /O.CON.KAMA.SV.W.0021.000000T0000Z-110602T0100Z/ CIMARRON OK- 726 PM CDT WED JUN 1 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR CIMARRON COUNTY... AT 720 PM CDT...THE PUBLIC REPORTED 60 MPH WINDS 2 MILES SOUTHWEST OF FELT. A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH WERE LOCATED ALONG A LINE EXTENDING FROM 17 MILES NORTHEAST OF BLACK MESA PARK TO 10 MILES SOUTHEAST OF FELT...OR ALONG A LINE EXTENDING FROM 19 MILES NORTH OF BOISE CITY TO 19 MILES SOUTHWEST OF BOISE CITY...MOVING EAST AT 30 MPH. THE LINE OF SEVERE THUNDERSTORMS WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. LAT...LON 3700 10287 3700 10206 3652 10206 3651 10292 TIME...MOT...LOC 0026Z 270DEG 27KT 3698 10257 3648 10258 $$ JACKSON
697 WWUS54 KAMA 020049 SVSAMA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 749 PM CDT WED JUN 1 2011 OKC025-020100- /O.CON.KAMA.SV.W.0021.000000T0000Z-110602T0100Z/ CIMARRON OK- 749 PM CDT WED JUN 1 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR CIMARRON COUNTY... AT 730 PM CDT...THE OKLAHOMA MESONET 3 MILES SOUTHEAST OF BOISE CITY RECORDED A WIND GUST OF 60 MPH. THIS STORM WAS LOCATED 10 MILES EAST OF FELT...OR ABOUT 10 MILES SOUTHWEST OF BOISE CITY...MOVING NORTHEAST AT 30 MPH. THIS STORM IS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. ANOTHER DANGEROUS STORM WAS LOCATED 3 MILES WEST OF FELT AND IS CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO KEYES AND GRIGGS. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. LAT...LON 3700 10287 3700 10206 3652 10206 3651 10292 TIME...MOT...LOC 0047Z 245DEG 27KT 3661 10256 $$ JACKSON
Nearby
Severe Thunderstorm Warnings in Oklahoma, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.