Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 21, NWS Amarillo, TX

June 1, 2011Cimarron County, Oklahoma

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

TimeReportWhereRemark
Jun 1, 7:20 PM CDTTSTM WND GST 602 S Felt, OKESTIMATED 50-60 MPH WIND GUSTS ALONG WITH PEA SIZE HAIL
Jun 1, 7:30 PM CDTTSTM WND GST 603 Sse Boise City, OK60 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.

Skew-T log-pSkew-T log-p diagram, Amarillo Airport, TX at 12:00Z on 2011-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2010 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 12:00Z on 2011-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
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

Open this sounding in Storm Lab

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.