Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 421, NWS Tulsa, OK

June 20, 20114 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jun 20, 2011, 10:09 PM CDT for 4 counties in Oklahoma. It was in force for 81 min. 5 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 20, 2011, 10:09 PM CDT (03:09 UTC)
Expired: Jun 20, 2011, 11:30 PM CDT
In force: 81 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Creek County, OK, Osage County, OK, Pawnee County, OK, Tulsa County, OK

The radar

The Tulsa radar (KINX), 75 km from the middle of the area, began a volume at 03:10 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 20, 10:46 PM CDT	HAIL 1.5	Mannford, OK	PING PONG BALL SIZED HAIL COVERING THE GROUND IN MANNFORD, BROKE WINDSHIELD ON CAR.
Jun 20, 10:52 PM CDT	HAIL 0.5	5 Sw Sand Springs, OK
Jun 20, 10:56 PM CDT	TSTM WND GST 50	Mannford, OK
Jun 20, 11:00 PM CDT	HAIL 1	5 Ne Sapulpa, OK	QUARTER SIZED HAIL IN PRATTVILLE.
Jun 20, 11:10 PM CDT	HAIL 0.88	Sperry, OK	NICKEL HAIL IN SPERRY.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 20, 3:42 PM CDT	Severe Thunderstorm Watch PDS	SPC	7 hr
Jun 20, 9:46 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 3.2 hours before the alert went out and 130 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1985 J/kg
Mixed-layer CIN: -62 J/kg
Mixed-layer LCL: 2113 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 226 m²/s²
0-3 km storm-relative helicity: 276 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 17.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

859 
WUUS54 KTSA 210309
SVRTSA
OKC037-113-117-143-210430-
/O.NEW.KTSA.SV.W.0421.110621T0309Z-110621T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1009 PM CDT MON JUN 20 2011

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CREEK COUNTY IN NORTHEAST OKLAHOMA
  SOUTHEASTERN OSAGE COUNTY IN NORTHEAST OKLAHOMA
  PAWNEE COUNTY IN NORTHEAST OKLAHOMA
  WESTERN TULSA COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 1130 PM CDT

* AT 1006 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 19 MILES WEST OF SHAMROCK TO 4 MILES SOUTHWEST OF
  OILTON...MOVING NORTHEAST AT 60 MPH.

  STORM HAZARDS INCLUDE...
  WIND GUSTS TO 60 MPH...

* SOME LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  OILTON...JENNINGS...TERLTON...SHAMROCK...DRUMRIGHT...WESTPORT...
  MANNFORD...BRISTOW...KELLYVILLE...SPERRY...MOUNDS...SAPULPA...
  KIEFER...SAND SPRINGS...GLENPOOL...COLLINSVILLE...JENKS AND TULSA.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 184 AND 224.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3619 9665 3641 9581 3586 9601 3585 9619
      3584 9620 3580 9662 3615 9663 3616 9668
TIME...MOT...LOC 0309Z 246DEG 51KT 3590 9687 3607 9660

$$

5 follow-up statements

560 
WWUS54 KTSA 210322
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1022 PM CDT MON JUN 20 2011

OKC037-113-117-143-210430-
/O.CON.KTSA.SV.W.0421.000000T0000Z-110621T0430Z/
CREEK OK-OSAGE OK-PAWNEE OK-TULSA OK-
1022 PM CDT MON JUN 20 2011

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR WESTERN TULSA...PAWNEE...SOUTHEASTERN OSAGE AND CREEK COUNTIES...

AT 1019 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM SHAMROCK TO SILVER CITY...MOVING NORTHEAST AT 60 MPH.

STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
DAMAGING WIND GUSTS TO 70 MPH...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...BRISTOW...
MANNFORD...WESTPORT...WALNUT CREEK STATE PARK...KEYSTONE STATE
PARK...KELLYVILLE...MOUNDS...SAND SPRINGS...SAPULPA...KIEFER...
GRAY...SPERRY...GLENPOOL...JENKS...TULSA AND COLLINSVILLE.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 182 AND 224.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3619 9665 3641 9581 3586 9601 3585 9619
      3584 9620 3580 9662 3615 9663 3616 9668
TIME...MOT...LOC 0322Z 246DEG 51KT 3591 9655 3614 9646

$$

686 
WWUS54 KTSA 210330
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1030 PM CDT MON JUN 20 2011

OKC037-113-117-143-210430-
/O.CON.KTSA.SV.W.0421.000000T0000Z-110621T0430Z/
CREEK OK-OSAGE OK-PAWNEE OK-TULSA OK-
1030 PM CDT MON JUN 20 2011

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR WESTERN TULSA...PAWNEE...SOUTHEASTERN OSAGE AND CREEK COUNTIES...

AT 1028 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM BRISTOW TO MANNFORD...MOVING NORTHEAST AT 60 MPH.

STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
DAMAGING WIND GUSTS TO 70 MPH...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
MANNFORD...WESTPORT...KEYSTONE STATE PARK...WALNUT CREEK STATE
PARK...KELLYVILLE...MOUNDS...SAND SPRINGS...SAPULPA...KIEFER...
GRAY...GLENPOOL...SPERRY...JENKS...TULSA AND COLLINSVILLE.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 182 AND 224.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3619 9665 3641 9581 3586 9601 3585 9619
      3584 9620 3580 9662 3615 9663 3616 9668
TIME...MOT...LOC 0330Z 246DEG 51KT 3590 9642 3616 9640

$$

595 
WWUS54 KTSA 210335
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1035 PM CDT MON JUN 20 2011

OKC037-113-117-143-210430-
/O.CON.KTSA.SV.W.0421.000000T0000Z-110621T0430Z/
CREEK OK-OSAGE OK-PAWNEE OK-TULSA OK-
1035 PM CDT MON JUN 20 2011

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR WESTERN TULSA...PAWNEE...SOUTHEASTERN OSAGE AND CREEK COUNTIES...

AT 1033 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 8 MILES WEST OF KELLYVILLE TO SILVER CITY...MOVING
NORTHEAST AT 60 MPH.

STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
DAMAGING WIND GUSTS TO 70 MPH...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
MANNFORD...KELLYVILLE...WESTPORT...KEYSTONE STATE PARK...WALNUT CREEK
STATE PARK...MOUNDS...SAPULPA...KIEFER...SAND SPRINGS...GLENPOOL...
GRAY...JENKS...TULSA...SPERRY AND COLLINSVILLE.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 182 AND 224.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3619 9665 3641 9581 3586 9601 3585 9619
      3584 9620 3580 9662 3615 9663 3616 9668
TIME...MOT...LOC 0336Z 246DEG 51KT 3598 9631 3615 9642

$$

668 
WWUS54 KTSA 210339
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1039 PM CDT MON JUN 20 2011

OKC037-113-117-143-210430-
/O.CON.KTSA.SV.W.0421.000000T0000Z-110621T0430Z/
CREEK OK-OSAGE OK-PAWNEE OK-TULSA OK-
1039 PM CDT MON JUN 20 2011

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR WESTERN TULSA...PAWNEE...SOUTHEASTERN OSAGE AND CREEK COUNTIES...

AT 1037 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM KELLYVILLE TO MANNFORD...MOVING NORTHEAST AT 60 MPH.

STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
DAMAGING WIND GUSTS TO 70 MPH...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
KELLYVILLE...WESTPORT...KEYSTONE STATE PARK...WALNUT CREEK STATE
PARK...MOUNDS...SAPULPA...KIEFER...SAND SPRINGS...GLENPOOL...GRAY...
JENKS...TULSA...SPERRY AND COLLINSVILLE.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 182 AND 224.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3619 9665 3641 9581 3586 9601 3585 9619
      3584 9620 3580 9662 3615 9663 3616 9668
TIME...MOT...LOC 0339Z 246DEG 51KT 3597 9627 3614 9635

$$

251 
WWUS54 KTSA 210343
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1043 PM CDT MON JUN 20 2011

OKC037-113-117-143-210430-
/O.CON.KTSA.SV.W.0421.000000T0000Z-110621T0430Z/
CREEK OK-OSAGE OK-PAWNEE OK-TULSA OK-
1043 PM CDT MON JUN 20 2011

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR WESTERN TULSA...PAWNEE...SOUTHEASTERN OSAGE AND CREEK COUNTIES...

AT 1041 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM BRISTOW TO 6 MILES SOUTH OF KEYSTONE STATE PARK TO
WESTPORT...MOVING NORTHEAST AT 60 MPH.

STORM HAZARDS INCLUDE...
DAMAGING GOLF BALL SIZE HAIL...
DAMAGING WIND GUSTS TO 70 MPH...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...KEYSTONE
STATE PARK...WESTPORT...WALNUT CREEK STATE PARK...KELLYVILLE...SAND
SPRINGS...GRAY...SAPULPA...MOUNDS...KIEFER...TULSA...GLENPOOL...
SPERRY...JENKS AND COLLINSVILLE.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 182 AND 224.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3619 9665 3641 9581 3586 9601 3585 9619
      3584 9620 3580 9662 3615 9663 3616 9668
TIME...MOT...LOC 0343Z 246DEG 51KT 3587 9632 3606 9622
          3621 9635

$$

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 20, 8:09 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	96 min
Jun 20, 8:51 PM CDT	Severe Thunderstorm Warning	TSA	Osage	54 min
Jun 20, 9:18 PM CDT	Special Weather Statement	TSA	Osage, Pawnee, Washington	42 min
Jun 20, 9:20 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	55 min
Jun 20, 9:51 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Tulsa, Washington	54 min
Jun 20, 10:03 PM CDT	Special Weather Statement	TSA	Creek, Tulsa	42 min
Jun 20, 10:22 PM CDT	Special Weather Statement	TSA	Craig, Nowata	23 min
Jun 20, 10:39 PM CDT	Special Weather Statement	TSA	Okfuskee	36 min
Jun 20, 10:44 PM CDT	Special Weather Statement	TSA	Nowata, Washington	31 min
Jun 20, 10:49 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Rogers, Tulsa, Wagoner	71 min
Jun 20, 11:05 PM CDT	Special Weather Statement	TSA	Okmulgee	25 min
Jun 20, 11:13 PM CDT	Special Weather Statement	TSA	Nowata	32 min
Jun 20, 11:32 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Craig, Delaware, Mayes, Nowata, Ottawa and 3 more	73 min
Jun 20, 11:40 PM CDT	Special Weather Statement	TSA	Creek	35 min
Jun 20, 11:57 PM CDT	Special Weather Statement	TSA	McIntosh, Muskogee	33 min
Jun 21, 12:19 AM CDT	Severe Thunderstorm Warning	TSA	Choctaw, Pushmataha	41 min
Jun 21, 12:39 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes, Ottawa	66 min
Jun 21, 12:49 AM CDT	Special Weather Statement	TSA	Craig	26 min
Jun 21, 1:03 AM CDT	Special Weather Statement	TSA	Cherokee	27 min
Jun 21, 6:21 PM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	39 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2011 Every 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.