Alert archive / Oklahoma / Tornado Warnings in 2011

Tornado Warning 96, NWS Tulsa, OK

May 24, 2011LeFlore County, Oklahoma; Sebastian County, Arkansas

NWS Tulsa, OK issued this tornado warning at May 24, 2011, 10:56 PM CDT for LeFlore County, Oklahoma; Sebastian County, Arkansas. It was in force for 49 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: May 24, 2011, 10:56 PM CDT (03:56 UTC)
Expired: May 24, 2011, 11:45 PM CDT
In force: 49 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Sebastian County, AR, LeFlore County, OK

The radar

The Western Arkansas radar (KSRX), 30 km from the middle of the area, began a volume at 03:57 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
May 24, 10:56 PM CDT	TSTM WND DMG	Howe, OK	MANY LARGE TREES BLOWN DOWN. DAMAGE EXTENDS TO SOUTHWEST ABOUT 4 MILES. PROBABLE TORNADO.
May 24, 10:57 PM CDT	TSTM WND DMG	Howe, OK	SEVERAL TREES DOWN.
May 24, 11:10 PM CDT	HAIL 0.75	Hartford, AR
May 24, 11:15 PM CDT	TSTM WND DMG	4 Se Poteau, OK	TOR096 POWERLINES DOWNED IN MONROE.
May 24, 11:20 PM CDT	HAIL 1	Huntington, AR

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
May 24, 8:05 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 3.9 hours before the alert went out and 214 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: 1213 J/kg
Mixed-layer CIN: -94 J/kg
Mixed-layer LCL: 941 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 106 m²/s²
0-3 km storm-relative helicity: 200 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 6.2

Open this sounding in Storm Lab

The text

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

901 
WFUS54 KTSA 250356
TORTSA
ARC131-OKC079-250445-
/O.NEW.KTSA.TO.W.0096.110525T0356Z-110525T0445Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
1056 PM CDT TUE MAY 24 2011

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL LE FLORE COUNTY IN SOUTHEAST OKLAHOMA
  SOUTHERN SEBASTIAN COUNTY IN WEST CENTRAL ARKANSAS

* UNTIL 1145 PM CDT

* AT 1053 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A   
TORNADO 4 MILES WEST OF HEAVENER...MOVING NORTHEAST AT 40 MPH. THIS 
IS A DANGEROUS STORM WITH STRONG LOW LEVEL ROTATION...  A TORNADO IS 
OCCURRING OR COULD FORM AT ANY TIME.

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  HEAVENER...HOWE...HARTFORD...MIDLAND...MANSFIELD...HUNTINGTON...
  EXCELSIOR...GREENWOOD...BURNVILLE AND WASHBURN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW! IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS!

NIGHTTIME TORNADOES ARE ESPECIALLY DANGEROUS...TAKE COVER NOW! IF YOU
WAIT UNTIL YOU SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A
SAFE PLACE!

&&

LAT...LON 3514 9413 3510 9414 3507 9423 3500 9423
      3494 9434 3495 9436 3492 9444 3489 9444
      3477 9467 3492 9480 3530 9419 3514 9406
TIME...MOT...LOC 0356Z 235DEG 33KT 3490 9464

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 24, 7:19 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Nowata, Osage, Rogers, Tulsa, Washington	56 min
May 24, 7:27 PM CDT	Severe Thunderstorm Warning	TSA	Creek, McIntosh, Mayes, Muskogee, Okfuskee, Okmulgee and 3 more	48 min
May 24, 7:29 PM CDT	Tornado Warning	TSA	Osage, Washington	31 min
May 24, 7:36 PM CDT	Tornado Warning	TSA	Creek, Okfuskee, Okmulgee	39 min
May 24, 8:02 PM CDT	Tornado Warning	TSA	Creek, Muskogee, Okfuskee, Okmulgee, Tulsa, Wagoner	43 min
May 24, 8:05 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Nowata, Rogers, Tulsa, Wagoner	40 min
May 24, 8:06 PM CDT	Tornado Warning	TSA	Pittsburg	39 min
May 24, 8:09 PM CDT	Flash Flood Warning	TSA	Craig, Delaware, Mayes, Nowata, Ottawa, Rogers	6 hr
May 24, 8:35 PM CDT	Tornado Warning	TSA	Muskogee, Okmulgee, Tulsa, Wagoner	40 min
May 24, 8:39 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Craig, Delaware, Mayes, Nowata and 4 more	66 min
May 24, 8:42 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, Pittsburg, Pushmataha	63 min
May 24, 8:52 PM CDT	Flash Flood Warning	TSA	Adair, Cherokee, Mayes, Muskogee, Wagoner	5 hr
May 24, 9:11 PM CDT	Tornado Warning	TSA	Choctaw	64 min
May 24, 9:14 PM CDT	Tornado Warning	TSA	Cherokee, Delaware, Mayes, Wagoner	46 min
May 24, 9:27 PM CDT	Tornado Warning	TSA	Haskell, Latimer, Pittsburg	48 min
May 24, 9:33 PM CDT	Tornado Warning	TSA	Latimer, LeFlore, Pushmataha	42 min
May 24, 9:42 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes, Ottawa	48 min
May 24, 9:48 PM CDT	Tornado Warning	TSA	Cherokee, Delaware, Mayes	43 min
May 24, 9:55 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, McIntosh, Muskogee, Pittsburg	65 min
May 24, 10:13 PM CDT	Tornado Warning	TSA	Latimer, LeFlore	47 min
May 24, 10:25 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Delaware	65 min
May 24, 10:34 PM CDT	Tornado Warning	TSA	Adair, Cherokee	26 min
May 24, 10:47 PM CDT	Flash Flood Warning	TSA	Haskell, LeFlore, Sequoyah	3 hr
May 24, 10:53 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, LeFlore, Sequoyah	67 min
May 24, 10:54 PM CDT	Tornado Warning	TSA	Adair	36 min
May 24, 11:03 PM CDT	Tornado Warning	TSA	Adair	42 min
May 24, 11:27 PM CDT	Tornado Warning	TSA	LeFlore, Sequoyah	33 min
May 24, 11:41 PM CDT	Tornado Warning	TSA	Sequoyah	34 min
May 24, 7:59 PM CDT	Flash Flood Warning	TSA	Carroll	12 hr
May 24, 11:14 PM CDT	Flash Flood Warning	TSA	Benton, Washington	3 hr
May 24, 11:15 PM CDT	Flash Flood Warning	TSA	Crawford, Franklin, Sebastian	3 hr
May 24, 11:28 PM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll, Madison, Washington	92 min
May 24, 11:31 PM CDT	Severe Thunderstorm Warning	TSA	Franklin, Sebastian	29 min
May 24, 11:54 PM CDT	Flash Flood Warning	TSA	Carroll, Madison	2 hr
May 24, 11:56 PM CDT	Tornado Warning	TSA	Crawford, Franklin, Sebastian, Washington	38 min
May 25, 2:08 AM CDT	Flash Flood Warning	TSA	Benton, Carroll	112 min
May 25, 7:23 AM CDT	Flash Flood Warning	TSA	Carroll	12 hr

Nearby

Tornado Warnings in Oklahoma, 2011 Tornado Warnings in Arkansas, 2011 Every tornado warning in 2011 Tornadoes 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.