Alert archive / Oklahoma / Tornado Warnings in 2011

Tornado Warning 64, NWS Tulsa, OK

May 22, 2011Craig County, Delaware County, Ottawa County, Oklahoma

NWS Tulsa, OK issued this tornado warning at May 22, 2011, 6:24 PM CDT for Craig County, Delaware County, Ottawa County, Oklahoma. It was in force for 36 min. 1 report 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 22, 2011, 6:24 PM CDT (23:24 UTC)
Expired
May 22, 2011, 7:00 PM CDT
In force
36 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon

Counties Craig County, OK, Delaware County, OK, Ottawa County, OK

The radar

The Tulsa radar (KINX), 78 km from the middle of the area, began a volume at 23:27 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
May 22, 6:30 PM CDTTSTM WND DMGCleora, OKSTRUCTURES DAMAGED IN CLEORA AREA. TIME ESTIMATED VIA RADAR.

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.

IssuedProductOfficeLasted
May 22, 1:27 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.4 hours before the alert went out and 101 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, Springfield, MO at 12:00Z on 2011-05-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2645 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, Springfield, MO at 12:00Z on 2011-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 424 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
2645 J/kg
Mixed-layer CIN
-122 J/kg
Mixed-layer LCL
678 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
424 m²/s²
0-3 km storm-relative helicity
422 m²/s²
Significant tornado parameter
0.0
Supercell composite
16.9

Open this sounding in Storm Lab

The text

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

669 
WFUS54 KTSA 222324
TORTSA
OKC035-041-115-230000-
/O.NEW.KTSA.TO.W.0064.110522T2324Z-110523T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
624 PM CDT SUN MAY 22 2011

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN CRAIG COUNTY IN NORTHEAST OKLAHOMA
  NORTHERN DELAWARE COUNTY IN NORTHEAST OKLAHOMA
  SOUTHERN OTTAWA COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 700 PM CDT

* AT 622 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 4 MILES WEST OF CLEORA...MOVING EAST AT 30 MPH.

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  CLEORA...AFTON...BERNICE AND GROVE.

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!

&&

LAT...LON 3676 9462 3640 9462 3649 9500 3651 9501
      3652 9510 3669 9509
TIME...MOT...LOC 2325Z 267DEG 25KT 3660 9502

$$
1 follow-up statement
537 
WWUS54 KTSA 222338
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
638 PM CDT SUN MAY 22 2011

OKC035-222348-
/O.CAN.KTSA.TO.W.0064.000000T0000Z-110523T0000Z/
CRAIG OK-
638 PM CDT SUN MAY 22 2011

...THE TORNADO WARNING FOR SOUTHEASTERN CRAIG COUNTY IS CANCELLED...

LAT...LON 3656 9496 3668 9495 3676 9462 3640 9462
      3649 9499
TIME...MOT...LOC 2338Z 270DEG 21KT 3659 9490

$$

OKC041-115-230000-
/O.CON.KTSA.TO.W.0064.000000T0000Z-110523T0000Z/
DELAWARE OK-OTTAWA OK-
638 PM CDT SUN MAY 22 2011

...TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR
SOUTHEASTERN OTTAWA AND NORTHERN DELAWARE COUNTIES...

AT 636 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO LOCATED NEAR BERNICE...
MOVING EAST AT 25 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...ZENA AND
GROVE.

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!

&&

LAT...LON 3656 9496 3668 9495 3676 9462 3640 9462
      3649 9499
TIME...MOT...LOC 2338Z 270DEG 21KT 3659 9490

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 21, 7:46 PM CDTSpecial Weather StatementTSACreek29 min
May 21, 7:54 PM CDTSevere Thunderstorm WarningTSACreek22 min
May 21, 7:58 PM CDTSpecial Weather StatementTSAOkfuskee32 min
May 21, 8:28 PM CDTSpecial Weather StatementTSACreek32 min
May 21, 8:36 PM CDTSevere Thunderstorm WarningTSACreek, Okmulgee, Tulsa39 min
May 21, 9:02 PM CDTSpecial Weather StatementTSATulsa28 min
May 22, 5:17 PM CDTSpecial Weather StatementTSAOttawa28 min
May 22, 5:46 PM CDTSevere Thunderstorm WarningTSAOttawa59 min
May 22, 5:51 PM CDTSpecial Weather StatementTSAWagoner24 min
May 22, 5:54 PM CDTSpecial Weather StatementTSACraig36 min
May 22, 5:59 PM CDTSevere Thunderstorm WarningTSACraig, Delaware, Mayes, Ottawa61 min
May 22, 6:03 PM CDTSevere Thunderstorm WarningTSACherokee, Mayes, Wagoner57 min
May 22, 6:42 PM CDTTornado WarningTSACherokee, Delaware, Mayes, Wagoner33 min
May 22, 6:47 PM CDTSpecial Weather StatementTSAOkfuskee28 min
May 22, 6:52 PM CDTSevere Thunderstorm WarningTSAMcIntosh, Muskogee, Okmulgee38 min
May 22, 6:55 PM CDTTornado WarningTSADelaware65 min

Nearby

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