Alert archive / Oklahoma / Tornado Warnings in 2012

Tornado Warning 8, NWS Tulsa, OK

April 14, 2012Pawnee County, Oklahoma

NWS Tulsa, OK issued this tornado warning at Apr 14, 2012, 3:39 AM CDT for Pawnee County, Oklahoma. It was in force for 17 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
Apr 14, 2012, 3:39 AM CDT (08:39 UTC)
Expired
Apr 14, 2012, 3:56 AM CDT
In force
17 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon

County Pawnee County, OK

The radar

The Tulsa radar (KINX), 107 km from the middle of the area, began a volume at 08:42 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
Apr 14, 3:40 AM CDTTSTM WND DMG1 N Pawnee, OK4 INCH TREE LIMBS DOWN AND TIN BLOWN OFF A BUILDING JUST NORTH OF PAWNEE

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
Apr 13, 8:36 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 8.7 hours before the alert went out and 144 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, Norman, OK at 00:00Z on 2012-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2227 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, Norman, OK at 00:00Z on 2012-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 269 square meters per square second.19395878Sfc1 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
2227 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
617 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
269 m²/s²
0-3 km storm-relative helicity
389 m²/s²
Significant tornado parameter
3.5
Supercell composite
15.6

Open this sounding in Storm Lab

The text

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

888 
WFUS54 KTSA 140839
TORTSA
OKC117-140915-
/O.NEW.KTSA.TO.W.0008.120414T0839Z-120414T0915Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
339 AM CDT SAT APR 14 2012

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR...
  PAWNEE COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 415 AM CDT

* AT 338 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR PAWNEE...MOVING NORTHEAST AT 30 MPH.

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  PAWNEE...SKEDEE...BLACKBURN AND RALSTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3655 9680 3656 9675 3648 9670 3644 9672
      3643 9669 3642 9662 3637 9658 3640 9655
      3639 9652 3621 9681 3624 9683 3624 9686
      3628 9693
TIME...MOT...LOC 0839Z 216DEG 26KT 3633 9680

$$
1 follow-up statement
436 
WWUS54 KTSA 140856
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
356 AM CDT SAT APR 14 2012

OKC117-140906-
/O.CAN.KTSA.TO.W.0008.000000T0000Z-120414T0915Z/
PAWNEE OK-
356 AM CDT SAT APR 14 2012

...THE TORNADO WARNING FOR PAWNEE COUNTY IS CANCELLED...

THE THUNDERSTORM NO LONGER APPEARS CAPABLE OF PRODUCING A 
TORNADO...THEREFORE THE TORNADO WARNING HAS BEEN CANCELLED.

GUSTY WINDS...SMALL HAIL AND VERY HEAVY RAIN WILL STILL BE POSSIBLE
WITH THIS STORM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 9 AM.

LAT...LON 3655 9680 3656 9675 3648 9670 3644 9672
      3643 9669 3642 9662 3637 9658 3640 9655
      3639 9652 3621 9681 3624 9683 3624 9686
      3628 9693
TIME...MOT...LOC 0856Z 216DEG 26KT 3643 9671

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 13, 8:44 PM CDTSpecial Weather StatementTSAOsage31 min
Apr 13, 9:16 PM CDTSpecial Weather StatementTSAOsage29 min
Apr 13, 9:42 PM CDTSpecial Weather StatementTSAOsage33 min
Apr 14, 12:35 AM CDTSpecial Weather StatementTSACreek25 min
Apr 14, 12:40 AM CDTSpecial Weather StatementTSAPawnee35 min
Apr 14, 1:18 AM CDTSpecial Weather StatementTSAPawnee57 min
Apr 14, 2:09 AM CDTSpecial Weather StatementTSAOsage, Pawnee66 min
Apr 14, 3:26 AM CDTSpecial Weather StatementTSACraig, Nowata64 min
Apr 14, 3:52 AM CDTSpecial Weather StatementTSAWashington53 min
Apr 14, 4:08 AM CDTSevere Thunderstorm WarningTSANowata, Osage, Rogers, Washington52 min
Apr 14, 4:17 AM CDTSpecial Weather StatementTSACreek28 min
Apr 14, 4:28 AM CDTSevere Thunderstorm WarningTSACreek47 min
Apr 14, 4:54 AM CDTAreal Flood AdvisoryTSANowata, Osage, Washington111 min
Apr 14, 5:00 AM CDTSpecial Weather StatementTSACraig45 min
Apr 14, 5:09 AM CDTSpecial Weather StatementTSAPawnee36 min
Apr 14, 5:12 AM CDTSpecial Weather StatementTSACreek33 min
Apr 14, 5:19 AM CDTSpecial Weather StatementTSAOttawa26 min
Apr 14, 5:41 AM CDTSpecial Weather StatementTSAPawnee49 min
Apr 14, 6:23 AM CDTSpecial Weather StatementTSARogers52 min
Apr 14, 6:32 AM CDTSevere Thunderstorm WarningTSACraig, Mayes, Nowata, Rogers, Tulsa, Washington43 min

Nearby

Tornado Warnings in Oklahoma, 2012Every tornado warning in 2012Tornadoes in 2012

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.