Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 274, NWS Tulsa, OK

October 13, 2012Delaware County, Ottawa County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Oct 13, 2012, 6:44 PM CDT for Delaware County, Ottawa County, Oklahoma. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Oct 13, 2012, 6:44 PM CDT (23:44 UTC)
Expired
Oct 13, 2012, 7:28 PM CDT
In force
44 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon

Counties Delaware County, OK, Ottawa County, OK

The radar

The Tulsa radar (KINX), 102 km from the middle of the area, began a volume at 23:45 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.

The watch it was issued in

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

IssuedProductOfficeLasted
Oct 13, 5:57 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.7 hours before the alert went out and 94 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 2012-10-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 25 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 2012-10-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 359 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
25 J/kg
Mixed-layer CIN
-385 J/kg
Mixed-layer LCL
685 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
359 m²/s²
0-3 km storm-relative helicity
270 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

926 
WUUS54 KTSA 132344
SVRTSA
OKC041-115-140045-
/O.NEW.KTSA.SV.W.0274.121013T2344Z-121014T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
644 PM CDT SAT OCT 13 2012

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN DELAWARE COUNTY IN NORTHEAST OKLAHOMA
  OTTAWA COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 745 PM CDT

* AT 641 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 16 MILES WEST OF COMMERCE TO 8 MILES WEST OF   
NARCISSA TO 9 MILES WEST OF CLEORA...MOVING EAST AT 40 MPH. DAMAGING 
WINDS TO 72 MPH WERE REPORTED 7 MILES EAST OF CENTRALIA AT 634 PM. 

  STORM HAZARDS INCLUDE...
  DAMAGING WIND GUSTS TO 70 MPH...

* SOME LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  CLEORA...AFTON...NARCISSA...BERNICE...MIAMI...BERNICE STATE PARK...
  COMMERCE...FAIRLAND...PICHER...QUAPAW...GROVE AND WYANDOTTE.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 294 AND 324.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE OUTDOORS SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM
WINDOWS AND DOORS UNTIL THE STORM HAS PASSED.

A TORNADO WATCH IS IN EFFECT FOR THIS AREA. 

&&

LAT...LON 3699 9461 3659 9461 3656 9500 3694 9500
      3695 9500 3697 9504 3699 9503 3700 9501
      3700 9462
TIME...MOT...LOC 2343Z 254DEG 35KT 3700 9513 3683 9504
          3663 9510

$$
2 follow-up statements
294 
WWUS54 KTSA 140001
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
701 PM CDT SAT OCT 13 2012

OKC041-115-140045-
/O.CON.KTSA.SV.W.0274.000000T0000Z-121014T0045Z/
DELAWARE OK-OTTAWA OK-
701 PM CDT SAT OCT 13 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR
OTTAWA AND NORTHERN DELAWARE COUNTIES...

AT 658 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM PICHER TO TWIN BRIDGES STATE PARK TO BERNICE...MOVING
NORTHEAST AT 50 MPH.

STORM HAZARDS INCLUDE...
DAMAGING WIND GUSTS OF 60 TO 70 MPH...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...TWIN
BRIDGES STATE PARK...GROVE...WYANDOTTE...PEORIA AND TIFF CITY.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 294 AND 324.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. PEOPLE OUTDOORS
SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM WINDOWS AND
DOORS UNTIL THE STORM HAS PASSED.

PEOPLE OUTDOORS SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM
WINDOWS AND DOORS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3699 9461 3659 9461 3656 9500 3694 9500
      3695 9500 3697 9504 3699 9503 3700 9501
      3700 9462
TIME...MOT...LOC 0001Z 245DEG 42KT 3701 9479 3683 9477
          3663 9489

$$
098 
WWUS54 KTSA 140028
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
728 PM CDT SAT OCT 13 2012

OKC041-115-140038-
/O.CAN.KTSA.SV.W.0274.000000T0000Z-121014T0045Z/
DELAWARE OK-OTTAWA OK-
728 PM CDT SAT OCT 13 2012

...THE SEVERE THUNDERSTORM WARNING FOR OTTAWA AND NORTHERN DELAWARE
COUNTIES IS CANCELLED...

THE THUNDERSTORM HAS MOVED OUT OF THE WARNED AREA...THEREFORE THE
SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.

GUSTY WINDS...AND VERY HEAVY RAIN WILL STILL BE POSSIBLE OVER 
PORTIONS OF OTTAWA AND NORTHERN DELAWARE COUNTIES THROUGH 8 PM. 

TO REPORT PREVIOUS HAIL OR WIND DAMAGE...HAVE THE NEAREST LAW
ENFORCEMENT AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
FORECAST OFFICE IN TULSA.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT. 

LAT...LON 3699 9461 3659 9461 3656 9500 3694 9500
      3695 9500 3697 9504 3699 9503 3700 9501
      3700 9462
TIME...MOT...LOC 0028Z 245DEG 42KT 3714 9443 3696 9441
          3676 9453

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 13, 12:43 PM CDTFlash Flood WatchTSAAdair, Cherokee, Choctaw, Craig, Creek, Delaware and 16 more12 hr
Oct 13, 4:30 PM CDTSpecial Weather StatementTSACreek30 min
Oct 13, 5:01 PM CDTSpecial Weather StatementTSAOsage29 min
Oct 13, 5:14 PM CDTSevere Thunderstorm WarningTSANowata, Osage, Pawnee, Rogers, Tulsa, Washington61 min
Oct 13, 6:12 PM CDTSevere Thunderstorm WarningTSACraig, Nowata, Rogers48 min
Oct 13, 6:21 PM CDTAreal Flood AdvisoryTSACreek, Osage, Pawnee, Rogers, Tulsa, Washington3 hr
Oct 13, 6:33 PM CDTFlash Flood WarningTSACreek, Osage, Rogers, Tulsa, Wagoner4 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2012Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.