Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 45, NWS Tulsa, OK

April 14, 20126 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 14, 2012, 6:32 AM CDT for 6 counties in Oklahoma. It was in force for 43 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, 6:32 AM CDT (11:32 UTC)
Expired: Apr 14, 2012, 7:15 AM CDT
In force: 43 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Craig County, OK, Mayes County, OK, Nowata County, OK, Rogers County, OK, Tulsa County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 43 km from the middle of the area, began a volume at 11:34 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
Apr 14, 6:50 AM CDT	HAIL 1	7 Wnw Claremore, OK	OCCURRED IN THE RANCH ACRES SUBDIVISION. PUBLIC REPORT RECEIVED VIA SOCIAL MEDIA. TIME ESTIMATED FROM 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.

Issued	Product	Office	Lasted
Apr 14, 3:42 AM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 11.5 hours before the alert went out and 159 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: 677 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 838 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 132 m²/s²
0-3 km storm-relative helicity: 202 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.1

Open this sounding in Storm Lab

The text

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

200 
WUUS54 KTSA 141132
SVRTSA
OKC035-097-105-131-143-147-141215-
/O.NEW.KTSA.SV.W.0045.120414T1132Z-120414T1215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
632 AM CDT SAT APR 14 2012

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN CRAIG COUNTY IN NORTHEAST OKLAHOMA
  NORTHWESTERN MAYES COUNTY IN NORTHEAST OKLAHOMA
  SOUTHEASTERN NOWATA COUNTY IN NORTHEAST OKLAHOMA
  ROGERS COUNTY IN NORTHEAST OKLAHOMA
  NORTHERN TULSA COUNTY IN NORTHEAST OKLAHOMA
  WASHINGTON COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 715 AM CDT

* AT 630 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES NORTHEAST
  OF SPERRY...MOVING EAST AT 40 MPH.

  STORM HAZARDS INCLUDE...
  QUARTER SIZE HAIL...
  WIND GUSTS TO 60 MPH...

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  OWASSO...RAMONA...VERA...COLLINSVILLE...OOLOGAH...TALALA...
  CLAREMORE...WATOVA...FOYIL...NEW ALLUWE...ADAIR AND CHELSEA.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 246 AND 274.

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 3671 9533 3636 9519 3619 9599 3651 9600
      3668 9551 3662 9554 3671 9542
TIME...MOT...LOC 1132Z 253DEG 34KT 3637 9592

$$

2 follow-up statements

615 
WWUS54 KTSA 141151
SVSTSA

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

OKC035-105-143-147-141201-
/O.CAN.KTSA.SV.W.0045.000000T0000Z-120414T1215Z/
CRAIG OK-NOWATA OK-TULSA OK-WASHINGTON OK-
651 AM CDT SAT APR 14 2012

...THE SEVERE THUNDERSTORM WARNING FOR WASHINGTON...NORTHERN TULSA...
SOUTHEASTERN NOWATA AND SOUTHWESTERN CRAIG COUNTIES IS CANCELLED...

LAT...LON 3651 9532 3651 9529 3635 9522 3626 9563
      3626 9579 3644 9580 3653 9533
TIME...MOT...LOC 1151Z 267DEG 39KT 3635 9568

$$

OKC097-131-141215-
/O.CON.KTSA.SV.W.0045.000000T0000Z-120414T1215Z/
MAYES OK-ROGERS OK-
651 AM CDT SAT APR 14 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 AM CDT FOR
CENTRAL ROGERS AND NORTHWESTERN MAYES COUNTIES...

AT 647 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES SOUTH OF
OOLOGAH...MOVING EAST AT 45 MPH.

STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
WIND GUSTS TO 60 MPH...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
CLAREMORE...FOYIL...BUSHYHEAD AND ADAIR.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 245 AND 271.

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 3651 9532 3651 9529 3635 9522 3626 9563
      3626 9579 3644 9580 3653 9533
TIME...MOT...LOC 1151Z 267DEG 39KT 3635 9568

$$

444 
WWUS54 KTSA 141214
SVSTSA

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

OKC097-131-141224-
/O.EXP.KTSA.SV.W.0045.000000T0000Z-120414T1215Z/
MAYES OK-ROGERS OK-
714 AM CDT SAT APR 14 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL ROGERS AND
NORTHWESTERN MAYES COUNTIES EXPIRES AT 715 AM CDT...

THE THUNDERSTORM HAS WEAKENED BELOW SEVERE LIMITS...THEREFORE THE
SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE.

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL 9 AM.

LAT...LON 3651 9532 3651 9529 3635 9522 3626 9563
      3626 9579 3644 9580 3653 9533
TIME...MOT...LOC 1214Z 267DEG 39KT 3636 9538

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 13, 8:44 PM CDT	Special Weather Statement	TSA	Osage	31 min
Apr 13, 9:16 PM CDT	Special Weather Statement	TSA	Osage	29 min
Apr 13, 9:42 PM CDT	Special Weather Statement	TSA	Osage	33 min
Apr 14, 12:35 AM CDT	Special Weather Statement	TSA	Creek	25 min
Apr 14, 12:40 AM CDT	Special Weather Statement	TSA	Pawnee	35 min
Apr 14, 1:18 AM CDT	Special Weather Statement	TSA	Pawnee	57 min
Apr 14, 2:09 AM CDT	Special Weather Statement	TSA	Osage, Pawnee	66 min
Apr 14, 3:26 AM CDT	Special Weather Statement	TSA	Craig, Nowata	64 min
Apr 14, 3:39 AM CDT	Tornado Warning	TSA	Pawnee	17 min
Apr 14, 3:52 AM CDT	Special Weather Statement	TSA	Washington	53 min
Apr 14, 4:08 AM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Rogers, Washington	52 min
Apr 14, 4:17 AM CDT	Special Weather Statement	TSA	Creek	28 min
Apr 14, 4:28 AM CDT	Severe Thunderstorm Warning	TSA	Creek	47 min
Apr 14, 4:54 AM CDT	Areal Flood Advisory	TSA	Nowata, Osage, Washington	111 min
Apr 14, 5:00 AM CDT	Special Weather Statement	TSA	Craig	45 min
Apr 14, 5:09 AM CDT	Special Weather Statement	TSA	Pawnee	36 min
Apr 14, 5:12 AM CDT	Special Weather Statement	TSA	Creek	33 min
Apr 14, 5:19 AM CDT	Special Weather Statement	TSA	Ottawa	26 min
Apr 14, 5:41 AM CDT	Special Weather Statement	TSA	Pawnee	49 min
Apr 14, 6:23 AM CDT	Special Weather Statement	TSA	Rogers	52 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2012 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.