Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 41, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 13, 2012, 3:45 PM CDT for Craig County, Nowata County, Washington County, Oklahoma. It was in force for 45 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 13, 2012, 3:45 PM CDT (20:45 UTC)
- Expired
- Apr 13, 2012, 4:30 PM CDT
- In force
- 45 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
Counties Craig County, OK, Nowata County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 78 km from the middle of the area, began a volume at 20:45 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 13, 3:57 PM CDT | HAIL 0.88 | Lenapah, OK |
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 13, 1:28 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 8.8 hours before the alert went out and 161 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 582 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 606 m²/s²
- 0-3 km storm-relative helicity
- 711 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.7
The text
As transmitted, in the capitals the NWS used until 2016.
507
WUUS54 KTSA 132045
SVRTSA
OKC035-105-147-132130-
/O.NEW.KTSA.SV.W.0041.120413T2045Z-120413T2130Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
345 PM CDT FRI APR 13 2012
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN CRAIG COUNTY IN NORTHEAST OKLAHOMA
NOWATA COUNTY IN NORTHEAST OKLAHOMA
WASHINGTON COUNTY IN NORTHEAST OKLAHOMA
* UNTIL 430 PM CDT
* AT 341 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 9 MILES WEST OF
DELAWARE...MOVING NORTHEAST AT 30 MPH.
STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
WIND GUSTS TO 60 MPH...
* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
DELAWARE...LENAPAH AND SOUTH COFFEYVILLE.
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 3700 9569 3700 9529 3677 9529 3668 9581
3681 9591
TIME...MOT...LOC 2045Z 230DEG 28KT 3677 9577
$$4 follow-up statements
305
WWUS54 KTSA 132058
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
358 PM CDT FRI APR 13 2012
OKC147-132107-
/O.CAN.KTSA.SV.W.0041.000000T0000Z-120413T2130Z/
WASHINGTON OK-
358 PM CDT FRI APR 13 2012
...THE SEVERE THUNDERSTORM WARNING FOR WASHINGTON COUNTY IS
CANCELLED...
LAT...LON 3677 9529 3676 9576 3683 9582 3690 9581
3700 9569 3700 9529
TIME...MOT...LOC 2057Z 230DEG 28KT 3683 9568
$$
OKC035-105-132130-
/O.CON.KTSA.SV.W.0041.000000T0000Z-120413T2130Z/
CRAIG OK-NOWATA OK-
358 PM CDT FRI APR 13 2012
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR
NORTHERN NOWATA AND NORTHWESTERN CRAIG COUNTIES...
AT 353 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR DELAWARE...
MOVING NORTHEAST AT 30 MPH.
STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
WIND GUSTS TO 60 MPH...
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...LENAPAH...
SOUTH COFFEYVILLE...CENTRALIA AND CENTRAILIA.
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 3677 9529 3676 9576 3683 9582 3690 9581
3700 9569 3700 9529
TIME...MOT...LOC 2057Z 230DEG 28KT 3683 9568
$$841
WWUS54 KTSA 132115
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
415 PM CDT FRI APR 13 2012
OKC035-105-132130-
/O.CON.KTSA.SV.W.0041.000000T0000Z-120413T2130Z/
CRAIG OK-NOWATA OK-
415 PM CDT FRI APR 13 2012
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR
NORTHEASTERN NOWATA AND NORTHWESTERN CRAIG COUNTIES...
AT 411 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES SOUTH OF
SOUTH COFFEYVILLE...MOVING NORTHEAST AT 30 MPH.
STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
WIND GUSTS TO 60 MPH...
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...CENTRALIA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
&&
LAT...LON 3681 9529 3676 9555 3691 9569 3700 9569
3700 9529
TIME...MOT...LOC 2115Z 230DEG 28KT 3692 9554
$$753
WWUS54 KTSA 132119
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
419 PM CDT FRI APR 13 2012
OKC035-105-132130-
/O.CON.KTSA.SV.W.0041.000000T0000Z-120413T2130Z/
CRAIG OK-NOWATA OK-
419 PM CDT FRI APR 13 2012
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR
NORTHEASTERN NOWATA AND NORTHWESTERN CRAIG COUNTIES...
AT 415 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER NORTHERN
NOWATA COUNTY...MOVING NORTHEAST AT 30 MPH.
STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
WIND GUSTS TO 60 MPH...
THIS STORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS.
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 3685 9529 3681 9551 3690 9557 3700 9558
3700 9529
TIME...MOT...LOC 2119Z 230DEG 28KT 3694 9551
$$189
WWUS54 KTSA 132126
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
426 PM CDT FRI APR 13 2012
OKC035-105-132137-
/O.EXP.KTSA.SV.W.0041.000000T0000Z-120413T2130Z/
CRAIG OK-NOWATA OK-
426 PM CDT FRI APR 13 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NOWATA AND
NORTHWESTERN CRAIG COUNTIES EXPIRES AT 430 PM CDT...
THE THUNDERSTORM HAS WEAKENED BELOW SEVERE LIMITS...THEREFORE THE
SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE.
GUSTY WINDS...SMALL HAIL AND HEAVY RAIN WILL STILL BE POSSIBLE WITH
THIS STORM.
LAT...LON 3685 9529 3681 9551 3690 9557 3700 9558
3700 9529
TIME...MOT...LOC 2127Z 230DEG 28KT 3698 9545
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 13, 3:17 PM CDT | Special Weather Statement | TSA | Washington | 28 min |
| Apr 13, 4:24 PM CDT | Special Weather Statement | TSA | Nowata | 36 min |
| Apr 13, 4:38 PM CDT | Special Weather Statement | TSA | Craig | 37 min |
| Apr 13, 5:05 PM CDT | Special Weather Statement | TSA | Washington | 25 min |
| Apr 13, 5:20 PM CDT | Special Weather Statement | TSA | Pawnee | 25 min |
| Apr 13, 5:30 PM CDT | Severe Thunderstorm Warning | TSA | Ottawa | 19 min |
| Apr 13, 6:01 PM CDT | Special Weather Statement | TSA | Osage | 29 min |
| Apr 13, 6:18 PM CDT | Special Weather Statement | TSA | Creek | 27 min |
| Apr 13, 6:55 PM CDT | Special Weather Statement | TSA | Creek | 35 min |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.