Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 33, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 7, 2012, 9:54 AM CDT for Osage County, Washington County, Oklahoma. It was in force for 66 min. 2 reports 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 7, 2012, 9:54 AM CDT (14:54 UTC)
- Expired
- Apr 7, 2012, 11:00 AM CDT
- In force
- 66 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
Counties Osage County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 89 km from the middle of the area, began a volume at 14:57 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 7, 10:06 AM CDT | HAIL 1 | 1 N Bigheart, OK | DIME TO NICKEL SIZE HAIL COVERED ENTIRE GROUND...HAILED APPROXIMATELY 20 MINUTES. |
| Apr 7, 10:30 AM CDT | HAIL 0.75 | Bartlesville, OK | TIME ESTIMATED FROM RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lamont, OK (KLMN), launched 12:00Z, 2.9 hours before the alert went out and 120 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
- 151 J/kg
- Mixed-layer CIN
- -257 J/kg
- Mixed-layer LCL
- 1270 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
024
WUUS54 KTSA 071454
SVRTSA
OKC113-147-071600-
/O.NEW.KTSA.SV.W.0033.120407T1454Z-120407T1600Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
954 AM CDT SAT APR 7 2012
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
OSAGE COUNTY IN NORTHEAST OKLAHOMA
WASHINGTON COUNTY IN NORTHEAST OKLAHOMA
* UNTIL 1100 AM CDT
* AT 953 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES SOUTHWEST OF HULAH TO 3 MILES NORTH OF
PEARSONIA TO 4 MILES EAST OF BURBANK...MOVING SOUTHEAST AT 35 MPH.
STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
WIND GUSTS TO 60 MPH...
* SOME LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
BIGHEART...PEARSONIA...HULAH...COPAN...DEWEY...PAWHUSKA...OSAGE
HILLS STATE PARK...BARTLESVILLE...OKESA...WYNONA...BARNSDALL...
OCHELATA...AVANT AND RAMONA.
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 9585 3698 9582 3661 9582 3637 9607
3665 9684 3693 9658 3701 9640
TIME...MOT...LOC 1454Z 295DEG 32KT 3688 9611 3684 9645
3667 9665
$$5 follow-up statements
201
WWUS54 KTSA 071503
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1003 AM CDT SAT APR 7 2012
OKC113-147-071600-
/O.CON.KTSA.SV.W.0033.000000T0000Z-120407T1600Z/
OSAGE OK-WASHINGTON OK-
1003 AM CDT SAT APR 7 2012
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 AM CDT
FOR WASHINGTON AND NORTHERN OSAGE COUNTIES...
AT 1001 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM WAH SHA SHE STATE PARK TO PEARSONIA TO BURBANK...
MOVING SOUTHEAST AT 35 MPH.
STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
WIND GUSTS TO 60 MPH...
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...HULAH...
COPAN...PAWHUSKA...OSAGE HILLS STATE PARK...DEWEY...OKESA...
BARTLESVILLE...NELAGONEY...PERSHING...TALLANT...BARNSDALL AND
OCHELATA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
&&
LAT...LON 3700 9585 3698 9582 3661 9582 3655 9618
3665 9684 3693 9658 3701 9640
TIME...MOT...LOC 1503Z 295DEG 32KT 3688 9614 3680 9638
3665 9664
$$360
WWUS54 KTSA 071523
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1023 AM CDT SAT APR 7 2012
OKC113-147-071600-
/O.CON.KTSA.SV.W.0033.000000T0000Z-120407T1600Z/
OSAGE OK-WASHINGTON OK-
1023 AM CDT SAT APR 7 2012
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 AM CDT
FOR WASHINGTON AND NORTHERN OSAGE COUNTIES...
AT 1023 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM HULAH TO TALLANT...MOVING SOUTHEAST AT 35 MPH.
STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
WIND GUSTS TO 60 MPH...
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
BARNSDALL...COPAN...BARTLESVILLE...DEWEY AND OCHELATA.
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 3675 9672 3687 9642 3696 9619 3700 9585
3698 9582 3661 9582 3655 9618 3665 9684
3667 9682
TIME...MOT...LOC 1524Z 295DEG 32KT 3690 9598 3662 9613
$$136 WWUS54 KTSA 071530 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 1030 AM CDT SAT APR 7 2012 OKC113-147-071600- /O.CON.KTSA.SV.W.0033.000000T0000Z-120407T1600Z/ OSAGE OK-WASHINGTON OK- 1030 AM CDT SAT APR 7 2012 ...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 AM CDT FOR WASHINGTON AND EASTERN OSAGE COUNTIES... AT 1027 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE EXTENDING FROM DEWEY TO OKESA...MOVING SOUTHEAST AT 35 MPH. STORM HAZARDS INCLUDE... QUARTER SIZE HAIL... WIND GUSTS TO 60 MPH... SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...OCHELATA. PRECAUTIONARY/PREPAREDNESS ACTIONS... PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. && LAT...LON 3655 9619 3683 9615 3691 9582 3661 9582 TIME...MOT...LOC 1530Z 295DEG 32KT 3679 9591 3664 9607 $$
300 WWUS54 KTSA 071538 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 1038 AM CDT SAT APR 7 2012 OKC113-147-071600- /O.CON.KTSA.SV.W.0033.000000T0000Z-120407T1600Z/ OSAGE OK-WASHINGTON OK- 1038 AM CDT SAT APR 7 2012 ...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 AM CDT FOR WASHINGTON AND EASTERN OSAGE COUNTIES... AT 1036 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE EXTENDING FROM 6 MILES NORTHEAST OF BARTLESVILLE TO 7 MILES SOUTH OF BARTLESVILLE...MOVING SOUTHEAST AT 35 MPH. STORM HAZARDS INCLUDE... QUARTER SIZE HAIL... 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 3661 9606 3675 9603 3685 9582 3661 9582 TIME...MOT...LOC 1539Z 295DEG 32KT 3678 9586 3664 9599 $$
568 WWUS54 KTSA 071554 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 1054 AM CDT SAT APR 7 2012 OKC113-147-071603- /O.EXP.KTSA.SV.W.0033.000000T0000Z-120407T1600Z/ OSAGE OK-WASHINGTON OK- 1054 AM CDT SAT APR 7 2012 ...THE SEVERE THUNDERSTORM WARNING FOR WASHINGTON AND EASTERN OSAGE COUNTIES EXPIRES AT 1100 AM CDT... THE THUNDERSTORM IS MOVING OUT OF THE WARNED AREA AND HAS WEAKENED BELOW SEVERE LIMITS...THEREFORE THE SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE. GUSTY WINDS...SMALL HAIL AND HEAVY RAIN WILL STILL BE LIKELY WITH THIS STORM. TO REPORT PREVIOUS HAIL OR WIND DAMAGE...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN TULSA. LAT...LON 3661 9606 3675 9603 3685 9582 3661 9582 TIME...MOT...LOC 1553Z 295DEG 32KT 3673 9572 3659 9585 $$
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 7:37 AM CDT | Special Weather Statement | TSA | Osage | 23 min |
| Apr 7, 8:37 AM CDT | Special Weather Statement | TSA | Osage | 23 min |
| Apr 7, 8:52 AM CDT | Special Weather Statement | TSA | Osage | 38 min |
| Apr 7, 9:40 AM CDT | Special Weather Statement | TSA | Osage | 35 min |
| Apr 7, 10:37 AM CDT | Special Weather Statement | TSA | Washington | 38 min |
| Apr 7, 10:45 AM CDT | Areal Flood Advisory | TSA | Nowata, Osage, Washington | 2 hr |
| Apr 7, 11:04 AM CDT | Special Weather Statement | TSA | Mayes, Rogers | 41 min |
| Apr 7, 5:13 PM CDT | Special Weather Statement | TSA | Wagoner | 47 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.