Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 49, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 15, 2012, 6:22 AM CDT for 5 counties in Oklahoma. It was in force for 53 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 15, 2012, 6:22 AM CDT (11:22 UTC)
- Expired
- Apr 15, 2012, 7:15 AM CDT
- In force
- 53 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
Counties Craig County, OK, Mayes County, OK, Nowata County, OK, Ottawa County, OK, Rogers County, OK
The radar
The Tulsa radar (KINX), 81 km from the middle of the area, began a volume at 11:23 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 15, 6:43 AM CDT | TSTM WND DMG | 2 W Hollow, OK | 1 INCH TREE LIMBS DOWN AND UNANCHORED OUTHOUSE BLOWN OVER. TIME IS RADAR ESTIMATED. |
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 15, 1:37 AM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 11.4 hours before the alert went out and 109 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
- 532 J/kg
- Mixed-layer CIN
- -182 J/kg
- Mixed-layer LCL
- 1275 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 294 m²/s²
- 0-3 km storm-relative helicity
- 443 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 3.5
The text
As transmitted, in the capitals the NWS used until 2016.
634
WUUS54 KTSA 151122
SVRTSA
OKC035-097-105-115-131-151215-
/O.NEW.KTSA.SV.W.0049.120415T1122Z-120415T1215Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
622 AM CDT SUN APR 15 2012
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CRAIG COUNTY IN NORTHEAST OKLAHOMA
NORTHWESTERN MAYES COUNTY IN NORTHEAST OKLAHOMA
EASTERN NOWATA COUNTY IN NORTHEAST OKLAHOMA
OTTAWA COUNTY IN NORTHEAST OKLAHOMA
ROGERS COUNTY IN NORTHEAST OKLAHOMA
* UNTIL 715 AM CDT
* AT 619 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 21 MILES WEST OF WELCH TO 4 MILES NORTHWEST OF
VERDIGRIS...MOVING NORTHEAST AT 60 MPH.
STORM HAZARDS INCLUDE...
NICKLE SIZE HAIL...
WIND GUSTS TO 60 MPH...
* SOME LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
CLAREMORE...NEW ALLUWE...FOYIL...CHELSEA...WHITE OAK...BIG CABIN...
WELCH...VINITA...BLUEJACKET...AFTON...NARCISSA...COMMERCE...
MIAMI...PICHER...FAIRLAND AND QUAPAW.
THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 233 AND 324.
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.
TORNADOES CAN DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. TAKE COVER
ON THE LOWEST FLOOR IN AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 3699 9461 3686 9461 3667 9494 3667 9499
3664 9500 3616 9582 3701 9550
TIME...MOT...LOC 1122Z 234DEG 53KT 3699 9542 3631 9567
$$3 follow-up statements
350
WWUS54 KTSA 151136
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
636 AM CDT SUN APR 15 2012
OKC035-097-105-115-131-151215-
/O.CON.KTSA.SV.W.0049.000000T0000Z-120415T1215Z/
CRAIG OK-MAYES OK-NOWATA OK-OTTAWA OK-ROGERS OK-
636 AM CDT SUN APR 15 2012
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 AM CDT FOR
NORTHEASTERN ROGERS...NORTHWESTERN OTTAWA...SOUTHEASTERN NOWATA...
NORTHWESTERN MAYES AND CRAIG COUNTIES...
AT 633 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 7 MILES NORTHWEST OF HOLLOW TO FOYIL...MOVING
NORTHEAST AT 60 MPH.
STORM HAZARDS INCLUDE...
NICKLE SIZE HAIL...
WIND GUSTS TO 60 MPH...
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
CENTRALIA...CHELSEA...CENTRAILIA...HOLLOW...WHITE OAK...BIG CABIN...
PYRAMID CORNERS...WELCH...VINITA...BLUEJACKET...AFTON...NARCISSA...
COMMERCE...CARDIN...MIAMI...PICHER...QUAPAW AND OTTAWA.
THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 248 AND 319.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
TORNADOES CAN DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. TAKE COVER
ON THE LOWEST FLOOR IN AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 3701 9535 3699 9467 3684 9473 3640 9541
3628 9562
TIME...MOT...LOC 1135Z 231DEG 53KT 3699 9530 3640 9552
$$475
WWUS54 KTSA 151159
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
659 AM CDT SUN APR 15 2012
OKC105-131-151209-
/O.CAN.KTSA.SV.W.0049.000000T0000Z-120415T1215Z/
NOWATA OK-ROGERS OK-
659 AM CDT SUN APR 15 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ROGERS AND
SOUTHEASTERN NOWATA COUNTIES IS CANCELLED...
LAT...LON 3651 9537 3652 9533 3660 9533 3700 9513
3700 9512 3700 9488 3699 9487 3699 9483
3699 9474 3678 9483 3640 9541 3639 9543
TIME...MOT...LOC 1159Z 240DEG 35KT 3696 9507 3644 9533
$$
OKC035-097-115-151215-
/O.CON.KTSA.SV.W.0049.000000T0000Z-120415T1215Z/
CRAIG OK-MAYES OK-OTTAWA OK-
659 AM CDT SUN APR 15 2012
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 AM CDT FOR
WESTERN OTTAWA...NORTHWESTERN MAYES AND EASTERN CRAIG COUNTIES...
AT 657 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM WELCH TO 11 MILES SOUTHWEST OF BIG CABIN...MOVING
NORTHEAST AT 50 MPH.
STORM HAZARDS INCLUDE...
WIND GUSTS TO 60 MPH...
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...WELCH...
BIG CABIN...VINITA...BLUEJACKET...PICHER...CARDIN...QUAPAW...
NARCISSA...AFTON...COMMERCE AND MIAMI.
THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 260 AND 314.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
TORNADOES CAN DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. TAKE COVER
ON THE LOWEST FLOOR IN AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 3651 9537 3652 9533 3660 9533 3700 9513
3700 9512 3700 9488 3699 9487 3699 9483
3699 9474 3678 9483 3640 9541 3639 9543
TIME...MOT...LOC 1159Z 240DEG 43KT 3696 9507 3644 9533
$$451
WWUS54 KTSA 151216
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
716 AM CDT SUN APR 15 2012
OKC035-097-115-151226-
/O.EXP.KTSA.SV.W.0049.000000T0000Z-120415T1215Z/
CRAIG OK-MAYES OK-OTTAWA OK-
716 AM CDT SUN APR 15 2012
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN OTTAWA...NORTHWESTERN
MAYES AND EASTERN CRAIG 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 AND HEAVY RAIN WILL STILL BE POSSIBLE WITH THIS STORM.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 11 AM.
LAT...LON 3651 9537 3652 9533 3660 9533 3700 9513
3700 9512 3700 9488 3699 9487 3699 9483
3699 9474 3678 9483 3640 9541 3639 9543
TIME...MOT...LOC 1159Z 240DEG 43KT 3695 9507 3643 9533
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 12:40 AM CDT | Wind Advisory | TSA | Creek, Okfuskee, Okmulgee, Pawnee, Tulsa, Washington | 3 hr |
| Apr 15, 3:41 AM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 64 min |
| Apr 15, 4:43 AM CDT | Severe Thunderstorm Warning | TSA | Creek, Osage, Pawnee | 62 min |
| Apr 15, 5:05 AM CDT | Special Weather Statement | TSA | Creek | 55 min |
| Apr 15, 5:30 AM CDT | Severe Thunderstorm Warning | TSA | Creek, Nowata, Osage, Pawnee, Rogers, Tulsa and 1 more | 60 min |
| Apr 15, 5:47 AM CDT | Special Weather Statement | TSA | Okfuskee, Okmulgee, Rogers, Tulsa | 58 min |
| Apr 15, 5:51 AM CDT | Tornado Warning | TSA | Nowata, Osage, Rogers, Tulsa, Washington | 24 min |
| Apr 15, 6:41 AM CDT | Special Weather Statement | TSA | Mayes, Okmulgee, Wagoner | 64 min |
| Apr 15, 6:43 AM CDT | Special Weather Statement | TSA | McIntosh, Pittsburg | 62 min |
| Apr 15, 7:41 AM CDT | Special Weather Statement | TSA | Delaware | 34 min |
| Apr 15, 7:44 AM CDT | Special Weather Statement | TSA | McIntosh, Muskogee, Pittsburg, Wagoner | 31 min |
| Apr 15, 8:13 AM CDT | Special Weather Statement | TSA | Cherokee, Delaware, Muskogee | 62 min |
| Apr 15, 8:14 AM CDT | Special Weather Statement | TSA | Haskell, Latimer, Pittsburg, Pushmataha, Sequoyah | 61 min |
| Apr 15, 9:13 AM CDT | Severe Thunderstorm Warning | TSA | Adair, Cherokee, Muskogee | 62 min |
| Apr 15, 9:16 AM CDT | Tornado Warning | TSA | Adair, Cherokee | 29 min |
| Apr 15, 9:42 AM CDT | Tornado Warning | TSA | Adair | 33 min |
| Apr 15, 11:28 AM CDT | Special Weather Statement | TSA | LeFlore | 62 min |
| Apr 15, 12:42 PM CDT | River Flood Warning | TSA | Rogers, Tulsa | 7 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.