Alert archive / Oklahoma / Tornado Warnings in 1996
Tornado Warning 20, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at Apr 21, 1996, 10:05 PM CDT for Haskell County, Oklahoma. It was in force for 40 min. 4 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 21, 1996, 10:05 PM CDT (03:05 UTC)
- Expired
- Apr 21, 1996, 10:45 PM CDT
- In force
- 40 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Haskell County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 21, 10:07 PM CDT | Thunderstorm Wind | Stigler, OK | |
| Apr 21, 10:07 PM CDT | Hail 1.75 | Stigler, OK | |
| Apr 21, 10:15 PM CDT | Thunderstorm Wind 55 | Stigler, OK | |
| Apr 21, 10:30 PM CDT | Thunderstorm Wind | Keota, OK |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 3.1 hours before the alert went out and 207 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
- 392 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 1442 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 295 m²/s²
- 0-3 km storm-relative helicity
- 484 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 220306 TORTUL OKC061-220345- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TULSA OK 1005 PM CDT SUN APR 21 1996 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 1045 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST OKLAHOMA ...HASKELL COUNTY AT 1003 PM RADAR INDICATED A TORNADO 5 MILES SOUTHWEST OF STIGLER. THE TORNADO WAS MOVING EAST NORTHEAST AT 25 MPH. STIGLER AND KEOTA ARE IN THE PATH OF THE TORNADO. IF YOU ARE IN THESE AREAS TAKE SHELTER NOW! THIS IS A DANGEROUS STORM SITUATION. ACT QUICKLY. IF YOU ARE IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF AVAILABLE. OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE. STAY AWAY FROM OUTSIDE WALLS AND AVOID WINDOWS. ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING OR GET IN A GROUND DEPRESSION. KEEP TUNED TO THIS STATION FOR THE LATEST WEATHER BULLETINS. N
What forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Tulsa, OK wrote its last area forecast discussion before this tornado warning went out at Apr 21, 9:21 PM CDT, 44 minutes earlier.
Area forecast discussion, Apr 21, 9:21 PM CDT, 44 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 920 PM CDT SUN APR 21 1996 WATER VAPOR SHOWS A SHORTWAVE MOVING SLOWLY EAST ACROSS CENTRAL KANSAS...WESTERN OKLAHOMA AND INTO WEST TEXAS. MEANWHILE...SURFACE MAPS SHOW A COLD FRONT FROM JUST WEST OF A TOP-ICT-GAG-DHT LINE WITH DEW POINTS BETWEEN 60 TO 65 TO ITS SOUTHEAST ACROSS MUCH OF OKLAHOMA AND INTO NORTHWEST ARKANSAS. MOISTURE AT 8H SHOULD ALSO BE PLENTIFUL WITH 12C DEW POINTS AT FTW AND SHV. KTLX AND KINX 88- D'S SHOW SCT STRONG TRW ACROSS THE REGION AND EXPECT THIS WILL CONTINUE UNTIL THE COLD FRONT PASSES LATER TONIGHT AND TOMORROW MORNING. THINK FLASH FLOOD THREAT IS MARGINAL BUT WILL KEEP IT WITH ALL THE STORMS AROUND AND SOME STORMS HAVING THE POTENTIAL TO PRODUCE A QUICK INCH AND A HALF OR TWO INCHES ON TOP OF PLACES WHICH MAY HAVE ALREADY HAD STORMS. THE THREAT OF FLASH FLOODING WILL END AS THE COLD FRONT PASSES WITH ONLY LINGERING PATCHES OF LIGHT RAIN REMAINING. RAIN SHOULD END FROM THE NORTHWEST TOMORROW AS THE COLD FRONT PUSHES FURTHER SOUTH AND EAST AWAY FROM THE AREA. .TUL... OK...FLASH FLOOD WATCH ZNS 54>76 TONIGHT. AR...FLASH FLOOD WATCH ZNS 1/2/10/11/19/29 TONIGHT. ABBAS
In the hours before
Local storm report, Apr 21, 4:21 PM CDT, 5 hours 44 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
419 PM CDT SUN APR 21 1996
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0334 PM 6 NW PRYOR OK 1.00 INCH HAIL
04/21/96 MAYES
0408 PM 6 S VINITA OK 1.00 INCH HAIL
04/21/96 CRAIG
0418 PM VINITA OK .75 INCH HAIL
04/21/96 CRAIGLocal storm report, Apr 21, 4:27 PM CDT, 5 hours 38 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
426 PM CDT SUN APR 21 1996
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0424 PM BIG CABIN OK 1.00 INCH HAIL
04/21/96 CRAIGLocal storm report, Apr 21, 5:00 PM CDT, 5 hours 5 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
458 PM CDT SUN APR 21 1996
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0446 PM 10 N PAWHUSKA X OK 0.88 INCH HAIL
04/21/96 OSAGE
0448 PM FAIRLAND OK 1.00 INCH HAIL
04/21/96 OTTAWALocal storm report, Apr 21, 7:30 PM CDT, 2 hours 35 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
730 PM CDT SUN APR 21 1996
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0728 PM 7 W WELCH ( OK 1.75 INCH HAIL
04/21/96 CRAIGSpecial weather statement, Apr 21, 9:51 PM CDT, 14 minutes before
OKZ054>076-ARZ001-002-010-011-019-029-221245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 950 PM CDT SUN APR 21 1996 ...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR MUCH OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS TONIGHT... A FLASH FLOOD WATCH REMAINS IN EFFECT FOR THE FOLLOWING EASTERN OKLAHOMA COUNTIES TONIGHT... OSAGE...WASHINGTON...PAWNEE...NOWATA...CRAIG...OTTAWA... DELAWARE...MAYES...ROGERS...TULSA...CREEK....OKFUSKEE.... OKMULGEE...MUSKOGEE...MCINTOSH...WAGONER...ADAIR...CHEROKEE... HASKELL...LATIMER...LE FLORE...PITTSBURG AND SEQUOYAH. THE FLASH FLOOD WATCH ALSO INCLUDES THE FOLLOWING NORTHWEST ARKANSAS COUNTIES... BENTON...CARROLL...CRAWFORD...MADISON...SEBASTIAN AND WASHINGTON. A FLASH FLOOD WATCH MEANS THAT THE POTENTIAL EXISTS FOR FLASH FLOODING. SCATTERED THUNDERSTORMS HAVE OCCURRED OVER PARTS OF EASTERN OKLAHOMA THIS AFTERNOON AND EVENING AND SHOULD SPREAD INTO NORTHWEST ARKANSAS DURING THE NIGHT. WITH AN UPPER ATMOSPHERIC DISTURBANCE MOVING INTO THE AREA FROM THE WEST AND A COLD FRONT APPROACHING THE AREA FROM THE NORTHWEST...THUNDERSTORMS SHOULD CONTINUE TO DEVELOP OVER AND MOVE ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS TONIGHT. THESE THUNDERSTORMS WILL FEED UPON AIR THAT IS RICH IN MOISTURE AND WILL BE CAPABLE OF PRODUCING LOCALLY HEAVY RAINS. THUS...FLASH FLOODING WILL BE POSSIBLE...ESPECIALLY IN AREAS WHICH HAVE ALREADY RECEIVED HEAVY RAINS EARLIER IN THE DAY. PERSONS IN THE WATCH AREA NEED TO MAKE PLANS FOR THE POSSIBILITY OF FLASH FLOODING TONIGHT...PARTICULARLY IF YOU LIVE IN A FLOOD PRONE AREA. IF YOU SHOULD ENCOUNTER FLOODED ROADWAYS...PLEASE DO NOT DRIVE INTO THE WATER AS THE ROAD UNDERNEAT(H MAY HAVE BEEN WASHED OUT. KEEP TUNED TO NOAA WEATHER RADIO OR THE LOCAL MEDIA FOR POSSIBLE FLASH FLOOD WARNINGS.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 7:05 PM CDT | Tornado Warning | TSA | Craig, Nowata | 40 min |
| Apr 21, 7:09 PM CDT | Tornado Warning | TSA | Washington | 36 min |
| Apr 21, 7:22 PM CDT | Tornado Warning | TSA | Nowata | 53 min |
| Apr 21, 7:32 PM CDT | Tornado Warning | TSA | Craig, Ottawa | 43 min |
| Apr 21, 7:43 PM CDT | Tornado Warning | TSA | Nowata | 32 min |
| Apr 21, 7:54 PM CDT | Severe Thunderstorm Warning | TSA | Craig | 21 min |
| Apr 21, 8:08 PM CDT | Tornado Warning | TSA | Ottawa | 37 min |
| Apr 21, 8:20 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Pittsburg | 55 min |
| Apr 21, 8:57 PM CDT | Tornado Warning | TSA | McIntosh, Pittsburg | 48 min |
| Apr 21, 9:30 PM CDT | Tornado Warning | TSA | Haskell | 45 min |
| Apr 21, 9:34 PM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 41 min |
| Apr 21, 9:39 PM CDT | Tornado Warning | TSA | Pittsburg | 21 min |
| Apr 21, 10:15 PM CDT | Severe Thunderstorm Warning | TSA | Okmulgee | 45 min |
| Apr 21, 10:22 PM CDT | Tornado Warning | TSA | LeFlore, Sequoyah | 53 min |
| Apr 21, 10:25 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh | 50 min |
| Apr 21, 10:37 PM CDT | Flash Flood Warning | TSA | Cherokee | 3 hr |
| Apr 21, 11:17 PM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 43 min |
| Apr 21, 11:28 PM CDT | Severe Thunderstorm Warning | TSA | Rogers, Tulsa, Wagoner | 47 min |
| Apr 21, 11:40 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Okmulgee | 50 min |
| Apr 21, 11:44 PM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 46 min |
| Apr 22, 12:25 AM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Muskogee, Okmulgee | 50 min |
| Apr 22, 12:36 AM CDT | Tornado Warning | TSA | McIntosh | 39 min |
| Apr 22, 12:41 AM CDT | Severe Thunderstorm Warning | TSA | Cherokee, Wagoner | 49 min |
| Apr 22, 12:46 AM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 44 min |
| Apr 22, 12:55 AM CDT | Tornado Warning | TSA | Muskogee | 35 min |
| Apr 22, 12:59 AM CDT | Severe Thunderstorm Warning | TSA | Sequoyah | 46 min |
| Apr 22, 1:19 AM CDT | Tornado Warning | TSA | Sequoyah | 41 min |
| Apr 22, 1:24 AM CDT | Severe Thunderstorm Warning | TSA | Adair, Cherokee | 51 min |
| Apr 22, 1:28 AM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 32 min |
| Apr 22, 1:36 AM CDT | Severe Thunderstorm Warning | TSA | Haskell, Latimer | 54 min |
| Apr 22, 1:45 AM CDT | Tornado Warning | TSA | Latimer, Pittsburg | 45 min |
| Apr 22, 1:50 AM CDT | Tornado Warning | TSA | Adair | 40 min |
| Apr 22, 2:18 AM CDT | Flash Flood Warning | TSA | Latimer, Pittsburg | 3 hr |
| Apr 22, 2:22 AM CDT | Severe Thunderstorm Warning | TSA | Haskell, LeFlore | 53 min |
| Apr 22, 2:34 AM CDT | Flash Flood Warning | TSA | Haskell | 3 hr |
| Apr 22, 7:16 AM CDT | Flash Flood Warning | TSA | Latimer, Pittsburg | 119 min |
| Apr 22, 7:16 AM CDT | Flash Flood Warning | TSA | LeFlore | 119 min |
| Apr 22, 8:37 AM CDT | Flash Flood Warning | TSA | Haskell | 2 hr |
Nearby
Tornado Warnings in Oklahoma, 1996Every tornado warning in 1996Tornadoes in 1996
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.