Alert archive / Oklahoma / Tornado Warnings in 1996
Tornado Warning 10, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at Apr 21, 1996, 6:51 PM CDT for Osage County, Oklahoma. It was in force for 54 min. 2 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, 6:51 PM CDT (23:51 UTC)
- Expired
- Apr 21, 1996, 7:45 PM CDT
- In force
- 54 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Osage County, OK
The radar
The Tulsa radar (KINX), 90 km from the middle of the area, began a volume at 23:52 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 21, 7:00 PM CDT | Tornado F1 | Barnsdall, OK | |
| Apr 21, 7:00 PM CDT | Hail 0.75 | Wynona, 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 12:00Z, 11.9 hours before the alert went out and 181 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
- 1941 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 267 m²/s²
- 0-3 km storm-relative helicity
- 464 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 212357 COR TORTUL OKC113-220045- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING...CORRECTED TOWNS IN PATH NATIONAL WEATHER SERVICE TULSA OK 651 PM CDT SUN APR 21 1996 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 745 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHEAST OKLAHOMA ...EASTERN OSAGE COUNTY AT 650 PM...RADAR SHOWED A POSSIBLE TORNADO 4 MILES SOUTHWEST OF WYNONA AND ALSO ANOTHER POSSIBLE TORNADO 3 MILES NORTHEAST OF WYNONA. BARNSDALL AND WYNONA ARE IN THE PATH OF THIS STORM. 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 BULL>ETINS.
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, 3:26 PM CDT, 3 hours 25 minutes earlier.
Area forecast discussion, Apr 21, 3:26 PM CDT, 3 hours 25 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 320 PM CDT SUN APR 21 1996 MID 60S DWPTS SURGED ALL THE WAY INTO NE OK THIS AFTERNOON WITH SCT SVR STORMS NOW EXTNDING FROM N OF TUL BACK TO THE SW INTO NW TX ALONG H85 MOIST AXIS. SVR WX AND TOR THREAT WILL CONT WELL INTO TONIGHT WITH SFC LOW STILL OUT IN TX PH AND FNT JUST INTO NW ARK. THREAT FOR VRY HVY RAINS WILL EXIST AS TRW CONTS TO TRAIN NE ALONG H85 MOIST AXIS. CUD SEE SOME 4-6 INCH AMTS...BUT DIFFICULT TO PINPOINT WHERE HEAVIEST RAINS WILL FALL AT THIS TIME. WILL ISSUE FFA FOR ALL BUT ZN77 FOR TONIGHT WITH 90-100% POPS AND MENTION SVR IN ALL ZNS. ETA SLOWEST IN DRYING AREA OUT MONDAY WITH H5 TROF AND VORT MAX ROUNDING BASE OF TROF YET TO MOVE THRU SRN PLAINS MONDAY. FNT SHUD PUSH INTO NE OK LATE TONIGHT AND ON INTO SE OK/NW ARK BY LATE MON MORN. WILL KEEP RW/TRW LIKELY IN SE ZNS AND WORD AS SCT RW IN NRN ZNS. CLDS WILL DECREASE LATE MONDAY FROM THE NW. THINGS WILL DRY OUT AS SFC HI BUILDS INTO FA MONDAY NIGHT/TUE WITH TMPS IN 60S TO MID 70S. TUL 053/062 043/068 048 +500 FSM 060/068 046/072 042 8810 MLC 058/066 047/073 048 87-0 BVO 049/062 040/070 049 9400 FYV 058/064 042/068 039 +910 IDB 061/072 050/074 045 8820 BYV 058/063 040/067 038 +910 .TUL... OK...FLASH FLOOD WATCH ZNS 54>76 TONIGHT. AR...FLASH FLOOD WATCH ZNS 1/2/10/11/19/29 TONIGHT.
In the hours before
Local storm report, Apr 21, 3:32 PM CDT, 3 hours 19 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
331 PM CDT SUN APR 21 1996
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0231 PM KEYSTONE LAKE SOUTHWEST OK 1.75 INCH HAIL
04/21/96 CREEK
0313 PM SKIATOOK OK .88 INCH HAIL
04/21/96 TULSALocal storm report, Apr 21, 4:14 PM CDT, 2 hours 37 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
412 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 CRAIGLocal storm report, Apr 21, 4:21 PM CDT, 2 hours 30 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, 2 hours 24 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, 1 hour 51 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 OTTAWAThe office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 1:51 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Pawnee | 54 min |
| Apr 21, 2:10 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Tulsa | 50 min |
| Apr 21, 2:28 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 47 min |
| Apr 21, 2:55 PM CDT | Severe Thunderstorm Warning | TSA | Rogers | 50 min |
| Apr 21, 3:00 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 45 min |
| Apr 21, 3:02 PM CDT | Severe Thunderstorm Warning | TSA | Washington | 28 min |
| Apr 21, 3:08 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 37 min |
| Apr 21, 3:13 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Washington | 47 min |
| Apr 21, 3:21 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Mayes | 54 min |
| Apr 21, 3:27 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 48 min |
| Apr 21, 3:36 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 39 min |
| Apr 21, 3:38 PM CDT | Severe Thunderstorm Warning | TSA | Rogers | 52 min |
| Apr 21, 4:08 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Delaware, Ottawa | 52 min |
| Apr 21, 4:31 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 44 min |
| Apr 21, 4:48 PM CDT | Severe Thunderstorm Warning | TSA | Ottawa | 42 min |
| Apr 21, 5:09 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 66 min |
| Apr 21, 5:40 PM CDT | Severe Thunderstorm Warning | TSA | Ottawa | 50 min |
| Apr 21, 6:05 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Washington | 40 min |
| Apr 21, 6:16 PM CDT | Severe Thunderstorm Warning | TSA | Nowata | 44 min |
| Apr 21, 6:39 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Washington | 51 min |
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; radar from the NEXRAD Level II archive.