Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 222, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at May 24, 1998, 9:12 PM CDT for Nowata County, Oklahoma. It was in force for 63 min. 1 report 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
- May 24, 1998, 9:12 PM CDT (02:12 UTC)
- Expired
- May 24, 1998, 10:15 PM CDT
- In force
- 63 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Nowata County, OK
The radar
The Tulsa radar (KINX), 70 km from the middle of the area, began a volume at 02:16 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 |
|---|---|---|---|
| May 24, 9:35 PM CDT | Hail 0.88 | South Coffeyville, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 24, 8:15 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 2.2 hours before the alert went out and 162 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
- 895 J/kg
- Mixed-layer CIN
- -85 J/kg
- Mixed-layer LCL
- 1916 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 117 m²/s²
- 0-3 km storm-relative helicity
- 247 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.7
The text
As transmitted, in the capitals the NWS used until 2016.
314 WUUS54 KTSA 250214 RRA SVRTUL OKC105-250315- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 912 PM CDT SUN MAY 24 1998 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN NOWATA COUNTY IN NORTHEASTERN OKLAHOMA * UNTIL 1015 PM CDT * AT 909 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A SEVERE THUNDERSTORM 2 MILES NORTH OF WANN...MOVING EAST AT 20 MPH. * SOME LOCATIONS AFFECTED INCLUDE... SOUTH COFFEYVILLE HAIL TO THE SIZE OF QUARTERS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. A TORNADO WATCH IS ALSO IN EFFECT. TORNADOES CAN DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS. BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH. WHEN THUNDERSTORMS APPROACH...TAKE COVER INSIDE A STURDY BUILDING. STAY AWAY FROM WINDOWS. TO PROTECT YOURSELF FROM LIGHTNING STAY OFF THE PHONE AND DONT USE HAND HELD ELECTRICAL APPLIANCES. MOTORISTS SHOULD NEVER DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at May 24, 8:05 PM CDT, 1 hour 7 minutes earlier.
Area forecast discussion, May 24, 8:05 PM CDT, 1 hour 7 minutes before
FPUS3 KTUL 250108 AFDTUL EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 805 PM CDT SUN MAY 24 1998 QUICK UPDATE TO GET THINGS SQUARED AWAY BEFORE ROTATING STORMS MOVE IN. ATTM...BELIEVE MOST OF THE THREAT WILL BE NORTH OF PAWNEE TO TALEQUAH. NO NEED FOR DETAILS ON BASIS...LATE AFT LIS WERE -14 AND PROFILER HELICITIES WERE AROUND 200 M2/S2. TORNADOES ALREADY REPORTED ACROSS NC OK. EXPECT TORNADO THREAT TO CONTINUE INTO THE EVENING AS MID LEVEL FLOW OF 30-35KTS CONTINUES AND LLJ SLOWLY INTENSIFIES. FCSTID = 26 .TUL... OK...NONE. AR...NONE.
In the hours before
Special weather statement, May 24, 8:45 PM CDT, 27 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-251200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 845 PM CDT SUN MAY 24 1998 NUMEROUS SEVERE THUNDERSTORMS ARE EXPECTED TONIGHT ACROSS PARTS OF NORTHEAST OKLAHOMA...GENERALLY NORTH OF A PAWNEE TO TAHLEQUAH LINE. A FEW SEVERE THUNDERSTORMS ARE POSSIBLE AFTER MIDNIGHT ACROSS NORTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA. A WARM FRONT WAS LOCATED ACROSS EXTREME NORTHERN OKLAHOMA THIS EVENING. ALONG AND TO THE SOUTH OF THE FRONT...VERY HIGH AMOUNTS OF LOW LEVEL MOISTURE HAVE RESULTED IN VERY HIGH INSTABILITY. IN ADDITION...WINDS ALONG AND JUST SOUTH OF THE FRONT WERE FROM THE SOUTHEAST OR EAST RESULTING IN A VERTICAL WIND PROFILE FAVORABLE FOR THE DEVELOPMENT OF SUPERCELLS AND POSSIBLY TORNADOES. ACROSS NORTHEAST OKLAHOMA...THERE WILL BE A THREAT FOR SEVERE THUNDERSTORMS THROUGH THE EARLY MORNING HOURS. THE GREATEST THREAT OF TORNADIC ACTIVITY WILL BE BETWEEN 9 PM AND 1 AM TONIGHT MAINLY NORTH OF A PAWNEE TO TAHLEQUAH LINE. ACROSS NORTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA THERE WILL BE A CHANCE FOR SEVERE THUNDERSTORM DEVELOPMENT AFTER MIDNIGHT AS THE STORMS CONTINUE MOVING EAST AND SOUTHEAST. THE GREATEST THREAT IN THESE AREAS WILL BE LARGE HAIL AND STRONG WINDS...ALTHOUGH BRIEF TORNADOES MAY BE POSSIBLE ACROSS NORTHWEST ARKANSAS LATE TONIGHT. EMERGENCY MANAGEMENT AND STORM SPOTTER GROUPS ACROSS NORTHEAST OKLAHOMA SHOULD QUICKLY COMPLETE PREPARATIONS FOR SEVERE WEATHER AND SPOTTER ACTIVATION. ACTIVATION MAY BE REQUIRED ACROSS SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS AFTER MIDNIGHT.
Special weather statement, May 24, 8:45 PM CDT, 27 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-251200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 845 PM CDT SUN MAY 24 1998 NUMEROUS SEVERE THUNDERSTORMS ARE EXPECTED TONIGHT ACROSS PARTS OF NORTHEAST OKLAHOMA...GENERALLY NORTH OF A PAWNEE TO TAHLEQUAH LINE. A FEW SEVERE THUNDERSTORMS ARE POSSIBLE AFTER MIDNIGHT ACROSS NORTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA. A WARM FRONT WAS LOCATED ACROSS EXTREME NORTHERN OKLAHOMA THIS EVENING. ALONG AND TO THE SOUTH OF THE FRONT...VERY HIGH AMOUNTS OF LOW LEVEL MOISTURE HAVE RESULTED IN VERY HIGH INSTABILITY. IN ADDITION...WINDS ALONG AND JUST SOUTH OF THE FRONT WERE FROM THE SOUTHEAST OR EAST RESULTING IN A VERTICAL WIND PROFILE FAVORABLE FOR THE DEVELOPMENT OF SUPERCELLS AND POSSIBLY TORNADOES. ACROSS NORTHEAST OKLAHOMA...THERE WILL BE A THREAT FOR SEVERE THUNDERSTORMS THROUGH THE EARLY MORNING HOURS. THE GREATEST THREAT OF TORNADIC ACTIVITY WILL BE BETWEEN 9 PM AND 1 AM TONIGHT MAINLY NORTH OF A PAWNEE TO TAHLEQUAH LINE. ACROSS NORTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA THERE WILL BE A CHANCE FOR SEVERE THUNDERSTORM DEVELOPMENT AFTER MIDNIGHT AS THE STORMS CONTINUE MOVING EAST AND SOUTHEAST. THE GREATEST THREAT IN THESE AREAS WILL BE LARGE HAIL AND STRONG WINDS...ALTHOUGH BRIEF TORNADOES MAY BE POSSIBLE ACROSS NORTHWEST ARKANSAS LATE TONIGHT. EMERGENCY MANAGEMENT AND STORM SPOTTER GROUPS ACROSS NORTHEAST OKLAHOMA SHOULD QUICKLY COMPLETE PREPARATIONS FOR SEVERE WEATHER AND SPOTTER ACTIVATION. ACTIVATION MAY BE REQUIRED ACROSS SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS AFTER MIDNIGHT.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 24, 8:53 PM CDT | Tornado Warning | TSA | Osage | 52 min |
| May 24, 9:34 PM CDT | Tornado Warning | TSA | Nowata | 41 min |
| May 24, 9:40 PM CDT | Tornado Warning | TSA | Osage | 65 min |
| May 24, 9:53 PM CDT | Severe Thunderstorm Warning | TSA | Craig | 37 min |
| May 24, 10:43 PM CDT | Tornado Warning | TSA | Osage | 62 min |
| May 24, 10:57 PM CDT | Severe Thunderstorm Warning | TSA | Craig | 48 min |
| May 24, 11:25 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Washington | 50 min |
| May 24, 11:46 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 44 min |
| May 25, 12:13 AM CDT | Flash Flood Warning | TSA | Osage | 2 hr |
| May 25, 12:19 AM CDT | Severe Thunderstorm Warning | TSA | Craig | 41 min |
| May 25, 12:32 AM CDT | Severe Thunderstorm Warning | TSA | Osage | 43 min |
| May 25, 12:43 AM CDT | Severe Thunderstorm Warning | TSA | Delaware, Ottawa | 47 min |
| May 25, 1:12 AM CDT | Severe Thunderstorm Warning | TSA | Osage, Washington | 48 min |
| May 25, 1:31 AM CDT | Severe Thunderstorm Warning | TSA | Nowata, Rogers | 44 min |
| May 25, 2:25 AM CDT | Severe Thunderstorm Warning | TSA | Mayes | 50 min |
| May 25, 2:54 AM CDT | Severe Thunderstorm Warning | TSA | Delaware | 36 min |
| May 25, 4:10 AM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 50 min |
| May 25, 4:59 AM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 46 min |
| May 25, 6:01 AM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 44 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1998Every severe thunderstorm warning in 1998
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.