Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 270, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jun 8, 1998, 10:30 AM CDT for Tulsa County, Oklahoma. It was in force for 45 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
- Jun 8, 1998, 10:30 AM CDT (15:30 UTC)
- Expired
- Jun 8, 1998, 11:15 AM CDT
- In force
- 45 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Tulsa County, OK
The radar
The Tulsa radar (KINX), 34 km from the middle of the area, began a volume at 15:32 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 |
|---|---|---|---|
| Jun 8, 10:33 AM CDT | Hail 0.75 | Bixby, 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
Lamont, OK (KLMN), launched 12:00Z, 3.5 hours before the alert went out and 149 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
- 146 J/kg
- Mixed-layer CIN
- -308 J/kg
- Mixed-layer LCL
- 793 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 171 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.5
The text
As transmitted, in the capitals the NWS used until 2016.
246 WUUS54 KTSA 081529 RRA SVRTUL OKC143-081615- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 1030 AM CDT MON JUN 8 1998 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... TULSA COUNTY IN NORTHEASTERN OKLAHOMA * UNTIL 1115 AM CDT * AT 1028 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A CLUSTER OF SEVERE THUNDERSTORMS FROM DOWNTOWN TULSA TO BIXBY... MOVING NORTHEAST AT 45 MPH. * SOME LOCATIONS AFFECTED INCLUDE... TULSA BIXBY BROKEN ARROW OWASSO HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 50 MPH CAN BE EXPECTED IN THE WARNED AREA. 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 Jun 8, 7:20 AM CDT, 3 hours 10 minutes earlier.
Area forecast discussion, Jun 8, 7:20 AM CDT, 3 hours 10 minutes before
FPUS3 KTUL 081222 AFDTUL EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 720 AM CDT MON JUN 8 1998 UPDATED TO REMOVE AFTERNOON WORDING FOR PRECIP TO ERN ZONES. ALSO BUMPED POPS UP AND WORDED FOR MAINLY IN THE MORNING OVER MOST WRN ZONES. SVR THREAT APPEARS LIMITED TO LARGE HAIL THIS MORNING. FCSTID = 26 TUL 80 68 88 71 / 60 20 20 20 FSM 80 65 89 67 / 50 30 20 20 MLC 80 68 87 70 / 60 30 20 20 BVO 80 67 89 69 / 60 20 10 20 FYV 78 65 84 65 / 50 30 20 20 IDB 85 66 87 67 / 50 30 20 20 BYV 78 63 83 64 / 50 30 20 20 MIO 80 67 87 68 / 60 30 20 20 MKO 80 69 87 70 / 60 30 20 20 F10 80 68 88 71 / 60 20 20 20 HHW 83 68 87 70 / 60 30 20 20 .TUL... OK...NONE. AR...NONE.
In the hours before
Special weather statement, Jun 8, 6:00 AM CDT, 4 hours 30 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-091200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 600 AM CDT MON JUN 8 1998 A FEW SEVERE THUNDERSTORMS ARE POSSIBLE TODAY AND TONIGHT IN NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS TO THE NORTH OF INTERSTATE 40. ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE IN SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS TO THE SOUTH OF INTERSTATE 40. STRONG SOUTHERLY LOW LEVEL WINDS WERE TRANSPORTING MOISTURE RAPIDLY NORTH INTO EASTERN OKLAHOMA AND NORTHWEST ARKANSAS EARLY THIS MORNING. AN UPPER LEVEL DISTURBANCE MOVING ACROSS KANSAS HAS RESULTED IN THE DEVELOPMENT OF SHOWERS AND THUNDERSTORMS ACROSS SOUTHERN KANSAS AND ALSO SOUTHERN OKLAHOMA EARLY THIS MORNING. SCATTERED SHOWERS AND THUNDERSTORMS WILL LIKELY DEVELOP AND INCREASE IN COVERAGE ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS EARLY THIS MORNING AS THE UPPER LEVEL DISTURBANCE CONTINUES MOVING EAST. SURFACE BASED INSTABILITY REMAINS EXTREMELY LIMITED EARLY THIS MORNING BUT ELEVATED INSTABILITY IS BECOMING FAIRLY STRONG. THUS SOME OF THE STORMS THIS MORNING MAY BE CAPABLE OF PRODUCING LARGE HAIL...MAINLY NORTH OF INTERSTATE 40. SURFACE BASED INSTABILITY WILL BECOME GREATER LATER THIS AFTERNOON AS TEMPERATURES WARM INTO THE UPPER 70S TO MID 80S AND DEWPOINTS RISE THROUGH THE 60S. A FEW THUNDERSTORMS MAY REDEVELOP LATE THIS AFTERNOON ESPECIALLY ALONG ANY RESIDUAL BOUNDARIES LEFT OVER BY THE MORNING SHOWERS AND STORMS. IF STORMS CAN DEVELOP LATE THIS AFTERNOON AND EARLY THIS EVENING...THEY WILL HAVE THE POTENTIAL TO PRODUCE LARGE HAIL... DAMAGING WINDS AND POSSIBLY EVEN TORNADOES GIVEN THE FAVORABLE WIND PROFILES. SINCE NO ACTUAL FRONTAL BOUNDARIES WILL BE IN THE AREA TONIGHT AND SINCE THE UPPER LEVEL DISTURBANCE WILL BE MOVING AWAY FROM THE AREA... THUNDERSTORMS WHICH DO DEVELOP LATE THIS AFTERNOON AND EVENING SHOULD WEAKEN AFTER 10 PM. EMERGENCY MANAGEMENT OFFICIALS AND STORM SPOTTER GROUPS IN EASTERN OKLAHOMA AND NORTHWEST ARKANSAS SHOULD MONITOR WEATHER CONDITIONS TODAY AND TONIGHT AND BE PREPARED FOR POSSIBLE ACTIVATION. AN UPDATED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AROUND 1 PM THIS AFTERNOON..
Special weather statement, Jun 8, 6:00 AM CDT, 4 hours 30 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-091200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 600 AM CDT MON JUN 8 1998 A FEW SEVERE THUNDERSTORMS ARE POSSIBLE TODAY AND TONIGHT IN NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS TO THE NORTH OF INTERSTATE 40. ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE IN SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS TO THE SOUTH OF INTERSTATE 40. STRONG SOUTHERLY LOW LEVEL WINDS WERE TRANSPORTING MOISTURE RAPIDLY NORTH INTO EASTERN OKLAHOMA AND NORTHWEST ARKANSAS EARLY THIS MORNING. AN UPPER LEVEL DISTURBANCE MOVING ACROSS KANSAS HAS RESULTED IN THE DEVELOPMENT OF SHOWERS AND THUNDERSTORMS ACROSS SOUTHERN KANSAS AND ALSO SOUTHERN OKLAHOMA EARLY THIS MORNING. SCATTERED SHOWERS AND THUNDERSTORMS WILL LIKELY DEVELOP AND INCREASE IN COVERAGE ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS EARLY THIS MORNING AS THE UPPER LEVEL DISTURBANCE CONTINUES MOVING EAST. SURFACE BASED INSTABILITY REMAINS EXTREMELY LIMITED EARLY THIS MORNING BUT ELEVATED INSTABILITY IS BECOMING FAIRLY STRONG. THUS SOME OF THE STORMS THIS MORNING MAY BE CAPABLE OF PRODUCING LARGE HAIL...MAINLY NORTH OF INTERSTATE 40. SURFACE BASED INSTABILITY WILL BECOME GREATER LATER THIS AFTERNOON AS TEMPERATURES WARM INTO THE UPPER 70S TO MID 80S AND DEWPOINTS RISE THROUGH THE 60S. A FEW THUNDERSTORMS MAY REDEVELOP LATE THIS AFTERNOON ESPECIALLY ALONG ANY RESIDUAL BOUNDARIES LEFT OVER BY THE MORNING SHOWERS AND STORMS. IF STORMS CAN DEVELOP LATE THIS AFTERNOON AND EARLY THIS EVENING...THEY WILL HAVE THE POTENTIAL TO PRODUCE LARGE HAIL... DAMAGING WINDS AND POSSIBLY EVEN TORNADOES GIVEN THE FAVORABLE WIND PROFILES. SINCE NO ACTUAL FRONTAL BOUNDARIES WILL BE IN THE AREA TONIGHT AND SINCE THE UPPER LEVEL DISTURBANCE WILL BE MOVING AWAY FROM THE AREA... THUNDERSTORMS WHICH DO DEVELOP LATE THIS AFTERNOON AND EVENING SHOULD WEAKEN AFTER 10 PM. EMERGENCY MANAGEMENT OFFICIALS AND STORM SPOTTER GROUPS IN EASTERN OKLAHOMA AND NORTHWEST ARKANSAS SHOULD MONITOR WEATHER CONDITIONS TODAY AND TONIGHT AND BE PREPARED FOR POSSIBLE ACTIVATION. AN UPDATED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AROUND 1 PM THIS AFTERNOON..
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 7, 9:46 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 29 min |
| Jun 8, 7:13 AM CDT | Severe Thunderstorm Warning | TSA | Mayes, Rogers, Wagoner | 47 min |
| Jun 8, 7:47 AM CDT | Severe Thunderstorm Warning | TSA | Rogers, Tulsa | 43 min |
| Jun 8, 9:49 AM CDT | Severe Thunderstorm Warning | TSA | Creek | 41 min |
| Jun 8, 9:58 AM CDT | Severe Thunderstorm Warning | TSA | Adair | 32 min |
| Jun 8, 10:22 AM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 38 min |
| Jun 8, 10:49 AM CDT | Severe Thunderstorm Warning | TSA | Wagoner | 41 min |
| Jun 8, 10:52 AM CDT | Severe Thunderstorm Warning | TSA | Muskogee, Sequoyah | 38 min |
| Jun 8, 10:52 AM CDT | Severe Thunderstorm Warning | TSA | McIntosh | 38 min |
| Jun 8, 5:20 PM CDT | Tornado Warning | TSA | Osage | 70 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.