Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 134, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 26, 1998, 7:26 AM CDT for Mayes County, Oklahoma. It was in force for 34 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
- Apr 26, 1998, 7:26 AM CDT (12:26 UTC)
- Expired
- Apr 26, 1998, 8:00 AM CDT
- In force
- 34 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Mayes County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 26, 7:30 AM CDT | Hail 1 | Adair, 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 |
|---|---|---|---|
| Apr 26, 4:30 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 0.4 hours before the alert went out and 144 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
- 67 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 792 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 155 m²/s²
- 0-3 km storm-relative helicity
- 130 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
717 WUUS54 KTSA 261227 RRA SVRTUL OKC097-261300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 726 AM CDT SUN APR 26 1998 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN MAYES COUNTY - NORTHEASTERN OKLAHOMA * UNTIL 800 AM CDT * AT 725 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A SEVERE THUNDERSTORM JUST NORTH OF FOYIL IN EASTERN ROGERS COUNTY... MOVING EAST NORTHEAST AT 25 MPH. * SOME LOCATIONS AFFECTED INCLUDE... ADAIR HAIL TO THE SIZE OF QUARTERS AND WIND GUSTS TO 60 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 Apr 26, 4:08 AM CDT, 3 hours 18 minutes earlier.
Area forecast discussion, Apr 26, 4:08 AM CDT, 3 hours 18 minutes before
FPUS3 KTUL 260912 AFDTUL EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 408 AM CDT SUN APR 26 1998 NO BIG SUPRISES THIS PACKAGE AS WE WILL CONT TRENDS OF PREVIOUS FCSTS. WILL UP POPS A BIT MOST PDS THRU MON WITH A FEW MINOR ADJUSTMENTS TO TEMPS. PATTERN DVLPG AS PREVIOUSLY ADVERTISED. MOST ACTIVITY THIS AM WL MOST LIKELY REMAIN CONFINED NR SFC BNDRY. ACTIVITY TO THE W ALREADY CRANKING UP...SO WL PROBABLY GET BUSY BEFORE LONG. SFC BNDRY ACRS FAR NWRN CORNER OF FCST AREA AT 12Z PROGGED TO SLOWLY SLIDE SEWD INTO CNTRL FCST ZONES BY THIS AFTN. ETA DEPICTS THIS BNDRY BECOMING MODIFIED BY AFTN AS BROAD ELY FLOW ENHANCES N OF SECONDARY WMFNTL BNDRY ALG RED RIVER. SECONDARY BNDRY DVLPS IN RESPONSE TO DEEPENING SFC REFLECTION OF MAIN SHORTWAVE WHICH WL APPROACH AREA BY EARLY EVENING. THIS SEEMS REASONABLE ATTM. WHILE THREAT WL EXIST AREA WIDE FOR SVR WX TODAY AND TONIGHT...MODELS AGREE THAT BEST POTNL OF SVR WX WL BE ACRS SERN FCST AREA WHERE BETTER DEPTH OF LLVL MSTR WL POOL UP AHD OF SEWD MOVG BNDRY. ALSO...SECONDARY WMFNTL BNDRY WL ENHANCE LIFT ACRS SERN ZONES AS MAIN SHORTWAVE WORKS IN. ETA ADVERTISING CAPES ARND 1500 J/KG LATE THIS AFTN AND EVENING ALG RED RIVER...IN AREA OF BEST LLVL HELICITY AND UPR DIVERGENCE. WE FEEL CONFIDENT ENOUGH ATTM TO GO AHD AND MENTION SVR FOR ALL AREAS TODAY...AND ACRS SERN FCST AREA TONIGHT. MAIN THREAT ACRS ERN OK/NWRN AR WL BE LARGE HAIL AND DAMAGING WINDS WITH SVR STORMS...HOWEVER LLVL PROFILES SUGGEST POTNL OF SUPERCELLULAR STORMS ACRS FAR SERN FCST AREA LATE THIS AFTERNOON AND EVENING. FOR MORE SPECIFIC INFORMATION ON THE SEVERE THUNDERSTORM THREAT TODAY AND TONIGHT...REFER TO AFOS HEADER OKCSPSTUL. AS UPR LOW WORKS INTO CNTRL OK BY MON...POTNL OF DRYSLOT ACRS SERN FCST AREA WITH SCT TSTMS POSSIBLE DUE TO COOLER TEMPS ALOFT. ISENTROPIC LIFT WL CONT N OF SFC FNTL BNDRY ALG KS/MO BORDERS AND WL ADVERTISE HIGH POPS THESE AREAS. POPS WL BE TAILORED HIR ALG KS/MO BORDERS...A BIT LOWER ALG RED RIVER. CHC OF RAIN TO CONT INTO TUE AS LOW BECOMES STACKED AND BASICALLY JUST SITS ACRS FCST AREA. FCSTID = 14 PRELIM NUMBERS... TUL 73 55 65 47 / 70 80 80 50 FSM 74 58 71 51 / 70 80 60 50 MLC 74 57 70 51 / 70 80 60 50 BVO 73 55 65 47 / 70 80 80 50 FYV 74 55 67 49 / 70 80 70 50 IDB 76 58 73 53 / 50 70 50 50 BYV 74 55 67 49 / 70 80 70 50 MIO 73 54 65 48 / 70 80 80 50 MKO 74 56 68 49 / 70 80 70 50 F10 74 56 68 49 / 70 80 70 50 HHW 76 58 73 53 / 50 70 50 50 .TUL... OK...NONE. AR...NONE.
In the hours before
Special weather statement, Apr 26, 5:30 AM CDT, 1 hour 56 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-271200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 530 AM CDT SUN APR 26 1998 A FEW SEVERE THUNDERSTORMS ARE EXPECTED TODAY AND TONIGHT OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. A COLD FRONT WILL SLOWLY SAG SOUTHWARD INTO NORTHEAST OKLAHOMA AND THE NORTHWEST CORNER OF ARKANSAS TODAY WITH A SURFACE LOW OVER THE TEXAS PANHANDLE MOVING EASTWARD ALONG THE RED RIVER. A STRONG UPPER LEVEL DISTURBANCE WILL ALSO MOVE NORTHEASTWARD INTO OKLAHOMA DURING THE DAY. THE AIRMASS OVER THE REGION HAS BECOME UNSTABLE AND THE CAP OF WARM AIR THAT WAS OVER THE AREA ON SATURDAY HAS WEAKENED CONSIDERABLY. SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP THIS MORNING ALONG AND NORTH OF THE FRONT SAGGING INTO NORTHEAST OKLAHOMA. THESE STORMS SHOULD GRADUALLY SINK SOUTHWARD DURING THE MORNING. BY AFTERNOON...ENOUGH HEATING IS EXPECTED SOUTH OF THE FRONT TO ALLOW THUNDERSTORM DEVELOPMENT IN SOUTHEAST OKLAHOMA. A WARM FRONTAL BOUNDARY IN NORTH TEXAS MAY ALSO HELP TO FOCUS THUNDERSTORMS LATE TODAY AND TONIGHT IN SOUTHEAST OKLAHOMA AND WESTCENTRAL ARKANSAS. THUNDERSTORMS WILL LIKELY CONTINUE THROUGH THE EVENING...ESPECIALLY IN SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS...WITH A LESSENING CHANCE FOR STRONG STORMS IN NORTHEAST OKLAHOMA...AS THE SURFACE FRONT SETTLES INTO SOUTHEAST OKLAHOMA. BY 6AM MONDAY MORNING...THE SURFACE LOW IS EXPECTED TO BE IN SOUTHEAST OKLAHOMA AND THE THREAT FOR SEVERE STORMS SHOULD BE LIMITED TO FAR SOUTHEAST OKLAHOMA AND WESTCENTRAL ARKANSAS. THE MAIN THREATS FROM THE STORMS WILL BE LARGE HAIL AND STRONG WINDS. BUT THE VERTICAL WIND PROFILE IN SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS MAY SUPPORT A FEW SUPERCELL THUNDERSTORMS THIS AFTERNOON AND OVERNIGHT. THE THUNDERSTORMS WILL ALSO PRODUCE SOME VERY HEAVY RAINFALL AMOUNTS THAT COULD CAUSE SOME FLOODING PROBLEMS OVERNIGHT. EMERGENCY MANAGERS AND STORM SPOTTER GROUPS IN EASTERN OKLAHOMA AND NORTHWEST ARKANSAS SHOULD BE PREPARED FOR ACTIVATION TODAY AND TONIGHT.
Special weather statement, Apr 26, 5:30 AM CDT, 1 hour 56 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-271200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 530 AM CDT SUN APR 26 1998 A FEW SEVERE THUNDERSTORMS ARE EXPECTED TODAY AND TONIGHT OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. A COLD FRONT WILL SLOWLY SAG SOUTHWARD INTO NORTHEAST OKLAHOMA AND THE NORTHWEST CORNER OF ARKANSAS TODAY WITH A SURFACE LOW OVER THE TEXAS PANHANDLE MOVING EASTWARD ALONG THE RED RIVER. A STRONG UPPER LEVEL DISTURBANCE WILL ALSO MOVE NORTHEASTWARD INTO OKLAHOMA DURING THE DAY. THE AIRMASS OVER THE REGION HAS BECOME UNSTABLE AND THE CAP OF WARM AIR THAT WAS OVER THE AREA ON SATURDAY HAS WEAKENED CONSIDERABLY. SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP THIS MORNING ALONG AND NORTH OF THE FRONT SAGGING INTO NORTHEAST OKLAHOMA. THESE STORMS SHOULD GRADUALLY SINK SOUTHWARD DURING THE MORNING. BY AFTERNOON...ENOUGH HEATING IS EXPECTED SOUTH OF THE FRONT TO ALLOW THUNDERSTORM DEVELOPMENT IN SOUTHEAST OKLAHOMA. A WARM FRONTAL BOUNDARY IN NORTH TEXAS MAY ALSO HELP TO FOCUS THUNDERSTORMS LATE TODAY AND TONIGHT IN SOUTHEAST OKLAHOMA AND WESTCENTRAL ARKANSAS. THUNDERSTORMS WILL LIKELY CONTINUE THROUGH THE EVENING...ESPECIALLY IN SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS...WITH A LESSENING CHANCE FOR STRONG STORMS IN NORTHEAST OKLAHOMA...AS THE SURFACE FRONT SETTLES INTO SOUTHEAST OKLAHOMA. BY 6AM MONDAY MORNING...THE SURFACE LOW IS EXPECTED TO BE IN SOUTHEAST OKLAHOMA AND THE THREAT FOR SEVERE STORMS SHOULD BE LIMITED TO FAR SOUTHEAST OKLAHOMA AND WESTCENTRAL ARKANSAS. THE MAIN THREATS FROM THE STORMS WILL BE LARGE HAIL AND STRONG WINDS. BUT THE VERTICAL WIND PROFILE IN SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS MAY SUPPORT A FEW SUPERCELL THUNDERSTORMS THIS AFTERNOON AND OVERNIGHT. THE THUNDERSTORMS WILL ALSO PRODUCE SOME VERY HEAVY RAINFALL AMOUNTS THAT COULD CAUSE SOME FLOODING PROBLEMS OVERNIGHT. EMERGENCY MANAGERS AND STORM SPOTTER GROUPS IN EASTERN OKLAHOMA AND NORTHWEST ARKANSAS SHOULD BE PREPARED FOR ACTIVATION TODAY AND TONIGHT.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 10:54 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 51 min |
| Apr 26, 5:21 AM CDT | Severe Thunderstorm Warning | TSA | Osage | 39 min |
| Apr 26, 6:00 AM CDT | Severe Thunderstorm Warning | TSA | Osage | 45 min |
| Apr 26, 6:09 AM CDT | Severe Thunderstorm Warning | TSA | Washington | 21 min |
| Apr 26, 6:27 AM CDT | Severe Thunderstorm Warning | TSA | Washington | 48 min |
| Apr 26, 6:35 AM CDT | Severe Thunderstorm Warning | TSA | Nowata | 55 min |
| Apr 26, 6:56 AM CDT | Severe Thunderstorm Warning | TSA | Rogers | 34 min |
| Apr 26, 7:04 AM CDT | Severe Thunderstorm Warning | TSA | Craig | 56 min |
| Apr 26, 7:39 AM CDT | Severe Thunderstorm Warning | TSA | Delaware | 36 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.