Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 374, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jun 30, 1998, 12:13 PM CDT for Tulsa County, Oklahoma. It was in force for 62 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 30, 1998, 12:13 PM CDT (17:13 UTC)
- Expired
- Jun 30, 1998, 1:15 PM CDT
- In force
- 62 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Tulsa County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 30, 12:15 PM CDT | Thunderstorm Wind | Tulsa, OK | Power lines were blown down near 11th Street and S. Sheridan. |
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, 5.2 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
- 1158 J/kg
- Mixed-layer CIN
- -316 J/kg
- Mixed-layer LCL
- 1699 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- -439 m²/s²
- 0-3 km storm-relative helicity
- -374 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
080 WUUS54 KTSA 301712 RRA SVRTUL OKC143-301815- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 1213 PM CDT TUE JUN 30 1998 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... TULSA COUNTY IN NORTHEASTERN OKLAHOMA * UNTIL 115 PM CDT * AT 12 08 PM...STORM SPOTTERS REPORTED AND RADAR DETECTED A SEVERE THUNDERSTORM AT 36TH STREET NORTH AND SHERIDAN IN NORTH TULSA... MOVING SOUTHEAST AT 25 MILES AN HOUR. * SOME LOCATIONS AFFECTED INCLUDE... TULSA BROKEN ARROW JENKS BIXBY HAIL TO THE SIZE OF DIMES AND WIND GUSTS TO 65 MPH CAN BE EXPECTED IN THE WARNED AREA. BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.
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 30, 12:10 PM CDT, 3 minutes earlier.
Area forecast discussion, Jun 30, 12:10 PM CDT, 3 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 1210 PM CDT TUE JUN 30 1998 COMPLEX OF STORMS CENTERED NEAR TULSA NOW AND SHOULD CONTINUE SE INTO EC OK THIS AFTERNOON. ATM OVER SE OK VERY UNSTABLE NOW SO SVR POTENTIAL IS STILL HERE EVEN WITH THE TEMPORARY WEAKENING OF STORMS. HAVE NOT HAD TIME TO LOOK OVER NEW MODELS WITH ONGOING WEATHER. FCSTID = 26 TUL 85 74 93 73 / 70 30 30 20 FSM 88 75 94 74 / 40 20 30 20 MLC 90 75 95 76 / 30 10 20 20 BVO 85 72 92 74 / 40 40 30 30 FYV 85 69 89 69 / 40 30 30 30 IDB 95 72 95 73 / 20 10 10 10 BYV 85 69 89 69 / 30 30 30 30 MIO 85 71 91 71 /$ 30 40 30 30 MKO 84 74 93 73 / 70 30 30 20 F10 85 75 94 76 / 70 20 20 20 HHW 95 72 95 73 / 20 10 10 10 .TUL... OK...NONE. AR...NONE.
In the hours before
Special weather statement, Jun 30, 11:40 AM CDT, 33 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-011200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 1140 AM CDT TUE JUN 30 1998 A FEW SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS THROUGH TONIGHT. A SLOW MOVING COLD FRONT ACROSS SOUTHERN KANSAS WILL SAG SOUTHWARD THIS AFTERNOON INTO NORTHERN OKLAHOMA. A MOIST UNSTABLE AIRMASS REMAINS IN PLACE SOUTH OF THE FRONT...ALTHOUGH IT HAS BEEN CAPPED RECENTLY BY A LAYER OF WARM AIR IN THE MID LEVELS. THE CAP HAS WEAKENED THIS MORNING IN NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS AS SLIGHTLY COOLER AIR ALOFT HAS SPREAD INTO THE AREA. IN THE MEANTIME...THE CAP REMAINS RATHER STRONG IN SOUTHEAST OKLAHOMA. A COMPLEX OF STORMS MOVED OUT OF SOUTHEAST KANSAS LATE LAST NIGHT AND CLIPPED PARTS OF NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS THIS MORNING. THE COMPLEX HAS DECAYED LATE THIS MORNING...BUT HAS LEFT BOUNDARIES OF COOLER OUTFLOW WHICH WILL INTERACT TO GIVE LIFE TO MORE THUNDERSTORMS THIS AFTERNOON. IF THIS INTERACTION OCCURS IN AN AREA WHERE THE AIR MASS HAS SUFFICIENTLY DESTABILIZED...THE STORMS MAY BECOME SEVERE. THE PRIMARY AREA WILL BE ACROSS NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS NORTH OF INTERSTATE 40. THE QUESTION WILL BE IF THERE IS SUFFICIENT INSTABILITY TO SUPPORT SEVERE THUNDERSTORMS...AS THE MORNING COMPLEX MAY HAVE TEMPORARILY SETTLED THE ATMOSPHERE AT SOME LOCATIONS. THE MAIN SEVERE WEATHER THREAT WITH THESE STORMS WILL BE LARGE HAIL AND DAMAGING WINDS. HEAVY DOWNPOURS WILL ALSO ACCOMPANY THESE STORMS. THE STORMS MAY WEAKEN THIS EVENING...BUT MORE THUNDERSTORMS MAY REDEVELOP OVERNIGHT AGAIN IN KANSAS. IF THESE STORMS ORGANIZE INTO A COMPLEX... THEY WILL AGAIN DROP SOUTHEASTWARD AS THEY DID LAST NIGHT. AGAIN THE MAIN AREA THREATENED WILL BE NORTHEAST OF A PAWHUSKA TO FAYETTEVILLE LINE. EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS ACROSS NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS SHOULD MONITOR THIS WEATHER SITUATION FOR POSSIBLE ACTIVATION THIS AFTEROON AND EVENING... AND PERHAPS AGAIN LATE TONIGHT.
Special weather statement, Jun 30, 11:40 AM CDT, 33 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-011200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 1140 AM CDT TUE JUN 30 1998 A FEW SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS THROUGH TONIGHT. A SLOW MOVING COLD FRONT ACROSS SOUTHERN KANSAS WILL SAG SOUTHWARD THIS AFTERNOON INTO NORTHERN OKLAHOMA. A MOIST UNSTABLE AIRMASS REMAINS IN PLACE SOUTH OF THE FRONT...ALTHOUGH IT HAS BEEN CAPPED RECENTLY BY A LAYER OF WARM AIR IN THE MID LEVELS. THE CAP HAS WEAKENED THIS MORNING IN NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS AS SLIGHTLY COOLER AIR ALOFT HAS SPREAD INTO THE AREA. IN THE MEANTIME...THE CAP REMAINS RATHER STRONG IN SOUTHEAST OKLAHOMA. A COMPLEX OF STORMS MOVED OUT OF SOUTHEAST KANSAS LATE LAST NIGHT AND CLIPPED PARTS OF NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS THIS MORNING. THE COMPLEX HAS DECAYED LATE THIS MORNING...BUT HAS LEFT BOUNDARIES OF COOLER OUTFLOW WHICH WILL INTERACT TO GIVE LIFE TO MORE THUNDERSTORMS THIS AFTERNOON. IF THIS INTERACTION OCCURS IN AN AREA WHERE THE AIR MASS HAS SUFFICIENTLY DESTABILIZED...THE STORMS MAY BECOME SEVERE. THE PRIMARY AREA WILL BE ACROSS NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS NORTH OF INTERSTATE 40. THE QUESTION WILL BE IF THERE IS SUFFICIENT INSTABILITY TO SUPPORT SEVERE THUNDERSTORMS...AS THE MORNING COMPLEX MAY HAVE TEMPORARILY SETTLED THE ATMOSPHERE AT SOME LOCATIONS. THE MAIN SEVERE WEATHER THREAT WITH THESE STORMS WILL BE LARGE HAIL AND DAMAGING WINDS. HEAVY DOWNPOURS WILL ALSO ACCOMPANY THESE STORMS. THE STORMS MAY WEAKEN THIS EVENING...BUT MORE THUNDERSTORMS MAY REDEVELOP OVERNIGHT AGAIN IN KANSAS. IF THESE STORMS ORGANIZE INTO A COMPLEX... THEY WILL AGAIN DROP SOUTHEASTWARD AS THEY DID LAST NIGHT. AGAIN THE MAIN AREA THREATENED WILL BE NORTHEAST OF A PAWHUSKA TO FAYETTEVILLE LINE. EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS ACROSS NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS SHOULD MONITOR THIS WEATHER SITUATION FOR POSSIBLE ACTIVATION THIS AFTEROON AND EVENING... AND PERHAPS AGAIN LATE TONIGHT.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 6:31 AM CDT | Severe Thunderstorm Warning | TSA | Delaware | 59 min |
| Jun 30, 6:53 AM CDT | Severe Thunderstorm Warning | TSA | Craig | 37 min |
| Jun 30, 8:47 AM CDT | Severe Thunderstorm Warning | TSA | Cherokee, Sequoyah | 58 min |
| Jun 30, 12:17 PM CDT | Flash Flood Warning | TSA | Rogers, Tulsa | 2 hr |
| Jun 30, 12:59 PM CDT | Severe Thunderstorm Warning | TSA | Muskogee | 61 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.