Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 381, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jul 2, 1998, 3:59 PM CDT for LeFlore County, Oklahoma. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 2, 1998, 3:59 PM CDT (20:59 UTC)
- Expired
- Jul 2, 1998, 4:30 PM CDT
- In force
- 31 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County LeFlore County, OK
The radar
The Western Arkansas radar (KSRX), 53 km from the middle of the area, began a volume at 21:00 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.
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 9.0 hours before the alert went out and 237 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
- 144 J/kg
- Mixed-layer CIN
- -145 J/kg
- Mixed-layer LCL
- 1146 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 83 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
239 WUUS54 KTSA 022058 RRA SVRTUL OKC079-022130- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 359 PM CDT THU JUL 2 1998 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN LE FLORE COUNTY IN SOUTHEASTERN OKLAHOMA * UNTIL 430 PM CDT * AT 359 PM...NATIONAL WEATHER SERVICE RADAR DETECTED A SEVERE THUNDERSTORM 2 MILES NORTH OF PAGE...MOVING EAST AT 5 MPH. * SOME LOCATIONS AFFECTED INCLUDE... PAGE HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 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 Jul 2, 3:55 PM CDT, 4 minutes earlier.
Area forecast discussion, Jul 2, 3:55 PM CDT, 4 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 355 PM CDT THU JUL 2 1998 PROBLEM(S) OF THE DAY: POPS WILL THE CONVECTION BE SCATTERED OR NUMEROUS? NW FLOW IN THE MID LEVELS TO WEAKEN EVEN MORE OVER THE NEXT DAY OR SO BUT WITH WEAK WAA AND DIRECTIONAL SHEAR COULD SEE ONE MORE ROUND OF SCT CONVECTION LATE TONIGHT AND TOMORROW. FWC POPS ACTUALLY LOOK REASONABLE IN MOST CASES. NEXT FEATURE IS TROPICAL DISTURBANCE NO LOCATED OFF THE FAR S TX COAST. AGREE WITH NCEP AND OTHER DISC THAT NGM HANDLING IS POOR SO FOLLOWED ETA/AVN. BEST TIMING FOR RAINFALL WOULD BE SAT NIGHT THROUGH EARLY MON. WITH MODELS EXCEPT NGM IN AGREEMENT ON TIMING AND AMOUNT OF MOISTURE...HAVE MOVED POPS UP TO LIKELY FOR SUN. PW VALUES WITH THIS SYS WILL BE QUITE HIGH...IN EXCESS OF 2 INCHES. WLY FLOW BY TUES SHOULD REMAIN N OF THE AREA AND UPR RIDGE AXIS LYING PARALLEL TO 35N. FCSTID = 26 TUL 75 95 77 94 / 20 20 5 10 FSM 73 96 74 95 / 20 20 5 20 MLC 75 97 75 95 / 10 10 5 20 BVO 74 95 74 95 / 20 10 5 10 FYV 68 91 70 92 / 30 30 10 10 IDB 71 99 71 95 / 10 10 5 20 BYV 67 90 69 91 / 40 30 10 10 MIO 71 93 73 93 / 30 20 10 10 MKO 75 95 75 95 / 20 20 10 10 F10 75 96 76 95 / 10 10 5 10 HHW 74 99 74 95 / 10 10 5 20 .TUL... OK...NONE. AR...NONE. -------------------- EXPERIMENTAL OUTPUT: SYNOPTIC PATTERN: MODERATE UPPER HIGH/RIDGE TO THE SOUTH EXPECTED MESOSCALE PATTERN: WEAK OUTFLOW BOUNDARY GENERAL WEATHER EXPECTED NEXT 24 HOURS: CONVECTIVE PRECIP HAZARDOUS WEATHER EXPECTED NEXT 24 HOURS: NONE NGM CONFIDENCE: 5 ON A SCALE OF 0 TO 10 ETA CONFIDENCE: 7 ON A SCALE OF 0 TO 10 AVN CONFIDENCE: 7 ON A SCALE OF 0 TO 10 FCST CONFIDENCE: 7 ON A SCALE OF 0 TO 10 MOST USEFUL TOOL: RADAR OBSERVATIONS BEST MODEL FIELD: CONVECTIVE PRECIP.. 500 AND 700MB HEIGHTS.. MID-LEVEL WINDS
In the hours before
Special weather statement, Jul 2, 1:00 PM CDT, 2 hours 59 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-031200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT THU JUL 2 1998 ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE IN NORTHWEST ARKANSAS THIS AFTERNOON. ISOLATED SEVERE THUNDERSTORMS ARE ALSO POSSIBLE LATE TONIGHT ACROSS PARTS OF NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS. EARLY THIS AFTERNOON SCATTERED THUNDERSTORMS WERE MOVING ACROSS NORTHWEST ARKANSAS. SUFFICIENT INSTABILITY IS PRESENT FOR ANY ONE OF THESE STORMS TO BRIEFLY BECOME SEVERE WITH HAIL AND DAMAGING WINDS. THESE STORMS ARE EXPECTED TO MOVE OUT OF THE AREA BY LATE THIS AFTERNOON. ADDITIONAL THUNDERSTORM DEVELOPMENT IS POSSIBLE AFTER MIDNIGHT ACROSS NORTHWEST ARKANSAS AND PARTS OF NORTHEAST OKLAHOMA...GENERALLY NORTH OF THE ARKANSAS RIVER. WHILE WIND FIELDS WILL REMAIN UNFAVORABLE FOR ORGANIZED SEVERE THUNDERSTORMS...AN ISOLATED STORM OR TWO COULD REACH SEVERE LIMIT^S.
Special weather statement, Jul 2, 1:00 PM CDT, 2 hours 59 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-031200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT THU JUL 2 1998 ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE IN NORTHWEST ARKANSAS THIS AFTERNOON. ISOLATED SEVERE THUNDERSTORMS ARE ALSO POSSIBLE LATE TONIGHT ACROSS PARTS OF NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS. EARLY THIS AFTERNOON SCATTERED THUNDERSTORMS WERE MOVING ACROSS NORTHWEST ARKANSAS. SUFFICIENT INSTABILITY IS PRESENT FOR ANY ONE OF THESE STORMS TO BRIEFLY BECOME SEVERE WITH HAIL AND DAMAGING WINDS. THESE STORMS ARE EXPECTED TO MOVE OUT OF THE AREA BY LATE THIS AFTERNOON. ADDITIONAL THUNDERSTORM DEVELOPMENT IS POSSIBLE AFTER MIDNIGHT ACROSS NORTHWEST ARKANSAS AND PARTS OF NORTHEAST OKLAHOMA...GENERALLY NORTH OF THE ARKANSAS RIVER. WHILE WIND FIELDS WILL REMAIN UNFAVORABLE FOR ORGANIZED SEVERE THUNDERSTORMS...AN ISOLATED STORM OR TWO COULD REACH SEVERE LIMIT^S.
Local storm report, Jul 2, 3:53 PM CDT, 6 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
345 PM CST THU JUL 02 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0330 AM 3 NW BRISTOW OK 2.75 INCH HAIL
07/02/98 CREEK BASEBALL HAIL DAMAGED
SEVERAL CARS AND A HOUSE
NEAR BRISTOW (REPORTED BY
CREEK CO EM)The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 3:19 AM CDT | Severe Thunderstorm Warning | TSA | Creek | 41 min |
| Jul 2, 8:05 AM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 25 min |
| Jul 2, 4:27 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 33 min |
| Jul 2, 4:29 PM CDT | Severe Thunderstorm Warning | TSA | Latimer | 31 min |
| Jul 2, 4:46 PM CDT | Flash Flood Warning | TSA | Pittsburg | 2 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.