Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 139, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 26, 1998, 9:46 PM CDT for Haskell County, Pittsburg County, Oklahoma. It was in force for 44 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
- Apr 26, 1998, 9:46 PM CDT (02:46 UTC)
- Expired
- Apr 26, 1998, 10:30 PM CDT
- In force
- 44 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
Counties Haskell County, OK, Pittsburg County, OK
The radar
The Western Arkansas radar (KSRX), 100 km from the middle of the area, began a volume at 02:47 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
Norman, OK (KOUN), launched 00:00Z, 2.8 hours before the alert went out and 180 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 542 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 264 m²/s²
- 0-3 km storm-relative helicity
- 297 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, 9:25 PM CDT, 21 minutes earlier.
Area forecast discussion, Apr 26, 9:25 PM CDT, 21 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 925 PM CDT SUN APR 26 1998 KINX AND KSRX 88DS INDICATING TSRA MOVING NORTH ACROSS FA ATTM. SQUALL LINE MOVING ACROS SOUTHERN PTN OF FA WITH STRONG WINDS. HEAVIEST RAINS SETTING UP JUST WEST OF FA NOW. LATEST FFG VALUES IN THE 2 TO 3 INCH RANGE FOR 3H. MAIN FLOODING CONCERNS ARE FOR AREAS ACROSS NORTHERN FA THAT RECEIVED PCPN THIS MORN WHERE GUIDANCE VALUES ARE A TOUCH LOWER. WILL MONITOR PRECIP AMOUNTS FOR POSSIBLE FFA ISSUANCE. OTHERWISE...CURRENT FCST IS HANDLING EVENT VERY NICELY AND AM NOT PLANNING AN UPDATE ATTM. HOWIESON FCSTID = 44 .TUL... OK...NONE. AR...NONE. r
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 8:33 PM CDT | Severe Thunderstorm Warning | TSA | Choctaw, Pushmataha | 72 min |
| Apr 26, 9:25 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, Pittsburg | 50 min |
| Apr 26, 9:42 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore, Pushmataha | 48 min |
| Apr 26, 10:30 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 30 min |
| Apr 27, 5:29 AM CDT | Flash Flood Warning | TSA | Creek, Osage, Pawnee, Tulsa | 2 hr |
| Apr 27, 7:35 AM CDT | Flash Flood Warning | TSA | Creek, Osage, Pawnee, Tulsa | 3 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.