Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 49, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Mar 30, 1998, 8:12 PM CST for LeFlore County, Oklahoma. It was in force for 48 min. 3 reports 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
- Mar 30, 1998, 8:12 PM CST (02:12 UTC)
- Expired
- Mar 30, 1998, 9:00 PM CST
- In force
- 48 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County LeFlore County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 30, 8:16 PM CST | Thunderstorm Wind 52 | Spiro, OK | |
| Mar 30, 8:25 PM CST | Hail 0.75 | Wister, OK | |
| Mar 30, 8:45 PM CST | Hail 0.88 | Wister, 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 |
|---|---|---|---|
| Mar 30, 7:00 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 2.2 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
- 368 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 1388 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 247 m²/s²
- 0-3 km storm-relative helicity
- 389 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 5.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 310212 RRA SVRTUL OKC079-310300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 812 PM CST MON MAR 30 1998 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 900 PM CST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEASTERN OKLAHOMA ...LE FLORE COUNTY AT 810 PM...A LINE OF SEVERE THUNDERSTORMS EXTENDED FROM NEAR BOKOSHE TO 2 MILES EAST OF TALAHINA MOVING NORTHEAST AT 40 MPH. WISTER AND HEAVENER ARE IN THE PATH OF THESE STORMS. HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER... SEVERE T>HUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 6:14 PM CST | Severe Thunderstorm Warning | TSA | Muskogee | 46 min |
| Mar 30, 6:23 PM CST | Tornado Warning | TSA | McIntosh | 37 min |
| Mar 30, 6:32 PM CST | Severe Thunderstorm Warning | TSA | Pushmataha | 43 min |
| Mar 30, 6:40 PM CST | Severe Thunderstorm Warning | TSA | Haskell, Latimer | 50 min |
| Mar 30, 6:46 PM CST | Tornado Warning | TSA | Cherokee, Muskogee | 44 min |
| Mar 30, 6:51 PM CST | Severe Thunderstorm Warning | TSA | Sequoyah | 39 min |
| Mar 30, 6:53 PM CST | Severe Thunderstorm Warning | TSA | Pittsburg | 52 min |
| Mar 30, 6:54 PM CST | Tornado Warning | TSA | Sequoyah | 51 min |
| Mar 30, 7:26 PM CST | Tornado Warning | TSA | Adair, Cherokee | 49 min |
| Mar 30, 7:30 PM CST | Severe Thunderstorm Warning | TSA | Latimer, LeFlore, Pushmataha | 45 min |
| Mar 30, 7:30 PM CST | Severe Thunderstorm Warning | TSA | Haskell | 45 min |
| Mar 30, 7:33 PM CST | Tornado Warning | TSA | Sequoyah | 42 min |
| Mar 30, 7:38 PM CST | Severe Thunderstorm Warning | TSA | Delaware | 52 min |
| Mar 30, 7:58 PM CST | Severe Thunderstorm Warning | TSA | Ottawa | 32 min |
| Mar 30, 8:53 PM CST | Severe Thunderstorm Warning | TSA | LeFlore | 22 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.