Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 113, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 15, 1998, 11:55 PM CDT for Choctaw County, Oklahoma. It was in force for 35 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 15, 1998, 11:55 PM CDT (04:55 UTC)
- Expired
- Apr 16, 1998, 12:30 AM CDT
- In force
- 35 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Choctaw County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 15, 11:56 PM CDT | Thunderstorm Wind | Sawyer, OK | Large tree limbs down and hail of unknown size |
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
Fort Worth, TX (KFWD), launched 00:00Z, 4.9 hours before the alert went out and 209 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
- 1195 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 1250 m above ground
- 0-6 km bulk shear
- 86 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 103 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
637 WUUS54 KTSA 160457 RRA SVRTUL OKC023-160530- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 1155 PM CDT WED APR 15 1998 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CHOCTAW COUNTY IN SOUTHEASTERN OKLAHOMA * UNTIL 1230 AM CDT * AT 1153 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A SEVERE THUNDERSTORM OVER HUGO... MOVING EAST AT 30 MPH. * SOME LOCATIONS AFFECTED INCLUDE... HUGO FALLON SAWYER FT TOWSON HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. REMAIN ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 7:01 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, LeFlore | 59 min |
| Apr 15, 7:40 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 50 min |
| Apr 15, 8:20 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 40 min |
| Apr 15, 8:45 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore, Pushmataha | 60 min |
| Apr 15, 11:18 PM CDT | Severe Thunderstorm Warning | TSA | Choctaw | 42 min |
| Apr 16, 2:30 AM CDT | Severe Thunderstorm Warning | TSA | McIntosh | 45 min |
| Apr 16, 2:39 AM CDT | Severe Thunderstorm Warning | TSA | LeFlore, Pushmataha | 36 min |
| Apr 16, 2:52 AM CDT | Severe Thunderstorm Warning | TSA | Cherokee, Muskogee | 38 min |
| Apr 16, 3:06 AM CDT | Severe Thunderstorm Warning | TSA | Adair, Haskell, Sequoyah | 54 min |
| Apr 16, 4:34 AM CDT | Severe Thunderstorm Warning | TSA | Latimer | 56 min |
| Apr 16, 4:52 AM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 38 min |
| Apr 16, 4:58 AM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 47 min |
| Apr 16, 5:28 AM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 47 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.