Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 422, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Aug 30, 1998, 3:16 PM CDT for Choctaw County, Pushmataha County, Oklahoma. It was in force for 44 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
- Aug 30, 1998, 3:16 PM CDT (20:16 UTC)
- Expired
- Aug 30, 1998, 4:00 PM CDT
- In force
- 44 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
Counties Choctaw County, OK, Pushmataha County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 30, 3:35 PM CDT | Hail 1 | Rattan, OK | Dime to quarter-sized hail nearly covered the ground. |
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
Norman, OK (KOUN), launched 12:00Z, 8.3 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2117 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
078 WUUS54 KTSA 302018 RRA SVRTUL OKC023-127-302100- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 316 PM CDT SUN AUG 30 1998 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN CHOCTAW COUNTY IN SOUTHEASTERN OKLAHOMA SOUTHERN PUSHMATAHA COUNTY IN SOUTHEASTERN OKLAHOMA * UNTIL 400 PM CDT * AT 314 PM...RADAR DETECTED A SEVERE THUNDERSTORM 3 MILES WEST OF OLETA...MOVING SLOWLY SOUTH AT 7 MPH. * SOME LOCATIONS AFFECTED INCLUDE... OLETA DELA RATTAN BELZONI SPEER MESSER HAIL TO THE SIZE OF DIMES 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 Aug 30, 10:00 AM CDT, 5 hours 16 minutes earlier.
Area forecast discussion, Aug 30, 10:00 AM CDT, 5 hours 16 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 1000 AM CDT SUN AUG 30 1998 HAVE REVIEWED RAOBS AND THCKNS OVER FCST AREA...AND SEE LITTLE CHANGE FROM SATURDAY AFTN EXCEPT NORMAL DIURNAL CHANGES. RESULT IS THAT FCST HIGHS FOR TDA SHD BE VERY SIMILAR TO THOSE OF SATURDAY. APPEARS MDNT FCST FIGURED THAT ALSO...SO WILL MAKE NO CHANGES TO FCST HIGHS FOR TODAY. ALSO...THERE IS NO SGFNT THERMAL ADVECTION AND NO CHANGE IN MOISTURE WHICH WOULD ALTER EXPECTED CLOUD COVER. K-INDEX OVER AREA IS QUITE LOW SO DO NOT ANTICIPATE ANY AIRMASS CONVECTION. TEMPS ALOFT ALSO RATHER WARM...MAKING AIRMASS QUITE STABLE. FCSTID = 02 .TUL... OK...NONE. AR...NONE.
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.