Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 198, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at May 2, 1990, 11:46 PM CDT for Choctaw 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
- May 2, 1990, 11:46 PM CDT (04:46 UTC)
- Expired
- May 3, 1990, 12:30 AM CDT
- In force
- 44 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties
County Choctaw County, OK
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 2, 11:48 PM CDT | Thunderstorm Wind 0 | Choctaw, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Longview/Gregg, TX (KGGG), launched 00:00Z, 4.8 hours before the alert went out and 206 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
- 498 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 1063 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 230 m²/s²
- 0-3 km storm-relative helicity
- 443 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 8.6
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.
In the hours before
Special weather statement, May 2, 11:03 PM CDT, 43 minutes before
OKC085-019-067-030500 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 1103PM CDT WED MAY 02 1990 ...STRONG THUNBDERSTORM APPROACHING LOVE COUNTY... AT 11 PM A STRONG THUNDERSTORM WAS LOCATED IN NORTH TEXAS 40 MILES SOUTHWEST OF ARDMORE. THE THUNDERSTORM WAS MOVING NORTHEAST AT 45 MPH. THIS THUNDERSTORM WILL MOVE INTO SOUTHCENTRAL OKLAHOMA...BETWEEN RUBOTTOM AND LEON...BETWEEN 1115 PM AND 1130 PM. STRONG WINDS...HAIL... AND BRIEF HEAVY RAINS ARE POSSIBLE. A TORNADO WATCH REMAINS IN EFFECT FOR PORTIONS OF SOUTHERN OKLAHOMA UNTIL 4 AM WEDNESDAY MORNING. PRODUCE THE WIDESPREAD RAIN ACROSS THE STATE. AS THE UPPER LEVEL STORM SYSTEM APPROCHES FROM THE WEST LATER THIS AFTERNOON AND TONIGHT RAINFALL WILL INCREASE ACROSS THE STATE WITH ADDITIONAL RAINFALL IN EXCESS OF 5 INCHES POSSIBLE OVER MAINLY SOUTHERN AND CENTRAL SECTIONS. THE HEAVY RAIN IS LIKLEY TO CONTINUE OVER MOST OF THE STATE THROUGH TONIGHT AND INTO THE DAY THURSDAY. A FEW THUNDERSTORMS LATE THIS AFTERNOON AND TONIGHT IN THE SOUTHEAST PORTION OF THE STATE COULD PRODUCE SOME HAIL.
Special weather statement, May 2, 11:09 PM CDT, 37 minutes before
OKC085-019-067-030500 SPECIAL WEATHER STATEMENT...CORRECTION NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 1103PM CDT WED MAY 02 1990 ...STRONG THUNBDERSTORM APPROACHING LOVE COUNTY... AT 11 PM A STRONG THUNDERSTORM WAS LOCATED IN NORTH TEXAS 40 MILES SOUTHWEST OF ARDMORE. THE THUNDERSTORM WAS MOVING NORTHEAST AT 45 MPH. THIS THUNDERSTORM WILL MOVE INTO SOUTHCENTRAL OKLAHOMA...BETWEEN RUBOTTOM AND LEON...BETWEEN 1115 PM AND 1130 PM. STRONG WINDS...HAIL... AND BRIEF HEAVY RAINS ARE POSSIBLE. A TORNADO WATCH REMAINS IN EFFECT FOR PORTIONS OF SOUTHERN OKLAHOMA UNTIL 4 AM WEDNESDAY MORNING.
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 2, 9:56 PM CDT | Flash Flood Warning | OUN | Choctaw, Pushmataha | 2 hr |
| May 2, 11:45 PM CDT | Flash Flood Warning | OUN | Atoka, Bryan, Carter, Coal, Johnston, Marshall and 2 more | 6 hr |
| May 2, 11:45 PM CDT | Flash Flood Warning | OUN | Choctaw, Pushmataha | 6 hr |
| May 2, 11:45 PM CDT | Flash Flood Warning | OUN | Hughes | 6 hr |
| May 2, 11:45 PM CDT | Flash Flood Warning | OUN | Love | 6 hr |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1990Every severe thunderstorm warning in 1990
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.