Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 83, NWS Shreveport, LA

May 3, 1990McCurtain County, Oklahoma

NWS Shreveport, LA issued this severe thunderstorm warning at May 3, 1990, 12:07 AM CDT for McCurtain County, Oklahoma. It was in force for 68 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 3, 1990, 12:07 AM CDT (05:07 UTC)
Expired
May 3, 1990, 1:15 AM CDT
In force
68 min
Issued by
NWS Shreveport, LA
Area
Whole counties

County McCurtain 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

TimeReportWhereRemark
May 3, 12:35 AM CDTThunderstorm Wind 0Mccurtain, 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, 5.1 hours before the alert went out and 197 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.

Skew-T log-pSkew-T log-p diagram, Longview/Gregg, TX at 00:00Z on 1990-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 498 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Longview/Gregg, TX at 00:00Z on 1990-05-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 230 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
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

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSHV 030509
SVRSHV
OKC089-030615-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1207 AM CDT THU MAY 3 1990
 
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  115 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS..
 
IN SOUTHEAST OKLAHOMA
 
   ...MCCURTAIN COUNTY
 
AT 1205 AM CDT WEATHER SERVICE RADARS IN LONGIVEW AND SHREVEPORT
AND LONGVIEW INDICATED A SEVERE THUNDERSTORM OVER SOUTHEAST
OKLAHOMA ABOUT 8 MILES WEST OF VALLIANT IN MCCURTAIN MOVING TO THE
EAST AT ABOUT 35 MPH. THIS STORM WILL ALSO PRODUCE VERY HEAVY
RAINS WHICH WILL CAUSE FLOODING IN A SHORT PERIOD OF TIME.
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON6'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

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, 11:22 PM CDT, 45 minutes before
OKZ026-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-
003-004-005-006-030700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1120 PM CDT WED MAY 2 1990

...A FLASH FLOOD WATCH IN EFFECT TONIGHT THROUGH EARLY THURSDAY
FOR SOUTHWEST ARKANSAS..NORTHEAST TEXAS..AND SOUTHEAST OKLAHOMA...

AT 1115 PM CDT WEATHER SERVICE RADAR IN SHREVEPORT SHOWED AN AREA
OF SHOWERS AND THUNDERSTORMS OVER SOUTHEAST OKLAHOMA AND NORTH TEXAS.
THE AREA EXTENDED FROM NEAR STIGLER AND THE NORTHWEST CORNER OF
MCCURTAIN COUNTY SOUTHWEST TO NEAR ANTLERS OKLAHOMA AND INTO NORTH
TEXAS TO NEAR BONHAM AND THE DALLAS/FORT WORTH METROPLEX.  THE AREA
OF RAINFALL WAS MOVING TO THE EAST AT ABOUT 10 TO 15 MPH WHILE THE
SHOWERS AND THUNDERSTORMS WITHIN THE AREA MOVED TO THE NORTHEAST
AT 35 MPH.

THIS BAND OF SHOWERS AND THUNDERSTORMS SHOULD CONTINUE TO MOVE TO THE
EAST AND AFFECT EXTREME SOUTHEAST OKLAHOMA..AND POSSIBLY SOUTHWEST
ARKANSAS AND NORTHEAST TEXAS AFTER MIDNIGHT AND TOWARD MORNING. HEAVY
RAINFALL ASSOCIATED WITH THE STORMS DURING THE NIGHT WILL PROVIDE RAPID
WATER RUNOFF DUE TO THE SATURATED SOILS OVER THE THREE STATE AREA FROM
RECENT RAINS..PARTS OF SOUTHEAST OKLAHOMA..SOUTHWEST ARKANSAS..AND
EXTREME NORTHEAST TEXAS RECEIVED FROM NEAR TWO TO FOUR INCHES OF RAIN
DURING THE EVENING TUESDAY AND WEDNESDAY MORNING.

PERSONS LIVING IN LOW LYING OR FLOOD PRONE AREAS OR LAKES..RIVERS..AND
STREAMS THAT ARE AT HIGHS LEVELS OR FORECASTED TO REACH HIGH LEVELS..
SHOULD BE PREPARED TO MOVE TO HIGHER GROUND IF HEAVY RAINS OCCUR OR
A WARNING IS ISSUED FOR YOUR AREA DURING THE NIGHT AND THURSDAY.

STAY TUNED TO TV...RADIO AND NOAA WEATHER RADIO FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 3, 2:10 AM CDTFlash Flood WarningSHVMcCurtain6 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.