Alert archive / Texas / Severe Thunderstorm Watches in 1998

Severe Thunderstorm Watch 271

May 2, 19986 counties in Arkansas; 10 parishes in Louisiana; 45 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at May 2, 1998, 10:30 PM CDT for 6 counties in Arkansas; 10 parishes in Louisiana; 45 counties in Texas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
May 2, 1998, 10:30 PM CDT (03:30 UTC)
Expired
May 3, 1998, 5:00 AM CDT
In force
7 hr
Issued by
the Storm Prediction Center
All 61 counties

Columbia County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Nevada County, AR, Ouachita County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Natchitoches Parish, LA, Red River Parish, LA, Sabine Parish, LA, Vernon Parish, LA, Webster Parish, LA, Anderson County, TX, Angelina County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Collin County, TX, Dallas County, TX, Delta County, TX, Ellis County, TX, Falls County, TX, Fannin County, TX, Franklin County, TX, Freestone County, TX, Grayson County, TX, Gregg County, TX, Harrison County, TX, Henderson County, TX, Hopkins County, TX, Houston County, TX, Hunt County, TX, Kaufman County, TX, Lamar County, TX, Leon County, TX, Limestone County, TX, Madison County, TX, Marion County, TX, Morris County, TX, Nacogdoches County, TX, Navarro County, TX, Panola County, TX, Rains County, TX, Red River County, TX, Robertson County, TX, Rockwall County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Trinity County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX

Warnings issued inside it

28 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 2, 10:44 PM CDTSevere Thunderstorm WarningSHVCass51 min
May 2, 10:51 PM CDTSevere Thunderstorm WarningSHVLafayette, Miller49 min
May 2, 11:01 PM CDTSevere Thunderstorm WarningFWDKaufman64 min
May 2, 11:06 PM CDTSevere Thunderstorm WarningSHVWood49 min
May 2, 11:09 PM CDTSevere Thunderstorm WarningSHVSmith46 min
May 2, 11:11 PM CDTSevere Thunderstorm WarningFWDHopkins, Hunt, Rains64 min
May 2, 11:15 PM CDTSevere Thunderstorm WarningFWDHopkins60 min
May 2, 11:15 PM CDTSevere Thunderstorm WarningFWDVan Zandt60 min
May 2, 11:17 PM CDTSevere Thunderstorm WarningSHVBossier, Caddo63 min
May 2, 11:28 PM CDTSevere Thunderstorm WarningFWDHenderson62 min
May 2, 11:28 PM CDTSevere Thunderstorm WarningSHVGregg, Rusk47 min
May 2, 11:37 PM CDTSevere Thunderstorm WarningSHVCass33 min
May 2, 11:45 PM CDTSevere Thunderstorm WarningSHVCamp, Franklin, Morris, Titus60 min
May 2, 11:45 PM CDTSevere Thunderstorm WarningSHVUpshur60 min
May 3, 12:23 AM CDTSevere Thunderstorm WarningSHVBossier, Caddo47 min
May 3, 12:23 AM CDTSevere Thunderstorm WarningSHVWebster47 min
May 3, 12:26 AM CDTSevere Thunderstorm WarningSHVCass64 min
May 3, 12:48 AM CDTSevere Thunderstorm WarningSHVClaiborne47 min
May 3, 1:16 AM CDTSevere Thunderstorm WarningSHVBossier49 min
May 3, 1:21 AM CDTSevere Thunderstorm WarningSHVBienville49 min
May 3, 1:35 AM CDTSevere Thunderstorm WarningFWDHenderson55 min
May 3, 1:39 AM CDTSevere Thunderstorm WarningSHVBienville51 min
May 3, 1:48 AM CDTSevere Thunderstorm WarningSHVClaiborne, Webster47 min
May 3, 2:08 AM CDTSevere Thunderstorm WarningSHVNatchitoches, Red River47 min
May 3, 2:16 AM CDTSevere Thunderstorm WarningFWDLeon29 min
May 3, 2:28 AM CDTSevere Thunderstorm WarningHGXHouston, Madison, Trinity, Walker47 min
May 3, 2:37 AM CDTSevere Thunderstorm WarningSHVWebster48 min
May 3, 3:19 AM CDTSevere Thunderstorm WarningHGXSan Jacinto, Trinity, Walker61 min

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 3.5 hours before the alert went out and 158 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, Shreveport, LA at 00:00Z on 1998-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 224 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, Shreveport, LA at 00:00Z on 1998-05-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 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
224 J/kg
Mixed-layer CIN
-117 J/kg
Mixed-layer LCL
1943 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
119 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 3, 12:00 AM CDTSevere Thunderstorm WatchSPCArkansas, Clark, Cleburne, Cleveland, Conway, Crittenden and 32 more6 hr
May 3, 2:30 AM CDTSevere Thunderstorm WatchSPCAshley, Bradley, Calhoun, Chicot, Drew, Union6 hr
May 3, 3:00 AM CDTSevere Thunderstorm WatchSPCAllen, Beauregard, Calcasieu, Cameron, Jefferson Davis5 hr
May 3, 1:30 PM CDTSevere Thunderstorm WatchSPCAcadia, Allen, Avoyelles, Beauregard, Calcasieu, Cameron and 18 more7 hr
May 2, 7:15 PM CDTTornado WatchSPCBell, Blanco, Bosque, Brazos, Burleson, Burnet and 21 more6 hr

Nearby

Severe Thunderstorm Watches in Texas, 1998Severe Thunderstorm Watches in Louisiana, 1998Severe Thunderstorm Watches in Arkansas, 1998Every severe thunderstorm watch 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; the sounding from the Mesonet's radiosonde archive.