Alert archive / Arkansas / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 60

April 9, 200416 counties in Arkansas; 6 counties in Oklahoma; 4 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Apr 9, 2004, 7:40 PM CDT for 16 counties in Arkansas; 6 counties in Oklahoma; 4 counties in Texas. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Apr 9, 2004, 7:40 PM CDT (00:40 UTC)
Expired
Apr 10, 2004, 1:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 26 counties

Clark County, AR, Dallas County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Little River County, AR, Montgomery County, AR, Nevada County, AR, Ouachita County, AR, Pike County, AR, Polk County, AR, Pulaski County, AR, Saline County, AR, Sevier County, AR, Atoka County, OK, Bryan County, OK, Choctaw County, OK, Coal County, OK, McCurtain County, OK, Pushmataha County, OK, Delta County, TX, Fannin County, TX, Lamar County, TX, Red River County, TX

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 9, 7:40 PM CDTSevere Thunderstorm WarningFWDLamar50 min
Apr 9, 8:16 PM CDTTornado WarningLZKPolk29 min
Apr 9, 8:23 PM CDTSevere Thunderstorm WarningFWDLamar37 min
Apr 9, 8:30 PM CDTTornado WarningLZKMontgomery, Pike45 min
Apr 9, 8:32 PM CDTSevere Thunderstorm WarningLZKPerry, Saline58 min
Apr 9, 8:38 PM CDTSevere Thunderstorm WarningSHVHoward37 min
Apr 9, 8:57 PM CDTSevere Thunderstorm WarningSHVRed River63 min
Apr 9, 9:15 PM CDTTornado WarningLZKClark, Pike50 min
Apr 9, 9:17 PM CDTSevere Thunderstorm WarningLZKPulaski58 min
Apr 9, 9:30 PM CDTSevere Thunderstorm WarningLZKGrant, Saline45 min
Apr 9, 10:04 PM CDTSevere Thunderstorm WarningTSAChoctaw56 min
Apr 9, 10:07 PM CDTSevere Thunderstorm WarningLZKClark28 min
Apr 9, 10:15 PM CDTSevere Thunderstorm WarningLZKDallas50 min
Apr 9, 10:30 PM CDTSevere Thunderstorm WarningFWDLamar60 min
Apr 9, 11:21 PM CDTSevere Thunderstorm WarningSHVRed River54 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 0.7 hours before the alert went out and 214 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 2004-04-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 350 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 2004-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 square meters per square second.19395878Sfc1 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
350 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
1945 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 9, 7:02 PM CDTMesoscale DiscussionSPCCrawford, Franklin, Garland, Hempstead, Howard, Johnson and 9 more58 min
Apr 9, 10:06 PM CDTMesoscale DiscussionSPCClark, Dallas, Grant, Hempstead, Hot Spring, Howard and 5 more54 min
Apr 9, 11:57 PM CDTMesoscale DiscussionSPCHempstead, Little River, Nevada, Sevier63 min
Apr 10, 5:57 AM CDTMesoscale DiscussionSPCHoward, Little River, Pike, Polk, Scott, Sebastian and 1 more93 min
Apr 10, 2:50 PM CDTMesoscale DiscussionSPCAshley, Chicot, Columbia, Lafayette, Miller, Union115 min
Apr 10, 3:25 PM CDTSevere Thunderstorm WatchSPCAshley, Bradley, Calhoun, Chicot, Columbia, Desha and 5 more6 hr
Apr 9, 9:25 PM CDTMesoscale DiscussionSPCBeckham, Comanche, Greer, Harmon, Jackson, Kiowa and 2 more95 min
Apr 10, 9:08 AM CDTMesoscale DiscussionSPCBandera, Bell, Blanco, Bosque, Brown, Burnet and 21 more2 hr
Apr 10, 10:20 AM CDTSevere Thunderstorm WatchSPCBandera, Bastrop, Bell, Bexar, Blanco, Bosque and 33 more6 hr
Apr 10, 12:43 PM CDTMesoscale DiscussionSPCBandera, Bastrop, Bell, Bexar, Blanco, Burleson and 26 more2 hr
Apr 10, 2:50 PM CDTSevere Thunderstorm WatchSPCAtascosa, Austin, Bandera, Bastrop, Bee, Bexar and 52 more5 hr
Apr 10, 5:38 PM CDTMesoscale DiscussionSPCHardin, Jasper, Jefferson, Newton, Orange, Tyler2 hr
Apr 10, 6:09 PM CDTMesoscale DiscussionSPCAtascosa, Austin, Bee, Brazoria, Colorado, DeWitt and 17 more96 min
Apr 10, 6:30 PM CDTSevere Thunderstorm WatchSPCJasper, Jefferson, Newton, Orange5 hr

Nearby

Severe Thunderstorm Watches in Arkansas, 2004Severe Thunderstorm Watches in Oklahoma, 2004Severe Thunderstorm Watches in Texas, 2004Every severe thunderstorm watch in 2004

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.