Alert archive / Arkansas / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 324, NWS Little Rock, AR

October 30, 2004Perry County, Saline County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Oct 30, 2004, 12:42 AM CDT for Perry County, Saline County, Arkansas. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 30, 2004, 12:42 AM CDT (05:42 UTC)
Expired
Oct 30, 2004, 1:30 AM CDT
In force
48 min
Issued by
NWS Little Rock, AR
Area
Counties, with a storm outline in the text

Counties Perry County, AR, Saline County, AR

The radar

The Little Rock radar (KLZK), 50 km from the middle of the area, began a volume at 05:43 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 5.7 hours before the alert went out and 250 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, Springfield, MO at 00:00Z on 2004-10-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 452 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, Springfield, MO at 00:00Z on 2004-10-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 251 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
452 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
736 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
251 m²/s²
0-3 km storm-relative helicity
279 m²/s²
Significant tornado parameter
0.6
Supercell composite
2.9

Open this sounding in Storm Lab

The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 30, 1:28 AM CDTSevere Thunderstorm WarningLZKPulaski47 min
Oct 30, 2:11 AM CDTSevere Thunderstorm WarningLZKLonoke34 min
Oct 30, 2:36 AM CDTSevere Thunderstorm WarningLZKPrairie39 min
Oct 30, 3:15 AM CDTSevere Thunderstorm WarningLZKMonroe, Prairie, Woodruff30 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2004Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.