Alert archive / Arkansas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 522, NWS Little Rock, AR

July 31, 2008Lonoke County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Jul 31, 2008, 2:51 PM CDT for Lonoke County, Arkansas. It was in force for 24 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
Jul 31, 2008, 2:51 PM CDT (19:51 UTC)
Expired
Jul 31, 2008, 3:15 PM CDT
In force
24 min
Issued by
NWS Little Rock, AR
Area
Storm-based polygon

County Lonoke County, AR

The radar

The Little Rock radar (KLZK), 35 km from the middle of the area, began a volume at 19:54 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

Little Rock, AR (KLZK), launched 12:00Z, 7.9 hours before the alert went out and 177 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, Little Rock, AR at 12:00Z on 2008-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1247 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, Little Rock, AR at 12:00Z on 2008-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 square meters per square second.1939Sfc1 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
1247 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
1192 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
47 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 31, 2:37 PM CDTSevere Thunderstorm WarningLZKPulaski23 min
Jul 31, 3:17 PM CDTSevere Thunderstorm WarningLZKLonoke, Prairie43 min
Jul 31, 3:30 PM CDTSevere Thunderstorm WarningLZKJefferson45 min
Jul 31, 3:36 PM CDTSevere Thunderstorm WarningLZKSaline39 min
Jul 31, 3:37 PM CDTSevere Thunderstorm WarningLZKDrew38 min
Jul 31, 4:12 PM CDTSevere Thunderstorm WarningLZKGrant, Jefferson, Pulaski, Saline33 min
Jul 31, 4:18 PM CDTSevere Thunderstorm WarningLZKDrew, Lincoln42 min
Jul 31, 4:23 PM CDTFlash Flood WarningLZKPulaski, Saline2 hr
Jul 31, 4:29 PM CDTSevere Thunderstorm WarningLZKMonroe31 min
Jul 31, 4:37 PM CDTSevere Thunderstorm WarningLZKCleveland, Lincoln38 min
Jul 31, 4:44 PM CDTSevere Thunderstorm WarningLZKArkansas, Desha31 min
Jul 31, 4:47 PM CDTSevere Thunderstorm WarningLZKGrant, Jefferson43 min
Jul 31, 5:16 PM CDTSevere Thunderstorm WarningLZKDesha29 min
Jul 31, 5:52 PM CDTSevere Thunderstorm WarningLZKJackson, Woodruff38 min
Jul 31, 6:25 PM CDTSevere Thunderstorm WarningLZKDallas50 min
Jul 31, 6:35 PM CDTSevere Thunderstorm WarningLZKClark40 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2008Every severe thunderstorm warning in 2008

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.