Alert archive / Arkansas / Tornado Warnings in 1999

Tornado Warning 63, NWS Little Rock, AR

April 4, 1999Clark County, Arkansas

NWS Little Rock, AR issued this tornado warning at Apr 4, 1999, 7:19 PM CDT for Clark County, Arkansas. It was in force for 31 min. 4 reports 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
Apr 4, 1999, 7:19 PM CDT (00:19 UTC)
Expired
Apr 4, 1999, 7:50 PM CDT
In force
31 min
Issued by
NWS Little Rock, AR
Area
Whole counties

County Clark County, AR

The radar

The Little Rock radar (KLZK), 121 km from the middle of the area, began a volume at 00:19 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.

What was reported inside it

TimeReportWhereRemark
Apr 4, 7:25 PM CDTHail 0.75Alpine, AR
Apr 4, 7:39 PM CDTHail 0.75Alpine, AR
Apr 4, 7:50 PM CDTHail 0.75Amity, AR
Apr 4, 7:50 PM CDTThunderstorm Wind 52Amity, AR

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.

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 0.3 hours before the alert went out and 183 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 1999-04-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 857 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 1999-04-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 109 square meters per square second.193958Sfc1 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
857 J/kg
Mixed-layer CIN
-82 J/kg
Mixed-layer LCL
883 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
109 m²/s²
0-3 km storm-relative helicity
240 m²/s²
Significant tornado parameter
0.6
Supercell composite
8.6

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.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 4, 7:31 PM CDTSevere Thunderstorm WarningLZKOuachita64 min
Apr 4, 7:51 PM CDTSevere Thunderstorm WarningLZKGarland, Hot Spring64 min
Apr 4, 7:57 PM CDTTornado WarningLZKPike48 min
Apr 4, 9:16 PM CDTSevere Thunderstorm WarningLZKClark, Hot Spring34 min
Apr 5, 11:58 AM CDTSevere Thunderstorm WarningLZKPolk32 min
Apr 5, 12:38 PM CDTSevere Thunderstorm WarningLZKHot Spring32 min
Apr 5, 12:56 PM CDTSevere Thunderstorm WarningLZKSaline34 min
Apr 5, 1:18 PM CDTSevere Thunderstorm WarningLZKPulaski32 min
Apr 5, 1:28 PM CDTSevere Thunderstorm WarningLZKFaulkner32 min
Apr 5, 1:37 PM CDTSevere Thunderstorm WarningLZKWoodruff33 min
Apr 5, 1:43 PM CDTSevere Thunderstorm WarningLZKJackson32 min
Apr 5, 1:56 PM CDTSevere Thunderstorm WarningLZKPulaski34 min
Apr 5, 1:57 PM CDTSevere Thunderstorm WarningLZKWhite33 min
Apr 5, 2:13 PM CDTSevere Thunderstorm WarningLZKLonoke32 min
Apr 5, 2:16 PM CDTSevere Thunderstorm WarningLZKIndependence49 min
Apr 5, 2:22 PM CDTSevere Thunderstorm WarningLZKJackson48 min
Apr 5, 2:29 PM CDTSevere Thunderstorm WarningLZKWhite46 min
Apr 5, 2:38 PM CDTSevere Thunderstorm WarningLZKFulton32 min
Apr 5, 2:54 PM CDTSevere Thunderstorm WarningLZKPrairie51 min
Apr 5, 3:28 PM CDTSevere Thunderstorm WarningLZKPope37 min
Apr 5, 4:35 PM CDTSevere Thunderstorm WarningLZKVan Buren35 min
Apr 5, 4:38 PM CDTSevere Thunderstorm WarningLZKLonoke, Pulaski37 min
Apr 5, 4:55 PM CDTSevere Thunderstorm WarningLZKStone35 min
Apr 5, 5:09 PM CDTSevere Thunderstorm WarningLZKIzard36 min
Apr 5, 5:11 PM CDTSevere Thunderstorm WarningLZKCleburne34 min
Apr 5, 5:41 PM CDTSevere Thunderstorm WarningLZKIndependence, Sharp34 min
Apr 5, 6:00 PM CDTSevere Thunderstorm WarningLZKMonroe, Prairie50 min
Apr 5, 6:26 PM CDTSevere Thunderstorm WarningLZKArkansas39 min

Nearby

Tornado Warnings in Arkansas, 1999Every tornado warning in 1999Tornadoes in 1999

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; radar from the NEXRAD Level II archive.