Alert archive / Arkansas / Tornado Warnings in 1999

Tornado Warning 67, NWS Little Rock, AR

April 8, 1999Yell County, Arkansas

NWS Little Rock, AR issued this tornado warning at Apr 8, 1999, 9:36 PM CDT for Yell County, Arkansas. It was in force for 64 min. 2 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 8, 1999, 9:36 PM CDT (02:36 UTC)
Expired
Apr 8, 1999, 10:40 PM CDT
In force
64 min
Issued by
NWS Little Rock, AR
Area
Whole counties

County Yell County, AR

What was reported inside it

TimeReportWhereRemark
Apr 8, 9:40 PM CDTThunderstorm Wind 57Danville, AR
Apr 8, 10:00 PM CDTThunderstorm Wind 50Ola, 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

Springfield, MO (KSGF), launched 00:00Z, 2.6 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, Springfield, MO at 00:00Z on 1999-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 737 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 1999-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 453 square meters per square second.1939587897117136Sfc1 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
737 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
937 m above ground
0-6 km bulk shear
83 kt
0-1 km storm-relative helicity
453 m²/s²
0-3 km storm-relative helicity
582 m²/s²
Significant tornado parameter
2.5
Supercell composite
13.2

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.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 8, 7:53 PM CDTTornado WarningLZKJohnson32 min
Apr 8, 8:14 PM CDTSevere Thunderstorm WarningLZKNewton46 min
Apr 8, 8:49 PM CDTSevere Thunderstorm WarningLZKJohnson51 min
Apr 8, 8:54 PM CDTSevere Thunderstorm WarningLZKLogan36 min
Apr 8, 9:12 PM CDTTornado WarningLZKScott33 min
Apr 8, 9:44 PM CDTTornado WarningLZKPope36 min
Apr 8, 9:48 PM CDTSevere Thunderstorm WarningLZKIzard, Stone47 min
Apr 8, 10:02 PM CDTTornado WarningLZKConway48 min
Apr 8, 10:13 PM CDTTornado WarningLZKPerry32 min
Apr 8, 10:15 PM CDTTornado WarningLZKSharp35 min
Apr 8, 10:22 PM CDTTornado WarningLZKVan Buren48 min
Apr 8, 10:42 PM CDTTornado WarningLZKCleburne48 min
Apr 8, 10:44 PM CDTSevere Thunderstorm WarningLZKFaulkner51 min
Apr 8, 11:03 PM CDTTornado WarningLZKFaulkner32 min
Apr 8, 11:09 PM CDTSevere Thunderstorm WarningLZKPulaski46 min
Apr 8, 11:27 PM CDTSevere Thunderstorm WarningLZKLonoke33 min
Apr 9, 12:04 AM CDTSevere Thunderstorm WarningLZKPrairie51 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.