Alert archive / Kansas / Tornado Warnings in 2002

Tornado Warning 21, NWS Goodland, KS

August 31, 2002Cheyenne County, Kansas; Yuma County, Colorado

NWS Goodland, KS issued this tornado warning at Aug 31, 2002, 8:10 PM CDT for Cheyenne County, Kansas; Yuma County, Colorado. It was in force for 50 min. 3 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
Aug 31, 2002, 8:10 PM CDT (01:10 UTC)
Expired
Aug 31, 2002, 9:00 PM CDT
In force
50 min
Issued by
NWS Goodland, KS
Area
Counties, with a storm outline in the text

Counties Yuma County, CO, Cheyenne County, KS

The radar

The Goodland radar (KGLD), 67 km from the middle of the area, began a volume at 01:13 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
Aug 31, 8:35 PM CDTHail 1Idalia, CO
Aug 31, 8:52 PM CDTHail 1Wray, CO
Aug 31, 9:03 PM CDTHail 1Wray, CO

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

Denver, CO (KDNR), launched 00:00Z, 1.2 hours before the alert went out and 98 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, Denver, CO at 00:00Z on 2002-09-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 112 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 00:00Z on 2002-09-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 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
112 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
3767 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
1 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The office that day

Everything else NWS Goodland, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 31, 7:32 PM CDTSevere Thunderstorm WarningGLDCheyenne58 min
Aug 31, 9:00 PM CDTSevere Thunderstorm WarningGLDYuma30 min
Aug 31, 9:30 PM CDTSevere Thunderstorm WarningGLDYuma30 min
Aug 31, 10:15 PM CDTSevere Thunderstorm WarningGLDYuma45 min

Nearby

Tornado Warnings in Kansas, 2002Tornado Warnings in Colorado, 2002Every tornado warning in 2002Tornadoes in 2002

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.