Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 34, NWS Cheyenne, WY

May 19, 1998Dawes County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at May 19, 1998, 6:09 PM MDT for Dawes County, Nebraska. It was in force for 46 min. 1 report 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
May 19, 1998, 6:09 PM MDT (00:09 UTC)
Expired
May 19, 1998, 6:55 PM MDT
In force
46 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Dawes County, NE

What was reported inside it

TimeReportWhereRemark
May 19, 6:10 PM MDTHail 1.75Marsland, NEA storm produced golf ball size hail in Marsland.

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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.2 hours before the alert went out and 274 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, N. Platte/Lee Bi, NE at 00:00Z on 1998-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1851 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, N. Platte/Lee Bi, NE at 00:00Z on 1998-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 square meters per square second.19395878Sfc1 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
1851 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
1719 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.4
Supercell composite
8.7

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 Cheyenne, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 19, 6:27 PM MDTSevere Thunderstorm WarningCYSMorrill33 min
May 19, 6:38 PM MDTSevere Thunderstorm WarningCYSDawes32 min
May 19, 6:56 PM MDTSevere Thunderstorm WarningCYSCheyenne29 min
May 19, 7:26 PM MDTSevere Thunderstorm WarningCYSCheyenne44 min
May 19, 9:19 PM MDTSevere Thunderstorm WarningCYSMorrill31 min
May 19, 9:39 PM MDTSevere Thunderstorm WarningCYSCheyenne31 min
May 20, 4:13 PM MDTSevere Thunderstorm WarningCYSSioux32 min
May 20, 4:46 PM MDTSevere Thunderstorm WarningCYSScotts Bluff34 min
May 20, 5:28 PM MDTSevere Thunderstorm WarningCYSMorrill32 min
May 20, 3:31 PM MDTTornado WarningCYSNiobrara14 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1998Every severe thunderstorm warning in 1998

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.