Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 10, NWS Cheyenne, WY

March 28, 1998Box Butte County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Mar 28, 1998, 5:40 PM MST for Box Butte County, Nebraska. It was in force for 30 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
Mar 28, 1998, 5:40 PM MST (00:40 UTC)
Expired
Mar 28, 1998, 6:10 PM MST
In force
30 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Box Butte County, NE

The radar

The Cheyenne radar (KCYS), 186 km from the middle of the area, began a volume at 00:40 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

Rapid City, SD (KUNR), launched 00:00Z, 0.7 hours before the alert went out and 206 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, Rapid City, SD at 00:00Z on 1998-03-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Rapid City, SD at 00:00Z on 1998-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
549 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
166 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

756 
WUUS1 KCYS 290142
SVRCYS
NEC013-290205-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
640 PM MDT SUN MAR 28 1998


THE NATIONAL WEATHER SERVICE IN CHEYENNE WYOMING HAS ISSUED A 

* SEVERE THUNDERSTORM WARNING FOR
  SOUTHEAST AND EASTCENTRAL BOX BUTTE COUNTY IN THE NEBRASKA PANHANDLE

* UNTIL 710 PM MDT

* AT 634 PM A SEVERE THUNDERSTORM WAS OVER ALLIANCE.  AT THAT TIME THE HAIL UP   
TO ONE INCH IN DIAMETER WAS REPORTED IN ALLIANCE AND  7 MILES SOUTH
OF ALLIANCE.  

* THE SEVERE THUNDERSTORM WILL AFFECT THE CITY OF ALLIANCE. 

LARGE HAIL IS LIKELY WITH THIS STORM.  SEEK SHELTER INSIDE A 
STURDY BUILDING AWAY FROM ALL WINDOWS UNTIL THE STORM PASSES.

&
WEILAND

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 28, 7:10 PM MSTSevere Thunderstorm WarningCYSBanner, Scotts Bluff40 min
Mar 28, 7:59 PM MSTSevere Thunderstorm WarningCYSBox Butte41 min
Mar 28, 8:35 PM MSTSevere Thunderstorm WarningCYSScotts Bluff, Sioux40 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.