Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 2, NWS Cheyenne, WY

March 28, 1998Cheyenne County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Mar 28, 1998, 3:00 PM MST for Cheyenne County, Nebraska. It was in force for 40 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, 3:00 PM MST (22:00 UTC)
Expired
Mar 28, 1998, 3:40 PM MST
In force
40 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Cheyenne County, NE

The radar

The Cheyenne radar (KCYS), 152 km from the middle of the area, began a volume at 22:03 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

Denver, CO (KDNR), launched 12:00Z, 10.0 hours before the alert went out and 151 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 12:00Z on 1998-03-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 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 12:00Z on 1998-03-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 square meters per square second.1939587897117Sfc1 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
1602 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
164 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.

557 
WUUS1 KCYS 282204 RRA
SVRCYS
NEC033-282240-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
300 PM MST SAT MAR 28 1998


THE NATIONAL WEATHER SERVICE IN CHEYENNE WYOMING HAS ISSUED A 

* SEVERE THUNDERSTORM WARNING FOR
  CENTRAL AND SOUTHWEST CHEYENNE COUNTY IN THE NEBRASKA PANHANDLE

* UNTIL 340 PM MST

* AT 300 PM A SEVERE THUNDERSTORM WAS INDICATED BY RADAR 19 MILES 
  WEST OF SIDNEY...OR 6 MILES SOUTH OF POTTER MOVING NORTHEAST AT 
  15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BETWEEN I-80 MILE MARKERS 40 AND 44 BY 320 PM MST
  GURLEY  BY 345 PM MST

TAKE SHELTER INSIDE A STRONG BUILDING.  DO NOT  STAND BY WINDOWS.

SULLIVAN

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 28, 3:10 PM MSTSevere Thunderstorm WarningCYSSioux50 min
Mar 28, 3:50 PM MSTSevere Thunderstorm WarningCYSCheyenne45 min
Mar 28, 3:55 PM MSTSevere Thunderstorm WarningCYSScotts Bluff45 min
Mar 28, 4:00 PM MSTSevere Thunderstorm WarningCYSSioux60 min
Mar 28, 4:30 PM MSTSevere Thunderstorm WarningCYSCheyenne30 min
Mar 28, 4:40 PM MSTSevere Thunderstorm WarningCYSScotts Bluff45 min
Mar 28, 4:50 PM MSTSevere Thunderstorm WarningCYSCheyenne40 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.