Alert archive / Nebraska / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 11, NWS Cheyenne, WY

May 24, 1997Kimball County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at May 24, 1997, 8:21 PM MDT for Kimball County, Nebraska. It was in force for 49 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
May 24, 1997, 8:21 PM MDT (02:21 UTC)
Expired
May 24, 1997, 9:10 PM MDT
In force
49 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Kimball County, NE

The radar

The Cheyenne radar (KCYS), 91 km from the middle of the area, began a volume at 02:22 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 00:00Z, 2.4 hours before the alert went out and 153 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 1997-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 72 joules per kilogram.LCLLFCEL10008507005003002001001 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 1997-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 181 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
72 J/kg
Mixed-layer CIN
-79 J/kg
Mixed-layer LCL
2164 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
181 m²/s²
0-3 km storm-relative helicity
211 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.0

Open this sounding in Storm Lab

The text

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

215 
WUUS1 KCYS 250222 RRA
SVRCYS
NEC105-250310-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
821 PM MDT SAT MAY 24 1997

* SEVERE THUNDERSTORM WARNING FOR
  SOUTHWESTERN KIMBALL COUNTY IN WESTERN NEBRASKA PANHANDLE

* UNTIL 910 PM MDT

* THIS STORM IS EXPECTED TO REMAIN IN RURAL AREAS.

* AT 819 PM MDT...A SEVERE THUNDERSTORM WAS LOCATEED 18 MILES
  SOUTHWEST OF KIMBALL OR 14 MILES.  THIS STORM WAS PRODUCING 
  HAIL UP TO 1.5 INCHES IN DIAMETER ALONG WITH VERY HEAVY RAINFALL. 
 
TAKE SHELTER INSIDE A STRONG BUILDING.  DO NOT STAND BY WINDOWS.

&
DMM

The office that day

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

IssuedProductOfficeCountiesLasted
May 24, 7:10 PM MDTFlash Flood WarningCYSBoyd4 hr
May 24, 7:22 PM MDTSevere Thunderstorm WarningCYSKimball48 min
May 24, 7:37 PM MDTTornado WarningCYSBanner, Kimball33 min
May 24, 7:43 PM MDTTornado WarningCYSBanner, Kimball27 min
May 24, 9:09 PM MDTFlash Flood WarningCYSBanner, Scotts Bluff111 min
May 24, 11:00 PM MDTFlash Flood WarningCYSKimball4 hr

Nearby

Severe Thunderstorm Warnings in Nebraska, 1997Every severe thunderstorm warning in 1997

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.