Alert archive / Nebraska / Tornado Warnings in 1997

Tornado Warning 21, NWS Cheyenne, WY

June 25, 1997Banner County, Nebraska

NWS Cheyenne, WY issued this tornado warning at Jun 25, 1997, 1:26 PM MDT for Banner County, Nebraska. It was in force for 34 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
Jun 25, 1997, 1:26 PM MDT (19:26 UTC)
Expired
Jun 25, 1997, 2:00 PM MDT
In force
34 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Banner County, NE

The radar

The Cheyenne radar (KCYS), 101 km from the middle of the area, began a volume at 19:28 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, 7.4 hours before the alert went out and 191 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 1997-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 51 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 12:00Z on 1997-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 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
51 J/kg
Mixed-layer CIN
-211 J/kg
Mixed-layer LCL
1628 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
122 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.

000 
TTAA00 KCYS 251926 RRA
TORCYS
NEC007-252000-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
126 PM MDT WED JUN 25 1997

* TORNADO WARNING FOR
  CENTRAL AND EASTERN BANNER COUNTY IN WESTERN NEBRASKA PANHANDLE

* UNTIL 200 PM MDT

* SOME AFFECTED LOCATIONS INCLUDE
  THESE STORMS ARE EXPECTED TO REMAIN IN RURAL AREAS

* AT 123 PM MDT...DOPPLER RADAR IN CHEYENNE SHOWED A CLUSTER OF SEVERE
  THUNDERSTORMS IN CENTRAL BANNER COUNTY...ALONG HIGHWAY 71 EAST OF
  HARRISBURG. THESE STORMS HAVE PRODUCED 3/4 INCH HAIL AND AT LEAST
  TWO FUNNEL CLOUDS IN ADDITION TO A BRIEF TORNADO.

  THIS WARNING REPLACES THE PREVIOUS WARNING THAT EXPIRED AT 125 PM.
 
 
NEVER TRY TO OUTRUN A TORNADO IN YOUR VEHICLE!  STOP...GET OUT...AND
SEEK SHELTER IN A BASEMENT OR LIE FLAT IN A DITCH AND COVER YOUR HEAD.

&
SULLIVAN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 25, 12:54 PM MDTTornado WarningCYSBanner, Scotts Bluff31 min
Jun 25, 1:47 PM MDTSevere Thunderstorm WarningCYSKimball43 min
Jun 25, 1:54 PM MDTTornado WarningCYSKimball36 min
Jun 25, 2:13 PM MDTSevere Thunderstorm WarningCYSCheyenne, Morrill32 min
Jun 25, 2:29 PM MDTSevere Thunderstorm WarningCYSKimball46 min
Jun 25, 2:33 PM MDTTornado WarningCYSCheyenne27 min
Jun 25, 2:44 PM MDTSevere Thunderstorm WarningCYSCheyenne31 min

Nearby

Tornado Warnings in Nebraska, 1997Every tornado warning in 1997Tornadoes 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.