Alert archive / Nebraska / Tornado Warnings in 2000

Tornado Warning 6, NWS Cheyenne, WY

May 7, 2000Box Butte County, Nebraska

NWS Cheyenne, WY issued this tornado warning at May 7, 2000, 5:10 PM MDT for Box Butte County, Nebraska. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
May 7, 2000, 5:10 PM MDT (23:10 UTC)
Expired
May 7, 2000, 5:45 PM MDT
In force
35 min
Issued by
NWS Cheyenne, WY
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Box Butte County, NE

The radar

The Cheyenne radar (KCYS), 175 km from the middle of the area, began a volume at 23:13 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 7, 2:30 PM MDTTornado WatchSPC6 hr

The nearest sounding before it

Rapid City, SD (KUNR), launched 12:00Z, 11.2 hours before the alert went out and 212 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 12:00Z on 2000-05-07Temperature 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 12:00Z on 2000-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.1939587897Sfc1 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
794 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
115 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.

626 
WFUS55 KCYS 072314 RRA
TORCYS
NEC013-080000-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
510 PM MDT SUN MAY 7 2000

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN BOX BUTTE COUNTY IN THE PANHANDLE OF NEBRASKA

* UNTIL 545 PM MDT

* AT 508 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A SEVERE THUNDERSTORM 15 MILES SOUTHWEST OF BEREA...MOVING EAST 
  AT 20 MPH.  THIS SEVERE THUNDERSTORM WILL PRODUCE DIME SIZE HAIL 
  AND WINDS IN EXCESS OF 60 MPH AND A POSSIBLE TORNADO.

FUNNEL CLOUDS HAVE BEEN REPORTED WITH THIS SEVERE STORM IN NORTHEAST
SCOTTS BLUFF COUNTY.  A BRIEF TORNADO TOUCHDOWN IS POSSIBLE WITH THIS
STORM. 

THIS WARNING DOES NOT INCLUDE ALLIANCE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM MDT THIS EVENING FOR 
THE PANHANDLE OF NEBRASKA AND EAST CENTRAL WYOMING.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE.

LAT...LON 4222 10341 4203 10332 4202 10291 4239 10299

WEILAND

The office that day

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

IssuedProductOfficeCountiesLasted
May 6, 8:40 PM MDTSevere Thunderstorm WarningCYSScotts Bluff, Sioux35 min
May 6, 9:11 PM MDTSevere Thunderstorm WarningCYSScotts Bluff, Sioux34 min
May 6, 9:42 PM MDTSevere Thunderstorm WarningCYSMorrill, Scotts Bluff48 min
May 6, 9:45 PM MDTSevere Thunderstorm WarningCYSSioux30 min
May 6, 10:18 PM MDTSevere Thunderstorm WarningCYSBox Butte27 min
May 6, 10:44 PM MDTSevere Thunderstorm WarningCYSBox Butte46 min
May 6, 11:11 PM MDTSevere Thunderstorm WarningCYSMorrill34 min
May 6, 11:57 PM MDTSevere Thunderstorm WarningCYSBox Butte48 min
May 7, 12:35 AM MDTSevere Thunderstorm WarningCYSMorrill15 min
May 7, 3:10 PM MDTSevere Thunderstorm WarningCYSKimball35 min
May 7, 3:32 PM MDTTornado WarningCYSKimball28 min
May 7, 3:55 PM MDTSevere Thunderstorm WarningCYSSioux50 min
May 7, 3:59 PM MDTTornado WarningCYSKimball31 min
May 7, 4:13 PM MDTSevere Thunderstorm WarningCYSMorrill47 min
May 7, 4:23 PM MDTTornado WarningCYSScotts Bluff37 min
May 7, 4:25 PM MDTSevere Thunderstorm WarningCYSCheyenne50 min
May 7, 4:50 PM MDTSevere Thunderstorm WarningCYSBox Butte25 min
May 7, 5:01 PM MDTSevere Thunderstorm WarningCYSMorrill44 min
May 7, 5:16 PM MDTSevere Thunderstorm WarningCYSCheyenne44 min

Nearby

Tornado Warnings in Nebraska, 2000Every tornado warning in 2000Tornadoes in 2000

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.