Alert archive / Wyoming / Tornado Warnings in 2000

Tornado Warning 2, NWS Cheyenne, WY

May 7, 2000Niobrara County, Wyoming

NWS Cheyenne, WY issued this tornado warning at May 7, 2000, 2:27 PM MDT for Niobrara County, Wyoming. It was in force for 33 min. 1 report came from 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, with what was reported inside it.

The facts

Issued: May 7, 2000, 2:27 PM MDT (20:27 UTC)
Expired: May 7, 2000, 3:00 PM MDT
In force: 33 min
Issued by: NWS Cheyenne, WY
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Niobrara County, WY

What was reported inside it

Time	Report	Where	Remark
May 7, 2:59 PM MDT	Thunderstorm Wind 52 E	Redbird, WY

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Rapid City, SD (KUNR), launched 12:00Z, 8.5 hours before the alert went out and 156 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

709 
WFUS55 KCYS 072028
TORCYS
WYC027-072100-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
227 PM MDT SUN MAY 7 2000

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN NIOBRARA COUNTY IN EAST CENTRAL WYOMING

* UNTIL 300 PM MDT

* AT 219 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH A DEVELOPING TORNADO 13 MILES NORTH OF
  LANCE CREEK...MOVING EAST AT 30 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE REDBIRD

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

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

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

LAT...LON 4345 10481 4306 10475 4307 10408 4349 10407

DAUGHERTY

WCJIN-WYSE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 8:03 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	27 min
May 6, 8:08 PM MDT	Tornado Warning	CYS	Goshen	37 min
May 7, 3:01 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	44 min
May 7, 3:55 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	50 min

Nearby

Tornado Warnings in Wyoming, 2000 Every tornado warning in 2000 Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.