Alert archive / Wyoming / Tornado Warnings in 2000

Tornado Warning 7, NWS Cheyenne, WY

May 16, 2000Platte County, Wyoming

NWS Cheyenne, WY issued this tornado warning at May 16, 2000, 9:03 PM MDT for Platte County, Wyoming. It was in force for 27 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 16, 2000, 9:03 PM MDT (03:03 UTC)
Expired: May 16, 2000, 9:30 PM MDT
In force: 27 min
Issued by: NWS Cheyenne, WY
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Platte County, WY

The radar

The Cheyenne radar (KCYS), 109 km from the middle of the area, began a volume at 03:07 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.

What was reported inside it

Time	Report	Where	Remark
May 16, 9:20 PM MDT	Hail 1	Wheatland, 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 watch it was issued in

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

Issued	Product	Office	Lasted
May 16, 5:00 PM MDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Rapid City, SD (KUNR), launched 00:00Z, 3.1 hours before the alert went out and 267 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: 2099 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 75 m²/s²
0-3 km storm-relative helicity: 285 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.

862 
WFUS55 KCYS 170303
TORCYS
WYC031-170330-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
903 PM MDT TUE MAY 16 2000

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL PLATTE COUNTY IN SOUTHEAST WYOMING

* UNTIL 930 PM MDT

* AT 902 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
POSSIBLE TORNADO 10 MILES EAST OF WHEATLAND...MOVING EAST AT 20 MPH.

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 1000 PM MDT TUESDAY EVENING 
FOR PARTS OF EASTERN WYOMING.

LAT...LON 4220 10491 4197 10490 4198 10466 4229 10467

EMANUEL

WCJIN-WYSE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 16, 6:29 PM MDT	Severe Thunderstorm Warning	CYS	Platte	31 min
May 16, 6:55 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	50 min
May 16, 7:05 PM MDT	Severe Thunderstorm Warning	CYS	Platte	40 min
May 16, 7:45 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	45 min
May 16, 8:30 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	45 min
May 16, 9:15 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	45 min
May 16, 10:00 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	45 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; radar from the NEXRAD Level II archive.