Alert archive / Nebraska / Tornado Warnings in 2003

Tornado Warning 9, NWS Cheyenne, WY

May 3, 2003Morrill County, Nebraska

NWS Cheyenne, WY issued this tornado warning at May 3, 2003, 5:13 PM MDT for Morrill County, Nebraska. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 3, 2003, 5:13 PM MDT (23:13 UTC)
Expired: May 3, 2003, 5:45 PM MDT
In force: 32 min
Issued by: NWS Cheyenne, WY
Area: Counties, with a storm outline in the text

County Morrill County, NE

The radar

The Cheyenne radar (KCYS), 178 km from the middle of the area, began a volume at 23:15 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.

Issued	Product	Office	Lasted
May 3, 4:10 PM MDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.2 hours before the alert went out and 207 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: 15 J/kg
Mixed-layer CIN: -313 J/kg
Mixed-layer LCL: 736 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 231 m²/s²
0-3 km storm-relative helicity: 264 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.

156 
WFUS55 KCYS 032313
TORCYS
NEC123-032345-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
513 PM MDT SAT MAY 3 2003

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN MORRILL COUNTY IN THE PANHANDLE OF NEBRASKA

* UNTIL 545 PM MDT

* AT 510 PM MDT...WEATHER SPOTTERS REPORTED A TORNADO OVER
  NORTHEAST MORRILL COUNTY...OR ABOUT 17 MILES SOUTH OF ALLIANCE...  
  MOVING NORTHEAST 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 900 PM MDT SATURDAY EVENING
FOR THE PANHANDLE OF NEBRASKA.

LAT...LON 4178 10303 4179 10266 4198 10270 4199 10303

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 3:11 PM MDT	Severe Thunderstorm Warning	CYS	Scotts Bluff, Sioux	34 min
May 3, 3:47 PM MDT	Tornado Warning	CYS	Morrill, Scotts Bluff	28 min
May 3, 4:14 PM MDT	Tornado Warning	CYS	Morrill	31 min
May 3, 4:46 PM MDT	Tornado Warning	CYS	Morrill	29 min
May 3, 5:35 PM MDT	Tornado Warning	CYS	Morrill, Scotts Bluff	40 min

Nearby

Tornado Warnings in Nebraska, 2003 Every tornado warning in 2003 Tornadoes in 2003

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.