Alert archive / Nebraska / Tornado Warnings in 1990

Tornado Warning 1, NWS Cheyenne, WY

May 13, 1990Morrill County, Nebraska

NWS Cheyenne, WY issued this tornado warning at May 13, 1990, 1:22 PM MDT for Morrill County, Nebraska. It was in force for 38 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 13, 1990, 1:22 PM MDT (19:22 UTC)
Expired: May 13, 1990, 2:00 PM MDT
In force: 38 min
Issued by: NWS Cheyenne, WY
Area: Whole counties

County Morrill County, NE

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

Time	Report	Where	Remark
May 13, 1:23 PM MDT	Tornado F0	Morrill, NE
May 13, 1:23 PM MDT	Tornado F0	Morrill, NE

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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 7.4 hours before the alert went out and 206 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: 1480 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 161 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 KBFF 131922
TORBFF
NEC123-132000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
122 PM MDT SUN MAY 13 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 200 PM MDT FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE PANHANDLE OF NEBRASKA
      MORRILL

AT 118 PM MDT A TORNADO WAS SIGHTED NEAR REDINGTON OR 12 MILES
SOUTHWEST OF BRIDGEPORT NEBRASKA IN THE CENTRAL NEBRASKA PANHANDLE.

TAKE SHELTER IN A BASEMENT IF AVAILABLE.  OTHERWISE GO TO A SMALL
INTERIOR ROOM ON THE LOWEST FLOOR.  STAY AWAY FROM WINDOWS.  ABANDON
CARS AND MOBILE HOMES.

DO NOT TRY TO OUTRUN A TORNADO IN A CAR.  CARS ARE EASILY TOSSED
AROUND BY TORNADOES.  IF YOU ARE CAUGHT IN THE PATH OF A TORNADO...
LEAVE THE CAR AND GO TO A REINFORCED BUILDING.  IF NO STRUCTURE IS
NEARBY...TAKE SHELTER IN A DITCH OR LOW SPOT AWAY FROM THE VEHICLE.

KIRK

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 2:01 PM MDT	Severe Thunderstorm Warning	CYS	Garden	59 min
May 13, 2:25 PM MDT	Tornado Warning	CYS	Garden	35 min
May 13, 3:02 PM MDT	Severe Thunderstorm Warning	CYS	Cheyenne, Morrill	58 min
May 13, 3:49 PM MDT	Severe Thunderstorm Warning	CYS	Garden	56 min
May 13, 3:58 PM MDT	Tornado Warning	CYS	Garden	32 min
May 13, 4:24 PM MDT	Tornado Warning	CYS	Deuel, Garden	36 min

Nearby

Tornado Warnings in Nebraska, 1990 Every tornado warning in 1990 Tornadoes in 1990

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.