Alert archive / Nebraska / Tornado Warnings in 1998

Tornado Warning 8, NWS North Platte, NE

May 19, 1998McPherson County, Nebraska

NWS North Platte, NE issued this tornado warning at May 19, 1998, 9:11 PM CDT for McPherson County, Nebraska. It was in force for 64 min. 1 report 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 19, 1998, 9:11 PM CDT (02:11 UTC)
Expired
May 19, 1998, 10:15 PM CDT
In force
64 min
Issued by
NWS North Platte, NE
Area
Whole counties

County McPherson County, NE

The radar

The North Platte radar (KLNX), 59 km from the middle of the area, began a volume at 02:15 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.

What was reported inside it

TimeReportWhereRemark
May 19, 9:40 PM CDTHail 1Ringgold, 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.

The watch it was issued in

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

IssuedProductOfficeLasted
May 19, 4:30 PM CDTTornado WatchSPC6 hr
May 19, 7:00 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.2 hours before the alert went out and 62 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, N. Platte/Lee Bi, NE at 00:00Z on 1998-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1851 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 1998-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 square meters per square second.19395878Sfc1 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
1851 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
1719 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.4
Supercell composite
8.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KLBF 200208 RRA
TORLBF
NEC117-200315-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
911 PM CDT TUE MAY 19 1998

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  MCPHERSON COUNTY IN WEST CENTRAL NEBRASKA

* UNTIL 1015 PM CDT

* AT 910 PM CDT... MCPHERSON COUNTY SHERIFF INDICATED A TORNADO
  33 MILES SOUTH OF MULLEN OR 9 MILES WEST OF TRYON MOVING EAST AT
  25 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  TRYON                        BY 930 PM CDT

THIS IS A DANGEROUS SITUATION! ACT QUICKLY! IT MAY SAVE YOUR LIFE!
MOVE TO A BASEMENT IF POSSIBLE. OTHERWISE...GO TO A SMALL INTERIOR
ROOM ON THE LOWEST FLOOR.  STAY AWAY FROM WINDOWS AND DOORS.

MTM

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 19, 7:09 PM CDTSevere Thunderstorm WarningLBFSheridan66 min
May 19, 7:28 PM CDTSevere Thunderstorm WarningLBFGrant62 min
May 19, 7:32 PM CDTSevere Thunderstorm WarningLBFGarden63 min
May 19, 7:38 PM CDTSevere Thunderstorm WarningLBFCherry, Grant, Hooker62 min
May 19, 7:51 PM CDTTornado WarningLBFCherry, Grant, Hooker64 min
May 19, 8:19 PM CDTTornado WarningLBFGarden66 min
May 19, 8:30 PM CDTTornado WarningLBFHooker65 min
May 19, 8:39 PM CDTSevere Thunderstorm WarningLBFArthur66 min
May 19, 8:52 PM CDTSevere Thunderstorm WarningLBFCherry63 min
May 19, 9:06 PM CDTSevere Thunderstorm WarningLBFMcPherson64 min
May 19, 9:13 PM CDTSevere Thunderstorm WarningLBFThomas67 min
May 19, 9:34 PM CDTSevere Thunderstorm WarningLBFLogan61 min
May 19, 9:44 PM CDTSevere Thunderstorm WarningLBFLincoln66 min
May 19, 10:17 PM CDTSevere Thunderstorm WarningLBFBlaine, Custer63 min
May 19, 10:20 PM CDTSevere Thunderstorm WarningLBFThomas35 min
May 19, 11:07 PM CDTSevere Thunderstorm WarningLBFWheeler63 min
May 19, 11:10 PM CDTSevere Thunderstorm WarningLBFCuster65 min
May 19, 11:43 PM CDTSevere Thunderstorm WarningLBFHolt62 min
May 19, 11:46 PM CDTSevere Thunderstorm WarningLBFChase64 min
May 20, 12:40 AM CDTSevere Thunderstorm WarningLBFChase50 min

Nearby

Tornado Warnings in Nebraska, 1998Every tornado warning in 1998Tornadoes in 1998

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.