Alert archive / Nebraska / Tornado Warnings in 1998

Tornado Warning 32, NWS North Platte, NE

July 6, 1998Brown County, Nebraska

NWS North Platte, NE issued this tornado warning at Jul 6, 1998, 2:17 PM CDT for Brown County, Nebraska. It was in force for 48 min. 3 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
Jul 6, 1998, 2:17 PM CDT (19:17 UTC)
Expired
Jul 6, 1998, 3:05 PM CDT
In force
48 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Brown County, NE

The radar

The North Platte radar (KLNX), 75 km from the middle of the area, began a volume at 19:18 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
Jul 6, 2:40 PM CDTTornado F0Ainsworth, NEBrief tornado touch down in open rangeland.
Jul 6, 2:55 PM CDTHail 0.88Ainsworth, NE
Jul 6, 3:00 PM CDTTornado F0Long Pine, NEBrief tornado touch down in open rangeland.

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
Jul 6, 2:15 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 7.3 hours before the alert went out and 155 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 12:00Z on 1998-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 967 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 12:00Z on 1998-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 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
967 J/kg
Mixed-layer CIN
-226 J/kg
Mixed-layer LCL
1761 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
77 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 KLBF 061912 RRA
TORLBF
NEC017-062005-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
217 PM CDT MON JUL 6 1998

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL BROWN COUNTY IN NORTH CENTRAL NEBRASKA

* UNTIL 305 PM CDT

* AT 215 PM CDT... NORTH PLATTE DOPPLER RADAR INDICATED A
  DEVELOPING TORNADO 16 MILES WEST OF AINSWORTH OR 5 MILES WEST
  SOUTHWEST OF JOHNSTOWN MOVING EAST SOUTHEAST AT 25 MPH.

* THE TORNADO IS EXPECTED TO BE JUST SOUTH OF...
  JOHNSTOWN                    BY 225 PM CDT
  AINSWORTH                    BY 250 PM CDT

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

SP

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 2:21 PM CDTSevere Thunderstorm WarningLBFBlaine49 min
Jul 6, 2:53 PM CDTSevere Thunderstorm WarningLBFRock62 min
Jul 6, 4:16 PM CDTFlash Flood WarningLBFBoyd3 hr

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.