Alert archive / Nebraska / Tornado Warnings in 1997

Tornado Warning 25, NWS North Platte, NE

August 13, 1997Custer County, Nebraska

NWS North Platte, NE issued this tornado warning at Aug 13, 1997, 5:53 PM CDT for Custer County, Nebraska. It was in force for 32 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: Aug 13, 1997, 5:53 PM CDT (22:53 UTC)
Expired: Aug 13, 1997, 6:25 PM CDT
In force: 32 min
Issued by: NWS North Platte, NE
Area: Whole counties

County Custer County, NE

The radar

The North Platte radar (KLNX), 94 km from the middle of the area, began a volume at 22:53 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
Aug 13, 6:00 PM CDT	Hail 0.75	Oconto, 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.

Issued	Product	Office	Lasted
Aug 13, 3:15 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.9 hours before the alert went out and 79 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: 95 J/kg
Mixed-layer CIN: -89 J/kg
Mixed-layer LCL: 834 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 177 m²/s²
0-3 km storm-relative helicity: 206 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLBF 132254 RRA
TORLBF
NEC041-132325-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
553 PM CDT WED AUG 13 1997

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE NE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 625 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN CENTRAL NEBRASKA

   ...SOUTHEASTERN CUSTER COUNTY
 
AT 552 PM CDT...A POSSIBLE TORNADO WAS INDICATED BY NORTH PLATTE
DOPPLER RADAR 19 MILES SOUTH SOUTHEAST OF BROKEN BOW OR 11 MILES
SOUTH SOUTHWEST OF ANSLEY MOVING EAST AT 15 MPH.

THE TORNADO IS EXPECTED TO REMAIN IN RURAL AREAS EAST AND SOUTHEAST
OF OCONTO.
 
IF YOU ARE IN THE PATH OF THIS TORNADO TAKE SHELTER IMMEDIATELY.
THE SAFEST PLACE IN A HOME OR BUSINESS IS AN INTERIOR ROOM ON THE
LOWEST FLOOR POSSIBLE. AVOID WINDOWS.

FS/MP

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 13, 12:53 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown	47 min
Aug 13, 1:37 PM CDT	Severe Thunderstorm Warning	LBF	Blaine	33 min
Aug 13, 2:10 PM CDT	Tornado Warning	LBF	Loup	30 min
Aug 13, 2:41 PM CDT	Severe Thunderstorm Warning	LBF	Loup	34 min
Aug 13, 2:55 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown	50 min
Aug 13, 2:59 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Logan	51 min
Aug 13, 3:49 PM CDT	Severe Thunderstorm Warning	LBF	Custer	61 min
Aug 13, 4:32 PM CDT	Severe Thunderstorm Warning	LBF	Loup	48 min
Aug 13, 4:50 PM CDT	Severe Thunderstorm Warning	LBF	Custer	60 min
Aug 13, 5:26 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Loup	64 min

Nearby

Tornado Warnings in Nebraska, 1997 Every tornado warning in 1997 Tornadoes in 1997

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.