Alert archive / Nebraska / Tornado Warnings in 1997

Tornado Warning 3, NWS Omaha, NE

May 7, 1997Gage County, Nebraska

NWS Omaha, NE issued this tornado warning at May 7, 1997, 4:21 PM CDT for Gage County, Nebraska. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 7, 1997, 4:21 PM CDT (21:21 UTC)
Expired: May 7, 1997, 5:00 PM CDT
In force: 39 min
Issued by: NWS Omaha, NE
Area: Whole counties

County Gage County, NE

The radar

The Omaha radar (KOAX), 121 km from the middle of the area, began a volume at 21:21 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 7, 2:00 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 9.4 hours before the alert went out and 121 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: 963 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 155 m²/s²
0-3 km storm-relative helicity: 202 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOMA 072121 RRA
TOROMA
NEC067-072200-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
421 PM CDT WED MAY 7 1997

* TORNADO WARNING FOR
  EXTREME NORTHERN GAGE COUNTY - IN SOUTHEASTERN NEBRASKA

* UNTIL 500 PM CDT
 
* THE FOLLOWING LOCATION IS IN THE PATH OF THIS TORNADO
  ADAMS                        BY AROUND 435 PM CDT

* AT 418 PM CDT...A DEVELOPING TORNADO WAS INDICATED BY DOPPLER
  RADAR AND SPOTTER REPORTS 18 MILES SOUTH OF LINCOLN OR 12 MILES
  WEST NORTHWEST OF ADAMS MOVING EAST AT 30 MPH.

A TORNADO WARNING IS ALSO IN EFFECT FOR SOUTHERN LANCASTER COUNTY
UNTIL 500 PM CDT.

 
PERSONS IN THE WARNED AREA SHOULD TAKE SHELTER IN A BASEMENT IF
AVAILABLE.  OTHERWISE GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR.  CARS AND MOBILE HOMES SHOULD BE ABANDONED.

CHERMOK

The office that day

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

Issued	Product	Office	Counties	Lasted
May 7, 4:49 AM CDT	Severe Thunderstorm Warning	OAX	Wayne	46 min
May 7, 3:01 PM CDT	Severe Thunderstorm Warning	OAX	Douglas	64 min
May 7, 3:58 PM CDT	Severe Thunderstorm Warning	OAX	Sarpy	47 min
May 7, 4:04 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Pawnee	61 min
May 7, 4:06 PM CDT	Severe Thunderstorm Warning	OAX	Nemaha	49 min
May 7, 4:09 PM CDT	Severe Thunderstorm Warning	OAX	Lancaster	66 min
May 7, 4:13 PM CDT	Tornado Warning	OAX	Lancaster	47 min
May 7, 4:29 PM CDT	Severe Thunderstorm Warning	OAX	Richardson	61 min
May 7, 4:40 PM CDT	Tornado Warning	OAX	Johnson, Otoe	65 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.