Alert archive / Nebraska / Tornado Warnings in 1997

Tornado Warning 15, NWS Omaha, NE

July 7, 1997Madison County, Nebraska

NWS Omaha, NE issued this tornado warning at Jul 7, 1997, 7:01 PM CDT for Madison County, Nebraska. It was in force for 29 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: Jul 7, 1997, 7:01 PM CDT (00:01 UTC)
Expired: Jul 7, 1997, 7:30 PM CDT
In force: 29 min
Issued by: NWS Omaha, NE
Area: Whole counties

County Madison County, NE

The radar

The Omaha radar (KOAX), 122 km from the middle of the area, began a volume at 00:04 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 nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.0 hours before the alert went out and 122 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: 1901 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1492 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 154 m²/s²
0-3 km storm-relative helicity: 328 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 13.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOMA 080000 RRA
TOROMA
NEC119-080030-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
701 PM CDT MON JUL 7 1997

* TORNADO WARNING FOR
  MADISON COUNTY - IN NORTHEASTERN NEBRASKA

* UNTIL 730 PM CDT
 
* SOME LOCATIONS AFFECTED
  RURAL AREAS SOUTH OF NORFOLK

* AT 659 PM CDT...A POSSIBLE TORNADO WAS INDICATED BY DOPPLER RADAR
  AND SPOTTER REPORTS 2 MILES EAST OF BATTLE CREEK MOVING EAST
  SOUTHEAST AT 15 MPH.

 FUNNEL CLOUDS WERE REPORTED 2 MILES EAST OF BATTLE CREEK AND 4 MILES
 WEST OF STANTON.
 
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.
GW

&

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 7:15 PM CDT	Tornado Warning	OAX	Stanton	45 min
Jul 7, 7:23 PM CDT	Tornado Warning	OAX	Cuming	47 min
Jul 7, 7:30 PM CDT	Severe Thunderstorm Warning	OAX	Platte	65 min
Jul 7, 7:38 PM CDT	Severe Thunderstorm Warning	OAX	Colfax	62 min
Jul 7, 7:55 PM CDT	Tornado Warning	OAX	Colfax	50 min
Jul 7, 8:21 PM CDT	Severe Thunderstorm Warning	OAX	Dodge	64 min
Jul 7, 8:59 PM CDT	Flash Flood Warning	OAX	Colfax, Dodge	6 hr
Jul 7, 9:18 PM CDT	Severe Thunderstorm Warning	OAX	Butler	62 min
Jul 7, 9:48 PM CDT	Severe Thunderstorm Warning	OAX	Saunders	62 min
Jul 7, 10:07 PM CDT	Severe Thunderstorm Warning	OAX	Douglas, Sarpy	48 min
Jul 7, 10:10 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Sarpy	50 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.