Alert archive / Nebraska / Tornado Warnings in 1997

Tornado Warning 11, NWS Omaha, NE

July 5, 1997Cedar County, Wayne County, Nebraska

NWS Omaha, NE issued this tornado warning at Jul 5, 1997, 5:24 PM CDT for Cedar County, Wayne County, Nebraska. It was in force for 21 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 5, 1997, 5:24 PM CDT (22:24 UTC)
Expired
Jul 5, 1997, 5:45 PM CDT
In force
21 min
Issued by
NWS Omaha, NE
Area
Whole counties

Counties Cedar County, NE, Wayne County, NE

The radar

The Sioux Falls radar (KFSD), 137 km from the middle of the area, began a volume at 22:23 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 12:00Z, 10.4 hours before the alert went out and 138 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, Omaha, NE at 12:00Z on 1997-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 12:00Z on 1997-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1059 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
124 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.

881 
WFUS1 KOMA 052224
TOROMA
NEC027-179-052245-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
524 PM CDT SAT JUL 5 1997

* TORNADO WARNING FOR
  CEDAR COUNTY - IN NORTHEASTERN NEBRASKA
  WAYNE COUNTY - IN NORTHEASTERN NEBRASKA

* UNTIL 545 PM CDT
 
* SOME LOCATIONS AFFECTED

* AT 522 PM CDT...A TORNADO WAS REPORTED BY LAW ENFORCEMENT AND
SPOTTERS 27 MILES NORTH NORTHEAST OF NORFOLK OR 6 MILES EAST OF
RANDOLPH.
 
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.

LJH/MP

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 5, 6:51 PM CDTSevere Thunderstorm WarningOAXThurston49 min

Nearby

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