Alert archive / Nebraska / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 21, NWS Hastings, NE

June 11, 1997Hamilton County, York County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Jun 11, 1997, 1:15 PM CDT for Hamilton County, York County, Nebraska. It was in force for 45 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: Jun 11, 1997, 1:15 PM CDT (18:15 UTC)
Expired: Jun 11, 1997, 2:00 PM CDT
In force: 45 min
Issued by: NWS Hastings, NE
Area: Whole counties

Counties Hamilton County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 81 km from the middle of the area, began a volume at 18:15 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
Jun 11, 1:40 PM CDT	Hail 1.5	Stockham, NE
Jun 11, 1:44 PM CDT	Thunderstorm Wind 60	Hampton, NE
Jun 11, 1:55 PM CDT	Hail 1.25	Henderson, 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 nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 6.3 hours before the alert went out and 130 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: 81 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 1086 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 8 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 KGRI 111815 RRA
SVRGRI
NEC185-081-111900-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
115 PM CDT WED JUN 11 1997
 
THE NATIONAL WEATHER SERVICE IN HASTINGS NE  HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  200 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL NEBRASKA
 
   ...WESTERN YORK COUNTY
 
IN SOUTH CENTRAL NEBRASKA
 
   ...SOUTHERN HAMILTON COUNTY
 
PEOPLE IN AND NEAR HENDERSON SHOULD SEEK SHELTER INDOORS NOW. AT 110
A SEVERE THUNDERSTORM WAS 20 MILES SOUTHEAST OF GRAND ISLAND OR 5 MILES
SOUTHWEST OF AURORA.  MOVEMENT WAS EAST AT 25 MILES AN HOUR.  THE STORM
WILL LIKELY PRODUCE HAIL OF ONE INCH IN DIAMETER AS IT TRACKS ALONG I
80.  IT SHOULD REACH HENDERSON AROUND 130.
 
 
PERSONS DRIVING IN THE WARNED AREA SHOULD WATCH OUT FOR WATER OVER
ROADS...IN UNDERPASSES AND NEAR SMALL STREAMS.
 
DROZD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 1:55 PM CDT	Severe Thunderstorm Warning	GID	Fillmore, York	50 min
Jun 11, 2:14 PM CDT	Tornado Warning	GID	Fillmore	31 min
Jun 11, 5:23 PM CDT	Severe Thunderstorm Warning	GID	Valley	52 min
Jun 11, 6:03 PM CDT	Severe Thunderstorm Warning	GID	Dawson	42 min
Jun 11, 6:18 PM CDT	Severe Thunderstorm Warning	GID	Sherman, Valley	42 min
Jun 11, 6:33 PM CDT	Severe Thunderstorm Warning	GID	Gosper	42 min
Jun 11, 6:55 PM CDT	Tornado Warning	GID	Sherman	50 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1997 Every severe thunderstorm warning 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.