Alert archive / Nebraska / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 39, NWS Hastings, NE

June 15, 1997Sherman County, Valley County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Jun 15, 1997, 7:25 PM CDT for Sherman County, Valley County, Nebraska. It was in force for 50 min. 2 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 15, 1997, 7:25 PM CDT (00:25 UTC)
Expired
Jun 15, 1997, 8:15 PM CDT
In force
50 min
Issued by
NWS Hastings, NE
Area
Whole counties

Counties Sherman County, NE, Valley County, NE

The radar

The Grand Island radar (KUEX), 128 km from the middle of the area, began a volume at 00:25 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

TimeReportWhereRemark
Jun 15, 7:45 PM CDTHail 2.75Loup City, NE
Jun 15, 8:15 PM CDTHail 0.75Rockville, 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.4 hours before the alert went out and 139 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, N. Platte/Lee Bi, NE at 00:00Z on 1997-06-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 927 joules per kilogram.LCLEL10008507005003002001001 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, N. Platte/Lee Bi, NE at 00:00Z on 1997-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 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
927 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
2079 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
42 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 KGRI 160028 RRA
SVRGRI
NEC163-175-160115-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
725 PM CDT SUN JUN 15 1997
 
THE NATIONAL WEATHER SERVICE IN HASTINGS NE  HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  815 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL NEBRASKA
 
   ...SOUTHWESTERN SHERMAN COUNTY...VALLEY COUNTY
 
DOPPLER RADAR INDICATED A HAIL PRODUCING SEVERE THUNDERSTORM HEADED
TOWARD ARCADIA AND LOUP CITY AND THE SHERMAN RESERVOIR.  THE STORM
WILL REACH ARCADIA AROUND 730PM AND LOUP CITY BY 745PM.
 
THE STORM WAS LOCATED 60 MILES NORTHWEST OF GRAND ISLAND NORTH OF
WESTERVILLE AND WAS MOVING SOUTHEAST AT 30MPH.
 
DAMAGING THUNDERSTORM WINDS ARE ALSO POSSIBLE AS THIS STORM APPROACHES.
 
PEOPLE IN THE WARNED AREA SHOULD GET INTO A REINFORCED SHELTER FOR
PROTECTION FROM DAMAGING WINDS...LARGE HAIL...VERY HEAVY RAIN...AND
DANGEROUS LIGHTNING.
 
KD/LEW

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Hastings, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 15, 2:49 PM CDT, 4 hours 36 minutes earlier.

Area forecast discussion, Jun 15, 2:49 PM CDT, 4 hours 36 minutes before
CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
248 PM CDT SUN JUN 15 1997

MAIN QUESTION IS WHETHER THERE WILL BE ANY CONVECTION IN THE CWA WITH
FROPA.

18Z SFC CHART HAD COLD FRONT YKN-BBW-GLD WITH SEVERAL TROFS AHEAD OF IT.
UEX 88D HAD AT LEAST 5 BOUNDARIES SHOWING UP WHICH MAY OR MAY NOT TRIGGER
CONVECTION. 60+ DEW POINTS OVER MOST OF THE CWA WITH SLIGHTLY LESS
MOISTURE WORKING ITS WAY IN FROM THE NORTH AND WEST. ALOFT CLOSED LOW
REMAINS IN THE DESERT SW KICKING OUT PIECES OF ENERGY AND ANOTHER S/W
MOVING ACROSS THE NRN PLAINS.

HANDLING OF THE CLOSED LOW DIFFERNT IN THE MODELS TODAY WITH THE ETA
MOVING IT THE FASTEST TO THE EAST. THE NGM/AVN SIMILIAR IN ITS LOCATIONS
BUT THE NGM FILLS IT MORE THAN THE AVN. IN ANY EVENT NGM/AVN PATTERN
PREFERRED AND BY 48 HRS THE UPPER LOW PROGGED TO BE IN THE TX P/H.
AFTER NRN STREAM TROF PASSES THROUGH THE AREA THIS EVENING FLOW ALOFT
BECOMES NW ACROSS THE CWA. LOOKS LIKE FRONT HANGS UP IN SRN KS/OK AND
COULD BE SOME HEAVY RAINS OVER THE NEXT COUPLE OF DAYS BUT FEEL THIS
WILL BE ALL SOUTH OF THE HSA.

LOOKS TO ME LIKE THE HSI CWA IS PROBABLY OUT FROM UNDER THE GUN FOR ANY
SEVERE WX THIS EVENING BUT JUST TO THE EAST AND SOUTH WHEN THE FRONT
HITS THE 65 DEW POINTS IT COULD BE ANOTHER MATTER. PROBABLY COULD
HAVE A FEW ISOLATED TRW IN THE KS CWA TONIGHT BUT FOR THE MOST PART
THINK WE MAY HAVE MISSED OUT ON ANY BIG OUTBREAKS TODAY. SO CLOUDS
SHOULD BE SCATTER OUT TONIGHT AND THEN MAINLY FAIR WEATHER FOR THE
REMAINDER OF THE PERIOD. TEMPERATURES COOLER ON MONDAY BUT WARM UP
AGAIN ON TUESDAY.

GRI BB 060/081/064/084 -000
HBR BB 063/080/062/082 1000
ODX BB 058/080/060/081 -000
LXN BB 057/080/062/082 -000
BLT BB 065/082/066/085 3000

GRIFFITH

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 15, 8:18 PM CDTSevere Thunderstorm WarningGIDBuffalo, Howard, Sherman42 min
Jun 15, 8:18 PM CDTSevere Thunderstorm WarningGIDHall42 min
Jun 15, 9:02 PM CDTSevere Thunderstorm WarningGIDHall28 min
Jun 15, 9:53 PM CDTSevere Thunderstorm WarningGIDFurnas37 min
Jun 15, 10:34 PM CDTSevere Thunderstorm WarningGIDFurnas41 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1997Every 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.