Alert archive / Nebraska / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 177, NWS North Platte, NE

July 7, 1996Keith County, McPherson County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 7, 1996, 7:38 PM MDT for Keith County, McPherson County, Nebraska. It was in force for 62 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: Jul 7, 1996, 7:38 PM MDT (01:38 UTC)
Expired: Jul 7, 1996, 8:40 PM MDT
In force: 62 min
Issued by: NWS North Platte, NE
Area: Whole counties

Counties Keith County, NE, McPherson County, NE

The radar

The North Platte radar (KLNX), 91 km from the middle of the area, began a volume at 01:38 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	Remark
Jul 7, 7:45 PM MDT	Hail 1.5	Paxton, NE
Jul 7, 8:00 PM MDT	Hail 1.75	Tryon, 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, 1.6 hours before the alert went out and 70 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: 1066 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 1723 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 168 m²/s²
0-3 km storm-relative helicity: 377 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 12.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLBF 080139
SVRLBF
NEC101-117-080240-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
838 PM CDT (738 PM MDT) SUN JUL 7 1996

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE NE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 840 PM MDT (940 PM CDT)
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHWEST NEBRASKA

   ...NORTHEASTERN KEITH COUNTY

IN WEST CENTRAL NEBRASKA

   ...WESTERN MCPHERSON COUNTY
 
AT 736 PM MDT (836 PM CDT)...A SEVERE THUNDERSTORM WAS INDICATED BY
NORTH PLATTE DOPPLER RADAR 31 MILES NORTH NORTHEAST OF OGALLALA OR 4
MILES SOUTHWEST OF FLATS MOVING EAST SOUTHEAST AT 23 MPH. ANOTHER
SEVERE THUNDERSTORM WAS LOCATED 14 MILES NORTHEAST OF OGALLALA
MOVING SOUTHEAST AT 30 MPH.

DAMAGING HAIL AND/OR DESTRUCTIVE WINDS CAN BE EXPECTED IN THE
VICINITY OF...   FLATS                        BY 847 PM CDT
VICINITY OF... KEYSTONE                       BY 900 PM CDT (800 PM
MDT)


 A TORNADO WATCH IS ALSO IN EFFECT.  SEVERE THUNDERSTORMS CAN
PRODUCE TORNADOES.
 
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH
LITTLE OR NO ADVANCE WARNING. IF YOU ARE IN THE PATH OF THIS STORM
YOU SHOULD MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE.

MICHELS

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.

In the hours before

Special weather statement, Jul 7, 1:55 PM MDT, 5 hours 43 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTH PLATTE NE
255 PM CDT SUN JUL 7 1996

...MAIN CONCERN IS TSTMS...HOW LONG AND HOW BAD...
TSTMS ALREADY FIRING OVR SW SD AND MOVG TO THE SOUTHEAST AND ALREADY
SVR. THESE TSTMS ON THE NOSE OF HIGH DEW PT AXIS AND STORMS MAY
DMNSH AS THEY MOVE INTO SLIGHTLY DRIER AIR.  WOULD EXPECT THE MAIN
THREAT TO COME LATER THIS EVENING OR EARLY TNGT WHEN SFC FRONT MOVES
INTO THE REGION.  COLD FRONT DEVELPING OVR ND-ERN MT THIS AFTN AND SHD
QUICKLY DROP INTO TROF FROM ERN SD INTO NWRN NE.  MOIST...UNSTABLE AIR
IN PLACE AHEAD OF FRONT WITH UPSLOPE CONTINUING.  NGM WOULD LOCATE FRONT
FROM VTN TO LBF BY 06Z.  88D VAD INDICATES PROFILE BECOMING MORE FAVORABLE
FOR SUPERCELL/ORGANIZED SVR.

GOING FCST FOR TNGT LOOKS GOOD...POPS MAYBE A LITTLE STRONG.  GOTTA GO...
SVR TSTMS APPROACHING CWA.

GEB

Local storm report, Jul 7, 6:07 PM MDT, 1 hour 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
707 PM CDT SUN JUL 7 1996

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0530 PM    MERRITT RESERVOIR         NE   TORNADO
07/07/96   CHERRY                         2 PUBLIC REPORTS OF ONE
                                          TORNADO NEAR NORTH SHORE
                                          OF MERRITT RESERVOIR.

JRS

Local storm report, Jul 7, 6:24 PM MDT, 1 hour 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
723 PM CDT SUN JUL 7 1996

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0715 PM    3 ENE ELSMERE             NE   0.88 INCH HAIL
07/07/96   BROWN

JRS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 6:09 PM MDT	Severe Thunderstorm Warning	LBF	Logan	66 min
Jul 7, 6:31 PM MDT	Tornado Warning	LBF	Logan	49 min
Jul 7, 6:35 PM MDT	Tornado Warning	LBF	McPherson	50 min
Jul 7, 6:45 PM MDT	Severe Thunderstorm Warning	LBF	Keith	65 min
Jul 7, 6:51 PM MDT	Tornado Warning	LBF	Lincoln	49 min
Jul 7, 7:02 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Grant	63 min
Jul 7, 7:41 PM MDT	Tornado Warning	LBF	Lincoln	64 min
Jul 7, 7:50 PM MDT	Severe Thunderstorm Warning	LBF	Custer	65 min
Jul 7, 8:27 PM MDT	Tornado Warning	LBF	Frontier	63 min
Jul 7, 8:35 PM MDT	Tornado Warning	LBF	Lincoln	35 min
Jul 7, 8:48 PM MDT	Severe Thunderstorm Warning	LBF	Keith	62 min
Jul 7, 9:00 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	65 min
Jul 7, 9:13 PM MDT	Severe Thunderstorm Warning	LBF	Hayes	62 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1996 Every severe thunderstorm warning in 1996

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.