Alert archive / Nebraska / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 34, NWS North Platte, NE

July 7, 1987Lincoln County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 7, 1987, 12:20 AM CDT for Lincoln County, Nebraska. It was in force for 55 min.

The area

The counties it named.

The facts

Issued: Jul 7, 1987, 12:20 AM CDT (05:20 UTC)
Expired: Jul 7, 1987, 1:15 AM CDT
In force: 55 min
Issued by: NWS North Platte, NE
Area: Whole counties

County Lincoln County, NE

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 5.3 hours before the alert went out and 15 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: 4064 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 1720 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 175 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 18.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLBF 070520
SVRLBF
NEC111-070615-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1220 AM CDT TUE JUL 7 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 115 AM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

SOUTHWEST NEBRASKA...EASTERN LINCOLN

RADAR INDICATES A SEVERE THUNDERSTORM 5 MILES NORTHEAST OF
NORTH PLATTE NEBRASKA MOVING NORTHEAST AT 20 MPH.

IF THREATENING WEATHER APPROACHES...GET TO A REINFORCED SHELTER AND
PREPARE FOR STRONG DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN AND
DANGEROUS LIGHTNING.  REMEMBER...THESE STORMS CAN AND OCCASIONALLY
DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING...SO BE ON
THE LOOKOUT!!

REPORTS OF SEVERE WEATHER OR DAMAGE CAN BE GIVEN TO A LAW
ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH...
LARGE HAIL GREATER THAN 3/4 INCH IN DIAMETER...DEADLY LIGHTNING
AND VERY HEAVY RAIN THAT CAN FLOOD A LOW LYING AREA QUICKLY.

CARPER 0519Z

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

Local storm report, Jul 6, 7:56 PM CDT, 4 hours 24 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE VALENTINE NE
745 PM CDT MON JUL 6 1987

SELS MKC OMA A VTN

TIME
620PM     CDT  PEA AND MARBLE SIZE HAIL AT MERRITT
               RESERVOIR.

635PM     CDT  PEA SIZE HAIL AT WSO VALENTINE.

730PM     CDT  TORNADO DESTROYED A BARN ON THE BRUCE REYMAN RANCH
               LOCATED 9 MILES WEST AND 6 MILES NORTH OF WOOD LAKE.
               Z
RODDA

Special weather statement, Jul 6, 11:55 PM CDT, 25 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1050 PM CDT MON JUL 6 1987

...SEVERE THUNDERSTORM WATCH FOR CUSTER COUNTY UNTIL 4 AM CDT
   TUESDAY MORNING...

INTENSE THUNDERSTORMS WERE CONTINUING TO DEVELOP OVER LINCOLN COUNTY OF
SOUTHWEST NEBRASKA MAINLY IN THE NORTH PLATTE AREA.  THE MOST INTENSE
THUNDERSTORM WAS LOCATED ABOUT 5 MILES NORTH OF NORTH PLATTE WITH PEA
SIZE HAIL...HEAVY RAIN AND WINDS OF 15 TO 20 MILES AN HOUR.

OTHER STRONG THUNDERSTORMS WERE SCATTERED ACROSS SOUTHWEST NEBRASKA AND
NEW THUNDERSTORMS WERE CONTINUING TO DEVELOP ACROSS PORTIONS OF KEITH COUNTY
IN THE OGALLALA AREA.

THESE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 20 MILES AN HOUR.
MONSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 8:08 PM CDT	Tornado Warning	LBF	Arthur, Keith	67 min
Jul 6, 8:12 PM CDT	Severe Thunderstorm Warning	LBF	Arthur	48 min
Jul 6, 8:25 PM CDT	Severe Thunderstorm Warning	LBF	Perkins	55 min
Jul 6, 11:15 PM CDT	Severe Thunderstorm Warning	LBF	Cedar, Knox	60 min
Jul 6, 11:47 PM CDT	Severe Thunderstorm Warning	LBF	Stanton, Wayne	43 min
Jul 7, 12:13 AM CDT	Severe Thunderstorm Warning	LBF	Platte	47 min
Jul 7, 12:36 AM CDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln	69 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1987 Every severe thunderstorm warning in 1987

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.