Alert archive / Nebraska / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 50, NWS North Platte, NE

July 10, 1987Cherry County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 10, 1987, 6:08 PM MDT for Cherry County, Nebraska. It was in force for 52 min. 1 report 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 10, 1987, 6:08 PM MDT (00:08 UTC)
Expired
Jul 10, 1987, 7:00 PM MDT
In force
52 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Cherry County, NE

The radar

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

What was reported inside it

TimeReportWhereRemark
Jul 10, 6:30 PM MDTHail 0.75Cherry, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.1 hours before the alert went out and 163 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 1987-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3373 joules per kilogram.LCLLFCEL10008507005003002001001 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 1987-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
3373 J/kg
Mixed-layer CIN
-98 J/kg
Mixed-layer LCL
1858 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
113 m²/s²
Significant tornado parameter
0.1
Supercell composite
6.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBFF 110010 COR
SVRVTN
NEC031-110100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED
NATIONAL WEATHER SERVICE VALENTINE NE
ISSUED BY SCOTTSBLUFF NE
608 PM MDT FRI JUL 10 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 700 PM MDT FOR PEOPLE IN THE FOLLOWING
COUNTIES OF

NORTH CENTRAL NEBRASKA...NORTHEAST CHERRY AND THE CITY OF VALENTINE

AT 6 PM MDT A SEVERE THUNDERSTORMS WERE JUST NORTH AND ALSO JUST
WEST OF VALENTINE NEBRASKA. THESE STORMS SHOULD MERGE TODGETHER
OVER VALENTINE BY 615 PM MDT AND THEN MOVE SOUTHEAST AT 25 MPH.

THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE
OR NO WARNING...SO BE ON THE LOOKOUT.
PEOPLE IN THE WARNED AREA SHOULD GET INTO A REINFORCED SHELTER AND
PREPARE FOR DAMAGING WINDS...LARGE HAIL...VERY HEAVY RAIN...AND
DANGEROUS LIGHTNING.

THIS SEVERE THUNDERSTORM CAN PRODUCE HAIL GREATER THAN 3/4 INCH IN
DIAMETER AND DESTRUCTIVE WINDS.  STAY INDOORS AND AWAY FROM AREAS
WHERE LOOSE ITEMS COULD BECOME DANGEROUS FLYING DEBRIS.

PERSONS DRIVING IN THE WARNED AREA SHOULD WATCH OUT FOR WATER OVER
ROADS...IN UNDERPASSES AND NEAR SMALL STREAMS.

IN ADDITION TO THE SEVERE WEATHER LIKELY WITH THESE STORMS...SMALL
STREAM FLOODING MAY OCCUR DUE TO THE HEAVY RAINFALLS WITH THE STORMS
AND THE SATURATED GROUND FROM THE THURSDAY NIGHT STORMS.

KARR

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 10, 4:28 PM MDT, 1 hour 40 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
425 PM MDT FRI JUL 10 1987

STRONG THUNDERSTORMS WERE DEVELOPING IN SOUTHWEST NEBRASKA THIS
AFTERNOON.

AT 420 PM MDT STRONG THUNDERSTORMS HAD JUST DEVELOPED IN SOUTH
CENTRAL KEITH COUNTY OF SOUTHWEST NEBRASKA.  THE STRONG THUNDERSTORMS
WERE 7 MILES SOUTHEAST OF OGALLALA NEBRASKA WHICH IS IN CENTRAL KEITH
COUNTY.

NO THUNDERSTORM MOVEMENT HAD YET BEEN DETERMINED DUE TO BEING NEWLY
DEVELOPED.  LISTEN FOR LATER STATEMENTS WHEN EXACT MOVEMENT HAS BEEN
DETERMINED.

PERSONS IN SOUTHWEST KEITH COUNTY CAN ALREADY LOOK FOR DANGEROUS
LIGHTNING...HEAVY RAINS AND BRIEF GUSTY WINDS AS THESE THUNDERSTORMS
CONTINUE TO DEVELOP DURING THE AFTERNOON HOURS.

MEYER
Special weather statement, Jul 10, 5:29 PM MDT, 39 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
625 PM CDT FRI JUL 10 1987

STRONG THUNDERSTORMS CONTINUED ACROSS SOUTHWEST NEBRASKA THIS
AFTERNOON.

AT 620 PM CDT A STRONG THUNDERSTORM WAS IN EXTREME NORTHWEST LINCOLN
COUNTY OF SOUTHWEST NEBRASKA.  THE STRONG THUNDERSTORM WAS 25 MILES
NORTHWEST OF NORTH PLATTE NEBRASKA MOVING NORTHEAST AT 20 MILES AN
HOUR.

OTHER WEAKER THUNDERSTORMS WERE SCATTERED BETWEEN OGALLALA AND PAXTON
IN KEITH COUNTY ALSO IN SOUTHWEST NEBRASKA.  THESE WEAKER
THUNDERSTORMS WERE ALSO MOVING NORTHEAST AT 20 MILES AN HOUR.

ANOTHER STRONG THUNDERSTORM HAD DEVELOPED IN NORTHWEST RED-WILLOW
COUNTY IN SOUTHWEST NEBRASKA.  THIS STRONG THUNDERSTORM WAS 7 MILES
NORTHWEST OF MCCOOK NEBRASKA ALSO MOVING NORTHEAST AT 20 MILES AN
HOUR.

PEOPLE IN PARTS OF SOUTHWEST NEBRASKA CAN EXPECT DANGEROUS
LIGHTNING...SMALL HAIL...LOCALLY HEAVY RAIN AND BRIEF GUSTY WINDS AS
THESE THUNDERSTORMS MOVE ACROSS THE REGION DURING THE AFTERNOON AND
EVENING HOURS.

MEYER

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 7:22 PM MDTSevere Thunderstorm WarningLBFKeya Paha68 min
Jul 10, 9:33 PM MDTSevere Thunderstorm WarningLBFGrant57 min
Jul 10, 10:13 PM MDTSevere Thunderstorm WarningLBFCherry57 min
Jul 10, 10:44 PM MDTSevere Thunderstorm WarningLBFHooker21 min
Jul 10, 10:44 PM MDTSevere Thunderstorm WarningLBFThomas46 min
Jul 11, 12:10 AM MDTTornado WarningLBFBrown, Rock35 min
Jul 11, 12:34 AM MDTSevere Thunderstorm WarningLBFHolt56 min
Jul 11, 1:14 AM MDTSevere Thunderstorm WarningLBFBoyd31 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1987Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.