Alert archive / Nebraska / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 102, NWS North Platte, NE

August 6, 1986Brown County, Keya Paha County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 6, 1986, 6:35 PM CDT for Brown County, Keya Paha County, Nebraska. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
Aug 6, 1986, 6:35 PM CDT (23:35 UTC)
Expired
Aug 6, 1986, 7:35 PM CDT
In force
60 min
Issued by
NWS North Platte, NE
Area
Whole counties

Counties Brown County, NE, Keya Paha 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 12:00Z, 11.6 hours before the alert went out and 181 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 12:00Z on 1986-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 988 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 12:00Z on 1986-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 128 square meters per square second.19395878Sfc1 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
988 J/kg
Mixed-layer CIN
-199 J/kg
Mixed-layer LCL
1401 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
128 m²/s²
0-3 km storm-relative helicity
207 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Aug 6, 4:45 PM CDT, 1 hour 50 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
445 PM CDT WED AUG 6 1986

SHOWERS AND THUNDERSTORMS..SOME VERY HEAVY..CONTINUED OVER SOUTHWEST
AND WESTCENTRAL NEBRASKA.  THE STRONGEST STORM WAS 40 MILES SOUTH OF
NORTH PLATTE AND WAS MOVING VERY SLOWLY EASTWARD.  THIS STORM COULD
PRODUCE STRONG WINDS..HEAVY RAIN AND HAIL AS IT MOVES SLOWLY EASTWARD
BETWEEN 5 AND 7PM CDT.

CARPER
Special weather statement, Aug 6, 4:47 PM CDT, 1 hour 48 minutes before
SPECIAL WEATHER STATEMENT..CORRECTION..
NATIONAL WEATHER SERVICE NORTH PLATTE NE
445 PM CDT WED AUG 6 1986

...TORNADO WATCH FOR A LARGE PART OF CENTRAL NEBRASKA UNTIL 10 PM CDT...

SHOWERS AND THUNDERSTORMS..SOME VERY HEAVY..CONTINUED OVER SOUTHWEST
AND WESTCENTRAL NEBRASKA.  THE STRONGEST STORM WAS 40 MILES SOUTH OF
NORTH PLATTE AND WAS MOVING VERY SLOWLY EASTWARD.  THIS STORM COULD
PRODUCE STRONG WINDS..HEAVY RAIN AND HAIL AS IT MOVES SLOWLY EASTWARD
BETWEEN 5 AND 7PM CDT.

CARPER
Special weather statement, Aug 6, 6:21 PM CDT, 14 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
615 PM CDT WED AUG 6 1986

...TORNADO WATCH FOR A LARGE PART OF CENTRAL NEBRASKA UNTIL 10 PM CDT...

AT 615 PM CDT INTENSE THUNDERSTORMS WERE LOCATED IN RED-WILLOW COUNTY
OF SOUTHWEST NEBRASKA.  ONE OF THE STRONGEST CELLS WAS 7 MILES NORTH
OF MCCOOK NEBRASKA AND A SECOND STRONG CELL 25 MILES SOUTHEAST OF
MCCOOK.  ALL THUNDERSTORMS WERE MOVING SOUTHEAST AT 10 MILES AN HOUR.

AS OF 615 PM CDT NO SEVERE WEATHER WAS OCCURRING IN THE NORTH PLATTE
LISTENING AREA..HOWEVER THESE THUNDERSTORMS CAN PRODUCE HAIL..HEAVY
RAIN..GUSTY WINDS AND DANGEROUS LIGHTNING.  PERSONS IN THE VICINITY
OF THESE THUNDERSTORMS ARE ADVISED TO KEEP AN EYE ON THE WEATHER.

MEYER

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 6:55 PM CDTTornado WarningLBFCherry50 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1986Every severe thunderstorm warning in 1986

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.