Alert archive / Nebraska / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 71, NWS North Platte, NE

August 6, 1987Madison County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 6, 1987, 1:32 AM CDT for Madison County, Nebraska. It was in force for 38 min.

The area

The counties it named.

The facts

Issued
Aug 6, 1987, 1:32 AM CDT (06:32 UTC)
Expired
Aug 6, 1987, 2:10 AM CDT
In force
38 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Madison 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

Omaha, NE (KOAX), launched 00:00Z, 6.5 hours before the alert went out and 122 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, Omaha, NE at 00:00Z on 1987-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Omaha, NE at 00:00Z on 1987-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3594 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
180 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOFK 060632
SVROFK
NEC119-167-179-039-060730-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORFOLK NE
132 AM CDT THU AUG 6 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 230 AM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

NORTHEAST NEBRASKA...MADISON...STANTON...WAYNE AND CUMING

AT 115 AM CDT A LINE OF SEVERE THUNDERSTORMS EXTENDED FROM NORFOLK
TO WAYNE IN NORTHEAST NEBRASKA.  THE STORMS WERE MOVING SOUTHEAST AT
 35 MPH.

AT 113 AM CDT A WIND GUSTS TO 61 MPH WAS REPORTED AT THE NORFOLK
WEATHER OFFICE.

REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE DEADLY WINDS IN EXCESS
OF 75 MPH...LARGE HAIL...KILLER LIGHTNING...AND TORRENTIAL RAINS
THAT CAN QUICKLY FLOOD A LOW LYING AREA.

 A SEVERE THUNDERSTORM WATCH REMAINS INEFFECT UNTIL 3AM CDT FOR PART

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, 12:01 AM CDT, 1 hour 31 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1155 PM CDT WED AUG 5 1987

...A SEVERE THUNDERSTORM WATCH UNTIL 3 AM THU CDT FOR LOGAN..THOMAS..
AND CUSTER IN NORTHCENTRAL NEBRASKA.

A LINE OF STRONG THUNDERSTORMS WERE MOVING INOT CENTRAL NEBRASKA AT 1145
PM CDT. A 20 MILE WIDE BAND OF THUNDERSTORMS WERE MOVING ACROSS HIGHWAY
83 BETWEEN THEDFORD AND THE HILLS NORTH OF STAPLETON NEBRASKA.

THE THUNDERSTORMS WERE MOVING SOUTHEAST AT 25 MPH.

PERSONS IN THESE WATCH AREA SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS

SMALLFIELD
Special weather statement, Aug 6, 12:38 AM CDT, 54 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1235 AM CDT THU AUG 6 1987

...A SEVERE THUNDERSTORM WATCH UNTIL 3 AM THU CDT FOR LOGAN..THOMAS..
AND CUSTER IN NORTHCENTRAL NEBRASKA.

A NARROW LINE OF THUNDERSTORMS CONTINEUS TO PUSH SOUTHEAST INTO CENTRAL
NEBRASKA. AT 1230 AM CDT A 20 MILE WIDE BAND OF THUNDERSTORMS EXTENDED
FROM NORTH OF STAPLETON..ON HIGHWAY 83..NORTH OF ANSELMO TO NEAR TAYLOR..
ON THE NORTH LOUP RIVER.

THE THUNDERSTORMS WERE MOVING SOUTHEAST AT 20 MPH.

PERSONS IN THESE WATCH AREA SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

SMALLFIELD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 10:44 PM CDTSevere Thunderstorm WarningLBFHolt56 min
Aug 5, 10:44 PM CDTSevere Thunderstorm WarningLBFBoyd26 min
Aug 6, 1:32 AM CDTSevere Thunderstorm WarningLBFCuming, Stanton, Wayne38 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; the sounding from the Mesonet's radiosonde archive.