Alert archive / Nebraska / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 36, NWS Sioux Falls, SD

July 7, 1987Dixon County, Nebraska

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 7, 1987, 12:19 AM CDT for Dixon County, Nebraska. It was in force for 56 min.

The area

The counties it named.

The facts

Issued: Jul 7, 1987, 12:19 AM CDT (05:19 UTC)
Expired: Jul 7, 1987, 1:15 AM CDT
In force: 56 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

County Dixon 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, 5.3 hours before the alert went out and 137 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3581 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 112 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 KSUX 070519
SVRSUX
NEC051-070615-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX CITY IA
1219 AM CDT TUE JUL 7 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL  12015 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN NORTHEAST NEBRASKA
          ...DIXON
 
AT 1217 AM CDT RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS JUST
MOVING INTO WESTERN EDGE OF DIXON COUNTY...ABOUT 32 MILES SOUTHWEST
OF SIOUX CITY.   THESE THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN
HOUR.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PRO=TECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
SHERLIN

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, 8:30 PM CDT, 3 hours 49 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
830 PM CDT MON JUL 7 1987

645 PM CDT   PEA SIZE HAIL AT WINNER SD IN TRIPP COUNTY.

710 PM CDT   TORNADO 2 MILES SOUTH OF CHAMBERLAIN SD IN BRULE COUNTY.
             WENT BACK UP IN CLOUD AT 715 PM CDT. NO DAMAGED REPORTED.

715 PM CDT   GOLFBALL SIZE HAIL 5 MILES SOUTH OF CHAMBERLAIN SD IN BRULE
             COUNTY.

739 PM CDT   2 LARGE FUNNEL CLOUDS 12 MILES NORTHWEST OF KIMBALL SD IN
             BRULE COUNTY.

750 PM CDT   FUNNEL CLOUD REPORTED BY PUBLIC 10 MILES NORTHEAST OF
             KIMBALL SD IN BRULE COUNTY.

751 PM CDT   PEA SIZE HAIL AND 40 TO 50 MPH WINDS 2 MILES WEST OF
             KIMBALL SD IN BRULE COUNTY.

809 PM CDT  PEA SIZE HAIL AND VERY HEAVY RAIN WITH 35 TO 45 MPH WINDS
            8 MILES EAST OF KIMBALL SD IN BRULE COUNTY.

BEHREND

Special weather statement, Jul 6, 9:01 PM CDT, 3 hours 18 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
900 PM CDT MON JUL 6 1987

SEVERE THUNDERSTORM WATCH NUMBER 330 IS NO LONGER IN EFFECT FOR
CAMPELL...WALWORTH...POTTER AND SULLY COUNTIES OF CENTRAL SOUTH
DAKOTA.

HOWEVER...THE WATCH CONTINUES IN EFFECT UNTIL 11 PM CDT FOR ALL
OF EASTERN SOUTH DAKOTA AND FOR EASTERN HUGHES...EASTERN LYMAN...
AND TRIPP COUNTIES OF SOUTHCENTRAL SOUTH DAKOTA.
JANSEN

Local storm report, Jul 6, 9:24 PM CDT, 2 hours 55 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
923 PM CDT MON JUL 6 1987

850 PM CDT   PEA SIZE HAIL AND HEAVY RAIN 3 TO 4 MILES NORTH OF WHITE
             LAKE SOUTH DAKOTA IN AURORA COUNTY.
J
918 PM CDT   SOME SMALL HAIL...50 MPH WINDS...AND HEAVY RAIN 12 MILES
             NORTHEAST OF PLANKINTON SOUTH DAKOTA IN AURORA COUNTY.

THEOPHILUS

Special weather statement, Jul 6, 9:55 PM CDT, 2 hours 24 minutes before

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
940 PM CDT MON JUL 6 1987

AT 935 PM CDT...NUMEROUS INTENSE THUNDERSTORMS CONTINUE OVER
PARTS OF EASTERN SOUTH DAKOTA.

MOST OF THE THUNDERSTORM ACTIVITY WAS EAST OF A ABERDEEN/HURON/MISSION
LINE.

THE MOST INETENSE THUNDERSTORM WAS LOCATED 15 MILES NORTHEAST OF MITCHELL.

MOVEMENT WAS EAST AT 25 MILES AN HOUR.

THESE STORMS CAN AND MAY PRODUCE HAIL...GUSTY WIND...FREQUENT LIGHTNING...
AND VERY HEAVY RAINS. IF THREATENING WEATHER APPROACHES YOU SHOULD SEEK
SAFE SHELTER.

MILLER

Special weather statement, Jul 6, 10:31 PM CDT, 1 hour 48 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1030 PM CDT MON JUL 6 1987

AT 1030 PM CDT INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN
CONTINUED ACROSS A LARGE PORTION OF SOUTHEAST SOUTH DAKOTA.

THE STORMS EXTENDED FROM 40 MILES SOUTHWEST OF SIOUX FALLS...NEAR
FREEMAN TO 35 MILES NORTH OF SIOUX FALLS...NEAR MADISON.
THE STRONGEST THUNDERSTORMS WERE LOCATED BETWEEN BRIDGEWATER
AND HOWARD.

THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING VERY HEAVY RAIN THAT
COULD FLOOD LOW LYING AREAS...HAIL...DANGEROUS LIGHTNING...AND
STRONG WINDS OF 40 TO 50 MILES AN HOUR AS THEY MOVE EAST AT 20 MILES
AN HOUR.

PERSONS IN THE SOUTH DAKOTA COUNTIES OF HUTCHINSON...MCCOOK...LAKE
...MINNEHAHA INCLUDING THE COMMUNITIES OF FREEMAN...BRIDGEWATER...
SALEM AND SIOUX FALLS SHOULD BE ON THE LOOKOUT FOR THESE STORMS
UNTIL MIDNIGHT.

STAY TUNED TO YOUR LOCAL RAIO AND TV STATION FOR FURTHER STATEMENTS
OR POSSIBLE WARNINGS.
BUSS

Special weather statement, Jul 6, 11:42 PM CDT, 37 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1140 PM CDT MON JUL 6 1987

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 4 AM CDT FOR EXTREME
SOUTHEAST SOUTH DAKOTA...SOUTHWEST MINNESOTA AND NORTHWEST IOWA...

AT 1135 PM CDT RADAR INDICATED A LINE OF INTENSE THUNDERSTORMS
FROM NEAR PIPESTONE MINNESOTA SOUTHWEST THROUGH SIOUX FALLS
TO YANKTON SOUTH DAKOTA AND INTO NORTHEAST NEBRASKA.

THE HEAVIEST THUNDERSTORMS WERE LOCATED 15 MILES NORTHEAST OF
SIOUX FALLS NEAR GARRETSON...10 MILES SOUTHWEST OF SIOUX FALLS
NEAR LENNOX...15 MILES NORTHEAST OF YANKTON AND JUST SOUTH OF
FREEMAN SOUTH DAKOTA.

THSE THUNDERSTORMS ARE CAPABLE OF PRODUCING STRONG GUSTY WINDS...
SMALL HAIL...HEAVY RAINS AND DANGEROUS CLOUD TO GROUNG LIGHTNING.
THIS LINE OF STORMS WAS MOVING EAST AT 20 MPH AND WILL BE AFFECTING
CLAY AND LINCOLN COUNTIES OF SOUTH DAKOTA...ROCK COUNTY OF SOUTHWEST
MINNESOTA AND LYON COUNTY OF NORTHWEST IOWA BY 1P230 AM CDT.

PERSON ACROSS SOUTHEAST SOUTH DAKOTA...NORTHWEST IOWA AND SOUTHWEST
MINNESOTA SHOULD KEEP ABREAST OF THIS WEATHER SITUATION AND BE
PREPARED TO SEEK SHELTER IF A WARNING IS ISSUED.
JANSEN

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 7, 12:30 AM CDT	Severe Thunderstorm Warning	FSD	Dixon	50 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.