Alert archive / Nebraska / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 37, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 7, 1987, 12:30 AM CDT for Dixon County, Nebraska. It was in force for 50 min.
The area
The counties it named.
The facts
- Issued
- Jul 7, 1987, 12:30 AM CDT (05:30 UTC)
- Expired
- Jul 7, 1987, 1:20 AM CDT
- In force
- 50 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, 5.5 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.
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSUX 070530
SVRSUX
NEC051-070630-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX CITY IA
1230 AM CDT TUE JUL 7 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 120 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 THE 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 PREOTECTION 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.
SHERLINWhat 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, 9:24 PM CDT, 3 hours 6 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.
THEOPHILUSSpecial weather statement, Jul 6, 9:55 PM CDT, 2 hours 35 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 59 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, 48 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
Local storm report, Jul 7, 12:22 AM CDT, 8 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1220 PM CDT TUE JUL 7 1987
949 PM CDT PEA SIZE HAIL AND HEAVY RAIN NEAR MITCHELL SOUTH DAKOTA.
(DAVISON COUNTY)
1007 PM CDT GUST TO 41 MPH AT THE SIOUX FALLS AIRPORT.
(MINNEHAHA COUNTY)
1155 PM CDT 52 MPH WINDS AT VERMILLION SOUTH DAKOTA.
(CLAY COUNTY)
1217 AM CDT PEA TO MARBLE SIZE HAIL COVERING GROUND AT BERESFORD
SOUTH DAKOTA. (pLINCOLN COUNTY)
JANSENLocal storm report, Jul 7, 12:23 AM CDT, 7 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1220 AM CDT TUE JUL 7 1987
949 PM CDT PEA SIZE HAIL AND HEAVY RAIN NEAR MITCHELL SOUTH DAKOTA.
(DAVISON COUNTY)
1007 PM CDT GUST TO 41 MPH AT THE SIOUX FALLS AIRPORT.
(MINNEHAHA COUNTY)
1155 PM CDT 52 MPH WINDS AT VERMILLION SOUTH DAKOTA.
(CLAY COUNTY)
1217 AM CDT PEA TO MARBLE SIZE HAIL COVERING GROUND AT BERESFORD
SOUTH DAKOTA. (qLINCOLN COUNTY)
JANSENThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 12:19 AM CDT | Severe Thunderstorm Warning | FSD | Dixon | 56 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.