Alert archive / South Dakota / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 14, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 16, 1987, 7:29 PM CDT for Todd County, Tripp County, South Dakota. It was in force for 61 min.
The area
The counties it named.
The facts
- Issued
- Jun 16, 1987, 7:29 PM CDT (00:29 UTC)
- Expired
- Jun 16, 1987, 8:30 PM CDT
- In force
- 61 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
Counties Todd County, SD, Tripp County, SD
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
Rapid City, SD (KRAP), launched 00:00Z, 0.5 hours before the alert went out and 226 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
- 13 J/kg
- Mixed-layer CIN
- -233 J/kg
- Mixed-layer LCL
- 3178 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 30 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 KFSD 170029
SVRFSD
SDC121-123-170130-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
729 PM CDT TUE JUN 16 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 830 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTH CENTRAL SOUTH DAKOTA
...EASTERN TODD...WESTERN TRIPP
AT 725 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM SOUTH OF MISSION
SOUTH DAKOTA ON THE SOUTH DAKOTA..NEBRASKA BORDER...45 MILES SOUTHWEST
WINNER SOUTH DAKOTA. THE THUNDERSTORM WAS MOVING TO THE NORTHEAST
AT 20 MPH. AT 702 PM CDT GOLFBALL SIZE HAIL WAS REPORTED AT VALETINE
NEBRASKA.
IF YOU ARE IN THE PATH OF THIS STORM...YOU SHOULD GET TO A
REINFORCED SHELTER. A SEVERE THUNDERSTORM PRODUCES WINDS IN EXCESS
OF 60 MPH...HAIL 3/4 INCH OR LARGER...DEADLY LIGHTNING...AND HEAVY
RAIN THAT CAN QUICKLY FLOOD A LOW LYING AREA.
BEHRENDWhat 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, Jun 16, 2:36 PM CDT, 4 hours 53 minutes before
^DSMSPSSUX SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 230 PM CDT TUE JUN 16 1987 AT 230 PM CDT INTENSE THUNDERSTORMS WERE LOCATED 30 TO 45 MILES SOUTHWEST TO SOUTHEAST OF SIOUX CITY. THESE STORMS ARE MOVING NORTHEAST AT 15 MPH. THEY WILL BE MOVING THROUGH THE SOUTHERN HALF OF MONONA COUNTY AND THE EXTREME SOUTHERN PART OF THURSTON COUNTY BETWEEN 3 AND 4 PM CDT. THESE THUNDERSTORMS MAY CONTAIN SMALL HAIL HEAVY RAIN AND STRONG WINDS. FREDERICK
Special weather statement, Jun 16, 3:29 PM CDT, 4 hours before
^DSMSPSSUX SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 330 PM CDT TUE JUN 16 1987 AT 325 PM CDT INTENSE THUNDERSTORMS WERE LOCATED 15 TO 50 MILES SOUTH TO SOUTHEAST OF SIOUX CITY. THESE STORMS ARE MOVING NORTHEAST AT 15 MPH. THEY WILL BE MOVING THROUGH THE EASTERN PORTIONS OF THURSTON COUNTY...MONOMA COUNTY AND INTO SOUTHERN WOODBURY COUNTY BETWEEN 330 AND 430 PM. THESE THUNDERSTORMS MAY CONTAIN SMALL HAIL HEAVY RAINO AND WINDS OF 40 TO 50 MPH. FREDERICK
Special weather statement, Jun 16, 6:40 PM CDT, 49 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 640 PM CDT TUE JUN 16 1987 ...A TORNADO WATCH IS IN EFFECT UNTIL 9 PM MDT FOR THE WESTERN THIRD OF SOUTH DAKOTA... AT 630 PM CDT...THERE WERE WIDELY SCATTERED THUNDERSTORMS IN SOUTH CENTRAL SOUTH DAKOTA. THE THUNDERSTORMS WERE 60 MILES SOUTHWEST OF HURON NEAR LOWER BRULE AND 25 MILES WEST OF WINNER. THESE THUNDERSTORMS WERE PRODUCING VERY HEAVY RAIN WITH S]OME PEA TO MARBLE SIZE HAIL WITH WIND GUSTS TO AROUND 40 MPH. SCATTERED THUNDERSTORMS WERE ALSO OCCURRING IN WESTERN SOUTH DAKOTA... 45 MILES NORTH OF RAPID CITY. MOVEMENT WAS NORTHEAST AT 15 MILES AN HOUR. PRESTON
Special weather statement, Jun 16, 7:00 PM CDT, 29 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 655 PM CDT TUE JUN 16 1987 ...INTENSE THUNDERSTORMS IN SOUTH CENTRAL SOUTH DAKOTA... AT 650 PM CDT RADAR INDICATED INTENSE THUNDERSTORMS IN SOUTH CENTRAL SOUTH DAKOTA NEAR MISSION SOUTH DAKOTA. THESE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 15 MPH. PEOPLE IN THE SOUTH CENTRAL SOUTH DAKOTA COUNTIES OF TODD...MELLETTE AND TRIPP SHOULD BE ALERT UNTIL 830 PM CDT ...ESPECIALLY IN THE CITIES OF MISSION ...WOOD AND WINNER. VERY HEAVY RAIN...HAIL AND WINDS OF 40 TO 50 MPH ARE POSSIBLE. INTENSE THUNDERSTORMS WERE ALSO OVER NORTH CENTRAL NEBRASKA IN CHERRY COUNTY SOUTHWEST OF VALENTINE. THESE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 20 MPH AND ALSO WILL BE EFFECTING SOUTH CENTRAL SOUTH DAKOTA THIS EVENING. A TORNOADO WATCH IS EFFECT FOR THE WESTERN THIRD OF SOUTH DAKOTA UNTIL 9 PM MDT. BEHREND
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 16, 7:51 PM CDT | Severe Thunderstorm Warning | FSD | Mellette | 54 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 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.