Alert archive / South Dakota / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 128, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Aug 15, 1987, 7:48 PM CDT for Bon Homme County, Charles Mix County, South Dakota. It was in force for 57 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Aug 15, 1987, 7:48 PM CDT (00:48 UTC)
- Expired
- Aug 15, 1987, 8:45 PM CDT
- In force
- 57 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
Counties Bon Homme County, SD, Charles Mix County, SD
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 15, 8:10 PM CDT | Thunderstorm Wind 52 | Bon Homme, SD |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 0.8 hours before the alert went out and 250 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
- 3633 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 207 m²/s²
- 0-3 km storm-relative helicity
- 316 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 15, 4:53 PM CDT, 2 hours 55 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 450 PM CDT SAT AUG 15 1987 ...TORNADO WATCH FOR EASTERN SOUTH DAKOTA UNTIL 900 PM CDT SATURDAY... AT 430 PM CDT...NUMEROUS SEVERE THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUED OVER NORTHEASTERN SOUTH DAKOTA. THE SEVERE THUNDERSTORMS WERE LOCATED 20 MILES EITHER SIDE OF A LINE FROM REDFIELD...ABOUT 30 MILES NORTH OF HURON TO BRITTON...35 MILES NORTHEAST OF ABERDEEN. THESE STORMS HAVE PRODUCED TORNADOES...LARGE HAIL...VERY HEAVY RAIN AND DANGEROUS LIGHTNING. THE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 30 MILES AN HOUR AND CONTINUED TO DEVELOP TO THE SOUTH. ...OTHERWISE INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN WERE DEVELOPING IN SOUTH CENTRAL SOUTH DAKOTA. THE THUNDERSTORMS WERE LOCATED JUST WEST OF LAKE ANDES. THESE STORMS MAY PRODUCE VERY HEAVY RAIN...HAIL... STRONG GUSTY WIND...DANGEROUS LIGHTNING AND RAPID FLOODING OF LOW LYING AREAS. THESE THUNDERSTORMS ARE MOVING TO THE NORTHEAST AT 25 MILES AN HOUR. HUTCHEON
Special weather statement, Aug 15, 6:03 PM CDT, 1 hour 45 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 555 PM CDT SAT AUG 15 1987 ...SEVERE THUNDERSTORM WARNING FOR CLARK COUNTY UNTIL 645 PM CDT... ...TORNADO WATCH FOR EASTERN SOUTH DAKOTA UNTIL 900 PM CDT... AT 525 PM CDT...A LINE OF INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUED OVER NORTHEASTERN SOUTH DAKOTA. THE INTENSE THUNDERSTORMS WERE LOCATED 20 MILES EITHER SIDE OF A LINE FROM WOLSEY...ABOUT 10 MILES WEST OF HURON TO 50 MILES NORTHEAST OF ABERDEEN AT VEBLEN. THESE STORMS HAVE PRODUCED TORNADOES...LARGE HAIL...VERY HEAVY RAIN AND DANGEROUS LIGHTNING. THE THUNDERSTORMS WERE MOVING TO THE EAST AT 35 MILES AN HOUR. ...OTHERWISE NUMEROUS INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUED IN SOUTH CENTRAL SOUTH DAKOTA. THE THUNDERSTORMS WERE LOCATED SOUTH OF A LINE FROM CHAMBERLAIN TO FORESTBURG...ABOUT 20 MILES SOUTH OF HURON AND EAST OF THE JAMES RIVER. THESE STORMS MAY PRODUCE VERY HEAVY RAIN...HAIL...STRONG GUSTY WIND...DANGEROUS LIGHTNING AND RAPID FLOODING OF LOW LYING AREAS. THESE THUNDERSTORMS ARE MOVING TO THE EAST AT 30 MILES AN HOUR. HUTCHEON
Local storm report, Aug 15, 6:11 PM CDT, 1 hour 37 minutes before
STORM REPORT NATIONAL WEATHER SERVICE SIOUX FALLS SD 615 PM CDT SAT AUG 15 1987 STORM DATA FOR SATURDAY AUGUST 15 1987 TIME COUNTY..LOCATION CHARACTER OF STORM..DAMAGE ....................................................................... 607 PM CDT CHARLES MIX...WAGNER GOLF BALL SIE HAIL UMLAND
Local storm report, Aug 15, 6:28 PM CDT, 1 hour 20 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
625 PM CDT SAT AUG 15 1987
STORM DATA FOR SATURDAY AFTERNOON AND EVENING
TIME COUNTY..LOCATION CHARACTER OF STORM..DAMAGE
.......................................................................
400 PM CDT GREGORY...AT BURKE AND 3/4 INCH HAIL FELL
HERRICK
607 PM CDT CHARLES MIX...AROUND GOLF BALL TO HEN EGG SIZE
WAGNER HAIL FELL
KAPELASpecial weather statement, Aug 15, 6:48 PM CDT, 1 hour before
SEVERE WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 645 PM CDT SAT AUG 15 1987 ...SEVERE THUNDERSTORM WARNING FOR CODINGTON AND NORTHERN HAMLIN UNTIL 715 PM CDT... ...TORNADO WATCH FOR EASTERN SOUTH DAKOTA UNTIL 900 PM CDT... AT 625 PM CDT...A LINE OF INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUED OVER NORTHEASTERN SOUTH DAKOTA. THE INTENSE THUNDERSTORMS WERE LOCATED 20 MILES EITHER SIDE OF A LINE FROM BANCROFT...20 MILES EAST OF HURON TO ROSHOLT...60 MILES NORTH OF WATERTOWN. THESE STORMS HAVE PRODUCED TORNADOES...LARGE HAIL... VERY HEAVY RAIN AND DANGEROUS LIGHTNING. THE THUNDERSTORMS WERE MOVING TO THE EAST AT 35 MILES AN HOUR. ...OTHERWISE AN ISOLATED INTENSE THUNDERSTORM WITH VERY HEAVY RAIN WAS 10 MILES NORTH AVON...WHICH IS ABOUT 30 MILES WEST OF YANKTON. THESE STORMS HAVE PRODUCE VERY HEAVY RAIN...LARGE HAIL...STRONG WINDS AND DANGEROUS LIGHTNING. THESE THUNDERSTORMS ARE MOV:ING TO THE EAST AT 35 MILES AN HOUR. HUTCHEON
Local storm report, Aug 15, 7:18 PM CDT, 30 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
715 PM CDT SAT AUG 15 1987
STORM DATA FOR SATURDAY EVENING
TIME COUNTY..LOCATION CHARACTER OF STORM..DAMAGE
.......................................................................
607 TO 630 CHARLES MIX...AT WAGNER GOLF BALL TO BASEBALL SIZE
PM CDT HAIL...13/4 TO 3 INCH
GROUND COVERED WHITE
638 PM CDT BON HOMME...HIGHWAY 46 3/4 INCH HAIL...40 MPH WINDS
IN WESTERN PART OF CNTY AND HEAVY RAINS
708 PM CDT BON HOMME...IN AVON 3/4 INCH HAIL...30 MPH WINDS
j AND HEAVY RAINS
KAPELAThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 15, 8:12 PM CDT | Severe Thunderstorm Warning | FSD | Yankton | 63 min |
| Aug 15, 9:05 PM CDT | Severe Thunderstorm Warning | FSD | McCook, Minnehaha | 55 min |
| Aug 15, 9:22 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha, Moody | 68 min |
| Aug 16, 12:19 AM CDT | Severe Thunderstorm Warning | FSD | Sioux | 56 min |
| Aug 16, 12:59 AM CDT | Severe Thunderstorm Warning | FSD | Osceola | 61 min |
| Aug 15, 9:22 PM CDT | Severe Thunderstorm Warning | FSD | Pipestone | 68 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.