Alert archive / South Dakota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 98, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 14, 1986, 12:22 AM CDT for Brule County, South Dakota. It was in force for 38 min.
The area
The counties it named.
The facts
- Issued
- Jul 14, 1986, 12:22 AM CDT (05:22 UTC)
- Expired
- Jul 14, 1986, 1:00 AM CDT
- In force
- 38 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Brule 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
Aberdeen, SD (KHON), launched 00:00Z, 5.4 hours before the alert went out and 142 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
- 2450 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 156 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 140522 SVRFSD SDC015-023-140630- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 1222 AM CDT MON JUL 14 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 130 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTH CENTRAL SOUTH DAKOTA...BRULE AND NORTHERN CHARLES-MIX THIS WARNING INCLUDES THE ADJACENT WATERS OF THE MISSOURI RIVER. SOME OF THE CITIES INCLUDED IN SOUTH CENTRAL SOUTH DAKOTA ARE.. CHAMBERLAIN..KIMBALL..AND PLATTE. AT 1215AM CDT RADAR INDICATED A LINE OF THUNDERSTORMS FROM 60 MILES SOUTHWEST OF MITCHELL IN THE IONA AREA TO 65 MILES NORTH EAST OF MITCHELL..OR 5 MILES NORTHEAST OF CHAMBERLAIN SOUTH DAKOTA. THESE THUNDERSTORMS WERE MOVING EAST SOUTHEAST AT 20 MPH. IF YOU ARE IN THE PATH OF THIS STORM..YOU SHOULD GET TO A REINFORCED SHELTER. A SEVERE THUNDERSTORM PRODUCES DAMAGING 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. GOLDEN
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, Jul 13, 11:56 PM CDT, 26 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1155 PM CDT SAT JUL 12 1986 BETWEEN 1100 AND 1155 PM CDT INTENSE THUNDERSTORMS HAD DEVELOPED IN SOUTHCENTRAL SOUTH DAKOTA AROUND THE CHAMBERLAIN AREA...OR ABOUT 55 TO 60 MILES WEST OF MITCHELL. THESE INTENSE THUNDERSTORMS WILL MOVE EAST AT 30 MPH AND WILL PRODUCE HEAVY RAINS..AND POSSIBLY GUSTY WINDS TO 40 MPH AND SMALL HAIL. THEY WILL REACH THE KIMBALL AREA BY 1230 PM CDT. OTHER THUNDERSTORMS HAD ALSO POPPED UP OVER SOUTHEASTERN SOUTH DAKOTA BEFORE THE MIDNIGHT HOUR. THESE THUNDERSTORMS SHOWED A POP CORN PATTERN AND WERE LOCATED FROM SOUTH OF MITCHELL TO NORTH OF SIOUX CITY IOWA. THESE THUNDERSTORMS SHOULD ALSO MOVE EAST/SOUTHEAST AT 30 MPH. DANGEROUS LIGHTNING IS LIKELY WITH ANY OF THE THUNDERSTORMS. SHOWERS AND THUNDERSTORMS WILL CONTINUE TO POP UP THROUGH OUT THE NIGHTTIME HOURS ACROSS PARTS OF SOUTH DAKOTA. KAPELA
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 12:22 AM CDT | Severe Thunderstorm Warning | FSD | Charles Mix | 68 min |
| Jul 14, 12:55 AM CDT | Severe Thunderstorm Warning | FSD | Gregory | 35 min |
| Jul 14, 6:50 AM CDT | Severe Thunderstorm Warning | FSD | Minnehaha, Moody | 55 min |
| Jul 14, 6:50 AM CDT | Severe Thunderstorm Warning | FSD | Brookings | 55 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 1986Every severe thunderstorm warning in 1986
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.