Severe Thunderstorm Warning 37, NWS Sioux Falls, SD

Issued

May 12, 1986, 4:18 PM CDT (21:18 UTC)

Expired

May 12, 1986, 5:15 PM CDT

In force

57 min

Issued by

NWS Sioux Falls, SD

Area

Whole counties

Counties Osceola County, IA, Jackson County, MN

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

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.

000 
TTAA00 KFSD 122118
SVRFSD
MNC063-IAC143-122215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
418 PM CDT MON MAY 12 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 515 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

SOUTHWEST MINNESOTA...WESTERN JACKSON
NORTHWEST IOWA...EASTERN OSCEOLA

SOME OF THE CITIES INCLUDED IN SOUTHWEST MINNESOTA ARE HERON LAKE
AND LAKEFIELD AND NORTHWEST IOWA OCHEYEDAN.

AT 415 PM CDT  RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS
15 MILES NORTH OF WORTHINGTON MINNESOTA TO 15 MILES SOUTH
WORTHINGTON MOVING EAST AT 15 MPH.

 AT 414 PM CDT 3/4 TO 11/4 INCH HAIL WAS REPORTED AT WORTHINGTON
MINNESOTA.

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 yQUICKLY FLOOD A LOW LYING AREA.

THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR
NO ADVANCE WARNING SO BE ON THE LOOKOUT.

BEHREND

In the hours before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
145 PM CDT MON MAY 12 1986

BETWEEN 100 PM AND 145 PM CDT AN INTENSE THUNDERSTORM QUICKLY POPPED UP
JUST SOUTHEAST OF PIPESTONE IN SOUTHWESTERN MINNESOTA. THIS THUNDERSTORM
WAS LIKELY PRODUCING BRIEF HEAVY RAINS...SMALL HAIL..AND GUSTY WINDS
TO PERHAPS 40 MPH.

THIS INTENSE THUNDERSTORM WAS MOVING NORTHEAST AT 30 MPH AND BY 230
PM CDT WILL HAVE REACHED THE AREA BETWEEN SLAYTON AND TRACY MINNESOTA.

OTHER THUNDERSHOWERS WERE GATHERING STRENGTH FROM EAT OF BROOKINGS
SOUTH DAKOTA OVER TO THE LAKE BENTON AREA IN THE SOUTHWESTERN
MINNESOTA COUNTY OF LINCOLN.

QUICK DEVELOPING THUNDERSTORMS WILL BE POSSIBLE OVER SOUTHWESTERN
MINNESOTA FOR THE REMAINDER OF THIS AFTERNOON AND EVENING AS A COLD
FRONT MOVES SLOWLY THROUGH THAT AREA.
KAPELA

STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
353 PM CDT MON MAY 12 1986

345 PM CDT        GOLF BALL SIZE HAIL AT READING MN/ 8 MILES NORTHWEST
                  OF WORTHINGTON MN/

BEHREND

Severe Thunderstorm Warnings in Minnesota, 1986Severe Thunderstorm Warnings in Iowa, 1986Every severe thunderstorm warning in 1986

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.