Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 111, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 18, 1986, 5:55 PM CDT for Lincoln County, Lyon County, Minnesota. It was in force for 65 min.
The area
The counties it named.
The facts
- Issued
- Jul 18, 1986, 5:55 PM CDT (22:55 UTC)
- Expired
- Jul 18, 1986, 7:00 PM CDT
- In force
- 65 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
Counties Lincoln County, MN, Lyon County, MN
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 12:00Z, 10.9 hours before the alert went out and 193 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
- 2637 J/kg
- Mixed-layer CIN
- -152 J/kg
- Mixed-layer LCL
- 959 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 62 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFSD 182255 SVRFSD MNC081-083-190000- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 555 PM CDT FRI JUL 18 1986 THE NATIONAL WEATHER SERVICE HAS ISSU
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 18, 1:40 PM CDT, 4 hours 15 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 140 PM CDT FRI JUL 18 1986 AT 128 PM CDT...INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUED OVER PARTS OF EASTERN SOUTH DAKOTA..AND SOUTHWEST MINNEOSTA. THESE THUNDERSTORMS WERE LOCATED FROM NEAR HAYTI..20 MILES SOUTH OF WATERTOWN AND EASTWARD INTO SOUTHWEST MINNESOTA NEAR WILLMAR. ALSO..INTENSE THUNDERSTORMS WERE LOCATED SOUTH OF A LOWER BRULE /HURON LINE. VERY HEAVY RAINS ARE POSSIBLE WITH THESE STORMS. CONDITIONS ARE SUCH THAT THUNDERSTORMS SHOULD CONTINUE THROUGHOUT THE DAY IN SOUTH DAKOTA. SMALL STREAM..LOWLAND..AND URBAN FLOODING ARE POSSIBLE WITH THESE STORMS. PERSONS IN THESE AREAS SHOULD BE AWARE OF RAPIDLY CHANGING WEATHER CONDITIONS AND BE PREPARED TO TAKE PROTECTIVE ACTION. SMALL HAIL..STRONG GUSTY WINDS..AND FREQUENT LIGHTNING STRIKES ARE ALSO POSSIBLE WITH THESE STORMS. OTHERWISE..THUNDERSTORMS WERE OCCURRING IN CENTRAL SOUT?H DAKOTA. ALL MOVEMENT WAS NORTHEAST AT 30 MILES AN HOUR. KRAUSE/MILLER
Special weather statement, Jul 18, 2:07 PM CDT, 3 hours 48 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 205 PM CDT FRI JUL 18 1986 ...CANCEL SEVERE THUNDERSTORM WARNING FOR AURORA COUNTY... ...SEVERE THUNDERSTORM WATCH NUMBER 388 IN EFFECT UNTIL 900 PM CDT FOR PARTS OF EASTERN SOUTH DAKOTA... THE SEVERE THUNDERSTORM WHICH MOVED INTO NORTHERN AURORA COUNTY AT 130 PM CDT WEAKENED CONSIDERABLY BY 200 PM OVER NORTHERN AURORA COUNTY. THIS STORM THEN MOVED NORTHEAST INTO JERAULD COeUNTY. THEREFORE THE SEVERE THUNDERSTORM WARNING FOR AURORA COUNTY HAS BEEN CANCELED. THUNDERSTORMS WILL CONTINUE TO BE A THREAT FOR THE COUNTIES OF BRULE AND AURORA FOR THE REMAINDER OF THIS AFTERNOON AND TONIGHT. KAPELA
Local storm report, Jul 18, 2:34 PM CDT, 3 hours 21 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
231 PM CDT FRI JUL 18 1986
TIME EVENT LOCATION
120 PM CDT FUNNEL CLOUD TWELVE MILES SOUTHEAS{T OF GANN
VALLEY..IN NORTHEAST BRULE
COUNTY. REPORTED BY WEATHER
SPOTTER.
WEILANDSpecial weather statement, Jul 18, 2:43 PM CDT, 3 hours 12 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 240 PM CDT FRI JUL 18 1986 ...SEVERE THUNDERSTORM WATCH FOR PORTIONS OF EASTERN SOUTH DAKOTA UNTIL 9 PM CDT... AT 230 PM CDT...INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUED OVER PARTS OF EASTERN SOUTH DAKOTA..AND WEST CENTRAL MINNESOTA. IN SOUTH DAKOTA..THE STRONGEST STORM WAS JUST SOUTHWEST OF WESSINGTON SPRINGS..OR 35 MILES SOUTHWEST OF HURON. IN MINNESOTA..THE STRONGEST STORM WAS 10 MILES NORTHWEST OF MONTEVIDEO. VERY HEAVY RAINS ARE POSSIBLE WITH THESE STORMS. CONDITIONS ARE SUCH THAT THUNDERSTORMS SHOULD CONTINUE THROUGHOUT THE DAY IN SOUTH DAKOTA. SMALL STREAM..LOWLAND..AND URBAN FLOODING ARE POSSIBLE WITH THESE STORMS. PERSONS IN THESE AREAS SHOULD BE AWARE OF RAPIDLY CHANGING WEATHER CONDITIONS AND BE PREPARED TO TAKE PROTECTIVE ACTION. SMALL HAIL..STRONG GUSTY WINDS..AND FREQUENT LIGHTNING STRIKES ARE ALSO POSSIBLE WITH THESE STORMS. OTHERWISE..THUNDERSTORMS WERE OCCURRING IN CENTRAL SOUTH DAKOTA. THESE WERE IN A 50 MILE WIDE AREA FROM 30 MILES WEST OF ABERDEEN TO 15 MILES NORTH OF WINNER. ALL MOVEMENT WAS NORTHEAST AT 30 MILES AN HOUR. KRAUSE/MILLER
Special weather statement, Jul 18, 4:38 PM CDT, 1 hour 17 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 440 PM CDT FRI JUL 18 1986 THUNDERSTORMS WITH VERY HEAVY RAIN AND POSSIBLE HAIL WERE MOVING INTO THE WEST PART OF GREGORY COUNTY IN SOUTHCENTRAL SOUTH DAKOTA. A STRONGER STORM WAS JUST SOUTHWEST OF BUTTE NEBRASKA OR NORTHERN HOLT COUNTY NEBRASKA. THESE STORMS WERE MOVING EAST NORTHEAST AT ABOUT 25 MPH AND WILL BE MOVING THROUGH MOST OF GREGORY AND THE SOUTH PART OF CHARLES MIX COUNTIES BWTWEEN 440 PM AND 540 PM CDT. SOME TOWNS EFFECTED MAY BE GREGORY..BONESTEEL AND PICKSTOWN. KOSCIELSKI
Special weather statement, Jul 18, 4:44 PM CDT, 1 hour 11 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HURON SD 442 PM CDT FRI JUL 18 1986 ...CANCEL THE SEVERE THUNDERSTORM WARNING FOR HAMLIN AND SOUTHERN CODINGTON COUNTIES. THIS WARNING HAD BE EN IN EFFECT UNTIL 5 PM CDT... KRAUSE/STOREY
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 4:54 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 66 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 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.