Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 102, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 15, 1986, 10:46 AM CDT for Le Sueur County, Nicollet County, Minnesota. It was in force for 49 min.
The area
The counties it named.
The facts
- Issued
- Jul 15, 1986, 10:46 AM CDT (15:46 UTC)
- Expired
- Jul 15, 1986, 11:35 AM CDT
- In force
- 49 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Le Sueur County, MN, Nicollet 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
Minneapolis, MN (KSTC), launched 12:00Z, 3.8 hours before the alert went out and 63 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
- NaN m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 112 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KRST 151546 SVRRST MNC103-079-151635- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ROCHESTER MN 1046 AM CDT TUE JUL 15 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1135 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTH CENTRAL MINNESOTA...NORTHEAST NICOLLET AND SOUTHERN LESUEUR AT 1030 CDT RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES NORTHWEST OF ST. PETER MINNESOTA IN NICOLLET COUNTY AND MOVING TOWARD THE SOUTHEAST AT 35 MPH. SOME OF THE CITIES INCLUDED IN THIS WARNING ARE ST. PETER AND WATERVILLE. A SEVERE THUNDERSTORM PRODUCES STRONG DAMAGING WINDS..LARGE HAIL ..VERY HEAVY RAIN AND DANGEROUS LIGHTNING. FLAGSTAD
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 15, 7:02 AM CDT, 3 hours 44 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 645 AM CDT TUE JUL 15 1986 AT 6 30 AM...THUNDERSTORMS...SOME WITH HEAVY TO LOCALLY VERY HEAVY RAINS WERE INCREASING FROM NORTHEAST SOUTH DAKOTA ACROSS WEST CENTRAL INTO CENTRAL AND SOUTHWEST MINNESOTA. HEAVIEST RAINS WERE OCCURRING FROM THE SOUTH DAKOTA BORDER NEAR ORTONVILLE THRU THE ALEXANDRIA AREA TO NEAR BRAINERD AND LITTLE FALLS IN CENTRAL MINNESOTA. THESE THUNDERSTORMS WERE PART OF A BROAD AREA OF SHOWERS AND THUNDER- STORMS THAT EXTENDED UP TO 75 MILES WIDE...WITH THE LEADING EDGE OF THE RAIN AREA FROM THE SOUTH DAKOTA BORDER NEAR CANBY TO NEAR ST CLOUD. MOVEMENT WAS TO THE EAST ABOUT 25 MILES AN HOUR. MOTORISTS SHOULD TRAVEL WITH CAUTION IN THESE AREAS...THE HEAVY RAINS COULD QUICKLY REDUCE VISIBILITY TO NEAR ZERO AND CAUSE PONDING OF WATER IN LOW SPOTS. DOM
Special weather statement, Jul 15, 7:55 AM CDT, 2 hours 51 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 745 AM CDT TUE JUL 15 1986 AT 7 30 AM...THUNDERSTORMS...SOME WITH HEAVY TO LOCALLY VERY HEAVY RAINS CONTINUED FROM NEAR WATERTOWN IN NORTHEAST SOUTH DAKOTA ACROSS CENTRAL MINNESOTA. HEAVIEST RAINS WERE OCCURRING FROM THE SOUTH DAKOTA BORDER SOUTH DAKOTA BORDER SOUTH OF ORTONVILLE THRU THE ALEXANDRIA AREA TO NEAR BRAINERD AND MILLE LACS LAKE IN CENTRAL MINNESOTA. THESE THUNDERSTORMS WERE PART OF A BROAD AREA OF SHOWERS AND THUNDER- STORMS THAT EXTENDED UP TO 75 MILES WIDE...WITH THE LEADING EDGE OF THE RAIN AREA FROM THE SOUTH DAKOTA BORDER NEAR CANBY THRU ST CLOUD INTO NORTHWEST WISCONSIN...NEAR ASHLAND. MOVEMENT WAS TO THE EAST ABOUT 25 MILES AN HOUR. MOTORISTS SHOULD TRAVEL WITH CAUTION IN THESE AREAS...THE HEAVY RAINS COULD QUICKLY REDUCE VISIBILITY TO NEAR ZERO AND CAUSE PONDING OF WATER IN LOW SPOTS. DOM
Special weather statement, Jul 15, 9:30 AM CDT, 1 hour 16 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST CLOUD MN 930 AM CDT TUE JUL 15 1986. ...SEVERE THUNDERSTORM WATCH FOR SOUTHERN MINNESOTA UNTIL 3PM CDT... ...SEVERE THUNDERSTORM WARNING FOR LAC PARLE AND YELLOW MEDICINE COUNTIES EXPIRED AT 9 30AM CDT... THE SEVERE THUNDERSTORMS THAT WERE IN LAC PARLE AND YELLOW MEDICINE COUNTIES OF CENTRAL MINNESOTA HAVE MOVED INTO RENVILLE AND REDWOOD COUNTIES WHERE WARNINGS HAVE BEEN ISSUED UNTIL 10AM CDT. AT 9 30 AM CDT A LINE OF STRONG THUNDERSTORMS EXTENDED FROM NEAR WILLMAR IN KANDIYOHI COUNTY NORTH THROUGH WESTERN STEARNS COUNTY..30 MILES WEST OF ST. CLOUD..TO MORRISON COUNTY NEAR MILLE LACS LAKE. ALL THE THUNDERSTORMS WERE MOVING EAST AT 25 MPH. DEVOE/NISTLER
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 8:33 AM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle, Yellow Medicine | 57 min |
| Jul 15, 9:17 AM CDT | Severe Thunderstorm Warning | MPX | Redwood, Renville | 43 min |
| Jul 15, 10:35 AM CDT | Severe Thunderstorm Warning | MPX | McLeod, Sibley | 55 min |
| Jul 15, 11:47 AM CDT | Severe Thunderstorm Warning | MPX | Faribault, Martin | 53 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.