Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 100, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 15, 1986, 9:17 AM CDT for Redwood County, Renville County, Minnesota. It was in force for 43 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
- Jul 15, 1986, 9:17 AM CDT (14:17 UTC)
- Expired
- Jul 15, 1986, 10:00 AM CDT
- In force
- 43 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Redwood County, MN, Renville County, MN
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 |
|---|---|---|---|
| Jul 15, 10:00 AM CDT | Thunderstorm Wind 0 | Renville, MN |
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
Minneapolis, MN (KSTC), launched 12:00Z, 2.3 hours before the alert went out and 123 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 KMSP 151417 SVRMSP MNC129-127-151500- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MINNEAPOLIS MN 917 AM CDT TUE JUL 15 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTHWEST MINNESOTA...RENVILLE AND REDWOOD AT 910 AM CDT RADAR INDICATED A SEVERE THUNDERSTORM LOCATED BETWEEEN GRANITE FALLS AND MARSHALL IN SOUTHWEST MINNESOTA..ABOUT 100 MILES WEST OF THE TWIN CITIES..MOVING TO THE EAST SOUTHEAST AT 35 MPH. CITIES IN THE WARNING AREA ARE OLIVIA..REDWOOD FALLS.. AND WABASSO. REMEMBER SEVERE THUNDERSTORMS PRODUCE STRONG DAMAGING WINDS..LARGE HAIL AmND FREQUENT LIGHTNING STRIKES. ALSO SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING..SO BE ON THE LOOKOUT AND BE PREPARED TO MOVE TO A PLACE OF SAFETY IF ONE IS SPOTTED. WILLIS
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, 2 hours 15 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, 1 hour 22 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
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, 10:35 AM CDT | Severe Thunderstorm Warning | MPX | McLeod, Sibley | 55 min |
| Jul 15, 10:46 AM CDT | Severe Thunderstorm Warning | MPX | Le Sueur, Nicollet | 49 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.