Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 121, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 19, 1986, 5:43 AM CDT for Fillmore County, Houston County, Winona County, Minnesota. It was in force for 47 min.
The area
The counties it named.
The facts
- Issued
- Jul 19, 1986, 5:43 AM CDT (10:43 UTC)
- Expired
- Jul 19, 1986, 6:30 AM CDT
- In force
- 47 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Fillmore County, MN, Houston County, MN, Winona 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 00:00Z, 10.7 hours before the alert went out and 187 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
- 235 J/kg
- Mixed-layer CIN
- -264 J/kg
- Mixed-layer LCL
- 1882 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KRST 191043 SVRRST MNC045-169-055-191130- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ROCHESTER MN 543 AM CDT SAT JUL 19 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 630 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTHEAST MINNESOTA...EASTERN FILLMORE...SOUTHERN WINONA AND HOUSTON THIS WARNING INCLUDES THE CITIES OF RUSHFORD MINNESOTA AND HOUSTON MINNESOTA AT 525 AM CDT THIS SATURDAY JUL 19TH MORNING RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES WEST OF RUSHFORD MINNESOTA MOVING TOWARDS THE EAST AR 40 MPH. A SEVERE THUNDERSTORM PRODUCES STRONG DAMAGING WINDS..LARGE HAIL ..VERY HEAVY qRAIN AND DANGEROUS LIGHTNING. REMEMBER THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NOW ADVANCE WARNING SO BE ON THE LOOKOUT. BARNES
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, 11:56 PM CDT, 5 hours 47 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS ST PAUL MN 1145 PM CDT FRI JUL 18 1986 AT 1130 PM...THUNDERSTORMS...WITH HEAVY TO LOCALLY INTENSE RAINFALL.. CONTINUED TO DEVELOP ACROSS PARTS OF SOUTHWEST INTO CENTRAL MINNESOTA. HAIL...STRONG GUSTY WINDS AND DANGEROUS LIGHTNING STRIKES ARE POSSIBLE WITH THESE THUNDERSTORMS. ONE BAND OF THESE THUNDERSTORMS EXTENDED FROM THE SOUTH DAKOTA BORDER... NEAR CANBY...TO WILLMAR...TO JUST NORTHWEST OF ST CLOUD. ANOTHER AREA REACHED FROM AROUND BRAINERD ACROSS MILLE LACS LAKE TO JUST EAST OF THE LAKE. IN WEST CENTRAL WISCONSIN...A THUNDERSTORM WITH VERY HEAVY RAINS WAS NORTHEAST OF LA CROSSE...JUST EAST OF BLACK RIVER FALLS. MOVEMENT WAS TO THE EAST AT 35 MILES AN HOUR. OTHERWISE...MOSTLY GARDEN VARIETY SHOWERS AND THUNDERSTORMS WERE SCATTERED ACROSS PARTS OF NORTH AND CENTRAL MINNESOTA...AND...NORTH TO SOUTH ACROSS WEST WISCONSIN FROM NEAR ASHLAND' THRU EAU CLAIRE TO NEAR LA CROSSE. DOM
Special weather statement, Jul 19, 2:35 AM CDT, 3 hours 8 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS ST PAUL MN 230 PM CDT SAT JUL 19 1986 SEVERE THUNDERSTORM WATCH 395 HAS BEEN CANCELLED OVER PORTIONS OF CENTRAL MINNESOTA. THE COUNTIES CLEARED OF THIS WATCH INCLUDE PINE.. KANABEC..MILLE LACS..ISANTI..MORRISON..BENTON..STEARNS..SHERBURNE.. MEEKER..WRIGHT AND MCLEOD. HARRISON SCATTERED ACROSS PARTS OF NORTH AND CENTRAL MINNESOTA...AND...NORTH TO SOUTH ACROSS WEST WISCONSIN FROM sNEAR ASHLAND THRU EAU CLAIRE TO NEAR LA CROSSE. DOM
Special weather statement, Jul 19, 3:34 AM CDT, 2 hours 9 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS ST PAUL MN 320 AM CDT SAT JUL 19 1986 SEVERE THUNDERSTORM WATCH 395 HAS BEEN CANCELLED OVER THE TWIN CITIES METROPOLITAN AREA. THE COUNTIES CLEARED FROM THIS SEVERE THUNDERSTORM WATCH ARE HENNEPIN..RAMSEY..CARVER..DAKOTA..SCOTT..WASHINGTON..CHISAGO AND SIBLEY. AT 320 AM THIS MORNING A NUMEROUS THUNDERSTORMS CONTINUED TO MOVE NORTHEAST ALONG A COLD FRONT FROM SOUTHEAST SOUTH DAKOTA TO ACROSS SOUTHERN MINNESOTA. THE SEVERE THUNDERSTORM WATCH CONTINUES TO BE IN EFFECT UNTIL 600 AM FROM NEW ULM AND ST PETER IN SOUTH CENTRAL MINNESOTA THROUGH MANKATO..FAIRBAULT..ROSCHESTER TO RED WING AND WINONA ON THE MISSISSIPPI RIVER. A LARGE PORTION OF WEST CENTRAL WISCONSIN ALSO REMAINS IN THE SEVERE THUNDERSTORM WATCH THIS MORNING. HARRISON
Local storm report, Jul 19, 4:00 AM CDT, 1 hour 43 minutes before
STORM REPORT NATIONAL WEATHER SERVICE ST CLOUD MN 325 AM CDT SAT JUL 19 1986 TIME EVENT 19 JUL. WSO ST. CLOUD RECORDED 1.60 INCHES OF RAIN IN 35 MINUTES..1220 AM CDT TO 1255 AM CDT. FRASER
Special weather statement, Jul 19, 4:03 AM CDT, 1 hour 40 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 400 AM CDT SAT JUL 19 1986 AT 355 AM...THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUED TO MOVE EAST AT 40 MILES AN HOUR THROUGH SOUTHERN MINNESOTA AND WESTERN WISCONSIN. THESE STORMS HAVE DECREASED SOMEWHAT IN STRENGTH SINCE 300 AM...BUT COULD STILL PRODUCE STRONG GUSTY WINDS OF 40 TO 50 MILES AN HOUR... SMALL HAIL...AND DEADLY LIGHTNING. THE VERY HEAVY RAINFALL PRODUCED BY SOME OF THESE STORMS COULD POSSIBLY CAUSE SOME PONDING OF WATER IN LOW LYING FIELDS AND UNDERPASSES. THE STRONGEST THUNDERSTORMS WERE IN A 40 MILE WIDE LINE FROM CORNELL IN WEST CENTRAL WISCONSIN...SOUTHWEST TO LAKE CITY MINNESOTA...TO OWATONNA TO FAIRMONT TO SIOUX CITY IOWA. PERSONS ENGAGED IN OUTDOOR ACTIVITIES SHOULD REMAIN ALERT TO CHANGING WEATHER CONDITIONS AND BE PREPARED TO TAKE APPROPRIATE PROTECTIVE ACTIONS IF THESE STRONG THUNDERSTORMS APPROACH. KRAFT
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 7:06 PM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi | 54 min |
| Jul 19, 12:42 AM CDT | Severe Thunderstorm Warning | MPX | Benton, Mille Lacs, Sherburne | 48 min |
| Jul 19, 12:42 AM CDT | Severe Thunderstorm Warning | MPX | Isanti | 48 min |
| Jul 19, 12:42 AM CDT | Severe Thunderstorm Warning | MPX | Meeker, Wright | 48 min |
| Jul 19, 1:15 AM CDT | Severe Thunderstorm Warning | MPX | Carver, Hennepin | 60 min |
| Jul 19, 1:15 AM CDT | Severe Thunderstorm Warning | MPX | Anoka, Isanti | 60 min |
| Jul 19, 1:32 AM CDT | Severe Thunderstorm Warning | MPX | Washington | 58 min |
| Jul 19, 1:32 AM CDT | Severe Thunderstorm Warning | MPX | Chisago | 58 min |
| Jul 19, 1:32 AM CDT | Severe Thunderstorm Warning | MPX | Ramsey | 58 min |
| Jul 19, 2:09 AM CDT | Severe Thunderstorm Warning | MPX | Brown, Nicollet | 51 min |
| Jul 19, 2:51 AM CDT | Severe Thunderstorm Warning | MPX | Le Sueur | 54 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.