Alert archive / Minnesota / Tornado Warnings in 1986

Tornado Warning 11, NWS Twin Cities, MN

July 26, 1986Renville County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jul 26, 1986, 7:47 PM CDT for Renville County, Minnesota. It was in force for 43 min.

The area

The counties it named.

The facts

Issued
Jul 26, 1986, 7:47 PM CDT (00:47 UTC)
Expired
Jul 26, 1986, 8:30 PM CDT
In force
43 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Renville 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, 0.8 hours before the alert went out and 107 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.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 1986-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 441 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 1986-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 175 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
441 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
936 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
175 m²/s²
0-3 km storm-relative helicity
290 m²/s²
Significant tornado parameter
0.3
Supercell composite
7.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMSP 270050 COR
TORMSP
MNC129-270130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN...CORRECTION...
747 PM CDT SAT JUL 26 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 830 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF

CENTRAL MINNESOTA...RENVILLE

AT 740 PM CDT...LAW ENFORCEMENT OFFICIALS REPORTED A TORNADO
NEAR SACRED HEART MOVING SOUTHEAST. IN ADDITION NUMEROUS REPORTS
OF FUNNEL CLOUDS HAVE BEEN REPORTED IN RENVILLE COUNTY FROM
THE TOWNS OF SACRED HEART..DANUBE TO OLIVIA.

MOVEMENT OF THE TORNADO PRODUCING THUNDERSTORM WAS SOUTHEAST AT
10 TO 15 MPH.

IF YOU ARE IN THE PATH OF THIS TORNADO...HEA/D FOR THE BASEMENT.
JHM

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 26, 7:13 PM CDTSevere Thunderstorm WarningMPXRenville47 min
Jul 26, 8:36 PM CDTTornado WarningMPXRedwood, Renville24 min
Jul 26, 9:10 PM CDTSevere Thunderstorm WarningMPXRedwood, Renville50 min
Jul 26, 9:35 PM CDTSevere Thunderstorm WarningMPXYellow Medicine55 min
Jul 26, 10:06 PM CDTSevere Thunderstorm WarningMPXRedwood, Renville54 min
Jul 26, 10:30 PM CDTSevere Thunderstorm WarningMPXYellow Medicine60 min
Jul 26, 11:15 PM CDTSevere Thunderstorm WarningMPXPope60 min
Jul 26, 11:23 PM CDTSevere Thunderstorm WarningMPXRedwood, Renville59 min
Jul 27, 3:47 PM CDTSevere Thunderstorm WarningMPXDakota38 min
Jul 27, 5:26 PM CDTSevere Thunderstorm WarningMPXFillmore, Olmsted49 min
Jul 27, 6:56 PM CDTSevere Thunderstorm WarningMPXFillmore, Mower34 min

Nearby

Tornado Warnings in Minnesota, 1986Every tornado warning in 1986Tornadoes 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.