Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 21, NWS Twin Cities, MN

April 26, 1986Olmsted County, Wabasha County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 26, 1986, 11:00 PM CST for Olmsted County, Wabasha County, Minnesota. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
Apr 26, 1986, 11:00 PM CST (05:00 UTC)
Expired
Apr 27, 1986, 12:00 AM CST
In force
60 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Olmsted County, MN, Wabasha 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, 5.0 hours before the alert went out and 129 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 1986-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1986-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1228 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
272 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KRST 270500
SVRRST
MNC099-157-109-270600-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ROCHESTER MN
1100 PM CST SAT APR 26 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 1200 AM CST FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF


SOUTHEAST MINNESOTA...MOWER...WABASHA AND OLMSTED

 THE WARNING INCLUDES THE CITIES OF AUSTIN..ROCHESTER AND
WABASHA.

AT 1055 PM CDT RADAR INDICATED A LINE OF THUNDERSTORMS FROM
THE IOWA BORDER TO SOUTHWEST OF AUSTIN MN. TO 15 MILES WEST
OF REDWING MN MOVING TO THE EAST AT 25 MPH.

 A SEVERE THUNDERSTORM PRODUCES STRONG DAMAGING WINDS..LARGE HAIL
 ..VERY HEAVY RAIN AND DANGEROjUS LIGHTNING.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 26, 8:17 PM CSTSevere Thunderstorm WarningMPXFreeborn, Steele, Waseca3 hr
Apr 26, 10:08 PM CSTSevere Thunderstorm WarningMPXDakota, Hennepin, Scott52 min
Apr 26, 10:08 PM CSTSevere Thunderstorm WarningMPXRamsey52 min
Apr 26, 10:19 PM CSTSevere Thunderstorm WarningMPXAnoka41 min
Apr 26, 10:48 PM CSTSevere Thunderstorm WarningMPXWashington42 min
Apr 26, 11:00 PM CSTSevere Thunderstorm WarningMPXMower60 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.