Alert archive / Minnesota / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 104, NWS Twin Cities, MN

July 27, 1987Faribault County, Freeborn County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 27, 1987, 8:13 PM CDT for Faribault County, Freeborn County, Minnesota. It was in force for 47 min.

The area

The counties it named.

The facts

Issued
Jul 27, 1987, 8:13 PM CDT (01:13 UTC)
Expired
Jul 27, 1987, 9:00 PM CDT
In force
47 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Faribault County, MN, Freeborn 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, 1.2 hours before the alert went out and 131 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 1987-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1859 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 1987-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 124 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
1859 J/kg
Mixed-layer CIN
-134 J/kg
Mixed-layer LCL
1071 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
124 m²/s²
0-3 km storm-relative helicity
177 m²/s²
Significant tornado parameter
0.7
Supercell composite
3.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KRST 280113
SVRRST
MNC043-047-280200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ROCHESTER MN
813 PM CDT MON JUL 27 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL  900 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH CENTRAL MINNESOTA
          ...EASTERN FARIBAULT...FREEBORN
 
AT 815 PM CDT RADAR INDICATES A SEVERE THUNDERSTORM 15 MILES
NORTHWEST OF ALBERT LEA MN MOVING SOUTH AT 20 MPH. THIS WARNING
INCLUDES THE CITIES OF ALBERT LEA AND WELLS.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
BUSS

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 27, 6:43 PM CDT, 1 hour 30 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
642 PM CDT MON JUL 27 1986

INTENSE THUNDERSTORMS CONTINUED OVER STEELE AND WASECA COUNTIES
NEAR THE TOWNS OF WASECA...NEW RICHMOND...BLOOMING AND OWATONNA.
THESE STORMS ARE CAPABLE OF PRODUCING SMALL HAIL...GUSTY WINDS AND VERY
HEAVY RAINS.

THE STORMS WERE MOVING TO THE SOUTHWEST AT 25 MILES AN HOUR. THE STORMS
WILL BE MOVING INTO FARIBAULT AND NORTHWEST FREEBORN COUNTIES AROUND
7 PM CDT. PERSONS IN THESE COUNTIES INCLUDING THE TOWNS OF WELLS...
BLUE EARTH AND BRUSH CREEK SHOULD BE PREPARED TO TAKE SHELTER IF
THREATENING WEATHER APPROACHES.

STRONG THUNDERSTORMS WERE LOCATED ABOUT 40 MILES SOUTHWEST OF THE TWIN
CITIES FROM GLENCOE TO GAYLORD TO LE SUEUR IN SIBLEY COUNTY. THESE
STORMS WERE ALSO MOVING SOUTHWEST AT 25 MILES AN HOUR. PERSONS
IN WINTHROP AND NICOLLET SHOULD TAKE SHELTER IF THREATENING WEATHER
APPROACHES.
Special weather statement, Jul 27, 8:00 PM CDT, 13 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
758 PM CDT MON JUL 27 1986

THE NATIONAL WEATHER SERVICE HAS CANCELED THE SEVERE THUNDERSTORM
WARNING FOR SIBLEY COUNTY OF SOUTH CENTRAL MINNESOTA. THE WARNING WAS
TO HAVE EXPIRED AT 815 PM CDT.

THE THUNDERSTORM LOCATED NEAR GAYLORD HAS WEAKENED CONSIDERABLY
REDUCING THE THREAT OF SEVERE WEATHER.
JHM

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 7:24 PM CDTSevere Thunderstorm WarningMPXSibley51 min
Jul 27, 7:26 PM CDTSevere Thunderstorm WarningMPXFaribault, Freeborn49 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1987Every severe thunderstorm warning in 1987

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.