Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 108, NWS Twin Cities, MN

July 18, 1986Kandiyohi County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 18, 1986, 7:06 PM CDT for Kandiyohi County, Minnesota. It was in force for 54 min.

The area

The counties it named.

The facts

Issued
Jul 18, 1986, 7:06 PM CDT (00:06 UTC)
Expired
Jul 18, 1986, 8:00 PM CDT
In force
54 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Kandiyohi 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, 0.1 hours before the alert went out and 115 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 1986-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 235 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 1986-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 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
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

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, 1:12 PM CDT, 5 hours 54 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
110 PM CDT FRI JUL 18 1986

...HOT AND HUMID WEATHER CONTINUES OVER SOUTHERN MINNESOTA TODAY...

TEMPERTURES IN SOUTHERN MINNESOTA WILL BE IN THE UPPER 80S TO LOWER 90S
THIS AFTERNOON PUSHING THE APPARENT TEMPERATURE...OR HEAT INDEX...TO
BETWEEN 95 AND 105 DEGREES..WITH ISOLATED READINGS SLIGHTLY ABOVE
THE 105 DEGREE MARK. THE APPARENT TEMPERATURE...OR HEAT INDEX...IS A
MEASURE OF THE CONTRIBUTION HUMIDITY MAKES WITH HIGH TEMPERATURES TO
REDUCE THE HUMAN BODYS ABILITY TO COOL ITSELF.

THERE COULD BE..SLIGHT..RELIEF ON SATURDAY...BUT IN GENERAL THE WARM
AND HUMID AIR IS EXPECTED BE AROUND UNTIL SUNDAY...WHEN COOLER AIR IS
EXPECTED TO PUSH IN FROM THE NORTHWEST.

THOSE PEOPLE WHO ARE WORKING OUT OF DOORS...THOSE LIVING IN
UNAIRCONDITIONED SPACES...THE ELDERLY...AND PEOPLE IN POOR HEALTH
SHOULD TAKE PRECAUTIONS AS PROLONGED EXPOSURE TO THESE CONDITIONS
CAN LEAD _TO HEAT EXHAUSTION OR POSSIBLE HEAT STROKE.
WILLIS
Special weather statement, Jul 18, 5:30 PM CDT, 1 hour 36 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MN
530 PM CDT FRI JUL 18 1986.

...SEVERE THUNDERSTORM WATCH FOR EAST CENTRAL MINNESOTA UNTIL 10 PM
CDT...

...SEVERE THUNDERSTORM WARNING FOR SHERBURNE UNTIL 6 PM CDT

AT 5 30 PM CDT RADAR SHOWED THE STRONGEST STORM IN EXTREME SOUTHERN
MILLE LACS COUNTY AND EASTERN SHERBURNE COUTNY MOVING EAST AT 25 MPH.
1/2 INCH HAIL AND WINDS OF 50 TO 55 MPH HAVE BEEN REPORTED FROM THESE
STORMS rBY THE PRINCETON RADIO STATION AT 520 PM CDT

RUBIN/NISTLER
Special weather statement, Jul 18, 5:50 PM CDT, 1 hour 16 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MN
550 PM CDT FRI JUL 18 1986.

...SEVERE THUNDERSTORM WATCH FOR EAST CENTRAL MINNESOTA UNTIL 10 PM
CDT...

...SEVERE THUNDERSTORM WARNING FOR SHERBURNE UNTIL 6 PM CDT HAS BEEN
CANCELED...

AT 5 50 PM CDT RADAR SHOWED THE STRONG THUNDERSTORMS HAVE MOVED EAST
OF SHERBURNE COUNTY. 1/2 INCH HAIL AND WINDS OF 50 TO 55 MPH HAD
BEEN REPORTED FROM THESE STORMS BY THE PRINCETON RADIO STATION AT 520
PM CDT

RUBIN/NISTLER

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 12:42 AM CDTSevere Thunderstorm WarningMPXBenton, Mille Lacs, Sherburne48 min
Jul 19, 12:42 AM CDTSevere Thunderstorm WarningMPXIsanti48 min
Jul 19, 12:42 AM CDTSevere Thunderstorm WarningMPXMeeker, Wright48 min
Jul 19, 1:15 AM CDTSevere Thunderstorm WarningMPXCarver, Hennepin60 min
Jul 19, 1:15 AM CDTSevere Thunderstorm WarningMPXAnoka, Isanti60 min
Jul 19, 1:32 AM CDTSevere Thunderstorm WarningMPXWashington58 min
Jul 19, 1:32 AM CDTSevere Thunderstorm WarningMPXChisago58 min
Jul 19, 1:32 AM CDTSevere Thunderstorm WarningMPXRamsey58 min
Jul 19, 2:09 AM CDTSevere Thunderstorm WarningMPXBrown, Nicollet51 min
Jul 19, 2:51 AM CDTSevere Thunderstorm WarningMPXLe Sueur54 min
Jul 19, 5:43 AM CDTSevere Thunderstorm WarningMPXFillmore, Houston, Winona47 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.