Alert archive / Minnesota / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 59, NWS Twin Cities, MN

July 2, 1989Kandiyohi County, Swift County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 2, 1989, 10:57 PM CDT for Kandiyohi County, Swift County, Minnesota. It was in force for 33 min.

The area

The counties it named.

The facts

Issued
Jul 2, 1989, 10:57 PM CDT (03:57 UTC)
Expired
Jul 2, 1989, 11:30 PM CDT
In force
33 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Kandiyohi County, MN, Swift 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, 4.0 hours before the alert went out and 143 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 1989-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1386 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 1989-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 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
1386 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
1650 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
122 m²/s²
Significant tornado parameter
0.2
Supercell composite
4.2

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 2, 10:57 PM CDT, 0 minutes before
RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
1040 PM CDT SUN JUL 2 1989

...SEVERE THUNDERSTORM WATCH UNTIL MIDNIGHT FOR NORTHERN AND CENTRAL
   MINNESOTA...

AT 1025 PM CDT...A LINE OF THUNDERSTORMS...75 MILES WIDE EXTENDED
FROM 45 MILES SOUTHWEST OF ALEXANDRIA TO 25 MILES NORTH OF DULUTH.
THUNDERSTORMS MOST LIKELY PRODUCING SEVERE WEATHER WERE LOCATED
IN CENTRAL POPE COUNTY OF WEST CENRTAL MINNESOTA.  OTHER STRONG
THUNDERSTORMS HAVE DECRESED SOME SINCE 930 PM.  THEY WERE LOCTED
FROM 35 MILES NORTH OF ALEXANDRIA...EAST TO 50 MILES WEST OF DULUTH.

THESE THUNDERSTOMS HAVE A HISTORY OF PRODUCING...HEAVY RAIN...STRONG
GUSTY WINDS...THREEQUARTER INCH HAIL AND FREQUENT VLIGHTNING STRIKES.

THUNDERSTORM MOVEMENT WAS SOUTHEAST 35 MILES AN HOUR.
DME

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 2, 9:54 PM CDTSevere Thunderstorm WarningMPXMorrison, Todd51 min
Jul 3, 12:45 AM CDTSevere Thunderstorm WarningMPXBenton, Sherburne, Stearns45 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1989Every severe thunderstorm warning in 1989

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.