Alert archive / Minnesota / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 18, NWS Twin Cities, MN

May 28, 1991Renville County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 28, 1991, 3:12 AM CDT for Renville County, Minnesota. It was in force for 33 min.

The area

The counties it named.

The facts

Issued
May 28, 1991, 3:12 AM CDT (08:12 UTC)
Expired
May 28, 1991, 3:45 AM CDT
In force
33 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Renville County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 8.2 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 1991-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 806 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 1991-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -15 square meters per square second.1939587897Sfc1 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
806 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1288 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
-15 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.8

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.

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 8:15 AM CDTSevere Thunderstorm WarningMPXRedwood, Renville45 min
May 28, 8:28 AM CDTSevere Thunderstorm WarningMPXBrown, Watonwan47 min
May 28, 9:17 AM CDTSevere Thunderstorm WarningMPXBlue Earth, Nicollet28 min
May 28, 9:19 AM CDTSevere Thunderstorm WarningMPXMcLeod, Sibley41 min
May 28, 9:19 AM CDTSevere Thunderstorm WarningMPXRenville22 min
May 28, 9:28 AM CDTSevere Thunderstorm WarningMPXLe Sueur, Waseca47 min
May 28, 9:47 AM CDTSevere Thunderstorm WarningMPXRice, Steele43 min
May 28, 10:10 AM CDTSevere Thunderstorm WarningMPXDodge, Goodhue20 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1991Every severe thunderstorm warning in 1991

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.