Alert archive / Minnesota / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 128, NWS Twin Cities, MN

September 7, 1991Kandiyohi County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 7, 1991, 8:14 PM CDT for Kandiyohi County, Minnesota. It was in force for 67 min.

The area

The counties it named.

The facts

Issued
Sep 7, 1991, 8:14 PM CDT (01:14 UTC)
Expired
Sep 7, 1991, 9:21 PM CDT
In force
67 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Kandiyohi County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 1.2 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 1991-09-08Temperature 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 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 1991-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 224 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1227 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
224 m²/s²
0-3 km storm-relative helicity
295 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Sep 7, 7:55 PM CDTFlash Flood WarningMPXCarver, McLeod, Renville, Sibley3 hr
Sep 7, 8:14 PM CDTSevere Thunderstorm WarningMPXMeeker2 hr
Sep 7, 11:11 PM CDTFlash Flood WarningMPXMeeker64 min
Sep 7, 11:11 PM CDTFlash Flood WarningMPXStearns2 hr

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.