Alert archive / Minnesota / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 86, NWS Sioux Falls, SD

September 13, 1993Pipestone County, Rock County, Minnesota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Sep 13, 1993, 1:39 AM CDT for Pipestone County, Rock County, Minnesota. It was in force for 66 min.

The area

The counties it named.

The facts

Issued
Sep 13, 1993, 1:39 AM CDT (06:39 UTC)
Expired
Sep 13, 1993, 2:45 AM CDT
In force
66 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

Counties Pipestone County, MN, Rock County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 6.7 hours before the alert went out and 239 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 1993-09-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2258 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 1993-09-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 175 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
2258 J/kg
Mixed-layer CIN
-152 J/kg
Mixed-layer LCL
1159 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
175 m²/s²
0-3 km storm-relative helicity
267 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.1

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.

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 13, 1:07 AM CDTSevere Thunderstorm WarningFSDMinnehaha68 min
Sep 13, 1:39 AM CDTSevere Thunderstorm WarningFSDMoody44 min
Sep 13, 3:05 AM CDTSevere Thunderstorm WarningFSDCottonwood, Jackson40 min
Sep 13, 3:18 AM CDTSevere Thunderstorm WarningFSDJackson42 min
Sep 13, 1:51 AM CDTSevere Thunderstorm WarningFSDOsceola54 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1993Every severe thunderstorm warning in 1993

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.