Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 91, NWS Twin Cities, MN

June 30, 1994Brown County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 30, 1994, 8:42 PM CDT for Brown County, Minnesota. It was in force for 48 min.

The area

The counties it named.

The facts

Issued
Jun 30, 1994, 8:42 PM CDT (01:42 UTC)
Expired
Jun 30, 1994, 9:30 PM CDT
In force
48 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Brown County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 1.7 hours before the alert went out and 112 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 1994-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2237 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 1994-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 266 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
2237 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
1140 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
266 m²/s²
0-3 km storm-relative helicity
383 m²/s²
Significant tornado parameter
4.4
Supercell composite
12.4

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
Jun 30, 7:01 PM CDTSevere Thunderstorm WarningMPXCarver, Sibley59 min
Jun 30, 7:13 PM CDTTornado WarningMPXCarver, McLeod32 min
Jun 30, 7:22 PM CDTSevere Thunderstorm WarningMPXHennepin68 min
Jun 30, 7:42 PM CDTTornado WarningMPXCarver33 min
Jun 30, 7:47 PM CDTTornado WarningMPXSibley28 min
Jun 30, 7:54 PM CDTSevere Thunderstorm WarningMPXLe Sueur, Nicollet51 min
Jun 30, 8:13 PM CDTTornado WarningMPXScott32 min
Jun 30, 8:21 PM CDTSevere Thunderstorm WarningMPXSibley39 min
Jun 30, 8:22 PM CDTSevere Thunderstorm WarningMPXNicollet68 min
Jun 30, 8:32 PM CDTTornado WarningMPXLe Sueur, Nicollet28 min
Jun 30, 8:49 PM CDTSevere Thunderstorm WarningMPXDakota, Scott21 min
Jun 30, 8:51 PM CDTTornado WarningMPXBlue Earth, Nicollet54 min
Jun 30, 9:41 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Waseca49 min
Jun 30, 9:41 PM CDTSevere Thunderstorm WarningMPXWatonwan49 min
Jun 30, 10:19 PM CDTTornado WarningMPXFreeborn26 min
Jun 30, 10:52 PM CDTSevere Thunderstorm WarningMPXFreeborn38 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1994Every severe thunderstorm warning in 1994

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.