Alert archive / Minnesota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 102, NWS Twin Cities, MN

August 25, 1990Morrison County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 25, 1990, 11:07 PM CDT for Morrison County, Minnesota. It was in force for 53 min.

The area

The counties it named.

The facts

Issued
Aug 25, 1990, 11:07 PM CDT (04:07 UTC)
Expired
Aug 26, 1990, 12:00 AM CDT
In force
53 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Morrison 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, 4.1 hours before the alert went out and 139 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 1990-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3299 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 1990-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 74 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
3299 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
1021 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
74 m²/s²
0-3 km storm-relative helicity
200 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.2

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.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 25, 8:05 PM CDTSevere Thunderstorm WarningMPXTodd55 min
Aug 25, 11:52 PM CDTSevere Thunderstorm WarningMPXPope38 min
Aug 26, 12:20 AM CDTSevere Thunderstorm WarningMPXStearns55 min
Aug 26, 12:36 AM CDTSevere Thunderstorm WarningMPXMorrison, Todd54 min
Aug 26, 12:52 AM CDTSevere Thunderstorm WarningMPXBenton38 min
Aug 26, 1:11 AM CDTSevere Thunderstorm WarningMPXMille Lacs, Sherburne64 min
Aug 26, 3:06 AM CDTSevere Thunderstorm WarningMPXAnoka, Hennepin54 min
Aug 26, 5:42 AM CDTSevere Thunderstorm WarningMPXOlmsted, Wabasha63 min
Aug 26, 6:22 AM CDTSevere Thunderstorm WarningMPXWinona53 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1990Every severe thunderstorm warning in 1990

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.