Alert archive / Minnesota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 37, NWS Twin Cities, MN

June 12, 1990Morrison County, Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 12, 1990, 1:10 AM CDT for Morrison County, Todd County, Minnesota. It was in force for 35 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jun 12, 1990, 1:10 AM CDT (06:10 UTC)
Expired
Jun 12, 1990, 1:45 AM CDT
In force
35 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Morrison County, MN, Todd County, MN

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
Jun 12, 1:30 AM CDTThunderstorm Wind 57Morrison, MN

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 6.2 hours before the alert went out and 153 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 1990-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 193 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 1990-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 497 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
193 J/kg
Mixed-layer CIN
-502 J/kg
Mixed-layer LCL
905 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
497 m²/s²
0-3 km storm-relative helicity
806 m²/s²
Significant tornado parameter
0.0
Supercell composite
15.8

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
Jun 12, 12:38 AM CDTSevere Thunderstorm WarningMPXPope, Stearns37 min
Jun 12, 4:45 PM CDTSevere Thunderstorm WarningMPXCarver, McLeod, Sibley60 min
Jun 12, 5:01 PM CDTSevere Thunderstorm WarningMPXScott44 min
Jun 12, 5:02 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Le Sueur28 min
Jun 12, 5:34 PM CDTSevere Thunderstorm WarningMPXDakota, Hennepin, Ramsey41 min
Jun 12, 5:55 PM CDTSevere Thunderstorm WarningMPXWashington50 min
Jun 12, 6:03 PM CDTSevere Thunderstorm WarningMPXRice27 min
Jun 12, 6:13 PM CDTSevere Thunderstorm WarningMPXDakota32 min
Jun 12, 6:29 PM CDTSevere Thunderstorm WarningMPXGoodhue31 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.