Alert archive / Minnesota / Tornado Warnings in 1986

Tornado Warning 3, NWS Twin Cities, MN

May 12, 1986Carver County, McLeod County, Wright County, Minnesota

NWS Twin Cities, MN issued this tornado warning at May 12, 1986, 5:08 PM CDT for Carver County, McLeod County, Wright County, Minnesota. It was in force for 2 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
May 12, 1986, 5:08 PM CDT (22:08 UTC)
Expired
May 12, 1986, 5:10 PM CDT
In force
2 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Carver County, MN, McLeod County, MN, Wright 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
May 12, 5:15 PM CDTTornado F1Mcleod, 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 12:00Z, 10.1 hours before the alert went out and 34 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 12:00Z on 1986-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 62 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 12:00Z on 1986-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 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
62 J/kg
Mixed-layer CIN
-206 J/kg
Mixed-layer LCL
776 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
93 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
May 12, 3:39 PM CDTSevere Thunderstorm WarningMPXMcLeod26 min
May 12, 3:50 PM CDTSevere Thunderstorm WarningMPXRenville20 min
May 12, 4:10 PM CDTSevere Thunderstorm WarningMPXRedwood, Renville50 min
May 12, 4:10 PM CDTSevere Thunderstorm WarningMPXMcLeod50 min
May 12, 4:41 PM CDTTornado WarningMPXCarver, McLeod, Wright29 min
May 12, 5:30 PM CDTSevere Thunderstorm WarningMPXMeeker60 min
May 12, 5:34 PM CDTSevere Thunderstorm WarningMPXAnoka, Hennepin, Ramsey56 min
May 12, 5:34 PM CDTSevere Thunderstorm WarningMPXWashington56 min
May 12, 6:06 PM CDTSevere Thunderstorm WarningMPXCarver, McLeod, Wright24 min
May 12, 6:24 PM CDTSevere Thunderstorm WarningMPXCarver, McLeod, Wright6 min
May 12, 6:27 PM CDTSevere Thunderstorm WarningMPXCarver, Hennepin33 min

Nearby

Tornado Warnings in Minnesota, 1986Every tornado warning in 1986Tornadoes in 1986

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.