Alert archive / Minnesota / Severe Thunderstorm Watches in 2008

Severe Thunderstorm Watch 620

June 27, 200845 counties in Minnesota; 5 counties in Wisconsin

The Storm Prediction Center issued this severe thunderstorm watch at Jun 27, 2008, 1:09 PM CDT for 45 counties in Minnesota; 5 counties in Wisconsin. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jun 27, 2008, 1:09 PM CDT (18:09 UTC)
Expired
Jun 27, 2008, 8:00 PM CDT
In force
7 hr
Issued by
the Storm Prediction Center
All 50 counties

Aitkin County, MN, Anoka County, MN, Benton County, MN, Blue Earth County, MN, Brown County, MN, Carlton County, MN, Carver County, MN, Cass County, MN, Chisago County, MN, Crow Wing County, MN, Dakota County, MN, Dodge County, MN, Faribault County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Isanti County, MN, Itasca County, MN, Kanabec County, MN, Kandiyohi County, MN, Lake County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Mower County, MN, Nicollet County, MN, Pine County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Saint Louis County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Steele County, MN, Todd County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Wright County, MN, Burnett County, WI, Douglas County, WI, Pierce County, WI, Polk County, WI, Saint Croix County, WI

The radar

The Duluth radar (KDLH), 119 km from the middle of the area, began a volume at 18:12 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Warnings issued inside it

20 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 27, 1:11 PM CDTSevere Thunderstorm WarningDLHLake, Saint Louis26 min
Jun 27, 1:16 PM CDTSevere Thunderstorm WarningDLHSaint Louis59 min
Jun 27, 1:35 PM CDTSevere Thunderstorm WarningDLHAitkin, Cass, Crow Wing55 min
Jun 27, 1:47 PM CDTSevere Thunderstorm WarningDLHLake17 min
Jun 27, 1:56 PM CDTSevere Thunderstorm WarningDLHAitkin, Carlton, Saint Louis64 min
Jun 27, 2:08 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Watonwan52 min
Jun 27, 2:33 PM CDTSevere Thunderstorm WarningDLHCass, Crow Wing57 min
Jun 27, 2:46 PM CDTSevere Thunderstorm WarningDLHAitkin34 min
Jun 27, 2:58 PM CDTSevere Thunderstorm WarningDLHAitkin, Crow Wing25 min
Jun 27, 3:07 PM CDTTornado WarningMPXBenton23 min
Jun 27, 3:29 PM CDTTornado WarningMPXBenton, Mille Lacs31 min
Jun 27, 3:57 PM CDTSevere Thunderstorm WarningDLHCass49 min
Jun 27, 4:03 PM CDTSevere Thunderstorm WarningMPXCarver, Hennepin, Scott42 min
Jun 27, 4:43 PM CDTSevere Thunderstorm WarningDLHAitkin, Cass, Crow Wing62 min
Jun 27, 4:51 PM CDTSevere Thunderstorm WarningMPXFreeborn39 min
Jun 27, 5:47 PM CDTSevere Thunderstorm WarningDLHSaint Louis12 min
Jun 27, 6:45 PM CDTSevere Thunderstorm WarningMPXMcLeod, Sibley38 min
Jun 27, 6:48 PM CDTSevere Thunderstorm WarningMPXRenville42 min
Jun 27, 6:52 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Le Sueur, Nicollet, Sibley53 min
Jun 27, 7:05 PM CDTTornado WarningDLHItasca25 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 6.2 hours before the alert went out and 156 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 2008-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 374 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 2008-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -16 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
374 J/kg
Mixed-layer CIN
-121 J/kg
Mixed-layer LCL
791 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-16 m²/s²
0-3 km storm-relative helicity
1 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 26, 9:46 PM CDTSevere Thunderstorm WatchSPCCottonwood, Jackson, Lincoln, Lyon, Murray, Nobles and 2 more7 hr
Jun 27, 12:32 PM CDTMesoscale DiscussionSPCAitkin, Anoka, Becker, Beltrami, Benton, Blue Earth and 58 more2 hr
Jun 27, 3:41 PM CDTMesoscale DiscussionSPCAitkin, Anoka, Benton, Blue Earth, Brown, Carlton and 49 more94 min
Jun 27, 5:33 PM CDTMesoscale DiscussionSPCFillmore, Houston, Winona87 min
Jun 27, 5:46 PM CDTSevere Thunderstorm WatchSPCFillmore, Houston, Mower, Olmsted, Winona4 hr

Nearby

Severe Thunderstorm Watches in Minnesota, 2008Severe Thunderstorm Watches in Wisconsin, 2008Every severe thunderstorm watch in 2008

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; radar from the NEXRAD Level II archive.