Alert archive / Minnesota / Mesoscale Discussions in 2003

Mesoscale Discussion 1146

May 30, 200326 counties in Minnesota; Burnett County, Douglas County, Washburn County, Wisconsin

The Storm Prediction Center issued this mesoscale discussion at May 30, 2003, 1:23 AM CDT for 26 counties in Minnesota; Burnett County, Douglas County, Washburn County, Wisconsin. It was in force for 67 min.

The area

The outline as issued.

The facts

Issued: May 30, 2003, 1:23 AM CDT (06:23 UTC)
Expired: May 30, 2003, 2:30 AM CDT
In force: 67 min
Issued by: the Storm Prediction Center

All 29 counties

Aitkin County, MN, Becker County, MN, Beltrami County, MN, Benton County, MN, Carlton County, MN, Cass County, MN, Clearwater County, MN, Crow Wing County, MN, Hubbard County, MN, Itasca County, MN, Kanabec County, MN, Kittson County, MN, Koochiching County, MN, Lake of the Woods County, MN, Mahnomen County, MN, Marshall County, MN, Mille Lacs County, MN, Morrison County, MN, Pennington County, MN, Pine County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Saint Louis County, MN, Todd County, MN, Wadena County, MN, Burnett County, WI, Douglas County, WI, Washburn County, WI

The radar

The Duluth radar (KDLH), 167 km from the middle of the area, began a volume at 06:26 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.

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 6.4 hours before the alert went out and 221 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 153 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 2268 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 29, 7:37 PM CDT	Mesoscale Discussion	SPC	Aitkin, Becker, Beltrami, Carlton, Cass, Clay and 18 more	113 min
May 29, 10:46 PM CDT	Mesoscale Discussion	SPC	Aitkin, Becker, Beltrami, Carlton, Cass, Chisago and 19 more	89 min
May 29, 11:30 PM CDT	Severe Thunderstorm Watch	SPC	Aitkin, Becker, Beltrami, Benton, Carlton, Cass and 20 more	6 hr
May 30, 4:32 AM CDT	Mesoscale Discussion	SPC	Houston	58 min
May 30, 2:06 PM CDT	Mesoscale Discussion	SPC	Dane, Green, Jefferson, Rock, Walworth	2 hr
May 30, 2:08 PM CDT	Mesoscale Discussion	SPC	Dane, Green, Jefferson, Rock, Walworth	3 hr
May 30, 3:45 PM CDT	Tornado Watch	SPC	Columbia, Dane, Dodge, Green, Iowa, Jefferson and 6 more	5 hr
May 30, 5:54 PM CDT	Mesoscale Discussion	SPC	Adams, Brown, Calumet, Clark, Forest, Juneau and 16 more	96 min
May 30, 6:55 PM CDT	Mesoscale Discussion	SPC	Columbia, Dane, Dodge, Green, Iowa, Jefferson and 6 more	95 min

Nearby

Mesoscale Discussions in Minnesota, 2003 Mesoscale Discussions in Wisconsin, 2003 Every mesoscale discussion in 2003

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.