Alert archive / Minnesota / Mesoscale Discussions in 2003

Mesoscale Discussion 1664

July 6, 20038 counties in Minnesota; Douglas County, Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jul 6, 2003, 10:31 PM CDT for 8 counties in Minnesota; Douglas County, Wisconsin. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued
Jul 6, 2003, 10:31 PM CDT (03:31 UTC)
Expired
Jul 7, 2003, 12:30 AM CDT
In force
119 min
Issued by
the Storm Prediction Center

Counties Aitkin County, MN, Carlton County, MN, Cook County, MN, Crow Wing County, MN, Kanabec County, MN, Morrison County, MN, Pine County, MN, Todd County, MN, Douglas County, WI

The radar

The Duluth radar (KDLH), 33 km from the middle of the area, began a volume at 03:32 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, 3.5 hours before the alert went out and 201 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, International Fa, MN at 00:00Z on 2003-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, International Fa, MN at 00:00Z on 2003-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -184 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1757 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
-184 m²/s²
0-3 km storm-relative helicity
34 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.

IssuedProductOfficeCountiesLasted
Jul 6, 7:45 PM CDTTornado WatchSPCAnoka, Benton, Big Stone, Brown, Carver, Chippewa and 30 more6 hr
Jul 6, 8:05 PM CDTTornado WatchSPCAitkin, Carlton, Cass, Cook, Crow Wing, Itasca and 6 more6 hr
Jul 6, 11:06 PM CDTMesoscale DiscussionSPCAnoka, Benton, Brown, Carver, Chippewa, Chisago and 28 more114 min
Jul 7, 1:25 AM CDTMesoscale DiscussionSPCCarver, Dakota, Dodge, Fillmore, Freeborn, Goodhue and 14 more95 min
Jul 7, 2:40 AM CDTSevere Thunderstorm WatchSPCDodge, Fillmore, Goodhue, Houston, Mower, Olmsted and 4 more4 hr
Jul 7, 2:56 AM CDTMesoscale DiscussionSPCAnoka, Benton, Carver, Chisago, Dakota, Hennepin and 9 more2 hr
Jul 7, 4:22 AM CDTMesoscale DiscussionSPCFillmore, Houston, Olmsted, Winona83 min
Jul 6, 8:46 PM CDTMesoscale DiscussionSPCKenosha, Milwaukee, Racine, Rock, Walworth, Waukesha59 min
Jul 7, 12:54 PM CDTMesoscale DiscussionSPCAdams, Brown, Calumet, Columbia, Dane, Dodge and 21 more66 min
Jul 7, 2:35 PM CDTMesoscale DiscussionSPCAdams, Brown, Calumet, Columbia, Crawford, Dane and 32 more115 min

Nearby

Mesoscale Discussions in Minnesota, 2003Mesoscale Discussions in Wisconsin, 2003Every 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.