Alert archive / Minnesota / Mesoscale Discussions in 2003

Mesoscale Discussion 1668

July 7, 200315 counties in Minnesota; 15 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jul 7, 2003, 2:56 AM CDT for 15 counties in Minnesota; 15 counties in Wisconsin. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jul 7, 2003, 2:56 AM CDT (07:56 UTC)
Expired
Jul 7, 2003, 5:00 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 30 counties

Anoka County, MN, Benton County, MN, Carver County, MN, Chisago County, MN, Dakota County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Mille Lacs County, MN, Pine County, MN, Ramsey County, MN, Scott County, MN, Sherburne County, MN, Washington County, MN, Wright County, MN, Barron County, WI, Burnett County, WI, Chippewa County, WI, Douglas County, WI, Dunn County, WI, Eau Claire County, WI, Iron County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Price County, WI, Rusk County, WI, Saint Croix County, WI, Sawyer County, WI, Washburn County, WI

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 7.9 hours before the alert went out and 120 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 2003-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2301 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 2003-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 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
2301 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1006 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
8 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, 10:31 PM CDTMesoscale DiscussionSPCAitkin, Carlton, Cook, Crow Wing, Kanabec, Morrison and 2 more119 min
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, 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.