Alert archive / Minnesota / Mesoscale Discussions in 2003

Mesoscale Discussion 1583

July 2, 200320 counties in Minnesota; 8 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jul 2, 2003, 5:14 PM CDT for 20 counties in Minnesota; 8 counties in Wisconsin. It was in force for 61 min.

The area

The outline as issued.

The facts

Issued
Jul 2, 2003, 5:14 PM CDT (22:14 UTC)
Expired
Jul 2, 2003, 6:15 PM CDT
In force
61 min
Issued by
the Storm Prediction Center
All 28 counties

Aitkin County, MN, Anoka County, MN, Benton County, MN, Carlton County, MN, Cass County, MN, Chisago County, MN, Crow Wing County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Mille Lacs County, MN, Morrison County, MN, Pine County, MN, Ramsey County, MN, Sherburne County, MN, Stearns County, MN, Todd County, MN, Wadena County, MN, Washington County, MN, Wright County, MN, Barron County, WI, Burnett County, WI, Dunn County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Saint Croix County, WI, Washburn County, WI

The radar

The Duluth radar (KDLH), 137 km from the middle of the area, began a volume at 22:16 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.2 hours before the alert went out and 146 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 2003-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 675 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 2003-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 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
675 J/kg
Mixed-layer CIN
-211 J/kg
Mixed-layer LCL
1181 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
57 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 2, 11:00 AM CDTMesoscale DiscussionSPCKittson, Marshall, Norman, Pennington, Polk, Red Lake60 min
Jul 2, 11:20 AM CDTSevere Thunderstorm WatchSPCBecker, Clay, Clearwater, Kittson, Mahnomen, Marshall and 7 more6 hr
Jul 2, 1:27 PM CDTMesoscale DiscussionSPCAitkin, Becker, Beltrami, Cass, Clay, Clearwater and 18 more2 hr
Jul 2, 2:40 PM CDTSevere Thunderstorm WatchSPCAitkin, Carlton, Cass, Crow Wing, Hubbard, Itasca and 4 more5 hr
Jul 2, 3:30 PM CDTMesoscale DiscussionSPCBenton, Big Stone, Chippewa, Douglas, Grant, Kandiyohi and 13 more2 hr

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.