Alert archive / Minnesota / Mesoscale Discussions in 2003

Mesoscale Discussion 1144

May 29, 200325 counties in Minnesota; Burnett County, Douglas County, Washburn County, Wisconsin

The Storm Prediction Center issued this mesoscale discussion at May 29, 2003, 10:46 PM CDT for 25 counties in Minnesota; Burnett County, Douglas County, Washburn County, Wisconsin. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued
May 29, 2003, 10:46 PM CDT (03:46 UTC)
Expired
May 30, 2003, 12:15 AM CDT
In force
89 min
Issued by
the Storm Prediction Center
All 28 counties

Aitkin County, MN, Becker County, MN, Beltrami County, MN, Carlton County, MN, Cass County, MN, Chisago County, MN, Clearwater County, MN, Crow Wing County, MN, Hubbard County, MN, Isanti County, MN, Itasca County, MN, Kanabec County, MN, Koochiching County, MN, Mahnomen County, MN, Marshall County, MN, Mille Lacs County, MN, Morrison County, MN, Norman County, MN, Pennington County, MN, Pine County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Todd County, MN, Wadena County, MN, Burnett County, WI, Douglas County, WI, Washburn County, WI

The radar

The Duluth radar (KDLH), 196 km from the middle of the area, began a volume at 03:47 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

International Fa, MN (KINL), launched 00:00Z, 3.8 hours before the alert went out and 171 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 2003-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 153 joules per kilogram.LCLEL10008507005003002001001 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 2003-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 square meters per square second.1939587897Sfc1 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
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.

IssuedProductOfficeCountiesLasted
May 29, 7:37 PM CDTMesoscale DiscussionSPCAitkin, Becker, Beltrami, Carlton, Cass, Clay and 18 more113 min
May 29, 11:30 PM CDTSevere Thunderstorm WatchSPCAitkin, Becker, Beltrami, Benton, Carlton, Cass and 20 more6 hr
May 30, 1:23 AM CDTMesoscale DiscussionSPCAitkin, Becker, Beltrami, Benton, Carlton, Cass and 20 more67 min
May 30, 4:32 AM CDTMesoscale DiscussionSPCHouston58 min
May 30, 2:06 PM CDTMesoscale DiscussionSPCDane, Green, Jefferson, Rock, Walworth2 hr
May 30, 2:08 PM CDTMesoscale DiscussionSPCDane, Green, Jefferson, Rock, Walworth3 hr
May 30, 3:45 PM CDTTornado WatchSPCColumbia, Dane, Dodge, Green, Iowa, Jefferson and 6 more5 hr
May 30, 5:54 PM CDTMesoscale DiscussionSPCAdams, Brown, Calumet, Clark, Forest, Juneau and 16 more96 min
May 30, 6:55 PM CDTMesoscale DiscussionSPCColumbia, Dane, Dodge, Green, Iowa, Jefferson and 6 more95 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.