Alert archive / Minnesota / Mesoscale Discussions in 2005

Mesoscale Discussion 1948

August 9, 200517 counties in Minnesota; 12 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Aug 9, 2005, 11:51 AM CDT for 17 counties in Minnesota; 12 counties in Wisconsin. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Aug 9, 2005, 11:51 AM CDT (16:51 UTC)
Expired: Aug 9, 2005, 1:15 PM CDT
In force: 84 min
Issued by: the Storm Prediction Center

All 29 counties

Anoka County, MN, Benton County, MN, Carver County, MN, Chisago County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Pine County, MN, Ramsey County, MN, Sherburne County, MN, Stearns County, MN, Washington County, MN, Wright County, MN, Barron County, WI, Burnett County, WI, Chippewa County, WI, Douglas County, WI, Dunn County, WI, Iron County, WI, Polk County, WI, Price County, WI, Rusk County, WI, Saint Croix County, WI, Sawyer County, WI, Washburn County, WI

The radar

The Minneapolis radar (KMPX), 109 km from the middle of the area, began a volume at 16:51 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, 4.9 hours before the alert went out and 110 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: 2206 J/kg
Mixed-layer CIN: -140 J/kg
Mixed-layer LCL: 1490 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: -12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Aug 8, 11:08 PM CDT	Mesoscale Discussion	SPC	Becker, Clay, Wilkin	97 min
Aug 9, 12:50 AM CDT	Severe Thunderstorm Watch	SPC	Aitkin, Benton, Carlton, Crow Wing, Douglas, Grant and 11 more	6 hr
Aug 9, 2:36 AM CDT	Mesoscale Discussion	SPC	Aitkin, Benton, Carlton, Crow Wing, Douglas, Grant and 10 more	114 min
Aug 9, 5:05 AM CDT	Mesoscale Discussion	SPC	Carlton, Pine	115 min
Aug 9, 11:25 AM CDT	Mesoscale Discussion	SPC	Blue Earth, Brown, Cottonwood, Faribault, Jackson, Le Sueur and 11 more	95 min
Aug 9, 1:45 PM CDT	Severe Thunderstorm Watch	SPC	Dodge, Fillmore, Goodhue, Houston, Mower, Olmsted and 3 more	7 hr
Aug 9, 2:20 PM CDT	Severe Thunderstorm Watch	SPC	Blue Earth, Brown, Carver, Cottonwood, Dakota, Dodge and 16 more	7 hr
Aug 9, 5:26 PM CDT	Mesoscale Discussion	SPC	Fillmore, Houston, Mower, Winona	94 min
Aug 9, 5:45 AM CDT	Severe Thunderstorm Watch	SPC	Ashland, Bayfield, Burnett, Douglas, Florence, Forest and 6 more	5 hr
Aug 9, 5:55 PM CDT	Severe Thunderstorm Watch	SPC	Crawford, Richland, Vernon	4 hr

Nearby

Mesoscale Discussions in Minnesota, 2005 Mesoscale Discussions in Wisconsin, 2005 Every mesoscale discussion in 2005

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.