Alert archive / Minnesota / Mesoscale Discussions in 2004

Mesoscale Discussion 662

May 11, 20046 counties in Minnesota

The Storm Prediction Center issued this mesoscale discussion at May 11, 2004, 7:22 PM CDT for 6 counties in Minnesota. It was in force for 113 min.

The area

The outline as issued.

The facts

Issued: May 11, 2004, 7:22 PM CDT (00:22 UTC)
Expired: May 11, 2004, 9:15 PM CDT
In force: 113 min
Issued by: the Storm Prediction Center

Counties Becker County, MN, Beltrami County, MN, Cass County, MN, Clearwater County, MN, Hubbard County, MN, Mahnomen County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 149 km from the middle of the area, began a volume at 00:25 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.

Severe Thunderstorm Watch 191May 11, 8:45 PM CDT

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 0.4 hours before the alert went out and 218 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 622 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 872 m²/s²
0-3 km storm-relative helicity: 1563 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

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
May 11, 7:00 PM CDT	Tornado Watch	SPC	Becker, Beltrami, Clay, Clearwater, Hubbard, Mahnomen and 4 more	6 hr
May 11, 8:45 PM CDT	Severe Thunderstorm Watch	SPC	Becker, Beltrami, Big Stone, Cass, Clay, Clearwater and 15 more	5 hr
May 11, 10:08 PM CDT	Mesoscale Discussion	SPC	Big Stone, Grant, Lac qui Parle, Lincoln, Lyon, Otter Tail and 6 more	2 hr
May 12, 11:29 AM CDT	Mesoscale Discussion	SPC	Dakota, Dodge, Fillmore, Freeborn, Goodhue, Houston and 6 more	2 hr
May 12, 12:20 PM CDT	Severe Thunderstorm Watch	SPC	Dodge, Fillmore, Freeborn, Goodhue, Houston, Mower and 4 more	6 hr
May 12, 2:22 PM CDT	Mesoscale Discussion	SPC	Chisago, Dakota, Dodge, Fillmore, Freeborn, Goodhue and 9 more	83 min
May 12, 3:37 PM CDT	Mesoscale Discussion	SPC	Dakota, Dodge, Fillmore, Freeborn, Goodhue, Houston and 7 more	83 min

Nearby

Mesoscale Discussions in Minnesota, 2004 Every mesoscale discussion in 2004

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.