Alert archive / North Dakota / Mesoscale Discussions in 2004

Mesoscale Discussion 981

May 29, 20048 counties in Minnesota; 24 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at May 29, 2004, 7:04 PM CDT for 8 counties in Minnesota; 24 counties in North Dakota. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued: May 29, 2004, 7:04 PM CDT (00:04 UTC)
Expired: May 29, 2004, 9:00 PM CDT
In force: 116 min
Issued by: the Storm Prediction Center

All 32 counties

Becker County, MN, Clay County, MN, Douglas County, MN, Grant County, MN, Norman County, MN, Otter Tail County, MN, Polk County, MN, Wilkin County, MN, Barnes County, ND, Benson County, ND, Cass County, ND, Cavalier County, ND, Dickey County, ND, Eddy County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, LaMoure County, ND, Nelson County, ND, Pembina County, ND, Pierce County, ND, Ramsey County, ND, Ransom County, ND, Richland County, ND, Rolette County, ND, Sargent County, ND, Steele County, ND, Stutsman County, ND, Towner County, ND, Traill County, ND, Walsh County, ND, Wells County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 68 km from the middle of the area, began a volume at 00:04 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 nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 0.1 hours before the alert went out and 250 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: 2181 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 1118 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 221 m²/s²
0-3 km storm-relative helicity: 259 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 12.3

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 29, 9:21 PM CDT	Mesoscale Discussion	SPC	Big Stone, Brown, Chippewa, Cottonwood, Jackson, Kandiyohi and 21 more	54 min
May 30, 2:45 PM CDT	Mesoscale Discussion	SPC	Anoka, Benton, Carver, Chisago, Dakota, Dodge and 20 more	2 hr

Nearby

Mesoscale Discussions in North Dakota, 2004 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.