Alert archive / North Dakota / Mesoscale Discussions in 2011

Mesoscale Discussion 244

March 22, 20115 counties in Minnesota; 20 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Mar 22, 2011, 10:39 AM CDT for 5 counties in Minnesota; 20 counties in North Dakota. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Mar 22, 2011, 10:39 AM CDT (15:39 UTC)
Expired: Mar 22, 2011, 4:45 PM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 25 counties

Beltrami County, MN, Clearwater County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Benson County, ND, Bottineau County, ND, Eddy County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, McHenry County, ND, McLean County, ND, Nelson County, ND, Pierce County, ND, Ramsey County, ND, Renville County, ND, Rolette County, ND, Sheridan County, ND, Steele County, ND, Towner County, ND, Traill County, ND, Walsh County, ND, Ward County, ND, Wells County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 89 km from the middle of the area, began a volume at 15:41 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

Bismarck Municip, ND (KBIS), launched 12:00Z, 3.7 hours before the alert went out and 222 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: 4 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 484 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 242 m²/s²
0-3 km storm-relative helicity: 201 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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
Mar 21, 10:05 PM CDT	Mesoscale Discussion	SPC	Cottonwood, Jackson, Lincoln, Martin, Murray, Nobles and 2 more	115 min
Mar 22, 2:25 PM CDT	Mesoscale Discussion	SPC	Big Stone, Douglas, Grant, Lac qui Parle, Otter Tail, Pope and 5 more	4 hr
Mar 22, 3:49 PM CDT	Mesoscale Discussion	SPC	Aitkin, Carlton, Cass, Chisago, Crow Wing, Isanti and 4 more	5 hr
Mar 22, 12:05 PM CDT	Mesoscale Discussion	SPC	Adams, Billings, Bowman, Burleigh, Foster, Hettinger and 7 more	5 hr

Nearby

Mesoscale Discussions in North Dakota, 2011 Mesoscale Discussions in Minnesota, 2011 Every mesoscale discussion in 2011

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.