Alert archive / North Dakota / Mesoscale Discussions in 2019

Mesoscale Discussion 1601

July 28, 20197 counties in Minnesota; 12 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 28, 2019, 2:45 PM CDT for 7 counties in Minnesota; 12 counties in North Dakota. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jul 28, 2019, 2:45 PM CDT (19:45 UTC)
Expired: Jul 28, 2019, 4:45 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center
Chance of a watch: 20%

Counties Kittson County, MN, Lake of the Woods County, MN, Marshall County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Barnes County, ND, Cass County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, LaMoure County, ND, Logan County, ND, Nelson County, ND, Steele County, ND, Stutsman County, ND, Traill County, ND, Walsh County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 69 km from the middle of the area, began a volume at 19:47 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 nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 7.8 hours before the alert went out and 312 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: 333 J/kg
Mixed-layer CIN: -150 J/kg
Mixed-layer LCL: 1403 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 28, 2:03 PM CDT	Mesoscale Discussion	SPC	Goodhue, Olmsted, Ramsey, Wabasha, Washington, Winona	117 min
Jul 28, 2:51 PM CDT	Tornado Watch	SPC	Anoka, Blue Earth, Carver, Chisago, Dakota, Dodge and 18 more	6 hr
Jul 28, 5:10 PM CDT	Mesoscale Discussion	SPC	Anoka, Carver, Chisago, Dakota, Dodge, Goodhue and 11 more	95 min
Jul 28, 4:46 PM CDT	Mesoscale Discussion	SPC	Sargent	59 min

Nearby

Mesoscale Discussions in North Dakota, 2019 Mesoscale Discussions in Minnesota, 2019 Every mesoscale discussion in 2019

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.