Alert archive / Minnesota / Mesoscale Discussions in 2017

Mesoscale Discussion 1352

July 19, 201711 counties in Minnesota

The Storm Prediction Center issued this mesoscale discussion at Jul 19, 2017, 2:46 PM CDT for 11 counties in Minnesota. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: Jul 19, 2017, 2:46 PM CDT (19:46 UTC)
Expired: Jul 19, 2017, 4:15 PM CDT
In force: 89 min
Issued by: the Storm Prediction Center

Counties Blue Earth County, MN, Brown County, MN, Cottonwood County, MN, Faribault County, MN, Freeborn County, MN, Le Sueur County, MN, Martin County, MN, Nicollet County, MN, Steele County, MN, Waseca County, MN, Watonwan County, MN

The radar

The Minneapolis radar (KMPX), 112 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

Minneapolis, MN (KMPX), launched 12:00Z, 7.8 hours before the alert went out and 111 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: 1964 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: -10 m²/s²
0-3 km storm-relative helicity: 91 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 19, 9:55 AM CDT	Mesoscale Discussion	SPC	Lincoln, Lyon, Pipestone, Yellow Medicine	2 hr
Jul 19, 9:59 AM CDT	Mesoscale Discussion	SPC	Kittson, Marshall, Pennington, Roseau	3 hr
Jul 19, 12:11 PM CDT	Mesoscale Discussion	SPC	Blue Earth, Brown, Cottonwood, Dodge, Faribault, Fillmore and 15 more	2 hr
Jul 19, 12:36 PM CDT	Severe Thunderstorm Watch	SPC	Blue Earth, Brown, Cottonwood, Faribault, Freeborn, Jackson and 17 more	5 hr
Jul 19, 1:13 PM CDT	Mesoscale Discussion	SPC	Blue Earth, Brown, Cottonwood, Jackson, Lincoln, Lyon and 5 more	92 min
Jul 19, 2:38 PM CDT	Mesoscale Discussion	SPC	Fillmore, Houston, Mower	2 hr
Jul 19, 3:29 PM CDT	Severe Thunderstorm Watch	SPC	Dodge, Fillmore, Houston, Mower, Olmsted, Wabasha and 1 more	6 hr
Jul 19, 6:32 PM CDT	Mesoscale Discussion	SPC	Fillmore, Houston, Mower	58 min

Nearby

Mesoscale Discussions in Minnesota, 2017 Every mesoscale discussion in 2017

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.