Alert archive / Minnesota / Mesoscale Discussions in 2017

Mesoscale Discussion 728

May 16, 20174 states

The Storm Prediction Center issued this mesoscale discussion at May 16, 2017, 2:13 AM CDT for 4 states. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued: May 16, 2017, 2:13 AM CDT (07:13 UTC)
Expired: May 16, 2017, 3:45 AM CDT
In force: 92 min
Issued by: the Storm Prediction Center

All 58 counties

Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Dickinson County, IA, Emmet County, IA, Hancock County, IA, Howard County, IA, Kossuth County, IA, Lyon County, IA, Mitchell County, IA, O'Brien County, IA, Osceola County, IA, Palo Alto County, IA, Plymouth County, IA, Sioux County, IA, Winnebago County, IA, Winneshiek County, IA, Worth County, IA, Blue Earth County, MN, Brown County, MN, Cottonwood County, MN, Dodge County, MN, Faribault County, MN, Fillmore County, MN, Freeborn County, MN, Goodhue County, MN, Houston County, MN, Jackson County, MN, Le Sueur County, MN, Martin County, MN, Mower County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Olmsted County, MN, Pipestone County, MN, Redwood County, MN, Rice County, MN, Rock County, MN, Scott County, MN, Sibley County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Watonwan County, MN, Winona County, MN, Clay County, SD, Hutchinson County, SD, Lincoln County, SD, McCook County, SD, Minnehaha County, SD, Moody County, SD, Turner County, SD, Union County, SD, Yankton County, SD, Buffalo County, WI, La Crosse County, WI, Trempealeau County, WI

The radar

The Sioux Falls radar (KFSD), 113 km from the middle of the area, began a volume at 07:15 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 00:00Z, 7.2 hours before the alert went out and 208 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: 1282 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 111 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
May 15, 7:19 PM CDT	Mesoscale Discussion	SPC	Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 26 more	56 min
May 15, 8:50 PM CDT	Mesoscale Discussion	SPC	Clay, Dickinson, Emmet, Kossuth, Mitchell, Osceola and 3 more	115 min
May 15, 9:48 PM CDT	Severe Thunderstorm Watch	SPC	Allamakee, Howard, Mitchell, Winneshiek	5 hr
May 15, 11:54 PM CDT	Severe Thunderstorm Watch	SPC	Cherokee, Clay, Dickinson, Lyon, O'Brien, Osceola and 3 more	3 hr
May 16, 3:58 PM CDT	Mesoscale Discussion	SPC	Adams, Audubon, Buena Vista, Calhoun, Carroll, Cass and 23 more	2 hr
May 16, 4:57 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Adams, Audubon, Buena Vista, Calhoun, Carroll and 23 more	7 hr
May 16, 3:32 PM CDT	Mesoscale Discussion	SPC	Anoka, Blue Earth, Brown, Carver, Chisago, Dakota and 28 more	88 min
May 16, 4:08 PM CDT	Severe Thunderstorm Watch	SPC	Anoka, Blue Earth, Brown, Carver, Chisago, Dakota and 16 more	4 hr
May 15, 7:34 PM CDT	Mesoscale Discussion	SPC	Butte, Custer, Fall River, Harding, Lawrence, Meade and 3 more	56 min
May 15, 10:53 PM CDT	Mesoscale Discussion	SPC	Butte, Custer, Fall River, Harding, Lawrence, Meade and 3 more	67 min
May 15, 7:52 PM CDT	Severe Thunderstorm Watch	SPC	Dane, Green, Iowa, Jefferson, Kenosha, Lafayette and 3 more	3 hr
May 15, 10:14 PM CDT	Mesoscale Discussion	SPC	Jefferson, Kenosha, Rock, Walworth, Waukesha	61 min
May 16, 12:57 PM CDT	Mesoscale Discussion	SPC	Buffalo, Clark, Eau Claire, Jackson, Marathon, Menominee and 7 more	2 hr
May 16, 4:02 PM CDT	Tornado Watch	SPC	Ashland, Barron, Bayfield, Buffalo, Burnett, Chippewa and 24 more	6 hr
May 16, 6:25 PM CDT	Mesoscale Discussion	SPC	Ashland, Barron, Bayfield, Brown, Buffalo, Burnett and 32 more	65 min

Nearby

Mesoscale Discussions in Minnesota, 2017 Mesoscale Discussions in Iowa, 2017 Mesoscale Discussions in South Dakota, 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.