Alert archive / Missouri / Mesoscale Discussions in 2013

Mesoscale Discussion 849

May 28, 20134 states

The Storm Prediction Center issued this mesoscale discussion at May 28, 2013, 9:20 PM CDT for 4 states. It was in force for 55 min.

The area

The outline as issued.

The facts

Issued: May 28, 2013, 9:20 PM CDT (02:20 UTC)
Expired: May 28, 2013, 10:15 PM CDT
In force: 55 min
Issued by: the Storm Prediction Center

All 50 counties

Adams County, IA, Appanoose County, IA, Clarke County, IA, Davis County, IA, Decatur County, IA, Fremont County, IA, Lucas County, IA, Mills County, IA, Monroe County, IA, Montgomery County, IA, Page County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA, Van Buren County, IA, Wayne County, IA, Atchison County, KS, Brown County, KS, Doniphan County, KS, Jackson County, KS, Jefferson County, KS, Marshall County, KS, Nemaha County, KS, Washington County, KS, Adair County, MO, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Knox County, MO, Mercer County, MO, Nodaway County, MO, Putnam County, MO, Schuyler County, MO, Scotland County, MO, Sullivan County, MO, Worth County, MO, Gage County, NE, Jefferson County, NE, Johnson County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE

The radar

The Pleasant Hill radar (KEAX), 162 km from the middle of the area, began a volume at 02:23 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

Topeka, KS (KTOP), launched 00:00Z, 2.3 hours before the alert went out and 156 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: 2641 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 764 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 158 m²/s²
0-3 km storm-relative helicity: 181 m²/s²
Significant tornado parameter: 2.0
Supercell composite: 14.2

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, 8:54 AM CDT	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 33 more	2 hr
May 29, 2:39 PM CDT	Mesoscale Discussion	SPC	Allamakee, Benton, Black Hawk, Bremer, Buchanan, Chickasaw and 19 more	66 min
May 29, 2:56 PM CDT	Severe Thunderstorm Watch	SPC	Allamakee, Appanoose, Benton, Black Hawk, Bremer, Buchanan and 29 more	7 hr
May 29, 3:33 PM CDT	Tornado Watch	SPC	Fremont, Mills	7 hr
May 29, 5:54 PM CDT	Mesoscale Discussion	SPC	Allamakee, Appanoose, Benton, Black Hawk, Bremer, Buchanan and 32 more	66 min
May 29, 6:24 PM CDT	Tornado Watch	SPC	Adams, Audubon, Buena Vista, Carroll, Cass, Cherokee and 20 more	4 hr
May 28, 7:36 PM CDT	Mesoscale Discussion	SPC	Barber, Clark, Comanche, Edwards, Finney, Ford and 13 more	114 min
May 28, 7:52 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Decatur, Ellis, Gove, Graham, Greeley and 14 more	113 min
May 29, 11:33 AM CDT	Mesoscale Discussion	SPC	Barber, Clark, Comanche	2 hr
May 29, 12:22 PM CDT	Tornado Watch	SPC	Barber, Barton, Clark, Comanche, Edwards, Ellis and 38 more	11 hr
May 29, 12:52 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Decatur, Graham, Norton, Phillips, Rawlins and 4 more	53 min
May 29, 1:04 PM CDT	Tornado Watch	SPC	Cheyenne, Decatur, Graham, Jewell, Mitchell, Norton and 8 more	9 hr
May 29, 3:00 PM CDT	Mesoscale Discussion	SPC	Barber, Barton, Clark, Comanche, Edwards, Ellis and 32 more	60 min
May 29, 3:12 PM CDT	Mesoscale Discussion	SPC	Butler, Chase, Clay, Cloud, Coffey, Cowley and 24 more	2 hr
May 29, 3:24 PM CDT	Mesoscale Discussion	SPC	Decatur, Graham, Jewell, Mitchell, Norton, Osborne and 6 more	66 min
May 29, 6:20 PM CDT	Mesoscale Discussion	SPC	Butler, Chase, Chautauqua, Coffey, Cowley, Elk and 4 more	85 min
May 29, 12:57 AM CDT	Severe Thunderstorm Watch	SPC	Blaine, Custer, Hooker, Lincoln, Logan, Loup and 2 more	3 hr
May 29, 5:18 PM CDT	Mesoscale Discussion	SPC	Burt, Cedar, Colfax, Cuming, Dakota, Dixon and 10 more	87 min

Nearby

Mesoscale Discussions in Missouri, 2013 Mesoscale Discussions in Iowa, 2013 Mesoscale Discussions in Kansas, 2013 Every mesoscale discussion in 2013

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.