Alert archive / Missouri / Mesoscale Discussions in 2019

Mesoscale Discussion 845

May 28, 20194 states

The Storm Prediction Center issued this mesoscale discussion at May 28, 2019, 1:23 AM CDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 28, 2019, 1:23 AM CDT (06:23 UTC)
Expired
May 28, 2019, 3:30 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
60%
All 49 counties

Adams County, IA, Appanoose County, IA, Clarke County, IA, Davis County, IA, Decatur County, IA, Des Moines County, IA, Henry County, IA, Jefferson County, IA, Lee County, IA, Louisa County, IA, Lucas County, IA, Monroe County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA, Van Buren County, IA, Wapello County, IA, Wayne County, IA, Hancock County, IL, Henderson County, IL, McDonough County, IL, Atchison County, KS, Doniphan County, KS, Adair County, MO, Andrew County, MO, Buchanan County, MO, Caldwell County, MO, Clark County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Knox County, MO, Lewis County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Nodaway County, MO, Platte County, MO, Putnam County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, Sullivan County, MO, Worth County, MO

The radar

The Des Moines radar (KDMX), 184 km from the middle of the area, began a volume at 06:23 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

Omaha, NE (KOAX), launched 00:00Z, 6.4 hours before the alert went out and 316 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-pSkew-T log-p diagram, Omaha, NE at 00:00Z on 2019-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 15 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 2019-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
15 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1326 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
170 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.4

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.

IssuedProductOfficeCountiesLasted
May 28, 11:16 AM CDTMesoscale DiscussionSPCChampaign, Ford, Iroquois, Kankakee, Livingston, Piatt and 1 more119 min
May 28, 11:31 AM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, DeWitt, Fulton and 17 more89 min
May 28, 12:01 PM CDTSevere Thunderstorm WatchSPCAdams, Brown, Cass, Champaign, Christian, DeWitt and 23 more5 hr
May 28, 3:58 PM CDTMesoscale DiscussionSPCAdams, Brown, Cass, Champaign, Christian, DeWitt and 19 more62 min
May 28, 5:22 PM CDTSevere Thunderstorm WatchSPCBureau, DeWitt, Fulton, Hancock, Henderson, Henry and 14 more5 hr
May 27, 10:55 PM CDTSevere Thunderstorm WatchSPCFremont, Harrison, Mills, Monona, Montgomery, Page and 2 more7 hr
May 27, 11:42 PM CDTMesoscale DiscussionSPCFremont, Mills, Montgomery, Page, Taylor63 min
May 28, 4:58 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Cass, Clarke, Dallas and 14 more2 hr
May 28, 6:09 AM CDTSevere Thunderstorm WatchSPCAdair, Adams, Appanoose, Cass, Clarke, Dallas and 17 more5 hr
May 28, 7:44 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Cass, Clarke, Dallas and 17 more2 hr
May 28, 9:42 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Cass, Clarke, Davis and 16 more93 min
May 28, 2:55 PM CDTMesoscale DiscussionSPCAppanoose, Clarke, Davis, Decatur, Jasper, Jefferson and 15 more95 min
May 28, 3:13 PM CDTSevere Thunderstorm WatchSPCAdams, Appanoose, Clarke, Davis, Decatur, Fremont and 15 more7 hr
May 28, 5:12 PM CDTMesoscale DiscussionSPCDecatur, Wayne93 min
May 27, 7:34 PM CDTMesoscale DiscussionSPCClay, Cloud, Ellis, Graham, Jewell, Lane and 13 more56 min
May 27, 8:02 PM CDTSevere Thunderstorm WatchSPCJewell, Mitchell, Osborne, Phillips, Rooks, Smith6 hr
May 28, 1:55 AM CDTSevere Thunderstorm WatchSPCDecatur, Norton, Rawlins4 hr
May 28, 9:39 AM CDTMesoscale DiscussionSPCBarber, Barton, Clay, Cloud, Comanche, Dickinson and 19 more96 min
May 28, 12:04 PM CDTMesoscale DiscussionSPCAnderson, Atchison, Brown, Chase, Coffey, Dickinson and 20 more86 min
May 28, 1:56 PM CDTTornado WatchSPCAnderson, Atchison, Clay, Cloud, Coffey, Dickinson and 21 more8 hr
May 28, 2:02 PM CDTMesoscale DiscussionSPCBarber, Barton, Butler, Chase, Cowley, Elk and 13 more88 min
May 28, 2:52 PM CDTTornado WatchSPCBarton, Butler, Chase, Chautauqua, Cowley, Elk and 14 more7 hr
May 28, 3:23 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Ellis, Gove, Graham, Greeley and 15 more3 hr
May 28, 4:03 PM CDTSevere Thunderstorm WatchSPCEllis, Gove, Graham, Greeley, Lane, Logan and 8 more5 hr
May 28, 5:33 PM CDTMesoscale DiscussionSPCButler, Chase, Clay, Cloud, Cowley, Dickinson and 13 more87 min
May 28, 5:38 PM CDTTornado WatchSPCJewell, Mitchell, Osborne, Phillips, Rooks, Smith3 hr
May 28, 6:26 PM CDTMesoscale DiscussionSPCClay, Cloud, Jewell, Mitchell, Republic, Washington94 min

Nearby

Mesoscale Discussions in Missouri, 2019Mesoscale Discussions in Iowa, 2019Mesoscale Discussions in Illinois, 2019Every 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.