Alert archive / Missouri / Mesoscale Discussions in 2019

Mesoscale Discussion 791

May 25, 20194 states

The Storm Prediction Center issued this mesoscale discussion at May 25, 2019, 3:24 PM CDT for 4 states. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
May 25, 2019, 3:24 PM CDT (20:24 UTC)
Expired
May 25, 2019, 6:00 PM CDT
In force
3 hr
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 72 counties

Appanoose County, IA, Davis County, IA, Des Moines County, IA, Henry County, IA, Jefferson County, IA, Lee County, IA, Van Buren County, IA, Wayne County, IA, Adams County, IL, Brown County, IL, Calhoun County, IL, Cass County, IL, Fulton County, IL, Greene County, IL, Hancock County, IL, Henderson County, IL, Mason County, IL, McDonough County, IL, Morgan County, IL, Pike County, IL, Schuyler County, IL, Scott County, IL, Warren County, IL, Johnson County, KS, Leavenworth County, KS, Wyandotte County, KS, Adair County, MO, Andrew County, MO, Audrain County, MO, Boone County, MO, Buchanan County, MO, Caldwell County, MO, Callaway County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clark County, MO, Clay County, MO, Clinton County, MO, Cooper County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Knox County, MO, Lafayette County, MO, Lewis County, MO, Lincoln County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Marion County, MO, Mercer County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Pettis County, MO, Pike County, MO, Platte County, MO, Putnam County, MO, Ralls County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, Sullivan County, MO

The radar

The St Louis radar (KLSX), 186 km from the middle of the area, began a volume at 20:26 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 8.4 hours before the alert went out and 241 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, Davenport, at 12:00Z on 2019-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Davenport, at 12:00Z on 2019-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 116 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
885 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
116 m²/s²
0-3 km storm-relative helicity
-83 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.

IssuedProductOfficeCountiesLasted
May 24, 8:57 PM CDTMesoscale DiscussionSPCBureau, Carroll, DeKalb, DeWitt, Fulton, Hancock and 25 more2 hr
May 25, 6:48 PM CDTMesoscale DiscussionSPCAdams, Brown, Cass, Fulton, Hancock, Henderson and 11 more57 min
May 24, 7:00 PM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Buchanan, Chickasaw, Clayton and 5 more2 hr
May 24, 7:49 PM CDTTornado WatchSPCAllamakee, Clayton, Fayette, Winneshiek3 hr
May 24, 9:17 PM CDTMesoscale DiscussionSPCAllamakee, Clayton, Fayette, Winneshiek118 min
May 25, 5:23 PM CDTSevere Thunderstorm WatchSPCAdams, Appanoose, Clarke, Davis, Decatur, Lucas and 7 more6 hr
May 24, 7:56 PM CDTMesoscale DiscussionSPCChautauqua, Labette, Montgomery, Wilson64 min
May 24, 8:30 PM CDTMesoscale DiscussionSPCBourbon, Linn2 hr
May 24, 9:16 PM CDTMesoscale DiscussionSPCBourbon, Cherokee, Crawford, Labette29 min
May 25, 2:46 PM CDTMesoscale DiscussionSPCBarber, Barton, Clark, Comanche, Edwards, Ellis and 25 more2 hr
May 25, 3:03 PM CDTSevere Thunderstorm WatchSPCEdwards, Ellis, Finney, Ford, Gove, Graham and 23 more6 hr
May 25, 3:06 PM CDTMesoscale DiscussionSPCClark, Comanche, Meade, Seward, Stevens114 min
May 25, 3:24 PM CDTTornado WatchSPCBarber, Clark, Comanche, Meade, Seward7 hr
May 25, 5:56 PM CDTMesoscale DiscussionSPCBarber, Clark, Comanche, Harper, Kingman, Kiowa and 3 more2 hr
May 25, 6:19 PM CDTSevere Thunderstorm WatchSPCBarton, Butler, Chase, Cowley, Ellsworth, Harper and 11 more7 hr
May 25, 6:49 PM CDTMesoscale DiscussionSPCEdwards, Ellis, Finney, Ford, Gove, Graham and 21 more116 min

Nearby

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