Alert archive / Iowa / Mesoscale Discussions in 2019

Mesoscale Discussion 767

May 24, 201919 counties in Iowa; Doniphan County, Kansas; 13 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at May 24, 2019, 6:43 AM CDT for 19 counties in Iowa; Doniphan County, Kansas; 13 counties in Missouri. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 24, 2019, 6:43 AM CDT (11:43 UTC)
Expired
May 24, 2019, 8:45 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 33 counties

Adams County, IA, Appanoose County, IA, Clarke County, IA, Davis County, IA, Decatur County, IA, Fremont County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Monroe County, IA, Montgomery County, IA, Page County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA, Doniphan County, KS, Andrew County, MO, Atchison County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Mercer County, MO, Nodaway County, MO, Putnam County, MO, Sullivan County, MO, Worth County, MO

The radar

The Des Moines radar (KDMX), 151 km from the middle of the area, began a volume at 11:46 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 (KFOE), launched 00:00Z, 11.7 hours before the alert went out and 207 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, Topeka, KS at 00:00Z on 2019-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 290 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, Topeka, KS at 00:00Z on 2019-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 185 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
290 J/kg
Mixed-layer CIN
-125 J/kg
Mixed-layer LCL
800 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
185 m²/s²
0-3 km storm-relative helicity
247 m²/s²
Significant tornado parameter
0.2
Supercell composite
5.0

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, 4:05 AM CDTMesoscale DiscussionSPCAdams, Fremont, Mills, Montgomery, Page, Ringgold and 2 more115 min
May 24, 4:40 AM CDTSevere Thunderstorm WatchSPCAdams, Appanoose, Clarke, Davis, Decatur, Fremont and 13 more4 hr
May 24, 3:25 PM CDTMesoscale DiscussionSPCAppanoose, Benton, Black Hawk, Bremer, Buchanan, Cedar and 38 more65 min
May 24, 6:23 PM CDTTornado WatchSPCCedar, Clinton, Des Moines, Dubuque, Henry, Iowa and 12 more4 hr
May 23, 7:07 PM CDTMesoscale DiscussionSPCBarton, Clay, Cloud, Decatur, Ellis, Ellsworth and 31 more83 min
May 23, 7:42 PM CDTSevere Thunderstorm WatchSPCMarshall, Nemaha, Republic, Washington4 hr
May 23, 8:32 PM CDTMesoscale DiscussionSPCClark88 min
May 23, 9:53 PM CDTTornado WatchSPCBarber, Clark, Comanche, Kiowa, Pratt, Stafford4 hr
May 23, 11:33 PM CDTMesoscale DiscussionSPCAtchison, Barton, Brown, Clay, Cloud, Dickinson and 21 more87 min
May 24, 1:37 AM CDTTornado WatchSPCBarber, Barton, Brown, Clay, Cloud, Comanche and 33 more5 hr
May 24, 1:42 PM CDTMesoscale DiscussionSPCAllen, Anderson, Barber, Butler, Chase, Chautauqua and 25 more2 hr
May 24, 2:18 PM CDTTornado WatchSPCAllen, Anderson, Butler, Chase, Chautauqua, Coffey and 21 more8 hr
May 24, 6:04 PM CDTTornado WatchSPCBourbon, Crawford, Johnson, Leavenworth, Linn, Miami and 1 more5 hr
May 24, 12:15 PM CDTMesoscale DiscussionSPCPike90 min
May 24, 3:56 PM CDTMesoscale DiscussionSPCAdair, Andrew, Buchanan, Caldwell, Carroll, Chariton and 21 more94 min

Nearby

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