Alert archive / Missouri / Mesoscale Discussions in 2020

Mesoscale Discussion 241

March 27, 2020Calhoun County, Illinois; 5 counties in Kansas; 36 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Mar 27, 2020, 8:33 PM CDT for Calhoun County, Illinois; 5 counties in Kansas; 36 counties in Missouri. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued
Mar 27, 2020, 8:33 PM CDT (01:33 UTC)
Expired
Mar 27, 2020, 10:00 PM CDT
In force
87 min
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 42 counties

Calhoun County, IL, Bourbon County, KS, Cherokee County, KS, Crawford County, KS, Linn County, KS, Miami County, KS, Audrain County, MO, Barton County, MO, Bates County, MO, Benton County, MO, Boone County, MO, Callaway County, MO, Camden County, MO, Cass County, MO, Cedar County, MO, Cole County, MO, Cooper County, MO, Dade County, MO, Gasconade County, MO, Henry County, MO, Hickory County, MO, Howard County, MO, Jasper County, MO, Johnson County, MO, Lafayette County, MO, Lincoln County, MO, Marion County, MO, Miller County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Morgan County, MO, Osage County, MO, Pettis County, MO, Pike County, MO, Ralls County, MO, Randolph County, MO, Saint Charles County, MO, Saline County, MO, St. Clair County, MO, Vernon County, MO, Warren County, MO

The radar

The Pleasant Hill radar (KEAX), 87 km from the middle of the area, began a volume at 01:36 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

Springfield, MO (KSGF), launched 00:00Z, 1.6 hours before the alert went out and 181 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, Springfield, MO at 00:00Z on 2020-03-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1120 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, Springfield, MO at 00:00Z on 2020-03-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 138 square meters per square second.1939587897117Sfc1 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
1120 J/kg
Mixed-layer CIN
-119 J/kg
Mixed-layer LCL
1066 m above ground
0-6 km bulk shear
74 kt
0-1 km storm-relative helicity
138 m²/s²
0-3 km storm-relative helicity
202 m²/s²
Significant tornado parameter
0.8
Supercell composite
3.8

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
Mar 27, 8:02 PM CDTMesoscale DiscussionSPCEdwards, Franklin, Hamilton, Jackson, Jefferson, Lawrence and 10 more88 min
Mar 27, 10:16 PM CDTSevere Thunderstorm WatchSPCBond, Calhoun, Christian, Effingham, Fayette, Greene and 9 more6 hr
Mar 27, 11:46 PM CDTMesoscale DiscussionSPCBond, Calhoun, Christian, Fayette, Greene, Jersey and 8 more89 min
Mar 28, 1:34 AM CDTMesoscale DiscussionSPCCarroll, Henry, Jo Daviess, Mercer, Rock Island, Whiteside56 min
Mar 28, 10:18 AM CDTMesoscale DiscussionSPCChampaign, Christian, DeWitt, Douglas, Ford, Iroquois and 8 more2 hr
Mar 28, 1:17 PM CDTMesoscale DiscussionSPCAlexander, Bond, Clark, Clay, Clinton, Crawford and 34 more88 min
Mar 28, 1:33 PM CDTMesoscale DiscussionSPCAdams, Hancock, Henderson117 min
Mar 28, 2:45 PM CDTTornado Watch PDSSPCAdams, Brown, Bureau, Calhoun, Cass, Champaign and 44 more6 hr
Mar 28, 3:53 PM CDTTornado WatchSPCAlexander, Bond, Clark, Clay, Clinton, Crawford and 30 more5 hr
Mar 28, 4:59 PM CDTMesoscale DiscussionSPCGallatin, Hamilton, Hardin, Johnson, Massac, Pope and 2 more61 min
Mar 28, 5:21 PM CDTMesoscale DiscussionSPCBrown, Fulton, Hancock, Henderson, Henry, Knox and 7 more84 min
Mar 28, 6:42 PM CDTMesoscale DiscussionSPCCarroll, Jo Daviess, Stephenson93 min
Mar 28, 7:05 AM CDTMesoscale DiscussionSPCAllen, Bourbon, Cherokee, Crawford, Labette, Linn and 1 more85 min
Mar 28, 2:10 PM CDTTornado WatchSPCDunklin, Pemiscot5 hr
Mar 28, 2:56 PM CDTMesoscale DiscussionSPCDunklin, Pemiscot94 min
Mar 28, 6:34 PM CDTTornado WatchSPCDunklin, Pemiscot7 hr

Nearby

Mesoscale Discussions in Missouri, 2020Mesoscale Discussions in Kansas, 2020Mesoscale Discussions in Illinois, 2020Every mesoscale discussion in 2020

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.