Alert archive / Illinois / Mesoscale Discussions in 2022

Mesoscale Discussion 352

March 30, 202230 counties in Illinois; 4 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Mar 30, 2022, 9:03 AM CDT for 30 counties in Illinois; 4 counties in Missouri. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued
Mar 30, 2022, 9:03 AM CDT (14:03 UTC)
Expired
Mar 30, 2022, 11:00 AM CDT
In force
117 min
Issued by
the Storm Prediction Center
Concerning
Severe potential...watch unlikely
Chance of a watch
20%
All 34 counties

Bond County, IL, Champaign County, IL, Christian County, IL, Clinton County, IL, Coles County, IL, DeWitt County, IL, Douglas County, IL, Effingham County, IL, Fayette County, IL, Ford County, IL, Greene County, IL, Iroquois County, IL, Jersey County, IL, Livingston County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, McLean County, IL, Monroe County, IL, Montgomery County, IL, Moultrie County, IL, Perry County, IL, Piatt County, IL, Randolph County, IL, Saint Clair County, IL, Sangamon County, IL, Shelby County, IL, Washington County, IL, City of Saint Louis, MO, Jefferson County, MO, Saint Charles County, MO, Saint Louis County, MO

The radar

The St Louis radar (KLSX), 110 km from the middle of the area, began a volume at 14:04 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

Lincoln, IL (KILX), launched 12:00Z, 2.1 hours before the alert went out and 140 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, Lincoln, IL at 12:00Z on 2022-03-30Temperature 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, Lincoln, IL at 12:00Z on 2022-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 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
997 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
136 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
Mar 30, 9:44 AM CDTMesoscale DiscussionSPCAlexander, Franklin, Jackson, Monroe, Perry, Randolph and 1 more2 hr
Mar 30, 12:41 PM CDTMesoscale DiscussionSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 15 more2 hr
Mar 30, 2:44 PM CDTTornado WatchSPCAlexander, Clay, Edwards, Franklin, Gallatin, Hamilton and 16 more6 hr
Mar 30, 5:32 PM CDTMesoscale DiscussionSPCClay, Crawford, Edwards, Franklin, Gallatin, Hamilton and 12 more88 min
Mar 30, 6:09 PM CDTSevere Thunderstorm WatchSPCClark, Crawford, Cumberland, Jasper5 hr
Mar 29, 7:50 PM CDTMesoscale DiscussionSPCAndrew, Atchison, Buchanan, Cass, Clay, Clinton and 7 more85 min
Mar 29, 10:25 PM CDTMesoscale DiscussionSPCBarton, Jasper, Newton, Vernon95 min
Mar 30, 5:30 AM CDTTornado WatchSPCChristian, Douglas, Howell, Oregon, Ozark, Shannon and 4 more8 hr
Mar 30, 12:16 PM CDTTornado WatchSPCDunklin, Pemiscot9 hr
Mar 30, 2:16 PM CDTMesoscale DiscussionSPCDunklin, Pemiscot119 min

Nearby

Mesoscale Discussions in Illinois, 2022Mesoscale Discussions in Missouri, 2022Every mesoscale discussion in 2022

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.