Alert archive / Indiana / Mesoscale Discussions in 2023

Mesoscale Discussion 413

March 31, 20234 states

The Storm Prediction Center issued this mesoscale discussion at Mar 31, 2023, 6:20 PM CDT for 4 states. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued
Mar 31, 2023, 6:20 PM CDT (23:20 UTC)
Expired
Mar 31, 2023, 8:15 PM CDT
In force
115 min
Issued by
the Storm Prediction Center
Concerning
Tornado watch 96
All 110 counties

Champaign County, IL, Clark County, IL, Coles County, IL, Cook County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, DuPage County, IL, Edgar County, IL, Edwards County, IL, Ford County, IL, Gallatin County, IL, Grundy County, IL, Hardin County, IL, Iroquois County, IL, Jasper County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Lake County, IL, Lawrence County, IL, Livingston County, IL, Richland County, IL, Vermilion County, IL, Wabash County, IL, White County, IL, Will County, IL, Bartholomew County, IN, Benton County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Cass County, IN, Clay County, IN, Clinton County, IN, Crawford County, IN, Daviess County, IN, Dubois County, IN, Floyd County, IN, Fountain County, IN, Fulton County, IN, Gibson County, IN, Greene County, IN, Hamilton County, IN, Harrison County, IN, Hendricks County, IN, Howard County, IN, Jackson County, IN, Jasper County, IN, Johnson County, IN, Knox County, IN, Lake County, IN, LaPorte County, IN, Lawrence County, IN, Marion County, IN, Marshall County, IN, Martin County, IN, Miami County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Newton County, IN, Orange County, IN, Owen County, IN, Parke County, IN, Perry County, IN, Pike County, IN, Porter County, IN, Posey County, IN, Pulaski County, IN, Putnam County, IN, Saint Joseph County, IN, Shelby County, IN, Spencer County, IN, Starke County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Vanderburgh County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN, Warrick County, IN, Washington County, IN, White County, IN, Breckinridge County, KY, Butler County, KY, Caldwell County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Edmonson County, KY, Grayson County, KY, Hancock County, KY, Hardin County, KY, Henderson County, KY, Hopkins County, KY, Logan County, KY, Lyon County, KY, McLean County, KY, Meade County, KY, Muhlenberg County, KY, Ohio County, KY, Simpson County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Warren County, KY, Webster County, KY, Berrien County, MI

The radar

The Indianapolis radar (KIND), 96 km from the middle of the area, began a volume at 23:20 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

Lincoln, IL (KILX), launched 12:00Z, 11.3 hours before the alert went out and 116 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 2023-03-31Temperature 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 2023-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 646 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1009 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
646 m²/s²
0-3 km storm-relative helicity
712 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 31, 8:36 AM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Greene, Hancock, Jersey and 8 more84 min
Mar 31, 10:37 AM CDTMesoscale DiscussionSPCAdams, Brown, Cass, Fulton, Hancock, Henderson and 10 more53 min
Mar 31, 11:24 AM CDTMesoscale DiscussionSPCAdams, Brown, Bureau, Calhoun, Carroll, Cass and 27 more96 min
Mar 31, 11:46 AM CDTTornado Watch PDSSPCAdams, Brown, Bureau, Calhoun, Carroll, Cass and 36 more8 hr
Mar 31, 12:28 PM CDTTornado Watch PDSSPCAlexander, Bond, Clinton, Fayette, Franklin, Jackson and 14 more11 hr
Mar 31, 12:53 PM CDTMesoscale DiscussionSPCAlexander, Clinton, Franklin, Jackson, Jefferson, Johnson and 10 more97 min
Mar 31, 1:32 PM CDTMesoscale DiscussionSPCAdams, Brown, Fulton, Hancock, Knox, McDonough and 5 more118 min
Mar 31, 2:07 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 26 more83 min
Mar 31, 2:36 PM CDTTornado WatchSPCBoone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more7 hr
Mar 31, 3:17 PM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, Fulton, Greene and 20 more88 min
Mar 31, 3:50 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 21 more55 min
Mar 31, 5:18 PM CDTMesoscale DiscussionSPCAdams, Brown, Bureau, Calhoun, Carroll, Cass and 27 more117 min
Mar 31, 5:30 PM CDTMesoscale DiscussionSPCAdams, Brown, Bureau, Calhoun, Carroll, Cass and 27 more2 hr
Mar 31, 6:59 PM CDTTornado WatchSPCChampaign, Christian, Clark, Clay, Coles, Crawford and 21 more7 hr
Mar 31, 3:42 PM CDTMesoscale DiscussionSPCCalloway, Fulton, Graves, Trigg93 min
Mar 30, 10:04 PM CDTMesoscale DiscussionSPCDelta, Dickinson, Gogebic, Iron, Menominee26 min

Nearby

Mesoscale Discussions in Indiana, 2023Mesoscale Discussions in Illinois, 2023Mesoscale Discussions in Kentucky, 2023Every mesoscale discussion in 2023

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.