Alert archive / Indiana / Mesoscale Discussions in 2020

Mesoscale Discussion 514

May 2, 20209 counties in Illinois; 20 counties in Indiana

The Storm Prediction Center issued this mesoscale discussion at May 2, 2020, 11:10 PM CDT for 9 counties in Illinois; 20 counties in Indiana. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued: May 2, 2020, 11:10 PM CDT (04:10 UTC)
Expired: May 3, 2020, 12:45 AM CDT
In force: 95 min
Issued by: the Storm Prediction Center
Chance of a watch: 5%

All 29 counties

Clark County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Jasper County, IL, Moultrie County, IL, Shelby County, IL, Bartholomew County, IN, Brown County, IN, Clay County, IN, Decatur County, IN, Franklin County, IN, Greene County, IN, Jackson County, IN, Jennings County, IN, Johnson County, IN, Lawrence County, IN, Monroe County, IN, Morgan County, IN, Owen County, IN, Parke County, IN, Putnam County, IN, Ripley County, IN, Shelby County, IN, Sullivan County, IN, Vermillion County, IN, Vigo County, IN

The radar

The Indianapolis radar (KIND), 104 km from the middle of the area, began a volume at 04:10 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 00:00Z, 4.2 hours before the alert went out and 151 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2551 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 86 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.

Issued	Product	Office	Counties	Lasted
May 2, 8:27 PM CDT	Mesoscale Discussion	SPC	Adams, Brown, Cass, Champaign, Christian, Clark and 21 more	2 hr
May 3, 11:44 AM CDT	Severe Thunderstorm Watch	SPC	Alexander, Hardin, Johnson, Massac, Pope, Pulaski and 1 more	7 hr
May 3, 12:50 PM CDT	Mesoscale Discussion	SPC	Alexander, Massac, Pulaski	85 min

Nearby

Mesoscale Discussions in Indiana, 2020 Mesoscale Discussions in Illinois, 2020 Every 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.