Alert archive / Illinois / Mesoscale Discussions in 2014

Mesoscale Discussion 1016

June 16, 201418 counties in Illinois; 5 counties in Iowa; 4 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Jun 16, 2014, 2:19 PM CDT for 18 counties in Illinois; 5 counties in Iowa; 4 counties in Missouri. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued: Jun 16, 2014, 2:19 PM CDT (19:19 UTC)
Expired: Jun 16, 2014, 3:45 PM CDT
In force: 86 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

All 27 counties

Davis County, IA, Jefferson County, IA, Lee County, IA, Van Buren County, IA, Wapello County, IA, Adams County, IL, Brown County, IL, Cass County, IL, Christian County, IL, Fulton County, IL, Hancock County, IL, Henderson County, IL, Logan County, IL, Macoupin County, IL, Mason County, IL, McDonough County, IL, Menard County, IL, Montgomery County, IL, Morgan County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Tazewell County, IL, Clark County, MO, Lewis County, MO, Schuyler County, MO, Scotland County, MO

The radar

The Lincoln radar (KILX), 132 km from the middle of the area, began a volume at 19:23 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.

Severe Thunderstorm Watch 304Jun 16, 3:35 PM CDT

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 7.3 hours before the alert went out and 160 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: 151 J/kg
Mixed-layer CIN: -111 J/kg
Mixed-layer LCL: 1163 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 150 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 16, 3:36 PM CDT	Severe Thunderstorm Watch	SPC	Carroll, Hancock, Henderson, Henry, Jo Daviess, McDonough and 4 more	5 hr
Jun 16, 7:12 AM CDT	Severe Thunderstorm Watch	SPC	Fremont, Harrison, Lyon, Mills, Monona, Plymouth and 4 more	9 hr
Jun 16, 10:19 AM CDT	Mesoscale Discussion	SPC	Adair, Adams, Appanoose, Audubon, Boone, Buena Vista and 64 more	116 min
Jun 16, 12:25 PM CDT	Tornado Watch	SPC	Audubon, Boone, Buena Vista, Calhoun, Carroll, Cherokee and 33 more	8 hr
Jun 16, 2:13 PM CDT	Mesoscale Discussion	SPC	Fremont, Mills	62 min
Jun 16, 3:07 PM CDT	Tornado Watch PDS	SPC	Harrison, Monona, Shelby	7 hr
Jun 16, 3:11 PM CDT	Mesoscale Discussion	SPC	Boone, Buena Vista, Calhoun, Carroll, Cherokee, Clay and 18 more	2 hr
Jun 16, 5:10 PM CDT	Mesoscale Discussion	SPC	Allamakee, Bremer, Chickasaw, Clayton, Fayette, Floyd and 3 more	35 min
Jun 16, 5:37 PM CDT	Tornado Watch	SPC	Audubon, Black Hawk, Boone, Bremer, Buena Vista, Butler and 38 more	6 hr
Jun 16, 5:46 PM CDT	Tornado Watch	SPC	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	6 hr

Nearby

Mesoscale Discussions in Illinois, 2014 Mesoscale Discussions in Iowa, 2014 Mesoscale Discussions in Missouri, 2014 Every mesoscale discussion in 2014

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.