Alert archive / Indiana / Mesoscale Discussions in 2015

Mesoscale Discussion 933

June 7, 201519 counties in Illinois; 23 counties in Indiana; 7 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Jun 7, 2015, 9:52 PM CDT for 19 counties in Illinois; 23 counties in Indiana; 7 counties in Missouri. It was in force for 53 min.

The area

The outline as issued.

The facts

Issued
Jun 7, 2015, 9:52 PM CDT (02:52 UTC)
Expired
Jun 7, 2015, 10:45 PM CDT
In force
53 min
Issued by
the Storm Prediction Center
All 49 counties

Calhoun County, IL, Christian County, IL, Clark County, IL, Coles County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Greene County, IL, Jersey County, IL, Macon County, IL, Macoupin County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Piatt County, IL, Pike County, IL, Sangamon County, IL, Scott County, IL, Shelby County, IL, Boone County, IN, Clay County, IN, Clinton County, IN, Delaware County, IN, Fountain County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Johnson County, IN, Madison County, IN, Marion County, IN, Montgomery County, IN, Morgan County, IN, Owen County, IN, Parke County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Shelby County, IN, Tipton County, IN, Vermillion County, IN, Vigo County, IN, Audrain County, MO, Callaway County, MO, Lincoln County, MO, Monroe County, MO, Montgomery County, MO, Pike County, MO, Ralls County, MO

The radar

The Lincoln radar (KILX), 93 km from the middle of the area, began a volume at 02:51 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

Davenport, (KDVN), launched 00:00Z, 2.9 hours before the alert went out and 278 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, Davenport, at 00:00Z on 2015-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1647 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, Davenport, at 00:00Z on 2015-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.19395878Sfc1 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
1647 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1064 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.9

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.

IssuedProductOfficeCountiesLasted
Jun 7, 7:48 PM CDTSevere Thunderstorm WatchSPCAdams, Brown, Calhoun, Cass, Champaign, Christian and 33 more7 hr
Jun 8, 2:32 PM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, DeWitt, Fulton and 14 more118 min
Jun 8, 3:32 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 20 more88 min
Jun 7, 8:03 PM CDTMesoscale DiscussionSPCAdams, Allen, Blackford, Boone, Carroll, Cass and 28 more57 min
Jun 7, 11:02 PM CDTMesoscale DiscussionSPCBartholomew, Boone, Brown, Clay, Clinton, Delaware and 22 more88 min
Jun 7, 7:23 PM CDTSevere Thunderstorm WatchSPCAndrew, Bates, Buchanan, Caldwell, Carroll, Cass and 19 more7 hr
Jun 7, 9:38 PM CDTMesoscale DiscussionSPCBates, Benton, Boone, Carroll, Cass, Chariton and 12 more97 min
Jun 7, 11:29 PM CDTMesoscale DiscussionSPCBates, Cass, Cooper, Henry, Howard, Jackson and 5 more91 min
Jun 8, 12:08 PM CDTMesoscale DiscussionSPCButler, Dunklin, Mississippi, New Madrid, Pemiscot, Scott and 1 more97 min
Jun 8, 12:57 PM CDTSevere Thunderstorm WatchSPCDunklin, Mississippi, New Madrid, Pemiscot8 hr

Nearby

Mesoscale Discussions in Indiana, 2015Mesoscale Discussions in Illinois, 2015Mesoscale Discussions in Missouri, 2015Every mesoscale discussion in 2015

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.