Alert archive / Indiana / Mesoscale Discussions in 2017

Mesoscale Discussion 1030

June 14, 20175 states

The Storm Prediction Center issued this mesoscale discussion at Jun 14, 2017, 3:02 PM CDT for 5 states. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued
Jun 14, 2017, 3:02 PM CDT (20:02 UTC)
Expired
Jun 14, 2017, 5:00 PM CDT
In force
118 min
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 56 counties

Cook County, IL, Lake County, IL, Allen County, IN, Benton County, IN, Carroll County, IN, Cass County, IN, Clinton County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Grant County, IN, Howard County, IN, Huntington County, IN, Jasper County, IN, Kosciusko County, IN, LaGrange County, IN, Lake County, IN, LaPorte County, IN, Marshall County, IN, Miami County, IN, Newton County, IN, Noble County, IN, Porter County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Tippecanoe County, IN, Tipton County, IN, Wabash County, IN, Wells County, IN, White County, IN, Whitley County, IN, Allegan County, MI, Barry County, MI, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Clinton County, MI, Eaton County, MI, Hillsdale County, MI, Ingham County, MI, Ionia County, MI, Jackson County, MI, Kalamazoo County, MI, Kent County, MI, Montcalm County, MI, Muskegon County, MI, Newaygo County, MI, Ottawa County, MI, Saint Joseph County, MI, Van Buren County, MI, Defiance County, OH, Williams County, OH, Racine County, WI

The radar

The Northern Indiana radar (KIWX), 66 km from the middle of the area, began a volume at 20:04 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 8.0 hours before the alert went out and 213 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, Detroit, MI at 12:00Z on 2017-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 93 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, Detroit, MI at 12:00Z on 2017-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 square meters per square second.1939Sfc1 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
93 J/kg
Mixed-layer CIN
-225 J/kg
Mixed-layer LCL
988 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
102 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
Jun 14, 12:06 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 27 more2 hr
Jun 14, 12:40 PM CDTMesoscale DiscussionSPCBond, Calhoun, Christian, Clay, Clinton, Effingham and 23 more3 hr
Jun 14, 12:40 PM CDTSevere Thunderstorm WatchSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 35 more7 hr
Jun 14, 12:44 PM CDTMesoscale DiscussionSPCChampaign, Clark, Coles, DeWitt, Douglas, Edgar and 5 more3 hr
Jun 14, 1:04 PM CDTSevere Thunderstorm WatchSPCAdams, Bond, Brown, Calhoun, Cass, Champaign and 35 more9 hr
Jun 14, 4:59 PM CDTMesoscale DiscussionSPCCook, DuPage, Grundy, Iroquois, Kane, Kankakee and 4 more91 min
Jun 14, 6:11 PM CDTMesoscale DiscussionSPCAdams, Bond, Brown, Calhoun, Cass, Christian and 22 more64 min
Jun 14, 3:32 PM CDTSevere Thunderstorm WatchSPCCass, Elkhart, Fulton, Kosciusko, LaPorte, Marshall and 6 more4 hr
Jun 14, 5:31 PM CDTMesoscale DiscussionSPCBoone, Brown, Clinton, Hamilton, Hancock, Hendricks and 8 more59 min
Jun 14, 1:20 PM CDTMesoscale DiscussionSPCAshland, Athens, Belmont, Carroll, Columbiana, Coshocton and 30 more2 hr

Nearby

Mesoscale Discussions in Indiana, 2017Mesoscale Discussions in Michigan, 2017Mesoscale Discussions in Illinois, 2017Every mesoscale discussion in 2017

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.