Alert archive / Indiana / Mesoscale Discussions in 2013

Mesoscale Discussion 2018

November 17, 20139 counties in Illinois; 65 counties in Indiana; 27 counties in Michigan

The Storm Prediction Center issued this mesoscale discussion at Nov 17, 2013, 1:13 PM CST for 9 counties in Illinois; 65 counties in Indiana; 27 counties in Michigan. It was in force for 77 min.

The area

The outline as issued.

The facts

Issued
Nov 17, 2013, 1:13 PM CST (19:13 UTC)
Expired
Nov 17, 2013, 2:30 PM CST
In force
77 min
Issued by
the Storm Prediction Center
All 101 counties

Clark County, IL, Crawford County, IL, Edgar County, IL, Edwards County, IL, Jasper County, IL, Lawrence County, IL, Richland County, IL, Vermilion County, IL, Wabash County, IL, Allen County, IN, Bartholomew County, IN, Benton County, IN, Blackford County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Cass County, IN, Clay County, IN, Clinton County, IN, Daviess County, IN, DeKalb County, IN, Delaware County, IN, Dubois County, IN, Elkhart County, IN, Fountain County, IN, Fulton County, IN, Gibson County, IN, Grant County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Huntington County, IN, Jasper County, IN, Johnson County, IN, Knox County, IN, Kosciusko County, IN, LaGrange County, IN, LaPorte County, IN, Lawrence County, IN, Madison 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, Noble County, IN, Orange County, IN, Owen County, IN, Parke County, IN, Pike County, IN, Porter County, IN, Pulaski County, IN, Putnam County, IN, Rush County, IN, Saint Joseph County, IN, Shelby County, IN, Starke County, IN, Steuben County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Vigo County, IN, Wabash County, IN, Warren 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, Clare County, MI, Clinton County, MI, Eaton County, MI, Gladwin County, MI, Gratiot County, MI, Ionia County, MI, Isabella County, MI, Kalamazoo County, MI, Kent County, MI, Lake County, MI, Mecosta County, MI, Midland County, MI, Missaukee County, MI, Montcalm County, MI, Newaygo County, MI, Osceola County, MI, Ottawa County, MI, Roscommon County, MI, Saint Joseph County, MI, Van Buren County, MI, Wexford County, MI

The radar

The Northern Indiana radar (KIWX), 66 km from the middle of the area, began a volume at 19:13 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, 7.2 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, Lincoln, IL at 12:00Z on 2013-11-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1021 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, Lincoln, IL at 12:00Z on 2013-11-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 398 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
1021 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
506 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
398 m²/s²
0-3 km storm-relative helicity
396 m²/s²
Significant tornado parameter
2.7
Supercell composite
11.0

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
Nov 16, 11:29 PM CSTMesoscale DiscussionSPCAlexander, Jackson, Johnson, Pulaski, Union, Williamson61 min
Nov 17, 2:06 AM CSTMesoscale DiscussionSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 14 more84 min
Nov 17, 7:47 AM CSTMesoscale DiscussionSPCAdams, Bond, Brown, Bureau, Calhoun, Carroll and 55 more88 min
Nov 17, 8:40 AM CSTTornado Watch PDSSPCAdams, Bond, Boone, Brown, Bureau, Calhoun and 77 more7 hr
Nov 17, 10:17 AM CSTMesoscale DiscussionSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more118 min
Nov 17, 10:43 AM CSTTornado WatchSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more8 hr
Nov 17, 10:49 AM CSTMesoscale DiscussionSPCBond, Boone, Bureau, Calhoun, Cass, Champaign and 56 more86 min
Nov 17, 11:57 AM CSTMesoscale DiscussionSPCChampaign, Coles, Cook, DeWitt, Douglas, DuPage and 11 more93 min
Nov 17, 11:57 AM CSTMesoscale DiscussionSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more93 min
Nov 17, 1:05 PM CSTMesoscale DiscussionSPCAlexander, Hamilton, Johnson, Massac, Pope, Pulaski and 4 more55 min
Nov 17, 2:43 PM CSTMesoscale DiscussionSPCAlexander, Edwards, Gallatin, Hamilton, Hardin, Johnson and 8 more62 min
Nov 17, 10:01 AM CSTMesoscale DiscussionSPCAdams, Allen, Bartholomew, Benton, Blackford, Boone and 56 more119 min
Nov 17, 10:20 AM CSTTornado Watch PDSSPCAdams, Allen, Bartholomew, Blackford, Boone, Brown and 65 more9 hr
Nov 17, 1:34 PM CSTMesoscale DiscussionSPCClark, Crawford, Floyd, Harrison, Perry, Washington56 min
Nov 17, 1:58 PM CSTTornado WatchSPCClark, Crawford, Dubois, Floyd, Harrison, Jefferson and 4 more6 hr
Nov 17, 2:51 PM CSTMesoscale DiscussionSPCAdams, Allen, Bartholomew, Blackford, Brown, Clay and 34 more84 min
Nov 17, 3:46 PM CSTMesoscale DiscussionSPCClark, Crawford, Dubois, Floyd, Harrison, Orange and 7 more89 min
Nov 17, 11:32 AM CSTMesoscale DiscussionSPCAlcona, Alpena, Antrim, Benzie, Cheboygan, Crawford and 13 more118 min
Nov 17, 12:13 PM CSTTornado WatchSPCAlcona, Alpena, Antrim, Arenac, Benzie, Charlevoix and 17 more6 hr

Nearby

Mesoscale Discussions in Indiana, 2013Mesoscale Discussions in Michigan, 2013Mesoscale Discussions in Illinois, 2013Every mesoscale discussion in 2013

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.