Alert archive / Michigan / Mesoscale Discussions in 2016

Mesoscale Discussion 1314

July 18, 201613 counties in Indiana; 16 counties in Michigan; 12 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Jul 18, 2016, 1:51 AM EDT for 13 counties in Indiana; 16 counties in Michigan; 12 counties in Ohio. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued
Jul 18, 2016, 1:51 AM EDT (05:51 UTC)
Expired
Jul 18, 2016, 3:45 AM EDT
In force
114 min
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 41 counties

Allen County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Huntington County, IN, Kosciusko County, IN, LaGrange County, IN, Marshall County, IN, Noble County, IN, Saint Joseph County, IN, Steuben County, IN, Wabash County, IN, Whitley County, IN, Branch County, MI, Calhoun County, MI, Cass County, MI, Eaton County, MI, Hillsdale County, MI, Ingham County, MI, Jackson County, MI, Kalamazoo County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Monroe County, MI, Oakland County, MI, Saint Joseph County, MI, Washtenaw County, MI, Wayne County, MI, Defiance County, OH, Fulton County, OH, Hancock County, OH, Henry County, OH, Lucas County, OH, Ottawa County, OH, Paulding County, OH, Putnam County, OH, Sandusky County, OH, Van Wert County, OH, Williams County, OH, Wood County, OH

The radar

The Northern Indiana radar (KIWX), 114 km from the middle of the area, began a volume at 05:51 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

Detroit, MI (KDTX), launched 00:00Z, 5.9 hours before the alert went out and 139 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 00:00Z on 2016-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 546 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 00:00Z on 2016-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 228 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
546 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
1237 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
228 m²/s²
0-3 km storm-relative helicity
353 m²/s²
Significant tornado parameter
0.5
Supercell composite
6.8

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
Jul 17, 9:06 PM EDTMesoscale DiscussionSPCBenton, Jasper, Newton, Warren84 min
Jul 17, 10:02 PM EDTSevere Thunderstorm WatchSPCBenton, Cass, Fulton, Jasper, Lake, LaPorte and 7 more4 hr
Jul 17, 10:46 PM EDTMesoscale DiscussionSPCBenton, Jasper, Lake, LaPorte, Newton, Porter and 3 more89 min
Jul 18, 12:25 AM EDTMesoscale DiscussionSPCBenton, Carroll, Cass, Elkhart, Fulton, Jasper and 9 more95 min
Jul 18, 8:59 AM EDTMesoscale DiscussionSPCKnox91 min

Nearby

Mesoscale Discussions in Michigan, 2016Mesoscale Discussions in Indiana, 2016Mesoscale Discussions in Ohio, 2016Every mesoscale discussion in 2016

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.