Alert archive / Indiana / Mesoscale Discussions in 2010

Mesoscale Discussion 1313

July 15, 201012 counties in Illinois; 23 counties in Indiana

The Storm Prediction Center issued this mesoscale discussion at Jul 15, 2010, 11:32 AM CDT for 12 counties in Illinois; 23 counties in Indiana. It was in force for 58 min.

The area

The outline as issued.

The facts

Issued
Jul 15, 2010, 11:32 AM CDT (16:32 UTC)
Expired
Jul 15, 2010, 12:30 PM CDT
In force
58 min
Issued by
the Storm Prediction Center
All 35 counties

Champaign County, IL, Coles County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Fayette County, IL, Montgomery County, IL, Moultrie County, IL, Piatt County, IL, Shelby County, IL, Vermilion County, IL, Benton County, IN, Carroll County, IN, Cass County, IN, Clinton County, IN, Fountain County, IN, Fulton County, IN, Jasper County, IN, Kosciusko County, IN, LaPorte County, IN, Marshall County, IN, Miami County, IN, Montgomery County, IN, Newton County, IN, Noble County, IN, Parke County, IN, Pulaski County, IN, Starke County, IN, Tippecanoe County, IN, Vermillion County, IN, Wabash County, IN, Warren County, IN, White County, IN, Whitley County, IN

The radar

The Lincoln radar (KILX), 107 km from the middle of the area, began a volume at 16:31 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, 4.5 hours before the alert went out and 46 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 2010-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3622 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 2010-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 square meters per square second.193958Sfc1 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
3622 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
811 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
31 m²/s²
Significant tornado parameter
0.8
Supercell composite
4.9

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
Jul 14, 9:25 PM CDTMesoscale DiscussionSPCMcHenry95 min
Jul 15, 11:57 AM CDTSevere Thunderstorm WatchSPCChampaign, Christian, Clark, Coles, Cumberland, DeWitt and 19 more8 hr
Jul 15, 2:47 PM CDTMesoscale DiscussionSPCChampaign, Christian, Coles, DeWitt, Douglas, Edgar and 11 more118 min
Jul 15, 4:48 PM CDTMesoscale DiscussionSPCAlexander, Bond, Clay, Clinton, Effingham, Fayette and 14 more87 min
Jul 15, 5:56 PM CDTMesoscale DiscussionSPCChampaign, Clark, Coles, Cumberland, Douglas, Edgar and 5 more94 min

Nearby

Mesoscale Discussions in Indiana, 2010Mesoscale Discussions in Illinois, 2010Every mesoscale discussion in 2010

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.