Alert archive / Indiana / Mesoscale Discussions in 2015

Mesoscale Discussion 1595

August 3, 201523 counties in Indiana; 18 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Aug 3, 2015, 3:06 AM EDT for 23 counties in Indiana; 18 counties in Ohio. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Aug 3, 2015, 3:06 AM EDT (07:06 UTC)
Expired
Aug 3, 2015, 5:30 AM EDT
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
5%
All 41 counties

Bartholomew County, IN, Boone County, IN, Brown County, IN, Decatur County, IN, Delaware County, IN, Fayette County, IN, Franklin County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Johnson County, IN, Madison County, IN, Marion County, IN, Monroe County, IN, Morgan County, IN, Owen County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Shelby County, IN, Union County, IN, Wayne County, IN, Butler County, OH, Champaign County, OH, Clark County, OH, Clinton County, OH, Darke County, OH, Delaware County, OH, Fayette County, OH, Franklin County, OH, Greene County, OH, Logan County, OH, Madison County, OH, Miami County, OH, Montgomery County, OH, Pickaway County, OH, Preble County, OH, Shelby County, OH, Union County, OH, Warren County, OH

The radar

The Indianapolis radar (KIND), 103 km from the middle of the area, began a volume at 07:09 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 7.1 hours before the alert went out and 118 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, Cncnati-Daytn, OH at 00:00Z on 2015-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 167 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, Cncnati-Daytn, OH at 00:00Z on 2015-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
167 J/kg
Mixed-layer CIN
-128 J/kg
Mixed-layer LCL
1978 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Aug 2, 9:30 PM EDTSevere Thunderstorm WatchSPCAllen, Benton, DeKalb, Elkhart, Fulton, Jasper and 13 more5 hr
Aug 3, 12:19 AM EDTMesoscale DiscussionSPCAdams, Allen, Benton, Carroll, Cass, Fulton and 14 more86 min
Aug 3, 3:18 PM EDTMesoscale DiscussionSPCBlackford, Dearborn, Decatur, Delaware, Fayette, Franklin and 10 more117 min
Aug 3, 3:56 PM EDTSevere Thunderstorm WatchSPCDearborn, Fayette, Franklin, Ripley, Union, Wayne6 hr
Aug 3, 6:43 PM EDTMesoscale DiscussionSPCDearborn, Ohio, Switzerland92 min

Nearby

Mesoscale Discussions in Indiana, 2015Mesoscale Discussions in Ohio, 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.