Alert archive / Indiana / Mesoscale Discussions in 2003

Mesoscale Discussion 1666

July 6, 200327 counties in Indiana; Boone County, Campbell County, Kenton County, Kentucky; 8 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Jul 6, 2003, 11:51 PM EST for 27 counties in Indiana; Boone County, Campbell County, Kenton County, Kentucky; 8 counties in Ohio. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued
Jul 6, 2003, 11:51 PM EST (04:51 UTC)
Expired
Jul 7, 2003, 1:45 AM EST
In force
114 min
Issued by
the Storm Prediction Center
All 38 counties

Bartholomew County, IN, Boone County, IN, Brown County, IN, Clinton County, IN, Dearborn 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, Jennings County, IN, Johnson County, IN, Madison County, IN, Marion County, IN, Monroe County, IN, Morgan County, IN, Ohio County, IN, Randolph County, IN, Ripley County, IN, Rush County, IN, Shelby County, IN, Tipton County, IN, Union County, IN, Wayne County, IN, Boone County, KY, Campbell County, KY, Kenton County, KY, Butler County, OH, Clermont County, OH, Darke County, OH, Hamilton County, OH, Miami County, OH, Montgomery County, OH, Preble County, OH, Warren County, OH

The radar

The Indianapolis radar (KIND), 56 km from the middle of the area, began a volume at 04:53 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, 4.9 hours before the alert went out and 161 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 2003-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1162 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 2003-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 115 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
1162 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
1025 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
115 m²/s²
0-3 km storm-relative helicity
120 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.5

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 6, 8:46 PM ESTMesoscale DiscussionSPCAdams, Allen, Benton, Blackford, Carroll, Cass and 32 more59 min
Jul 6, 11:10 PM ESTSevere Thunderstorm WatchSPCBartholomew, Boone, Brown, Clinton, Dearborn, Decatur and 21 more3 hr
Jul 7, 8:30 AM ESTMesoscale DiscussionSPCAdams, Allen, Benton, Blackford, Boone, Carroll and 39 more60 min
Jul 7, 8:45 AM ESTSevere Thunderstorm WatchSPCAdams, Allen, Benton, Blackford, Carroll, Cass and 29 more4 hr
Jul 7, 10:14 AM ESTMesoscale DiscussionSPCAdams, Allen, Benton, Blackford, Boone, Carroll and 45 more61 min
Jul 7, 11:30 AM ESTSevere Thunderstorm WatchSPCFayette, Henry, Jay, Randolph, Rush, Union and 1 more6 hr
Jul 7, 12:14 PM ESTMesoscale DiscussionSPCAdams, Allen, Bartholomew, Blackford, Boone, Brown and 42 more61 min
Jul 7, 4:34 PM ESTMesoscale DiscussionSPCAllen, Benton, Blackford, Boone, Carroll, Cass and 44 more56 min
Jul 7, 5:30 PM ESTTornado WatchSPCAdams, Allen, Blackford, Carroll, Cass, Clinton and 28 more6 hr
Jul 7, 1:56 PM ESTMesoscale DiscussionSPCAshland, Belmont, Carroll, Champaign, Clark, Columbiana and 42 more94 min
Jul 7, 2:10 PM ESTSevere Thunderstorm WatchSPCAthens, Belmont, Carroll, Columbiana, Guernsey, Harrison and 12 more6 hr
Jul 7, 5:52 PM ESTMesoscale DiscussionSPCAthens, Belmont, Carroll, Columbiana, Gallia, Geauga and 15 more53 min

Nearby

Mesoscale Discussions in Indiana, 2003Mesoscale Discussions in Ohio, 2003Mesoscale Discussions in Kentucky, 2003Every mesoscale discussion in 2003

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.