Alert archive / Indiana / Mesoscale Discussions in 2003

Mesoscale Discussion 1711

July 8, 200323 counties in Indiana; 15 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Jul 8, 2003, 2:30 PM EST for 23 counties in Indiana; 15 counties in Ohio. It was in force for 30 min.

The area

The outline as issued.

The facts

Issued
Jul 8, 2003, 2:30 PM EST (19:30 UTC)
Expired
Jul 8, 2003, 3:00 PM EST
In force
30 min
Issued by
the Storm Prediction Center
All 38 counties

Adams County, IN, Allen County, IN, Cass County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Huntington County, IN, Jasper County, IN, Kosciusko County, IN, Lake County, IN, LaPorte County, IN, Marshall County, IN, Miami County, IN, Newton County, IN, Noble County, IN, Porter County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Wabash County, IN, Wells County, IN, White County, IN, Whitley County, IN, Allen County, OH, Crawford County, OH, Defiance County, OH, Fulton County, OH, Hancock County, OH, Henry County, OH, Ottawa County, OH, Paulding County, OH, Putnam County, OH, Sandusky County, OH, Seneca County, OH, Van Wert County, OH, Williams County, OH, Wood County, OH, Wyandot County, OH

The radar

The Northern Indiana radar (KIWX), 10 km from the middle of the area, began a volume at 19:32 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

Detroit, MI (KDTX), launched 12:00Z, 7.5 hours before the alert went out and 245 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 12:00Z on 2003-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 318 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 12:00Z on 2003-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 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
318 J/kg
Mixed-layer CIN
-174 J/kg
Mixed-layer LCL
953 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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 7, 7:40 PM ESTSevere Thunderstorm WatchSPCJasper, Lake, Newton, Porter3 hr
Jul 7, 9:13 PM ESTMesoscale DiscussionSPCAdams, Allen, Blackford, Boone, Carroll, Cass and 30 more62 min
Jul 7, 10:18 PM ESTMesoscale DiscussionSPCBenton, Jasper, Lake, Newton, Porter, White57 min
Jul 7, 11:00 PM ESTSevere Thunderstorm WatchSPCAdams, Allen, Benton, Blackford, Boone, Carroll and 39 more5 hr
Jul 7, 11:50 PM ESTMesoscale DiscussionSPCAdams, Allen, Benton, Blackford, Boone, Carroll and 36 more85 min
Jul 8, 10:05 AM ESTMesoscale DiscussionSPCAdams, Allen, Benton, Blackford, Boone, Carroll and 43 more25 min
Jul 8, 10:25 AM ESTSevere Thunderstorm WatchSPCAdams, Allen, Cass, DeKalb, Elkhart, Fulton and 19 more6 hr
Jul 8, 12:04 PM ESTMesoscale DiscussionSPCAdams, Allen, Cass, DeKalb, Elkhart, Fulton and 19 more56 min
Jul 8, 12:25 PM ESTMesoscale DiscussionSPCBartholomew, Brown, Clark, Clay, Crawford, Daviess and 42 more95 min
Jul 8, 1:25 PM ESTSevere Thunderstorm WatchSPCBartholomew, Benton, Blackford, Boone, Brown, Carroll and 54 more6 hr
Jul 8, 3:02 PM ESTMesoscale DiscussionSPCBartholomew, Benton, Blackford, Boone, Brown, Carroll and 54 more88 min
Jul 8, 3:20 PM ESTSevere Thunderstorm WatchSPCAdams, Allen, DeKalb, Elkhart, Fulton, Huntington and 17 more4 hr
Jul 8, 5:38 PM ESTMesoscale DiscussionSPCAdams, Allen, Bartholomew, Benton, Blackford, Boone and 67 more37 min
Jul 8, 6:40 PM ESTSevere Thunderstorm WatchSPCBartholomew, Benton, Blackford, Boone, Brown, Carroll and 50 more5 hr
Jul 7, 8:30 PM ESTMesoscale DiscussionSPCAdams, Ashland, Athens, Carroll, Coshocton, Crawford and 36 more60 min
Jul 7, 8:55 PM ESTSevere Thunderstorm WatchSPCAshland, Ashtabula, Athens, Belmont, Carroll, Columbiana and 50 more3 hr
Jul 7, 11:57 PM ESTMesoscale DiscussionSPCAshland, Athens, Belmont, Carroll, Columbiana, Coshocton and 49 more63 min
Jul 8, 1:57 AM ESTMesoscale DiscussionSPCAshland, Athens, Belmont, Carroll, Champaign, Clark and 44 more63 min
Jul 8, 2:20 AM ESTSevere Thunderstorm WatchSPCAshland, Athens, Belmont, Carroll, Champaign, Clark and 51 more6 hr
Jul 8, 5:06 AM ESTMesoscale DiscussionSPCAthens, Belmont, Carroll, Columbiana, Coshocton, Cuyahoga and 21 more114 min
Jul 8, 2:02 PM ESTMesoscale DiscussionSPCAshland, Ashtabula, Athens, Belmont, Carroll, Columbiana and 36 more28 min
Jul 8, 2:15 PM ESTSevere Thunderstorm WatchSPCAshland, Ashtabula, Athens, Belmont, Carroll, Columbiana and 35 more5 hr
Jul 8, 4:05 PM ESTMesoscale DiscussionSPCAshland, Athens, Belmont, Carroll, Columbiana, Coshocton and 34 more115 min

Nearby

Mesoscale Discussions in Indiana, 2003Mesoscale Discussions in Ohio, 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.