Alert archive / Indiana / Mesoscale Discussions in 2003

Mesoscale Discussion 2414

September 26, 20034 states

The Storm Prediction Center issued this mesoscale discussion at Sep 26, 2003, 7:56 PM CDT for 4 states. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued: Sep 26, 2003, 7:56 PM CDT (00:56 UTC)
Expired: Sep 26, 2003, 9:30 PM CDT
In force: 94 min
Issued by: the Storm Prediction Center

All 79 counties

Lawrence County, IL, Wabash County, IL, Adams County, IN, Bartholomew County, IN, Blackford County, IN, Brown County, IN, Clay County, IN, Crawford County, IN, Daviess County, IN, Dearborn County, IN, Decatur County, IN, Delaware County, IN, Dubois County, IN, Fayette County, IN, Franklin County, IN, Gibson County, IN, Grant County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Jackson County, IN, Jay County, IN, Jefferson County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Martin County, IN, Monroe County, IN, Morgan County, IN, Ohio County, IN, Orange County, IN, Owen County, IN, Pike County, IN, Putnam County, IN, Randolph County, IN, Ripley County, IN, Rush County, IN, Scott County, IN, Shelby County, IN, Spencer County, IN, Sullivan County, IN, Switzerland County, IN, Tipton County, IN, Union County, IN, Vanderburgh County, IN, Warrick County, IN, Washington County, IN, Wayne County, IN, Wells County, IN, Boone County, KY, Henderson County, KY, Allen County, OH, Auglaize County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clinton County, OH, Darke County, OH, Fayette County, OH, Greene County, OH, Hamilton County, OH, Hancock County, OH, Hardin County, OH, Logan County, OH, Madison County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Paulding County, OH, Preble County, OH, Putnam County, OH, Shelby County, OH, Van Wert County, OH, Warren County, OH

The radar

The Indianapolis radar (KIND), 24 km from the middle of the area, began a volume at 00:59 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.9 hours before the alert went out and 199 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 780 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 699 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 368 m²/s²
0-3 km storm-relative helicity: 432 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.5

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.

Issued	Product	Office	Counties	Lasted
Sep 26, 8:20 PM CDT	Tornado Watch	SPC	Clark, Crawford, Edwards, Lawrence, Wabash	6 hr
Sep 26, 9:21 PM CDT	Mesoscale Discussion	SPC	Edwards, Franklin, Gallatin, Hamilton, Hardin, Jackson and 12 more	54 min
Sep 26, 11:06 PM CDT	Mesoscale Discussion	SPC	Clark, Crawford, Lawrence	84 min
Sep 26, 11:40 PM CDT	Tornado Watch	SPC	Anderson, Bath, Boone, Bourbon, Bracken, Bullitt and 35 more	5 hr
Sep 27, 2:12 AM CDT	Mesoscale Discussion	SPC	Adair, Allen, Barren, Butler, Calloway, Casey and 21 more	93 min
Sep 27, 2:37 AM CDT	Mesoscale Discussion	SPC	Anderson, Bath, Bourbon, Bracken, Bullitt, Campbell and 36 more	113 min
Sep 27, 4:15 AM CDT	Mesoscale Discussion	SPC	Bath, Bourbon, Carter, Clark, Elliott, Estill and 18 more	60 min
Sep 27, 10:42 AM CDT	Mesoscale Discussion	SPC	Bell, Harlan, Knox, Leslie, Letcher	108 min

Nearby

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