Alert archive / Ohio / Mesoscale Discussions in 2003

Mesoscale Discussion 2416

September 26, 20036 states

The Storm Prediction Center issued this mesoscale discussion at Sep 26, 2003, 11:06 PM CDT for 6 states. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued
Sep 26, 2003, 11:06 PM CDT (04:06 UTC)
Expired
Sep 27, 2003, 12:30 AM CDT
In force
84 min
Issued by
the Storm Prediction Center
All 151 counties

Clark County, IL, Crawford County, IL, Lawrence County, IL, Bartholomew County, IN, Blackford County, IN, Boone County, IN, Brown County, IN, Clark 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, Floyd County, IN, Franklin County, IN, Gibson County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Harrison 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, Parke County, IN, Perry 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, Union County, IN, Vanderburgh County, IN, Vigo County, IN, Warrick County, IN, Washington County, IN, Wayne County, IN, Boone County, KY, Campbell County, KY, Carroll County, KY, Gallatin County, KY, Grant County, KY, Henderson County, KY, Henry County, KY, Kenton County, KY, Oldham County, KY, Owen County, KY, Pendleton County, KY, Trimble County, KY, Allen County, OH, Ashland County, OH, Athens County, OH, Auglaize County, OH, Belmont County, OH, Brown County, OH, Butler County, OH, Carroll County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Columbiana County, OH, Coshocton County, OH, Crawford County, OH, Cuyahoga County, OH, Darke County, OH, Delaware County, OH, Erie County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Geauga County, OH, Greene County, OH, Guernsey County, OH, Hamilton County, OH, Hancock County, OH, Hardin County, OH, Harrison County, OH, Highland County, OH, Hocking County, OH, Holmes County, OH, Huron County, OH, Jefferson County, OH, Knox County, OH, Licking County, OH, Logan County, OH, Lorain County, OH, Madison County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Mercer County, OH, Miami County, OH, Monroe County, OH, Montgomery County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Portage County, OH, Preble County, OH, Richland County, OH, Ross County, OH, Seneca County, OH, Shelby County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Union County, OH, Vinton County, OH, Warren County, OH, Wayne County, OH, Wyandot County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Crawford County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Washington County, PA, Brooke County, WV, Hancock County, WV, Marshall County, WV, Ohio County, WV

The radar

The Cincinnati radar (KILN), 42 km from the middle of the area, began a volume at 04:07 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, 4.1 hours before the alert went out and 41 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 2003-09-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 780 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 2003-09-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 368 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
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.

IssuedProductOfficeCountiesLasted
Sep 26, 7:56 PM CDTMesoscale DiscussionSPCLawrence, Wabash94 min
Sep 26, 8:20 PM CDTTornado WatchSPCClark, Crawford, Edwards, Lawrence, Wabash6 hr
Sep 26, 9:21 PM CDTMesoscale DiscussionSPCEdwards, Franklin, Gallatin, Hamilton, Hardin, Jackson and 12 more54 min
Sep 26, 11:40 PM CDTTornado WatchSPCAnderson, Bath, Boone, Bourbon, Bracken, Bullitt and 35 more5 hr
Sep 27, 2:12 AM CDTMesoscale DiscussionSPCAdair, Allen, Barren, Butler, Calloway, Casey and 21 more93 min
Sep 27, 2:37 AM CDTMesoscale DiscussionSPCAnderson, Bath, Bourbon, Bracken, Bullitt, Campbell and 36 more113 min
Sep 27, 4:15 AM CDTMesoscale DiscussionSPCBath, Bourbon, Carter, Clark, Elliott, Estill and 18 more60 min
Sep 27, 10:42 AM CDTMesoscale DiscussionSPCBell, Harlan, Knox, Leslie, Letcher108 min
Sep 27, 1:35 AM CDTTornado WatchSPCErie5 hr
Sep 27, 1:22 PM CDTMesoscale DiscussionSPCAdams, Bedford, Bradford, Centre, Clinton, Columbia and 16 more113 min
Sep 27, 3:05 PM CDTSevere Thunderstorm WatchSPCBedford, Blair, Cambria, Cameron, Centre, Clearfield and 11 more5 hr
Sep 27, 5:52 PM CDTMesoscale DiscussionSPCBedford, Blair, Centre, Clinton, Franklin, Fulton and 5 more53 min
Sep 27, 1:41 PM CDTMesoscale DiscussionSPCMonroe2 hr

Nearby

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