Alert archive / Ohio / Mesoscale Discussions in 2003

Mesoscale Discussion 770

May 5, 2003Ohio County, Indiana; 18 counties in Kentucky; 30 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at May 5, 2003, 5:42 PM EDT for Ohio County, Indiana; 18 counties in Kentucky; 30 counties in Ohio. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
May 5, 2003, 5:42 PM EDT (21:42 UTC)
Expired
May 5, 2003, 8:15 PM EDT
In force
3 hr
Issued by
the Storm Prediction Center
All 49 counties

Ohio County, IN, Boone County, KY, Boyd County, KY, Bracken County, KY, Campbell County, KY, Carter County, KY, Fleming County, KY, Gallatin County, KY, Grant County, KY, Greenup County, KY, Harrison County, KY, Kenton County, KY, Lewis County, KY, Mason County, KY, Nicholas County, KY, Owen County, KY, Pendleton County, KY, Robertson County, KY, Rowan County, KY, Adams County, OH, Athens County, OH, Brown County, OH, Butler County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Gallia County, OH, Greene County, OH, Hamilton County, OH, Highland County, OH, Hocking County, OH, Jackson County, OH, Lawrence County, OH, Licking County, OH, Madison County, OH, Meigs County, OH, Montgomery County, OH, Morgan County, OH, Muskingum County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Ross County, OH, Scioto County, OH, Vinton County, OH, Warren County, OH

The radar

The Cincinnati radar (KILN), 55 km from the middle of the area, began a volume at 21:43 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 12:00Z, 9.7 hours before the alert went out and 54 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 12:00Z on 2003-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2003-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 706 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
522 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
706 m²/s²
0-3 km storm-relative helicity
1070 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
May 4, 9:05 PM EDTMesoscale DiscussionSPCPosey85 min
May 4, 10:26 PM EDTMesoscale DiscussionSPCPosey2 hr
May 4, 11:40 PM EDTTornado WatchSPCGibson, Pike, Posey, Spencer, Vanderburgh, Warrick5 hr
May 5, 12:37 AM EDTMesoscale DiscussionSPCClark, Crawford, Dubois, Floyd, Harrison, Jefferson and 5 more23 min
May 5, 12:45 AM EDTTornado WatchSPCClark, Crawford, Floyd, Harrison, Orange, Perry and 1 more5 hr
May 5, 2:30 AM EDTMesoscale DiscussionSPCGibson, Pike, Posey, Spencer, Vanderburgh, Warrick90 min
May 5, 2:46 AM EDTMesoscale DiscussionSPCBartholomew, Boone, Brown, Clay, Clinton, Crawford and 34 more89 min
May 5, 3:31 AM EDTMesoscale DiscussionSPCCrawford, Floyd, Harrison89 min
May 5, 4:41 AM EDTMesoscale DiscussionSPCGibson, Posey, Spencer, Vanderburgh, Warrick34 min
May 5, 4:50 AM EDTTornado WatchSPCGibson, Posey, Spencer, Vanderburgh, Warrick6 hr
May 5, 7:32 AM EDTMesoscale DiscussionSPCGibson, Posey, Spencer, Vanderburgh, Warrick88 min
May 5, 8:35 AM EDTTornado WatchSPCHarrison, Perry5 hr
May 5, 10:19 AM EDTMesoscale DiscussionSPCGibson, Posey, Spencer, Vanderburgh, Warrick56 min
May 5, 11:12 AM EDTMesoscale DiscussionSPCHarrison, Perry93 min
May 5, 12:59 PM EDTMesoscale DiscussionSPCHarrison, Perry61 min
May 5, 1:20 PM EDTTornado WatchSPCClark, Crawford, Dubois, Floyd, Gibson, Harrison and 6 more7 hr
May 5, 3:47 PM EDTMesoscale DiscussionSPCCrawford, Dubois, Floyd, Gibson, Harrison, Perry and 4 more118 min
May 5, 5:27 PM EDTMesoscale DiscussionSPCSteuben3 hr
May 5, 7:33 PM EDTMesoscale DiscussionSPCClark, Crawford, Dubois, Floyd, Gibson, Harrison and 6 more57 min
May 4, 8:34 PM EDTMesoscale DiscussionSPCBallard, Caldwell, Calloway, Carlisle, Christian, Fulton and 7 more116 min
May 5, 2:20 AM EDTTornado WatchSPCBallard, Caldwell, Calloway, Carlisle, Christian, Fulton and 7 more6 hr
May 5, 5:18 AM EDTMesoscale DiscussionSPCAllen, Ballard, Barren, Butler, Caldwell, Calloway and 19 more57 min
May 5, 5:55 AM EDTTornado WatchSPCFulton6 hr
May 5, 10:35 AM EDTTornado WatchSPCCalloway, Fulton5 hr
May 5, 12:06 PM EDTMesoscale DiscussionSPCFulton114 min
May 5, 3:13 PM EDTMesoscale DiscussionSPCFulton62 min
May 5, 3:35 PM EDTTornado WatchSPCFulton7 hr
May 5, 6:15 PM EDTTornado WatchSPCBracken, Campbell, Grant, Greenup, Kenton, Lewis and 4 more5 hr
May 5, 7:47 PM EDTMesoscale DiscussionSPCBath, Bourbon, Boyd, Bracken, Campbell, Carter and 15 more88 min

Nearby

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