Alert archive / Ohio / Mesoscale Discussions in 2003

Mesoscale Discussion 996

May 15, 200330 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at May 15, 2003, 1:19 PM EDT for 30 counties in Ohio. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued: May 15, 2003, 1:19 PM EDT (17:19 UTC)
Expired: May 15, 2003, 2:45 PM EDT
In force: 86 min
Issued by: the Storm Prediction Center

All 30 counties

Ashland County, OH, Auglaize County, OH, Carroll County, OH, Champaign County, OH, Columbiana County, OH, Coshocton County, OH, Crawford County, OH, Darke County, OH, Delaware County, OH, Geauga County, OH, Hardin County, OH, Holmes County, OH, Huron County, OH, Knox County, OH, Logan County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Miami County, OH, Morrow County, OH, Portage County, OH, Richland County, OH, Shelby County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Union County, OH, Wayne County, OH, Wyandot County, OH

The radar

The Cleveland radar (KCLE), 101 km from the middle of the area, began a volume at 17:20 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 12:00Z, 5.3 hours before the alert went out and 175 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1264 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 171 m²/s²
0-3 km storm-relative helicity: 225 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.

Issued	Product	Office	Counties	Lasted
May 15, 11:15 AM EDT	Severe Thunderstorm Watch	SPC	Adams, Brown, Butler, Clermont, Clinton, Fairfield and 12 more	6 hr
May 15, 3:20 PM EDT	Mesoscale Discussion	SPC	Adams, Brown, Clermont, Clinton, Fayette, Franklin and 11 more	85 min

Nearby

Mesoscale Discussions in Ohio, 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.