Alert archive / Ohio / Mesoscale Discussions in 2004

Mesoscale Discussion 1166

June 9, 200419 counties in Ohio; 7 counties in Pennsylvania; Hancock County, West Virginia

The Storm Prediction Center issued this mesoscale discussion at Jun 9, 2004, 8:12 PM EDT for 19 counties in Ohio; 7 counties in Pennsylvania; Hancock County, West Virginia. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued: Jun 9, 2004, 8:12 PM EDT (00:12 UTC)
Expired: Jun 9, 2004, 9:15 PM EDT
In force: 63 min
Issued by: the Storm Prediction Center

All 27 counties

Ashland County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Guernsey County, OH, Harrison County, OH, Holmes County, OH, Jefferson County, OH, Knox County, OH, Mahoning County, OH, Morrow County, OH, Muskingum County, OH, Portage County, OH, Richland County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Wayne County, OH, Beaver County, PA, Butler County, PA, Clarion County, PA, Jefferson County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Hancock County, WV

The radar

The Pittsburgh radar (KPBZ), 72 km from the middle of the area, began a volume at 00:15 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 00:00Z, 0.2 hours before the alert went out and 283 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: 696 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 1424 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 54 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
Jun 10, 1:31 PM EDT	Mesoscale Discussion	SPC	Adams, Bedford, Berks, Blair, Bucks, Cambria and 25 more	119 min
Jun 10, 2:55 PM EDT	Severe Thunderstorm Watch	SPC	Bucks, Chester, Delaware, Lancaster, Lebanon, Montgomery and 2 more	5 hr
Jun 10, 4:56 PM EDT	Mesoscale Discussion	SPC	Bucks, Chester, Delaware, Lancaster, Montgomery, Philadelphia and 1 more	94 min

Nearby

Mesoscale Discussions in Ohio, 2004 Mesoscale Discussions in Pennsylvania, 2004 Mesoscale Discussions in West Virginia, 2004 Every mesoscale discussion in 2004

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.