Alert archive / Ohio / Mesoscale Discussions in 2013

Mesoscale Discussion 1667

August 8, 20134 states

The Storm Prediction Center issued this mesoscale discussion at Aug 8, 2013, 3:45 PM EDT for 4 states. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued: Aug 8, 2013, 3:45 PM EDT (19:45 UTC)
Expired: Aug 8, 2013, 5:15 PM EDT
In force: 90 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

All 84 counties

Bartholomew County, IN, Brown County, IN, Clay County, IN, Decatur County, IN, Fayette County, IN, Franklin County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Johnson County, IN, Marion County, IN, Monroe County, IN, Morgan County, IN, Owen County, IN, Parke County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Shelby County, IN, Sullivan County, IN, Union County, IN, Vigo County, IN, Wayne County, IN, Allegany County, NY, Cattaraugus County, NY, Chautauqua County, NY, Genesee County, NY, Livingston County, NY, Ontario County, NY, Schuyler County, NY, Seneca County, NY, Steuben County, NY, Wayne County, NY, Wyoming County, NY, Yates County, NY, Ashland County, OH, Butler County, OH, Carroll County, OH, Champaign County, OH, Clark County, OH, Columbiana County, OH, Coshocton County, OH, Darke County, OH, Delaware County, OH, Fayette County, OH, Franklin County, OH, Geauga County, OH, Greene County, OH, Holmes County, OH, Knox County, OH, Licking County, OH, Logan County, OH, Madison County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Miami County, OH, Montgomery County, OH, Morrow County, OH, Portage County, OH, Preble County, OH, Richland County, OH, Shelby County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Union County, OH, Warren County, OH, Wayne County, OH, Beaver County, PA, Butler County, PA, Clarion County, PA, Crawford County, PA, Elk County, PA, Forest County, PA, Lawrence County, PA, McKean County, PA, Mercer County, PA, Potter County, PA, Venango County, PA, Warren County, PA

The radar

The Cleveland radar (KCLE), 87 km from the middle of the area, began a volume at 19:47 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

Pittsburgh, PA (KAGC), launched 12:00Z, 7.8 hours before the alert went out and 183 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: 1200 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 531 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 84 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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Nearby

Mesoscale Discussions in Ohio, 2013 Mesoscale Discussions in Indiana, 2013 Mesoscale Discussions in New York, 2013 Every mesoscale discussion in 2013

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.