Alert archive / Ohio / Mesoscale Discussions in 2005

Mesoscale Discussion 1880

July 26, 20054 states

The Storm Prediction Center issued this mesoscale discussion at Jul 26, 2005, 2:00 PM EDT for 4 states. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued: Jul 26, 2005, 2:00 PM EDT (18:00 UTC)
Expired: Jul 26, 2005, 3:30 PM EDT
In force: 90 min
Issued by: the Storm Prediction Center

All 40 counties

Allegany County, NY, Cattaraugus County, NY, Erie County, NY, Genesee County, NY, Livingston County, NY, Monroe County, NY, Ontario County, NY, Orleans County, NY, Wayne County, NY, Wyoming County, NY, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Guernsey County, OH, Harrison County, OH, Holmes County, OH, Jefferson County, OH, Knox County, OH, Licking County, OH, Mahoning County, OH, Morrow County, OH, Muskingum County, OH, Stark County, OH, Tuscarawas County, OH, Wayne County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Clarion County, PA, Elk County, PA, Forest County, PA, Jefferson County, PA, Lawrence County, PA, McKean County, PA, Mercer County, PA, Venango County, PA, Warren County, PA, Brooke County, WV, Hancock County, WV

The radar

The Pittsburgh radar (KPBZ), 124 km from the middle of the area, began a volume at 18:03 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

Pittsburgh, PA (KPIT), launched 12:00Z, 6.0 hours before the alert went out and 134 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: 845 J/kg
Mixed-layer CIN: -142 J/kg
Mixed-layer LCL: 717 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 63 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

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
Jul 26, 2:58 PM EDT	Mesoscale Discussion	SPC	Allegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston and 5 more	62 min
Jul 26, 3:30 PM EDT	Severe Thunderstorm Watch	SPC	Allegany, Cattaraugus, Chautauqua, Erie, Genesee, Orleans and 1 more	8 hr
Jul 26, 5:45 PM EDT	Severe Thunderstorm Watch	SPC	Broome, Cayuga, Chemung, Chenango, Cortland, Jefferson and 15 more	4 hr
Jul 25, 9:10 PM EDT	Mesoscale Discussion	SPC	Adams, Allen, Auglaize, Brown, Champaign, Clark and 15 more	65 min
Jul 26, 11:31 AM EDT	Mesoscale Discussion	SPC	Defiance, Fulton, Henry, Lucas, Paulding, Putnam and 3 more	89 min
Jul 26, 12:00 PM EDT	Severe Thunderstorm Watch	SPC	Defiance, Fulton, Henry, Lucas, Ottawa, Paulding and 4 more	7 hr
Jul 26, 5:59 PM EDT	Mesoscale Discussion	SPC	Defiance, Fulton, Henry, Lucas, Paulding, Van Wert and 2 more	61 min
Jul 26, 6:40 PM EDT	Severe Thunderstorm Watch	SPC	Allen, Auglaize, Crawford, Darke, Defiance, Fulton and 19 more	6 hr
Jul 26, 7:16 PM EDT	Mesoscale Discussion	SPC	Adams, Bedford, Berks, Blair, Cambria, Carbon and 26 more	89 min

Nearby

Mesoscale Discussions in Ohio, 2005 Mesoscale Discussions in Pennsylvania, 2005 Mesoscale Discussions in New York, 2005 Every mesoscale discussion in 2005

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.