Alert archive / Ohio / Mesoscale Discussions in 2006

Mesoscale Discussion 418

April 3, 20064 states

The Storm Prediction Center issued this mesoscale discussion at Apr 3, 2006, 10:24 AM EDT for 4 states. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued
Apr 3, 2006, 10:24 AM EDT (14:24 UTC)
Expired
Apr 3, 2006, 11:30 AM EDT
In force
66 min
Issued by
the Storm Prediction Center
Concerning
Severe thunderstorm potential
All 82 counties

Garrett County, MD, Ashland County, OH, Athens County, OH, Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Delaware County, OH, Fairfield County, OH, Franklin County, OH, Gallia County, OH, Guernsey County, OH, Harrison County, OH, Hocking County, OH, Holmes County, OH, Jackson County, OH, Jefferson County, OH, Knox County, OH, Licking County, OH, Madison County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Portage County, OH, Richland County, OH, Ross County, OH, Scioto County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Union County, OH, Vinton County, OH, Washington County, OH, Wayne County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Bedford County, PA, Blair County, PA, Butler County, PA, Cambria County, PA, Clarion County, PA, Clearfield County, PA, Elk County, PA, Fayette County, PA, Forest County, PA, Greene County, PA, Indiana County, PA, Jefferson County, PA, Lawrence County, PA, Mercer County, PA, Somerset County, PA, Venango County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Doddridge County, WV, Hancock County, WV, Harrison County, WV, Jackson County, WV, Marion County, WV, Marshall County, WV, Monongalia County, WV, Ohio County, WV, Pleasants County, WV, Preston County, WV, Ritchie County, WV, Taylor County, WV, Tyler County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV

The radar

The Pittsburgh radar (KPBZ), 50 km from the middle of the area, began a volume at 14:26 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, 2.4 hours before the alert went out and 48 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, Pittsburgh, PA at 12:00Z on 2006-04-03Temperature 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, Pittsburgh, PA at 12:00Z on 2006-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 166 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
1027 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
166 m²/s²
0-3 km storm-relative helicity
241 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
Apr 3, 2:14 PM EDTMesoscale DiscussionSPCAllegany, Garrett, Washington2 hr
Apr 3, 4:15 PM EDTTornado WatchSPCAllegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 14 more7 hr
Apr 2, 9:07 PM EDTSevere Thunderstorm WatchSPCAllen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more2 hr
Apr 2, 9:40 PM EDTTornado WatchSPCAdams, Auglaize, Brown, Butler, Champaign, Clark and 26 more6 hr
Apr 2, 10:27 PM EDTMesoscale DiscussionSPCAdams, Allen, Auglaize, Brown, Butler, Champaign and 45 more93 min
Apr 2, 11:44 PM EDTMesoscale DiscussionSPCAdams, Athens, Belmont, Fairfield, Fayette, Gallia and 16 more31 min
Apr 3, 12:01 AM EDTSevere Thunderstorm WatchSPCAthens, Gallia, Jackson, Lawrence, Meigs, Morgan and 3 more3 hr
Apr 3, 10:40 AM EDTTornado WatchSPCAshtabula, Athens, Belmont, Carroll, Columbiana, Coshocton and 28 more6 hr

Nearby

Mesoscale Discussions in Ohio, 2006Mesoscale Discussions in Pennsylvania, 2006Mesoscale Discussions in West Virginia, 2006Every mesoscale discussion in 2006

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.