Alert archive / West Virginia / Mesoscale Discussions in 2008

Mesoscale Discussion 1306

June 10, 20084 states

The Storm Prediction Center issued this mesoscale discussion at Jun 10, 2008, 1:25 PM EDT for 4 states. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued
Jun 10, 2008, 1:25 PM EDT (17:25 UTC)
Expired
Jun 10, 2008, 3:00 PM EDT
In force
95 min
Issued by
the Storm Prediction Center
All 76 counties

Garrett County, MD, Belmont County, OH, Carroll County, OH, Columbiana County, OH, Guernsey County, OH, Harrison County, OH, Jefferson County, OH, Mahoning County, OH, Meigs County, OH, Monroe County, OH, Noble County, OH, Washington County, OH, Allegheny County, PA, Armstrong County, PA, Beaver 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, McKean County, PA, Mercer County, PA, Somerset County, PA, Venango County, PA, Warren County, PA, Washington County, PA, Westmoreland County, PA, Barbour County, WV, Boone County, WV, Braxton County, WV, Brooke County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Fayette County, WV, Gilmer County, WV, Greenbrier County, WV, Hancock County, WV, Harrison County, WV, Jackson County, WV, Kanawha County, WV, Lewis County, WV, Lincoln County, WV, Logan County, WV, Marion County, WV, Marshall County, WV, Mason County, WV, Mercer County, WV, Monongalia County, WV, Nicholas County, WV, Ohio County, WV, Pleasants County, WV, Pocahontas County, WV, Preston County, WV, Putnam County, WV, Raleigh County, WV, Randolph County, WV, Ritchie County, WV, Roane County, WV, Summers County, WV, Taylor County, WV, Tucker County, WV, Tyler County, WV, Upshur County, WV, Webster County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV, Wyoming County, WV

The radar

The Pittsburgh radar (KPBZ), 56 km from the middle of the area, began a volume at 17:26 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, 5.4 hours before the alert went out and 40 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 2008-06-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 94 joules per kilogram.LCLLFCEL10008507005003002001001 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 2008-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -34 square meters per square second.193958Sfc1 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
94 J/kg
Mixed-layer CIN
-227 J/kg
Mixed-layer LCL
1067 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
-34 m²/s²
0-3 km storm-relative helicity
64 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

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
Jun 10, 2:27 PM EDTMesoscale DiscussionSPCAllegany, Anne Arundel, Baltimore, Carroll, Charles, Frederick and 6 more63 min
Jun 10, 2:54 PM EDTSevere Thunderstorm WatchSPCAllegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 8 more7 hr
Jun 10, 4:52 PM EDTMesoscale DiscussionSPCCaroline, Cecil, Harford, Kent, Queen Anne's, Talbot53 min
Jun 10, 5:47 PM EDTSevere Thunderstorm WatchSPCCaroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset and 3 more7 hr
Jun 10, 6:51 PM EDTMesoscale DiscussionSPCBaltimore, Carroll, Cecil, Harford, Kent, City of Baltimore54 min
Jun 10, 9:43 AM EDTMesoscale DiscussionSPCBradford, Susquehanna, Wayne2 hr
Jun 10, 10:02 AM EDTTornado WatchSPCBradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more8 hr
Jun 10, 3:49 PM EDTMesoscale DiscussionSPCBradford, Susquehanna, Tioga, Wayne, Wyoming116 min
Jun 10, 3:06 PM EDTSevere Thunderstorm WatchSPCGreenbrier, Mercer, Monroe, Summers7 hr

Nearby

Mesoscale Discussions in West Virginia, 2008Mesoscale Discussions in Pennsylvania, 2008Mesoscale Discussions in Ohio, 2008Every mesoscale discussion in 2008

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.