Alert archive / Pennsylvania / Mesoscale Discussions in 2014
Mesoscale Discussion 726
The Storm Prediction Center issued this mesoscale discussion at May 27, 2014, 1:43 PM EDT for 6 states. It was in force for 62 min.
The area
The outline as issued.
The facts
- Issued
- May 27, 2014, 1:43 PM EDT (17:43 UTC)
- Expired
- May 27, 2014, 2:45 PM EDT
- In force
- 62 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
All 97 counties
Allegany County, MD, Carroll County, MD, Frederick County, MD, Garrett County, MD, Washington County, MD, Hunterdon County, NJ, Sussex County, NJ, Warren County, NJ, Broome County, NY, Chemung County, NY, Schuyler County, NY, Steuben County, NY, Tioga County, NY, Adams County, PA, Allegheny County, PA, Armstrong County, PA, Bedford County, PA, Berks County, PA, Blair County, PA, Bradford County, PA, Cambria County, PA, Cameron County, PA, Carbon County, PA, Centre County, PA, Clearfield County, PA, Clinton County, PA, Columbia County, PA, Cumberland County, PA, Dauphin County, PA, Elk County, PA, Fayette County, PA, Franklin County, PA, Fulton County, PA, Greene County, PA, Huntingdon County, PA, Indiana County, PA, Jefferson County, PA, Juniata County, PA, Lackawanna County, PA, Lancaster County, PA, Lebanon County, PA, Lehigh County, PA, Luzerne County, PA, Lycoming County, PA, Mifflin County, PA, Monroe County, PA, Montour County, PA, Northampton County, PA, Northumberland County, PA, Perry County, PA, Pike County, PA, Potter County, PA, Schuylkill County, PA, Snyder County, PA, Somerset County, PA, Sullivan County, PA, Susquehanna County, PA, Tioga County, PA, Union County, PA, Washington County, PA, Wayne County, PA, Westmoreland County, PA, Wyoming County, PA, York County, PA, City of Winchester, VA, Clarke County, VA, Frederick County, VA, Shenandoah County, VA, Barbour County, WV, Berkeley County, WV, Braxton County, WV, Calhoun County, WV, Doddridge County, WV, Gilmer County, WV, Grant County, WV, Hampshire County, WV, Hardy County, WV, Harrison County, WV, Jefferson County, WV, Lewis County, WV, Marion County, WV, Marshall County, WV, Mineral County, WV, Monongalia County, WV, Morgan County, WV, Pendleton County, WV, Pleasants County, WV, Pocahontas County, WV, Preston County, WV, Randolph County, WV, Ritchie County, WV, Taylor County, WV, Tucker County, WV, Tyler County, WV, Upshur County, WV, Webster County, WV, Wetzel County, WV
The radar
The State College radar (KCCX), 75 km from the middle of the area, began a volume at 17:42 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 (KAGC), launched 12:00Z, 5.7 hours before the alert went out and 175 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.
- Mixed-layer CAPE
- 148 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 1224 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 2:13 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 14 more | 8 hr |
| May 27, 6:39 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Charles and 9 more | 36 min |
| May 27, 3:02 PM EDT | Mesoscale Discussion | SPC | Bergen, Essex, Passaic | 58 min |
| May 27, 5:30 PM EDT | Severe Thunderstorm Watch | SPC | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 4 more | 3 hr |
| May 27, 7:05 PM EDT | Mesoscale Discussion | SPC | Suffolk | 55 min |
| May 27, 5:48 PM EDT | Mesoscale Discussion | SPC | Amelia, Appomattox, Bedford, Buckingham, Campbell, Charlotte and 22 more | 57 min |
Nearby
Mesoscale Discussions in Pennsylvania, 2014Mesoscale Discussions in West Virginia, 2014Mesoscale Discussions in Maryland, 2014Every mesoscale discussion in 2014
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.