Alert archive / Pennsylvania / Mesoscale Discussions in 2019
Mesoscale Discussion 356
The Storm Prediction Center issued this mesoscale discussion at Apr 14, 2019, 9:14 PM EDT for 6 counties in New York; 29 counties in Pennsylvania. It was in force for 61 min.
The area
The outline as issued.
The facts
- Issued
- Apr 14, 2019, 9:14 PM EDT (01:14 UTC)
- Expired
- Apr 14, 2019, 10:15 PM EDT
- In force
- 61 min
- Issued by
- the Storm Prediction Center
All 35 counties
Allegany County, NY, Cattaraugus County, NY, Chemung County, NY, Schuyler County, NY, Steuben County, NY, Wyoming County, NY, Armstrong County, PA, Bedford County, PA, Blair County, PA, Cambria County, PA, Cameron County, PA, Centre County, PA, Clarion County, PA, Clearfield County, PA, Clinton County, PA, Cumberland County, PA, Elk County, PA, Fayette County, PA, Forest County, PA, Franklin County, PA, Fulton County, PA, Huntingdon County, PA, Indiana County, PA, Jefferson County, PA, Juniata County, PA, Lycoming County, PA, McKean County, PA, Mifflin County, PA, Perry County, PA, Potter County, PA, Snyder County, PA, Somerset County, PA, Tioga County, PA, Union County, PA, Westmoreland County, PA
The radar
The State College radar (KCCX), 50 km from the middle of the area, began a volume at 01:16 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 00:00Z, 1.2 hours before the alert went out and 172 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
- 144 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 1545 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 339 m²/s²
- 0-3 km storm-relative helicity
- 465 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.4
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 9:56 PM EDT | Tornado Watch | SPC | Broome, Cayuga, Chemung, Chenango, Cortland, Delaware and 10 more | 5 hr |
| Apr 14, 11:56 PM EDT | Mesoscale Discussion | SPC | Albany, Bronx, Broome, Chemung, Chenango, Columbia and 26 more | 2 hr |
| Apr 15, 12:33 AM EDT | Mesoscale Discussion | SPC | Essex, Fulton, Hamilton, Herkimer, Jefferson, Lewis and 8 more | 117 min |
| Apr 15, 1:05 AM EDT | Tornado Watch | SPC | Bronx, Columbia, Dutchess, Greene, Kings, Nassau and 8 more | 5 hr |
| Apr 15, 3:50 AM EDT | Mesoscale Discussion | SPC | Albany, Bronx, Columbia, Dutchess, Greene, Kings and 9 more | 55 min |
| Apr 15, 12:44 AM EDT | Mesoscale Discussion | SPC | Montour, Northumberland, Snyder, Union | 61 min |
Nearby
Mesoscale Discussions in Pennsylvania, 2019Mesoscale Discussions in New York, 2019Every mesoscale discussion in 2019
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.