Alert archive / Pennsylvania / Severe Thunderstorm Watches in 2014
Severe Thunderstorm Watch 414
The Storm Prediction Center issued this severe thunderstorm watch at Jul 13, 2014, 4:06 PM EDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 13, 2014, 4:06 PM EDT (20:06 UTC)
- Expired
- Jul 13, 2014, 10:29 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 52 counties
Allegany County, MD, Frederick County, MD, Washington County, MD, Broome County, NY, Chemung County, NY, Delaware County, NY, Steuben County, NY, Sullivan County, NY, Tioga County, NY, Adams County, PA, Bedford County, PA, Blair County, PA, Bradford County, PA, Cambria County, PA, Cameron County, PA, Centre County, PA, Clearfield County, PA, Clinton County, PA, Columbia County, PA, Cumberland County, PA, Dauphin County, PA, Elk County, PA, Franklin County, PA, Fulton County, PA, Huntingdon County, PA, Juniata County, PA, Lackawanna County, PA, Lancaster County, PA, Lebanon County, PA, Luzerne County, PA, Lycoming County, PA, Mifflin County, PA, Montour 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, Wayne County, PA, Wyoming County, PA, York County, PA, Berkeley County, WV, Hampshire County, WV, Jefferson County, WV, Mineral County, WV, Morgan County, WV
The radar
The State College radar (KCCX), 40 km from the middle of the area, began a volume at 20:09 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
32 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 4:29 PM EDT | Severe Thunderstorm Warning | BGM | Chemung, Schuyler, Steuben, Tompkins, Yates | 46 min |
| Jul 13, 4:49 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Clearfield, Elk | 56 min |
| Jul 13, 4:55 PM EDT | Severe Thunderstorm Warning | BGM | Delaware, Sullivan | 65 min |
| Jul 13, 5:01 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair, Cambria, Somerset | 59 min |
| Jul 13, 5:07 PM EDT | Tornado Warning | BGM | Chemung, Schuyler, Tioga, Tompkins | 38 min |
| Jul 13, 5:15 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Chemung, Chenango, Steuben, Tioga | 60 min |
| Jul 13, 5:34 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Centre, Clearfield, Clinton, Elk | 56 min |
| Jul 13, 5:41 PM EDT | Tornado Warning | BGM | Sullivan | 49 min |
| Jul 13, 5:46 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Potter, Tioga | 44 min |
| Jul 13, 5:48 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Cambria, Somerset | 42 min |
| Jul 13, 5:53 PM EDT | Tornado Warning | BGM | Broome, Tioga | 37 min |
| Jul 13, 6:01 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair, Huntingdon, Mifflin | 44 min |
| Jul 13, 6:12 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Chenango, Delaware, Tioga | 63 min |
| Jul 13, 6:12 PM EDT | Severe Thunderstorm Warning | CTP | Blair, Cambria, Centre, Clearfield, Clinton, Huntingdon | 63 min |
| Jul 13, 6:26 PM EDT | Tornado Warning | BGM | Broome | 49 min |
| Jul 13, 6:30 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair, Cambria, Fulton, Huntingdon, Mifflin and 1 more | 60 min |
| Jul 13, 6:42 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton, Lycoming, Mifflin, Montour, Northumberland and 2 more | 63 min |
| Jul 13, 7:05 PM EDT | Severe Thunderstorm Warning | LWX | Berkeley, Hampshire, Morgan | 40 min |
| Jul 13, 7:13 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Delaware | 47 min |
| Jul 13, 7:19 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Juniata, Lycoming, Montour, Northumberland, Schuylkill and 3 more | 71 min |
| Jul 13, 7:29 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna, Wyoming | 61 min |
| Jul 13, 7:31 PM EDT | Severe Thunderstorm Warning | LWX | Berkeley, Hampshire, Morgan | 29 min |
| Jul 13, 7:34 PM EDT | Tornado Warning | LWX | Berkeley, Morgan | 26 min |
| Jul 13, 7:42 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 48 min |
| Jul 13, 8:01 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lebanon, Perry | 59 min |
| Jul 13, 8:07 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Washington | 38 min |
| Jul 13, 8:10 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Franklin, York | 80 min |
| Jul 13, 8:24 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 36 min |
| Jul 13, 8:25 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 64 min |
| Jul 13, 8:29 PM EDT | Flash Flood Warning | BGM | Broome, Delaware | 3 hr |
| Jul 13, 8:32 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Schuylkill | 58 min |
| Jul 13, 8:59 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin, Lancaster, Lebanon, York | 61 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Pittsburgh, PA (KAGC), launched 12:00Z, 8.1 hours before the alert went out and 180 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1488 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 155 m²/s²
- 0-3 km storm-relative helicity
- 161 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 1:17 PM EDT | Severe Thunderstorm Watch | SPC | Garrett | 7 hr |
| Jul 13, 7:49 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Caroline, Carroll, Cecil, Harford and 7 more | 4 hr |
| Jul 13, 3:10 PM EDT | Mesoscale Discussion | SPC | Broome, Chemung, Steuben, Tioga | 2 hr |
| Jul 13, 5:49 PM EDT | Mesoscale Discussion | SPC | Broome, Columbia, Delaware, Dutchess, Greene, Orange and 6 more | 86 min |
| Jul 13, 6:25 PM EDT | Severe Thunderstorm Watch | SPC | Columbia, Dutchess, Orange, Putnam, Ulster | 4 hr |
| Jul 13, 12:37 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 10 more | 53 min |
| Jul 13, 6:18 PM EDT | Mesoscale Discussion | SPC | Allegheny, Fayette, Greene, Washington, Westmoreland | 87 min |
| Jul 13, 7:06 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Carbon, Chester, Columbia, Cumberland and 20 more | 84 min |
Nearby
Severe Thunderstorm Watches in Pennsylvania, 2014Severe Thunderstorm Watches in New York, 2014Severe Thunderstorm Watches in West Virginia, 2014Every severe thunderstorm watch 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.