Alert archive / Pennsylvania / Tornado Watches in 2010
Tornado Watch 265
The Storm Prediction Center issued this tornado watch at Jun 5, 2010, 3:13 PM EDT for 11 counties in Ohio; 15 counties in Pennsylvania; 4 counties in West Virginia. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 5, 2010, 3:13 PM EDT (19:13 UTC)
- Expired
- Jun 5, 2010, 7:02 PM EDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 30 counties
Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Guernsey County, OH, Harrison County, OH, Jefferson County, OH, Monroe County, OH, Muskingum County, OH, Noble County, OH, Tuscarawas County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Clarion County, PA, Fayette County, PA, Forest County, PA, Greene County, PA, Indiana County, PA, Jefferson County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Hancock County, WV, Marshall County, WV, Ohio County, WV
The radar
The Pittsburgh radar (KPBZ), 43 km from the middle of the area, began a volume at 19:16 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 60%
- One or more EF2 to EF5 tornadoes
- 30%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 5, 3:16 PM EDT | Flash Flood Warning | PBZ | Coshocton, Tuscarawas | 3 hr |
| Jun 5, 3:33 PM EDT | Severe Thunderstorm Warning | PBZ | Belmont, Guernsey, Monroe, Noble | 42 min |
| Jun 5, 3:33 PM EDT | Severe Thunderstorm Warning | PBZ | Carroll, Harrison, Jefferson, Tuscarawas | 57 min |
| Jun 5, 4:20 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene, Washington | 55 min |
| Jun 5, 4:22 PM EDT | Severe Thunderstorm Warning | PBZ | Belmont, Guernsey, Monroe, Noble | 23 min |
| Jun 5, 4:26 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Washington | 64 min |
| Jun 5, 4:39 PM EDT | Flash Flood Warning | PBZ | Marshall | 3 hr |
| Jun 5, 4:41 PM EDT | Tornado Warning | PBZ | Fayette, Greene | 49 min |
| Jun 5, 5:02 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Jun 5, 5:07 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Washington | 38 min |
| Jun 5, 5:14 PM EDT | Severe Thunderstorm Warning | PBZ | Monroe | 46 min |
| Jun 5, 5:21 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Jun 5, 5:38 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 67 min |
| Jun 5, 5:44 PM EDT | Flash Flood Warning | PBZ | Belmont, Guernsey | 4 hr |
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 (KPIT), launched 12:00Z, 7.2 hours before the alert went out and 55 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
- 120 J/kg
- Mixed-layer CIN
- -71 J/kg
- Mixed-layer LCL
- 1013 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 171 m²/s²
- 0-3 km storm-relative helicity
- 190 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 10:53 PM EDT | Mesoscale Discussion | SPC | Darke, Mercer | 67 min |
| Jun 5, 8:51 AM EDT | Mesoscale Discussion | SPC | Allen, Ashland, Athens, Auglaize, Belmont, Butler and 59 more | 114 min |
| Jun 5, 1:35 PM EDT | Mesoscale Discussion | SPC | Allen, Ashland, Athens, Auglaize, Belmont, Butler and 51 more | 85 min |
| Jun 5, 2:08 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Ashland, Athens, Auglaize, Belmont, Brown and 61 more | 6 hr |
| Jun 5, 4:21 PM EDT | Mesoscale Discussion | SPC | Adams, Athens, Clinton, Fairfield, Fayette, Franklin and 16 more | 54 min |
| Jun 5, 7:14 PM EDT | Mesoscale Discussion | SPC | Adams, Athens, Brown, Butler, Clermont, Clinton and 21 more | 61 min |
| Jun 5, 1:00 PM EDT | Tornado Watch | SPC | Pike, Wayne | 7 hr |
| Jun 5, 7:30 PM EDT | Mesoscale Discussion | SPC | Wayne | 60 min |
Nearby
Tornado Watches in Pennsylvania, 2010Tornado Watches in Ohio, 2010Tornado Watches in West Virginia, 2010Every tornado watch in 2010
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.