Alert archive / Pennsylvania / Severe Thunderstorm Watches in 2005
Severe Thunderstorm Watch 855
The Storm Prediction Center issued this severe thunderstorm watch at Nov 9, 2005, 11:35 AM EST for 7 counties in New York; 4 counties in Ohio; 12 counties in Pennsylvania. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Nov 9, 2005, 11:35 AM EST (16:35 UTC)
- Expired
- Nov 9, 2005, 6:40 PM EST
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
All 23 counties
Allegany County, NY, Cattaraugus County, NY, Chautauqua County, NY, Erie County, NY, Genesee County, NY, Livingston County, NY, Wyoming County, NY, Ashtabula County, OH, Mahoning County, OH, Portage County, OH, Trumbull County, OH, Butler County, PA, Clarion County, PA, Crawford County, PA, Elk County, PA, Erie County, PA, Forest County, PA, Jefferson County, PA, Lawrence County, PA, McKean County, PA, Mercer County, PA, Venango County, PA, Warren County, PA
The radar
The Buffalo radar (KBUF), 97 km from the middle of the area, began a volume at 16:37 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.
Warnings issued inside it
13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 9, 11:57 AM EST | Severe Thunderstorm Warning | BUF | Chautauqua | 48 min |
| Nov 9, 12:55 PM EST | Severe Thunderstorm Warning | BUF | Cattaraugus | 50 min |
| Nov 9, 12:55 PM EST | Severe Thunderstorm Warning | BUF | Chautauqua, Erie | 65 min |
| Nov 9, 2:53 PM EST | Severe Thunderstorm Warning | BUF | Genesee, Monroe | 37 min |
| Nov 9, 4:09 PM EST | Severe Thunderstorm Warning | CLE | Erie | 66 min |
| Nov 9, 4:23 PM EST | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua, Erie | 52 min |
| Nov 9, 4:57 PM EST | Tornado Warning | BUF | Cattaraugus | 48 min |
| Nov 9, 5:05 PM EST | Severe Thunderstorm Warning | CLE | Crawford | 40 min |
| Nov 9, 5:33 PM EST | Severe Thunderstorm Warning | CTP | Warren | 57 min |
| Nov 9, 5:47 PM EST | Severe Thunderstorm Warning | PBZ | Forest, Venango | 58 min |
| Nov 9, 5:57 PM EST | Severe Thunderstorm Warning | PBZ | Butler, Clarion | 63 min |
| Nov 9, 6:26 PM EST | Tornado Warning | PBZ | Clarion, Jefferson | 49 min |
| Nov 9, 6:31 PM EST | Severe Thunderstorm Warning | CTP | Elk | 59 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
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 4.6 hours before the alert went out and 97 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
- 833 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 325 m²/s²
- 0-3 km storm-relative helicity
- 347 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 9, 10:49 AM EST | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston and 5 more | 116 min |
| Nov 9, 6:04 PM EST | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Cayuga, Chemung, Erie, Genesee and 11 more | 56 min |
| Nov 8, 7:35 PM EST | Severe Thunderstorm Watch | SPC | Defiance, Paulding, Williams | 8 hr |
| Nov 8, 8:44 PM EST | Mesoscale Discussion | SPC | Allen, Ashland, Athens, Auglaize, Belmont, Carroll and 59 more | 91 min |
| Nov 8, 10:15 PM EST | Severe Thunderstorm Watch | SPC | Allen, Ashland, Auglaize, Champaign, Clark, Crawford and 30 more | 7 hr |
| Nov 8, 10:25 PM EST | Mesoscale Discussion | SPC | Allen, Defiance, Fulton, Paulding, Putnam, Van Wert and 1 more | 2 hr |
| Nov 9, 12:29 AM EST | Mesoscale Discussion | SPC | Allen, Ashland, Ashtabula, Auglaize, Carroll, Champaign and 52 more | 91 min |
| Nov 9, 3:31 PM EST | Mesoscale Discussion | SPC | Adams, Athens, Belmont, Brown, Carroll, Clermont and 39 more | 119 min |
| Nov 9, 4:35 PM EST | Tornado Watch | SPC | Belmont, Carroll, Columbiana, Guernsey, Harrison, Jefferson and 10 more | 4 hr |
| Nov 9, 6:45 PM EST | Severe Thunderstorm Watch | SPC | Bradford, Cameron, Centre, Clearfield, Clinton, Lycoming and 8 more | 3 hr |
Nearby
Severe Thunderstorm Watches in Pennsylvania, 2005Severe Thunderstorm Watches in New York, 2005Severe Thunderstorm Watches in Ohio, 2005Every severe thunderstorm watch in 2005
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.