Alert archive / Pennsylvania / Tornado Watches in 2002

Tornado Watch 750

November 10, 20029 counties in Ohio; 17 counties in Pennsylvania; 4 counties in West Virginia

The Storm Prediction Center issued this tornado watch at Nov 10, 2002, 6:45 PM EST for 9 counties in Ohio; 17 counties in Pennsylvania; 4 counties in West Virginia. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Nov 10, 2002, 6:45 PM EST (23:45 UTC)
Expired: Nov 11, 2002, 12:00 AM EST
In force: 5 hr
Issued by: the Storm Prediction Center

All 30 counties

Belmont County, OH, Carroll County, OH, Columbiana County, OH, Harrison County, OH, Jefferson County, OH, Mahoning County, OH, Monroe County, OH, Noble County, OH, Trumbull County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Clarion County, PA, Crawford County, PA, Fayette County, PA, Forest County, PA, Greene County, PA, Jefferson County, PA, Lawrence County, PA, McKean County, PA, Mercer County, PA, Venango County, PA, Warren 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), 17 km from the middle of the area, began a volume at 23:47 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

26 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Nov 10, 7:11 PM EST	Tornado Warning	CLE	Mahoning, Trumbull	64 min
Nov 10, 7:11 PM EST	Severe Thunderstorm Warning	PBZ	Carroll	64 min
Nov 10, 7:48 PM EST	Severe Thunderstorm Warning	PBZ	Mercer	57 min
Nov 10, 7:56 PM EST	Tornado Warning	PBZ	Mercer	64 min
Nov 10, 8:04 PM EST	Severe Thunderstorm Warning	CLE	Crawford	56 min
Nov 10, 8:15 PM EST	Severe Thunderstorm Warning	CLE	Mahoning, Trumbull	60 min
Nov 10, 8:23 PM EST	Tornado Warning	CLE	Crawford	67 min
Nov 10, 8:24 PM EST	Severe Thunderstorm Warning	PBZ	Venango	66 min
Nov 10, 8:31 PM EST	Severe Thunderstorm Warning	PBZ	Lawrence	59 min
Nov 10, 8:44 PM EST	Severe Thunderstorm Warning	CTP	Warren	61 min
Nov 10, 9:11 PM EST	Severe Thunderstorm Warning	PBZ	Mercer	34 min
Nov 10, 9:15 PM EST	Severe Thunderstorm Warning	PBZ	Carroll	60 min
Nov 10, 9:16 PM EST	Severe Thunderstorm Warning	PBZ	Harrison	59 min
Nov 10, 9:23 PM EST	Severe Thunderstorm Warning	PBZ	Venango	67 min
Nov 10, 9:39 PM EST	Severe Thunderstorm Warning	PBZ	Columbiana	66 min
Nov 10, 9:42 PM EST	Severe Thunderstorm Warning	PBZ	Jefferson	48 min
Nov 10, 9:42 PM EST	Tornado Warning	CTP	Warren	33 min
Nov 10, 9:42 PM EST	Tornado Warning	CTP	Warren	33 min
Nov 10, 9:50 PM EST	Severe Thunderstorm Warning	PBZ	Brooke, Hancock	40 min
Nov 10, 9:55 PM EST	Severe Thunderstorm Warning	PBZ	Beaver, Washington	65 min
Nov 10, 10:08 PM EST	Severe Thunderstorm Warning	CTP	Warren	22 min
Nov 10, 10:08 PM EST	Severe Thunderstorm Warning	CTP	Warren	22 min
Nov 10, 10:08 PM EST	Severe Thunderstorm Warning	PBZ	Allegheny	52 min
Nov 10, 10:14 PM EST	Severe Thunderstorm Warning	PBZ	Butler	61 min
Nov 10, 10:44 PM EST	Severe Thunderstorm Warning	PBZ	Westmoreland	61 min
Nov 10, 10:47 PM EST	Severe Thunderstorm Warning	PBZ	Armstrong	58 min

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 11.8 hours before the alert went out and 33 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1233 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 348 m²/s²
0-3 km storm-relative helicity: 310 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 10, 1:40 PM EST	Severe Thunderstorm Watch	SPC	Allen, Auglaize, Crawford, Defiance, Erie, Fulton and 18 more	5 hr
Nov 10, 3:35 PM EST	Tornado Watch	SPC	Adams, Brown, Butler, Champaign, Clark, Clermont and 25 more	6 hr
Nov 10, 4:35 PM EST	Tornado Watch	SPC	Allen, Ashland, Auglaize, Crawford, Cuyahoga, Erie and 24 more	5 hr
Nov 10, 5:50 PM EST	Tornado Watch	SPC	Athens, Gallia, Jackson, Lawrence, Meigs, Pike and 2 more	5 hr

Nearby

Tornado Watches in Pennsylvania, 2002 Tornado Watches in Ohio, 2002 Tornado Watches in West Virginia, 2002 Every tornado watch in 2002

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.