Alert archive / Ohio / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 105
The Storm Prediction Center issued this severe thunderstorm watch at Apr 9, 2001, 11:00 AM EDT for 33 counties in Ohio; 21 counties in Pennsylvania; 4 counties in West Virginia. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 9, 2001, 11:00 AM EDT (15:00 UTC)
- Expired
- Apr 9, 2001, 5:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 58 counties
Ashland County, OH, Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Cuyahoga County, OH, Erie County, OH, Fairfield County, OH, Geauga County, OH, Guernsey County, OH, Harrison County, OH, Hocking County, OH, Holmes County, OH, Huron County, OH, Jefferson County, OH, Knox County, OH, Licking County, OH, Lorain County, OH, Mahoning County, OH, Medina County, OH, Monroe County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Portage County, OH, Richland County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Wayne County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Cambria County, PA, Clarion County, PA, Crawford County, PA, Elk County, PA, Fayette County, PA, Forest County, PA, Greene County, PA, Indiana County, PA, Jefferson County, PA, Lawrence County, PA, McKean County, PA, Mercer County, PA, Somerset 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
Warnings issued inside it
35 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 12:30 PM EDT | Severe Thunderstorm Warning | CLE | Trumbull | 45 min |
| Apr 9, 12:53 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 52 min |
| Apr 9, 12:57 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 63 min |
| Apr 9, 1:09 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Warren | 51 min |
| Apr 9, 1:45 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 60 min |
| Apr 9, 1:52 PM EDT | Severe Thunderstorm Warning | PBZ | Forest | 53 min |
| Apr 9, 2:06 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Potter | 54 min |
| Apr 9, 2:23 PM EDT | Severe Thunderstorm Warning | CLE | Mahoning | 37 min |
| Apr 9, 2:30 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 60 min |
| Apr 9, 2:45 PM EDT | Tornado Warning | PBZ | Lawrence | 45 min |
| Apr 9, 3:02 PM EDT | Tornado Warning | PBZ | Butler | 43 min |
| Apr 9, 3:09 PM EDT | Tornado Warning | CLE | Stark, Wayne | 51 min |
| Apr 9, 3:11 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 49 min |
| Apr 9, 3:32 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 58 min |
| Apr 9, 3:35 PM EDT | Severe Thunderstorm Warning | PBZ | Carroll | 55 min |
| Apr 9, 3:40 PM EDT | Severe Thunderstorm Warning | CLE | Knox, Morrow | 65 min |
| Apr 9, 3:43 PM EDT | Flash Flood Warning | CLE | Crawford | 2 hr |
| Apr 9, 3:57 PM EDT | Severe Thunderstorm Warning | CLE | Stark | 48 min |
| Apr 9, 4:01 PM EDT | Severe Thunderstorm Warning | PBZ | Columbiana | 59 min |
| Apr 9, 4:04 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 56 min |
| Apr 9, 4:07 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 53 min |
| Apr 9, 4:10 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 65 min |
| Apr 9, 4:16 PM EDT | Severe Thunderstorm Warning | CLE | Wayne | 44 min |
| Apr 9, 4:18 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Warren | 57 min |
| Apr 9, 4:18 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 57 min |
| Apr 9, 4:27 PM EDT | Tornado Warning | CLE | Wayne | 33 min |
| Apr 9, 4:28 PM EDT | Severe Thunderstorm Warning | PBZ | Hancock | 47 min |
| Apr 9, 4:31 PM EDT | Severe Thunderstorm Warning | PBZ | Carroll | 44 min |
| Apr 9, 4:32 PM EDT | Severe Thunderstorm Warning | CTP | Cambria, Clearfield | 73 min |
| Apr 9, 4:42 PM EDT | Severe Thunderstorm Warning | CLE | Stark | 48 min |
| Apr 9, 4:45 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Westmoreland | 60 min |
| Apr 9, 4:48 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 57 min |
| Apr 9, 4:52 PM EDT | Severe Thunderstorm Warning | CLE | Holmes | 38 min |
| Apr 9, 4:55 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 65 min |
| Apr 9, 4:57 PM EDT | Severe Thunderstorm Warning | CLE | Wayne | 33 min |
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 3.0 hours before the alert went out and 101 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
- 841 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 1013 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 139 m²/s²
- 0-3 km storm-relative helicity
- 106 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.8
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 5:00 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Athens, Belmont, Carroll, Columbiana, Coshocton and 29 more | 5 hr |
| Apr 9, 7:00 PM EDT | Severe Thunderstorm Watch | SPC | Gallia, Scioto | 5 hr |
| Apr 9, 7:15 PM EDT | Severe Thunderstorm Watch | SPC | Auglaize, Brown, Butler, Champaign, Clark, Clermont and 12 more | 6 hr |
| Apr 9, 2:30 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Blair, Cameron, Centre and 22 more | 6 hr |
| Apr 9, 7:00 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Blair, Bucks, Carbon and 27 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Ohio, 2001Severe Thunderstorm Watches in Pennsylvania, 2001Severe Thunderstorm Watches in West Virginia, 2001Every severe thunderstorm watch in 2001
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.