Alert archive / Ohio / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 107
The Storm Prediction Center issued this severe thunderstorm watch at Apr 9, 2001, 5:00 PM EDT for 35 counties in Ohio; 15 counties in Pennsylvania; 10 counties in West Virginia. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 9, 2001, 5:00 PM EDT (21:00 UTC)
- Expired
- Apr 9, 2001, 10:00 PM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 60 counties
Adams County, OH, Athens County, OH, Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Delaware County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Guernsey County, OH, Harrison County, OH, Hocking County, OH, Holmes County, OH, Jackson County, OH, Jefferson County, OH, Knox County, OH, Licking County, OH, Madison County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Ross County, OH, Scioto County, OH, Stark County, OH, Tuscarawas County, OH, Union County, OH, Vinton County, OH, Washington County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Cambria County, PA, Clarion County, PA, Elk County, PA, Fayette County, PA, Greene County, PA, Indiana County, PA, Jefferson County, PA, Lawrence County, PA, Somerset County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Hancock County, WV, Marion County, WV, Marshall County, WV, Monongalia County, WV, Ohio County, WV, Pleasants County, WV, Tyler County, WV, Wetzel County, WV, Wood County, WV
The radar
The Pittsburgh radar (KPBZ), 124 km from the middle of the area, began a volume at 21:00 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
41 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 5:05 PM EDT | Tornado Warning | CTP | Cambria | 25 min |
| Apr 9, 5:05 PM EDT | Severe Thunderstorm Warning | PBZ | Brooke | 25 min |
| Apr 9, 5:11 PM EDT | Severe Thunderstorm Warning | CLE | Knox | 49 min |
| Apr 9, 5:13 PM EDT | Severe Thunderstorm Warning | ILN | Delaware, Licking | 47 min |
| Apr 9, 5:22 PM EDT | Severe Thunderstorm Warning | PBZ | Harrison | 38 min |
| Apr 9, 5:30 PM EDT | Severe Thunderstorm Warning | ILN | Madison | 45 min |
| Apr 9, 5:32 PM EDT | Severe Thunderstorm Warning | PBZ | Tuscarawas | 43 min |
| Apr 9, 5:47 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 58 min |
| Apr 9, 5:49 PM EDT | Severe Thunderstorm Warning | PBZ | Ohio | 41 min |
| Apr 9, 5:52 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 53 min |
| Apr 9, 5:57 PM EDT | Severe Thunderstorm Warning | PBZ | Harrison | 63 min |
| Apr 9, 6:03 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 57 min |
| Apr 9, 6:04 PM EDT | Severe Thunderstorm Warning | ILN | Fayette, Pickaway | 41 min |
| Apr 9, 6:07 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 53 min |
| Apr 9, 6:15 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 60 min |
| Apr 9, 6:20 PM EDT | Severe Thunderstorm Warning | PBZ | Guernsey | 55 min |
| Apr 9, 6:25 PM EDT | Severe Thunderstorm Warning | PBZ | Belmont | 65 min |
| Apr 9, 6:30 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 45 min |
| Apr 9, 6:31 PM EDT | Severe Thunderstorm Warning | PBZ | Marion, Monongalia | 59 min |
| Apr 9, 6:40 PM EDT | Severe Thunderstorm Warning | PBZ | Noble | 65 min |
| Apr 9, 6:45 PM EDT | Severe Thunderstorm Warning | ILN | Hocking, Pickaway, Ross | 45 min |
| Apr 9, 6:52 PM EDT | Severe Thunderstorm Warning | PBZ | Marshall, Ohio | 53 min |
| Apr 9, 6:57 PM EDT | Severe Thunderstorm Warning | PBZ | Monroe | 63 min |
| Apr 9, 6:59 PM EDT | Severe Thunderstorm Warning | ILN | Champaign, Union | 46 min |
| Apr 9, 7:17 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 58 min |
| Apr 9, 7:29 PM EDT | Severe Thunderstorm Warning | ILN | Hocking | 46 min |
| Apr 9, 7:33 PM EDT | Severe Thunderstorm Warning | ILN | Delaware | 57 min |
| Apr 9, 7:39 PM EDT | Severe Thunderstorm Warning | RLX | Vinton | 36 min |
| Apr 9, 7:39 PM EDT | Severe Thunderstorm Warning | PBZ | Wetzel | 66 min |
| Apr 9, 7:48 PM EDT | Severe Thunderstorm Warning | ILN | Fayette, Highland | 42 min |
| Apr 9, 8:00 PM EDT | Severe Thunderstorm Warning | ILN | Madison | 45 min |
| Apr 9, 8:11 PM EDT | Severe Thunderstorm Warning | RLX | Meigs | 39 min |
| Apr 9, 8:16 PM EDT | Severe Thunderstorm Warning | ILN | Franklin | 59 min |
| Apr 9, 8:21 PM EDT | Severe Thunderstorm Warning | ILN | Ross | 39 min |
| Apr 9, 8:22 PM EDT | Severe Thunderstorm Warning | RLX | Athens | 38 min |
| Apr 9, 8:26 PM EDT | Severe Thunderstorm Warning | ILN | Fayette | 49 min |
| Apr 9, 8:37 PM EDT | Severe Thunderstorm Warning | ILN | Pickaway | 43 min |
| Apr 9, 8:52 PM EDT | Severe Thunderstorm Warning | ILN | Fairfield | 53 min |
| Apr 9, 8:55 PM EDT | Severe Thunderstorm Warning | ILN | Ross | 65 min |
| Apr 9, 9:21 PM EDT | Severe Thunderstorm Warning | ILN | Hocking | 39 min |
| Apr 9, 9:37 PM EDT | Severe Thunderstorm Warning | ILN | Pike | 38 min |
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 9.0 hours before the alert went out and 129 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, 11:00 AM EDT | Severe Thunderstorm Watch | SPC | Ashland, Belmont, Carroll, Columbiana, Coshocton, Cuyahoga and 27 more | 6 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; radar from the NEXRAD Level II archive.