Alert archive / Ohio / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 287
The Storm Prediction Center issued this severe thunderstorm watch at May 12, 2002, 10:45 AM EDT for 43 counties in Ohio; 17 counties in Pennsylvania; 8 counties in West Virginia. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- May 12, 2002, 10:45 AM EDT (14:45 UTC)
- Expired
- May 12, 2002, 4:00 PM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 68 counties
Ashland County, OH, Athens County, OH, Belmont County, OH, Brown County, OH, Carroll County, OH, Champaign County, OH, Clark County, OH, Clinton County, OH, Columbiana County, OH, Coshocton County, OH, Delaware County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Greene County, OH, Guernsey County, OH, Harrison County, OH, Highland County, OH, Hocking County, OH, Holmes County, OH, Jefferson County, OH, Knox County, OH, Licking County, OH, Logan County, OH, Madison County, OH, Mahoning County, OH, Marion 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, Richland County, OH, Ross County, OH, Stark County, OH, Tuscarawas County, OH, Union County, OH, Vinton County, OH, Washington County, OH, Wayne County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Bedford County, PA, Butler County, PA, Cambria County, PA, Clarion County, PA, Clearfield 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, Marshall County, WV, Monongalia County, WV, Ohio County, WV, Pleasants County, WV, Tyler County, WV, Wetzel County, WV
The radar
The Cleveland radar (KCLE), 124 km from the middle of the area, began a volume at 14:46 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
36 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 11:09 AM EDT | Severe Thunderstorm Warning | ILN | Champaign, Union | 51 min |
| May 12, 11:22 AM EDT | Severe Thunderstorm Warning | ILN | Clark | 38 min |
| May 12, 11:27 AM EDT | Severe Thunderstorm Warning | ILN | Greene | 33 min |
| May 12, 11:31 AM EDT | Severe Thunderstorm Warning | ILN | Delaware, Franklin | 59 min |
| May 12, 11:41 AM EDT | Severe Thunderstorm Warning | ILN | Madison | 49 min |
| May 12, 12:01 PM EDT | Severe Thunderstorm Warning | ILN | Licking | 44 min |
| May 12, 12:04 PM EDT | Severe Thunderstorm Warning | ILN | Clinton | 26 min |
| May 12, 12:10 PM EDT | Severe Thunderstorm Warning | CLE | Knox | 20 min |
| May 12, 12:26 PM EDT | Severe Thunderstorm Warning | PBZ | Coshocton | 64 min |
| May 12, 12:32 PM EDT | Severe Thunderstorm Warning | ILN | Pickaway | 28 min |
| May 12, 12:35 PM EDT | Severe Thunderstorm Warning | PBZ | Muskingum | 55 min |
| May 12, 1:01 PM EDT | Severe Thunderstorm Warning | PBZ | Tuscarawas | 59 min |
| May 12, 1:02 PM EDT | Severe Thunderstorm Warning | RLX | Perry | 13 min |
| May 12, 1:09 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 66 min |
| May 12, 1:12 PM EDT | Severe Thunderstorm Warning | PBZ | Columbiana | 63 min |
| May 12, 1:13 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 47 min |
| May 12, 1:15 PM EDT | Severe Thunderstorm Warning | ILN | Fairfield, Hocking | 30 min |
| May 12, 1:20 PM EDT | Severe Thunderstorm Warning | PBZ | Carroll, Harrison | 55 min |
| May 12, 1:35 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 70 min |
| May 12, 1:42 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 63 min |
| May 12, 1:44 PM EDT | Severe Thunderstorm Warning | PBZ | Belmont | 61 min |
| May 12, 1:51 PM EDT | Flash Flood Warning | PBZ | Clarion, Venango | 3 hr |
| May 12, 1:53 PM EDT | Severe Thunderstorm Warning | PBZ | Brooke, Hancock | 52 min |
| May 12, 1:58 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 62 min |
| May 12, 2:01 PM EDT | Flash Flood Warning | CTP | Clearfield | 6 hr |
| May 12, 2:07 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 53 min |
| May 12, 2:09 PM EDT | Flash Flood Warning | PBZ | Jefferson | 3 hr |
| May 12, 2:09 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 66 min |
| May 12, 2:13 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 62 min |
| May 12, 2:43 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 62 min |
| May 12, 3:10 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 80 min |
| May 12, 3:17 PM EDT | Severe Thunderstorm Warning | RLX | Morgan, Washington | 28 min |
| May 12, 3:19 PM EDT | Severe Thunderstorm Warning | CTP | Cambria, Somerset | 41 min |
| May 12, 3:39 PM EDT | Severe Thunderstorm Warning | PBZ | Wetzel | 81 min |
| May 12, 3:41 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair | 49 min |
| May 12, 3:48 PM EDT | Severe Thunderstorm Warning | RLX | Washington | 42 min |
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 2.8 hours before the alert went out and 135 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
- 637 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 680 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 148 m²/s²
- 0-3 km storm-relative helicity
- 125 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.7
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 3:30 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Blair, Carbon, Chester and 19 more | 6 hr |
| May 12, 5:15 PM EDT | Severe Thunderstorm Watch | SPC | Chester, Delaware, Montgomery, Philadelphia | 5 hr |
Nearby
Severe Thunderstorm Watches in Ohio, 2002Severe Thunderstorm Watches in Pennsylvania, 2002Severe Thunderstorm Watches in West Virginia, 2002Every severe thunderstorm 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.