Alert archive / Ohio / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 152
The Storm Prediction Center issued this severe thunderstorm watch at May 6, 2004, 11:20 PM EDT for Cattaraugus County, Chautauqua County, New York; 33 counties in Ohio; 15 counties in Pennsylvania. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- May 6, 2004, 11:20 PM EDT (03:20 UTC)
- Expired
- May 7, 2004, 4:00 AM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 50 counties
Cattaraugus County, NY, Chautauqua County, NY, Ashland County, OH, Ashtabula County, OH, Carroll County, OH, Columbiana County, OH, Crawford County, OH, Cuyahoga County, OH, Delaware County, OH, Erie County, OH, Geauga County, OH, Hancock County, OH, Hardin County, OH, Holmes County, OH, Huron County, OH, Knox County, OH, Lake County, OH, Lorain County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Morrow County, OH, Ottawa County, OH, Portage County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Union County, OH, Wayne County, OH, Wood County, OH, Wyandot County, OH, Armstrong County, PA, Beaver County, PA, Butler County, PA, Clarion County, PA, Clearfield 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 Cleveland radar (KCLE), 27 km from the middle of the area, began a volume at 03:23 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
2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 3:44 AM EDT | Severe Thunderstorm Warning | BUF | Chautauqua | 31 min |
| May 7, 3:47 AM EDT | Severe Thunderstorm Warning | CLE | Erie | 28 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
Pittsburgh, PA (KPIT), launched 00:00Z, 3.3 hours before the alert went out and 159 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
- 359 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1805 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 11:05 PM EDT | Mesoscale Discussion | SPC | Cattaraugus, Chautauqua | 85 min |
| May 7, 3:13 AM EDT | Mesoscale Discussion | SPC | Cattaraugus, Chautauqua | 62 min |
| May 6, 9:37 PM EDT | Mesoscale Discussion | SPC | Defiance, Erie, Fulton, Henry, Huron, Lucas and 7 more | 83 min |
| May 6, 10:10 PM EDT | Severe Thunderstorm Watch | SPC | Allen, Crawford, Defiance, Fulton, Hancock, Henry and 11 more | 5 hr |
| May 7, 7:38 AM EDT | Mesoscale Discussion | SPC | Mercer | 97 min |
| May 7, 9:30 AM EDT | Mesoscale Discussion | SPC | Allen, Auglaize, Champaign, Clark, Coshocton, Darke and 26 more | 90 min |
| May 7, 9:30 AM EDT | Severe Thunderstorm Watch | SPC | Allen, Auglaize, Butler, Champaign, Clark, Clinton and 24 more | 6 hr |
| May 7, 10:29 AM EDT | Mesoscale Discussion | SPC | Athens, Belmont, Carroll, Coshocton, Guernsey, Harrison and 9 more | 91 min |
| May 7, 11:00 AM EDT | Severe Thunderstorm Watch | SPC | Athens, Belmont, Coshocton, Gallia, Guernsey, Harrison and 10 more | 6 hr |
| May 7, 12:49 PM EDT | Mesoscale Discussion | SPC | Athens, Champaign, Clark, Clinton, Delaware, Fairfield and 24 more | 86 min |
| May 7, 1:49 PM EDT | Mesoscale Discussion | SPC | Athens, Belmont, Gallia, Guernsey, Harrison, Hocking and 7 more | 86 min |
| May 7, 1:24 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Chester, Delaware, Montgomery, Philadelphia | 96 min |
| May 7, 1:40 PM EDT | Severe Thunderstorm Watch | SPC | Chester, Delaware, Montgomery, Philadelphia | 3 hr |
Nearby
Severe Thunderstorm Watches in Ohio, 2004Severe Thunderstorm Watches in Pennsylvania, 2004Severe Thunderstorm Watches in New York, 2004Every severe thunderstorm watch in 2004
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.