Alert archive / Ohio / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 634
The Storm Prediction Center issued this severe thunderstorm watch at Jul 4, 2003, 10:45 AM EDT for 17 counties in Michigan; 26 counties in Ohio; Hancock County, West Virginia. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 4, 2003, 10:45 AM EDT (14:45 UTC)
- Expired
- Jul 4, 2003, 4:00 PM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 44 counties
Clinton County, MI, Genesee County, MI, Gratiot County, MI, Hillsdale County, MI, Ingham County, MI, Jackson County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Monroe County, MI, Oakland County, MI, Saginaw County, MI, Saint Clair County, MI, Shiawassee County, MI, Washtenaw County, MI, Wayne County, MI, Ashland County, OH, Ashtabula County, OH, Carroll County, OH, Columbiana County, OH, Cuyahoga County, OH, Defiance County, OH, Erie County, OH, Fulton County, OH, Geauga County, OH, Henry County, OH, Huron County, OH, Lake County, OH, Lorain County, OH, Lucas County, OH, Mahoning County, OH, Medina County, OH, Ottawa County, OH, Portage County, OH, Sandusky County, OH, Seneca County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Wayne County, OH, Williams County, OH, Wood County, OH, Hancock County, WV
The radar
The Detroit radar (KDTX), 60 km from the middle of the area, began a volume at 14:48 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 |
|---|---|---|---|---|
| Jul 4, 11:18 AM EDT | Severe Thunderstorm Warning | GRR | Clinton, Ionia | 42 min |
| Jul 4, 11:32 AM EDT | Severe Thunderstorm Warning | GRR | Ingham, Jackson | 58 min |
| Jul 4, 11:46 AM EDT | Severe Thunderstorm Warning | DTX | Livingston, Shiawassee, Washtenaw | 59 min |
| Jul 4, 11:57 AM EDT | Severe Thunderstorm Warning | GRR | Clinton | 33 min |
| Jul 4, 12:08 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 67 min |
| Jul 4, 12:09 PM EDT | Severe Thunderstorm Warning | IWX | Williams | 66 min |
| Jul 4, 12:12 PM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 63 min |
| Jul 4, 12:27 PM EDT | Severe Thunderstorm Warning | DTX | Genesee | 63 min |
| Jul 4, 12:32 PM EDT | Severe Thunderstorm Warning | IWX | Fulton | 58 min |
| Jul 4, 12:36 PM EDT | Severe Thunderstorm Warning | DTX | Monroe, Oakland, Wayne | 69 min |
| Jul 4, 12:37 PM EDT | Severe Thunderstorm Warning | IWX | Defiance, Henry | 53 min |
| Jul 4, 12:49 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 41 min |
| Jul 4, 12:55 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer | 65 min |
| Jul 4, 1:04 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 56 min |
| Jul 4, 1:10 PM EDT | Severe Thunderstorm Warning | CLE | Lucas, Wood | 50 min |
| Jul 4, 1:12 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 63 min |
| Jul 4, 1:43 PM EDT | Severe Thunderstorm Warning | CLE | Ottawa, Sandusky, Seneca, Wyandot | 47 min |
| Jul 4, 2:00 PM EDT | Severe Thunderstorm Warning | CLE | Trumbull | 60 min |
| Jul 4, 2:23 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 67 min |
| Jul 4, 2:39 PM EDT | Severe Thunderstorm Warning | CLE | Huron, Mahoning, Portage | 66 min |
| Jul 4, 2:58 PM EDT | Severe Thunderstorm Warning | CLE | Ashland, Lorain | 47 min |
| Jul 4, 3:07 PM EDT | Severe Thunderstorm Warning | CLE | Geauga, Trumbull | 38 min |
| Jul 4, 3:18 PM EDT | Severe Thunderstorm Warning | CLE | Cuyahoga, Medina | 57 min |
| Jul 4, 3:27 PM EDT | Severe Thunderstorm Warning | CLE | Summit | 63 min |
| Jul 4, 3:42 PM EDT | Severe Thunderstorm Warning | CLE | Wayne | 63 min |
| Jul 4, 3:54 PM EDT | Severe Thunderstorm Warning | CLE | Portage | 66 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
Detroit, MI (KDTX), launched 12:00Z, 2.8 hours before the alert went out and 60 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
- 849 J/kg
- Mixed-layer CIN
- -66 J/kg
- Mixed-layer LCL
- 1097 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 78 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 8:25 AM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Benzie, Cass, Kalamazoo, Kent and 12 more | 95 min |
| Jul 4, 8:50 AM EDT | Severe Thunderstorm Watch | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 18 more | 3 hr |
| Jul 4, 10:28 AM EDT | Mesoscale Discussion | SPC | Barry, Branch, Calhoun, Clinton, Eaton, Genesee and 20 more | 2 hr |
| Jul 4, 1:04 PM EDT | Mesoscale Discussion | SPC | Berrien, Branch, Calhoun, Cass, Hillsdale, Jackson and 10 more | 116 min |
| Jul 4, 1:48 PM EDT | Mesoscale Discussion | SPC | Berrien | 117 min |
| Jul 4, 2:45 PM EDT | Mesoscale Discussion | SPC | Allen, Ashland, Ashtabula, Auglaize, Columbiana, Crawford and 33 more | 60 min |
| Jul 4, 3:05 PM EDT | Severe Thunderstorm Watch | SPC | Allen, Ashland, Auglaize, Carroll, Champaign, Clark and 47 more | 6 hr |
| Jul 4, 4:29 PM EDT | Mesoscale Discussion | SPC | Allen, Ashland, Auglaize, Belmont, Carroll, Champaign and 43 more | 2 hr |
| Jul 4, 6:07 PM EDT | Mesoscale Discussion | SPC | Brown, Butler, Clermont, Clinton, Greene, Hamilton and 3 more | 53 min |
| Jul 4, 6:50 PM EDT | Severe Thunderstorm Watch | SPC | Brown, Butler, Champaign, Clark, Clermont, Clinton and 13 more | 5 hr |
| Jul 4, 7:29 PM EDT | Mesoscale Discussion | SPC | Allen, Ashland, Auglaize, Belmont, Carroll, Champaign and 51 more | 61 min |
Nearby
Severe Thunderstorm Watches in Ohio, 2003Severe Thunderstorm Watches in Michigan, 2003Severe Thunderstorm Watches in West Virginia, 2003Every severe thunderstorm watch in 2003
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.