Alert archive / Michigan / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 175
The Storm Prediction Center issued this severe thunderstorm watch at May 9, 2004, 6:50 PM CDT for 4 states. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- May 9, 2004, 6:50 PM CDT (23:50 UTC)
- Expired
- May 9, 2004, 11:00 PM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 52 counties
Cook County, IL, DuPage County, IL, Grundy County, IL, Kankakee County, IL, Kendall County, IL, LaSalle County, IL, Marshall County, IL, Putnam County, IL, Will County, IL, Allen County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Jasper County, IN, Kosciusko County, IN, LaGrange County, IN, Lake County, IN, LaPorte County, IN, Marshall County, IN, Noble County, IN, Porter County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Whitley County, IN, Allegan County, MI, Barry County, MI, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Eaton County, MI, Hillsdale County, MI, Ingham County, MI, Jackson County, MI, Kalamazoo County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Monroe County, MI, Oakland County, MI, Saint Joseph County, MI, Van Buren County, MI, Washtenaw County, MI, Wayne County, MI, Defiance County, OH, Fulton County, OH, Henry County, OH, Lucas County, OH, Paulding County, OH, Williams County, OH
The radar
The Northern Indiana radar (KIWX), 77 km from the middle of the area, began a volume at 23:34 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
5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 7:02 PM CDT | Severe Thunderstorm Warning | LOT | Jasper | 43 min |
| May 9, 7:08 PM CDT | Severe Thunderstorm Warning | LOT | Lake, Porter | 37 min |
| May 9, 7:13 PM CDT | Flash Flood Warning | LOT | Kane, Kendall, Will | 3 hr |
| May 9, 7:15 PM CDT | Severe Thunderstorm Warning | LOT | DuPage, Kendall, Will | 45 min |
| May 9, 7:47 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Will | 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
Detroit, MI (KDTX), launched 12:00Z, 11.8 hours before the alert went out and 278 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 834 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 68 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 |
|---|---|---|---|---|
| May 8, 9:55 PM CDT | Mesoscale Discussion | SPC | Boone, Cook, Lake, McHenry, Stephenson, Winnebago | 2 hr |
| May 9, 1:22 AM CDT | Mesoscale Discussion | SPC | Hancock | 23 min |
| May 9, 11:48 AM CDT | Mesoscale Discussion | SPC | Boone, Cook, DeKalb, DuPage, Kane, Lake and 4 more | 2 hr |
| May 9, 12:55 PM CDT | Severe Thunderstorm Watch | SPC | Cook, DuPage, Lake, Will | 6 hr |
| May 9, 2:46 PM CDT | Mesoscale Discussion | SPC | Cook, Lake | 89 min |
| May 9, 4:46 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, Grundy, Henry and 10 more | 59 min |
| May 9, 5:17 PM CDT | Mesoscale Discussion | SPC | Cook, DuPage, Lake, Will | 88 min |
| May 8, 7:16 PM CDT | Mesoscale Discussion | SPC | Elkhart, Kosciusko, LaGrange, Marshall, Noble, Saint Joseph and 1 more | 119 min |
| May 9, 9:35 AM CDT | Mesoscale Discussion | SPC | Steuben | 55 min |
| May 8, 8:46 PM CDT | Mesoscale Discussion | SPC | Clinton, Eaton, Genesee, Gratiot, Ingham, Ionia and 8 more | 119 min |
| May 9, 6:15 PM CDT | Severe Thunderstorm Watch | SPC | Gogebic, Ontonagon | 8 hr |
Nearby
Severe Thunderstorm Watches in Michigan, 2004Severe Thunderstorm Watches in Indiana, 2004Severe Thunderstorm Watches in Illinois, 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.