Alert archive / Illinois / Severe Thunderstorm Watches in 2000
Severe Thunderstorm Watch 248
The Storm Prediction Center issued this severe thunderstorm watch at May 8, 2000, 8:15 PM CDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- May 8, 2000, 8:15 PM CDT (01:15 UTC)
- Expired
- May 9, 2000, 1:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 41 counties
Des Moines County, IA, Scott County, IA, Boone County, IL, Bureau County, IL, Carroll County, IL, DeKalb County, IL, DuPage County, IL, Grundy County, IL, Henderson County, IL, Henry County, IL, Kane County, IL, Kendall County, IL, Knox County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, Marshall County, IL, McHenry County, IL, Mercer County, IL, Ogle County, IL, Peoria County, IL, Putnam County, IL, Rock Island County, IL, Stark County, IL, Stephenson County, IL, Warren County, IL, Whiteside County, IL, Winnebago County, IL, Woodford County, IL, Muskegon County, MI, Dodge County, WI, Green County, WI, Jefferson County, WI, Kenosha County, WI, Milwaukee County, WI, Ozaukee County, WI, Racine County, WI, Rock County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI
The radar
The Quad Cities radar (KDVN), 93 km from the middle of the area, began a volume at 01:17 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
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 8:27 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine | 48 min |
| May 8, 8:55 PM CDT | Severe Thunderstorm Warning | DVN | Warren | 50 min |
| May 8, 8:58 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Knox | 47 min |
| May 8, 9:09 PM CDT | Severe Thunderstorm Warning | MKX | Waukesha | 13 hr |
| May 8, 9:15 PM CDT | Tornado Warning | DVN | Henry | 30 min |
| May 8, 9:17 PM CDT | Severe Thunderstorm Warning | MKX | Racine, Walworth | 43 min |
| May 8, 9:18 PM CDT | Severe Thunderstorm Warning | LOT | Kane | 42 min |
| May 8, 9:25 PM CDT | Severe Thunderstorm Warning | ILX | Peoria | 65 min |
| May 8, 9:40 PM CDT | Severe Thunderstorm Warning | ILX | Marshall, Stark | 65 min |
| May 8, 9:40 PM CDT | Severe Thunderstorm Warning | GRR | Muskegon | 35 min |
| May 8, 10:11 PM CDT | Severe Thunderstorm Warning | ILX | Woodford | 64 min |
| May 8, 10:44 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, LaSalle, Livingston | 46 min |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 1.3 hours before the alert went out and 86 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
- 609 J/kg
- Mixed-layer CIN
- -160 J/kg
- Mixed-layer LCL
- 1116 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 229 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 12.3
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 |
|---|---|---|---|---|
| May 8, 10:30 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Christian, Coles, Cook, DeWitt, Douglas and 19 more | 6 hr |
| May 9, 12:00 AM CDT | Severe Thunderstorm Watch | SPC | Calhoun, Jersey, Monroe | 6 hr |
| May 9, 2:30 PM CDT | Severe Thunderstorm Watch | SPC | Clark, Clay, Coles, Crawford, Cumberland, Douglas and 19 more | 7 hr |
| May 9, 4:45 PM CDT | Tornado Watch | SPC | Alexander, Hardin, Johnson, Massac, Pope, Pulaski and 1 more | 5 hr |
| May 8, 9:30 PM CDT | Severe Thunderstorm Watch | SPC | Allegan, Arenac, Barry, Bay, Clare, Clinton and 26 more | 6 hr |
| May 9, 12:45 AM CDT | Severe Thunderstorm Watch | SPC | Branch, Calhoun, Hillsdale, Jackson, Lenawee, Monroe and 3 more | 5 hr |
| May 9, 5:30 PM CDT | Tornado Watch | SPC | Barry, Branch, Calhoun, Clinton, Eaton, Genesee and 14 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Illinois, 2000Severe Thunderstorm Watches in Wisconsin, 2000Severe Thunderstorm Watches in Iowa, 2000Every severe thunderstorm watch in 2000
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.