Alert archive / Illinois / Severe Thunderstorm Watches in 2000
Severe Thunderstorm Watch 244
The Storm Prediction Center issued this severe thunderstorm watch at May 8, 2000, 7:30 AM CDT for 21 counties in Illinois; Clinton County, Jackson County, Scott County, Iowa; 11 counties in Wisconsin. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- May 8, 2000, 7:30 AM CDT (12:30 UTC)
- Expired
- May 8, 2000, 12:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 35 counties
Clinton County, IA, Jackson County, IA, Scott County, IA, Boone County, IL, Bureau County, IL, Carroll County, IL, DeKalb County, IL, DuPage County, IL, Grundy County, IL, Henry County, IL, Jo Daviess County, IL, Kane County, IL, Kendall County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, McHenry County, IL, Mercer County, IL, Ogle County, IL, Putnam County, IL, Rock Island County, IL, Stephenson County, IL, Whiteside County, IL, Winnebago County, IL, Dane County, WI, Green County, WI, Iowa County, WI, Jefferson County, WI, Kenosha County, WI, Lafayette County, WI, Milwaukee County, WI, Racine County, WI, Rock County, WI, Walworth County, WI, Waukesha County, WI
The radar
The Quad Cities radar (KDVN), 90 km from the middle of the area, began a volume at 12:32 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
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 7:33 AM CDT | Severe Thunderstorm Warning | MKX | Green, Lafayette | 57 min |
| May 8, 7:36 AM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 54 min |
| May 8, 7:41 AM CDT | Flash Flood Warning | DVN | Jo Daviess | 3 hr |
| May 8, 8:18 AM CDT | Severe Thunderstorm Warning | DVN | Stephenson | 17 min |
| May 8, 8:22 AM CDT | Severe Thunderstorm Warning | MKX | Green, Rock | 23 min |
| May 8, 8:28 AM CDT | Severe Thunderstorm Warning | MKX | Dane | 47 min |
| May 8, 8:43 AM CDT | Severe Thunderstorm Warning | MKX | Rock | 32 min |
| May 8, 8:46 AM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dodge, Jefferson | 44 min |
| May 8, 8:46 AM CDT | Severe Thunderstorm Warning | MKX | Walworth | 44 min |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 0.5 hours before the alert went out and 84 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
- 862 J/kg
- Mixed-layer CIN
- -154 J/kg
- Mixed-layer LCL
- 823 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 125 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -1.5
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, 2:00 PM CDT | Tornado Watch | SPC | Adams, Boone, Brown, Bureau, Carroll, Cass and 36 more | 6 hr |
| May 8, 6:45 PM CDT | Tornado Watch | SPC | Adams, Brown, Cass, Fulton, Hancock, McDonough and 7 more | 5 hr |
| May 7, 10:00 PM CDT | Severe Thunderstorm Watch | SPC | Buena Vista, Cherokee, Clay, Dickinson, Emmet, Ida and 9 more | 5 hr |
| May 8, 1:00 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Audubon, Boone, Buena Vista, Butler, Calhoun and 33 more | 5 hr |
| May 7, 9:00 PM CDT | Severe Thunderstorm Watch | SPC | Barron, Buffalo, Dunn, Pepin, Pierce, Polk and 1 more | 6 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.