Alert archive / Illinois / Severe Thunderstorm Watches in 2000
Severe Thunderstorm Watch 540
The Storm Prediction Center issued this severe thunderstorm watch at Jul 5, 2000, 6:00 PM CDT for 36 counties in Illinois; 33 counties in Missouri. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 5, 2000, 6:00 PM CDT (23:00 UTC)
- Expired
- Jul 5, 2000, 10:00 PM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 69 counties
Adams County, IL, Bond County, IL, Brown County, IL, Calhoun County, IL, Cass County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Fayette County, IL, Greene County, IL, Jasper County, IL, Jersey County, IL, Lawrence County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Menard County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Piatt County, IL, Pike County, IL, Richland County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Shelby County, IL, Adair County, MO, Audrain County, MO, Boone County, MO, Caldwell County, MO, Callaway County, MO, Carroll County, MO, Chariton County, MO, City of Saint Louis, MO, Cooper County, MO, Daviess County, MO, Grundy County, MO, Harrison County, MO, Howard County, MO, Knox County, MO, Lafayette County, MO, Lewis County, MO, Lincoln County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Marion County, MO, Monroe County, MO, Montgomery County, MO, Pike County, MO, Ralls County, MO, Randolph County, MO, Ray County, MO, Saint Charles County, MO, Saint Louis County, MO, Saline County, MO, Shelby County, MO, Sullivan County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 125 km from the middle of the area, began a volume at 23:00 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
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 6:00 PM CDT | Severe Thunderstorm Warning | ILX | Shelby | 60 min |
| Jul 5, 6:01 PM CDT | Severe Thunderstorm Warning | LSX | Fayette | 29 min |
| Jul 5, 6:21 PM CDT | Severe Thunderstorm Warning | ILX | Effingham | 54 min |
| Jul 5, 6:29 PM CDT | Severe Thunderstorm Warning | EAX | Livingston | 31 min |
| Jul 5, 6:33 PM CDT | Severe Thunderstorm Warning | EAX | Carroll, Ray | 57 min |
| Jul 5, 6:34 PM CDT | Severe Thunderstorm Warning | LSX | Fayette | 26 min |
| Jul 5, 6:40 PM CDT | Severe Thunderstorm Warning | EAX | Jackson, Lafayette | 65 min |
| Jul 5, 6:59 PM CDT | Severe Thunderstorm Warning | ILX | Jasper | 61 min |
| Jul 5, 7:06 PM CDT | Severe Thunderstorm Warning | ILX | Clay | 54 min |
| Jul 5, 7:17 PM CDT | Severe Thunderstorm Warning | ILX | Richland | 58 min |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 11.0 hours before the alert went out and 239 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
- 113 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 542 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 |
|---|---|---|---|---|
| Jul 5, 1:00 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Cass, Christian, Fulton, Hancock and 19 more | 5 hr |
| Jul 5, 3:00 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Andrew, Caldwell, Chariton, Daviess, DeKalb and 14 more | 4 hr |
Nearby
Severe Thunderstorm Watches in Illinois, 2000Severe Thunderstorm Watches in Missouri, 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.