Alert archive / Illinois / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 622
The Storm Prediction Center issued this severe thunderstorm watch at Jul 24, 2001, 10:00 PM CDT for 28 counties in Illinois; 25 counties in Iowa; 20 counties in Missouri. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 24, 2001, 10:00 PM CDT (03:00 UTC)
- Expired
- Jul 25, 2001, 3:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 73 counties
Adair County, IA, Adams County, IA, Appanoose County, IA, Clarke County, IA, Davis County, IA, Decatur County, IA, Des Moines County, IA, Henry County, IA, Jefferson County, IA, Keokuk County, IA, Lee County, IA, Louisa County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Monroe County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA, Van Buren County, IA, Wapello County, IA, Warren County, IA, Washington County, IA, Wayne County, IA, Adams County, IL, Brown County, IL, Cass County, IL, DeWitt County, IL, Fulton County, IL, Grundy County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, Knox County, IL, LaSalle County, IL, Livingston County, IL, Logan County, IL, Macon County, IL, Marshall County, IL, Mason County, IL, McDonough County, IL, McLean County, IL, Menard County, IL, Mercer County, IL, Peoria County, IL, Piatt County, IL, Putnam County, IL, Schuyler County, IL, Stark County, IL, Tazewell County, IL, Warren County, IL, Woodford County, IL, Adair County, MO, Andrew County, MO, Clark County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Knox County, MO, Lewis County, MO, Linn County, MO, Macon County, MO, Marion County, MO, Mercer County, MO, Nodaway County, MO, Putnam County, MO, Schuyler County, MO, Scotland County, MO, Sullivan County, MO, Worth County, MO
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 |
|---|---|---|---|---|
| Jul 24, 10:03 PM CDT | Severe Thunderstorm Warning | EAX | Putnam | 42 min |
| Jul 24, 10:15 PM CDT | Severe Thunderstorm Warning | DMX | Davis | 45 min |
| Jul 24, 10:24 PM CDT | Severe Thunderstorm Warning | EAX | Grundy, Sullivan | 51 min |
| Jul 24, 10:34 PM CDT | Severe Thunderstorm Warning | EAX | Harrison | 56 min |
| Jul 24, 10:45 PM CDT | Severe Thunderstorm Warning | EAX | Gentry, Nodaway, Worth | 45 min |
| Jul 24, 11:18 PM CDT | Tornado Warning | LOT | LaSalle | 32 min |
| Jul 24, 11:30 PM CDT | Severe Thunderstorm Warning | EAX | Gentry | 45 min |
| Jul 24, 11:43 PM CDT | Severe Thunderstorm Warning | EAX | Grundy, Mercer | 62 min |
| Jul 25, 12:09 AM CDT | Severe Thunderstorm Warning | EAX | Adair | 36 min |
| Jul 25, 12:17 AM CDT | Severe Thunderstorm Warning | LSX | Knox | 43 min |
| Jul 25, 1:10 AM CDT | Severe Thunderstorm Warning | EAX | Andrew, Holt, Nodaway | 50 min |
| Jul 25, 1:19 AM CDT | Severe Thunderstorm Warning | EAX | Macon, Randolph | 41 min |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 3.0 hours before the alert went out and 176 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
- 3214 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 835 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 119 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 4.1
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 24, 11:30 PM CDT | Severe Thunderstorm Watch | SPC | Page | 6 hr |
| Jul 25, 12:00 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Andrew, Audrain, Boone, Buchanan, Caldwell and 34 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Illinois, 2001Severe Thunderstorm Watches in Iowa, 2001Severe Thunderstorm Watches in Missouri, 2001Every severe thunderstorm watch in 2001
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.