Alert archive / Kansas / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 747
The Storm Prediction Center issued this severe thunderstorm watch at Sep 20, 2001, 5:45 PM CDT for Hancock County, Illinois; 42 counties in Kansas; 36 counties in Missouri. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 20, 2001, 5:45 PM CDT (22:45 UTC)
- Expired
- Sep 20, 2001, 11:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 79 counties
Hancock County, IL, Allen County, KS, Anderson County, KS, Atchison County, KS, Barber County, KS, Bourbon County, KS, Brown County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Coffey County, KS, Comanche County, KS, Cowley County, KS, Doniphan County, KS, Douglas County, KS, Elk County, KS, Franklin County, KS, Geary County, KS, Greenwood County, KS, Harper County, KS, Harvey County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Kingman County, KS, Leavenworth County, KS, Linn County, KS, Lyon County, KS, Marion County, KS, McPherson County, KS, Miami County, KS, Montgomery County, KS, Morris County, KS, Neosho County, KS, Osage County, KS, Reno County, KS, Sedgwick County, KS, Shawnee County, KS, Sumner County, KS, Wabaunsee County, KS, Wilson County, KS, Woodson County, KS, Wyandotte County, KS, Adair County, MO, Andrew County, MO, Bates County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clark County, MO, Clay County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Jackson County, MO, Johnson County, MO, Knox County, MO, Lafayette County, MO, Lewis County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Nodaway County, MO, Platte County, MO, Putnam County, MO, Ray County, MO, Saline County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, Sullivan County, MO, Worth County, MO
The radar
The Topeka radar (KTWX), 63 km from the middle of the area, began a volume at 22:46 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
15 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 6:06 PM CDT | Severe Thunderstorm Warning | EAX | Carroll, Ray | 39 min |
| Sep 20, 6:24 PM CDT | Severe Thunderstorm Warning | EAX | Chariton, Saline | 51 min |
| Sep 20, 6:24 PM CDT | Severe Thunderstorm Warning | EAX | Lafayette | 51 min |
| Sep 20, 6:26 PM CDT | Severe Thunderstorm Warning | TOP | Jefferson | 19 min |
| Sep 20, 6:29 PM CDT | Severe Thunderstorm Warning | LSX | Knox | 46 min |
| Sep 20, 6:32 PM CDT | Tornado Warning | EAX | Andrew, Buchanan | 43 min |
| Sep 20, 6:43 PM CDT | Severe Thunderstorm Warning | DVN | Scotland | 62 min |
| Sep 20, 6:44 PM CDT | Severe Thunderstorm Warning | EAX | Leavenworth | 46 min |
| Sep 20, 6:56 PM CDT | Severe Thunderstorm Warning | EAX | Miami | 49 min |
| Sep 20, 6:57 PM CDT | Severe Thunderstorm Warning | EAX | Clinton, DeKalb | 48 min |
| Sep 20, 7:17 PM CDT | Severe Thunderstorm Warning | EAX | Schuyler | 43 min |
| Sep 20, 7:31 PM CDT | Severe Thunderstorm Warning | EAX | Johnson | 59 min |
| Sep 20, 7:32 PM CDT | Severe Thunderstorm Warning | EAX | Leavenworth | 28 min |
| Sep 20, 7:48 PM CDT | Severe Thunderstorm Warning | DVN | Scotland | 27 min |
| Sep 20, 8:34 PM CDT | Severe Thunderstorm Warning | EAX | Adair, Sullivan | 56 min |
The nearest sounding before it
Topeka, KS (KTOP), launched 12:00Z, 10.8 hours before the alert went out and 75 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
- 773 J/kg
- Mixed-layer CIN
- -197 J/kg
- Mixed-layer LCL
- 1179 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 258 m²/s²
- 0-3 km storm-relative helicity
- 314 m²/s²
- Significant tornado parameter
- 0.0
- 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 |
|---|---|---|---|---|
| Sep 20, 5:15 PM CDT | Severe Thunderstorm Watch | SPC | Carroll, Henderson, Jo Daviess, Mercer, Rock Island, Stephenson and 1 more | 6 hr |
| Sep 20, 6:45 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Cass, Christian, DeWitt and 18 more | 4 hr |
| Sep 20, 3:00 PM CDT | Severe Thunderstorm Watch | SPC | Atchison, Holt, Nodaway, Worth | 5 hr |
Nearby
Severe Thunderstorm Watches in Kansas, 2001Severe Thunderstorm Watches in Missouri, 2001Severe Thunderstorm Watches in Illinois, 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; radar from the NEXRAD Level II archive.