Alert archive / Kansas / Tornado Watches in 2001
Tornado Watch 718
The Storm Prediction Center issued this tornado watch at Sep 7, 2001, 6:00 PM CDT for 22 counties in Kansas; 21 counties in Missouri; Richardson County, Nebraska. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 7, 2001, 6:00 PM CDT (23:00 UTC)
- Expired
- Sep 7, 2001, 11:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 44 counties
Atchison County, KS, Brown County, KS, Chase County, KS, Doniphan County, KS, Douglas County, KS, Franklin County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Lyon County, KS, Marion County, KS, Miami County, KS, Morris County, KS, Nemaha County, KS, Osage County, KS, Pottawatomie County, KS, Riley County, KS, Shawnee County, KS, Wabaunsee County, KS, Wyandotte County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Caldwell 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, Livingston County, MO, Mercer County, MO, Nodaway County, MO, Platte County, MO, Putnam County, MO, Ray County, MO, Sullivan County, MO, Worth County, MO, Richardson County, NE
The radar
The Topeka radar (KTWX), 52 km from the middle of the area, began a volume at 23:01 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
17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 6:15 PM CDT | Tornado Warning | TOP | Pottawatomie, Riley | 30 min |
| Sep 7, 6:46 PM CDT | Severe Thunderstorm Warning | OAX | Richardson | 44 min |
| Sep 7, 6:54 PM CDT | Severe Thunderstorm Warning | EAX | Atchison | 66 min |
| Sep 7, 7:02 PM CDT | Severe Thunderstorm Warning | TOP | Franklin, Osage | 28 min |
| Sep 7, 7:02 PM CDT | Severe Thunderstorm Warning | TOP | Lyon | 28 min |
| Sep 7, 7:30 PM CDT | Severe Thunderstorm Warning | TOP | Anderson, Douglas, Franklin, Osage | 30 min |
| Sep 7, 7:30 PM CDT | Severe Thunderstorm Warning | TOP | Shawnee | 30 min |
| Sep 7, 7:32 PM CDT | Severe Thunderstorm Warning | EAX | Johnson, Miami | 43 min |
| Sep 7, 7:44 PM CDT | Severe Thunderstorm Warning | TOP | Jefferson | 31 min |
| Sep 7, 7:53 PM CDT | Severe Thunderstorm Warning | EAX | Leavenworth, Wyandotte | 67 min |
| Sep 7, 8:03 PM CDT | Severe Thunderstorm Warning | EAX | Jackson | 57 min |
| Sep 7, 8:14 PM CDT | Severe Thunderstorm Warning | EAX | Clay, Platte | 46 min |
| Sep 7, 8:15 PM CDT | Severe Thunderstorm Warning | EAX | Johnson, Miami | 45 min |
| Sep 7, 8:34 PM CDT | Severe Thunderstorm Warning | EAX | Caldwell | 41 min |
| Sep 7, 8:43 PM CDT | Severe Thunderstorm Warning | EAX | Ray | 62 min |
| Sep 7, 9:31 PM CDT | Severe Thunderstorm Warning | EAX | Livingston | 44 min |
| Sep 7, 9:46 PM CDT | Severe Thunderstorm Warning | EAX | Grundy, Sullivan | 59 min |
The nearest sounding before it
Topeka, KS (KTOP), launched 12:00Z, 11.0 hours before the alert went out and 20 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
- 1545 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 658 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 141 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 4.1
The text
As transmitted, in the capitals the NWS used until 2016.
957 WWUS9 KMKC 072301 SEL8 MKC WW 072253 KSZ000-MOZ000-NEZ000-080400- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 718 STORM PREDICTION CENTER NORMAN OK 553 PM CDT FRI SEP 7 2001 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF NORTHERN AND EASTERN KANSAS NORTHERN AND WESTERN MISSOURI EXTREME SOUTHEAST NEBRASKA EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 600 PM UNTIL 1100 PM CDT. TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 80 STATUTE MILES EAST AND WEST OF A LINE FROM 5 MILES SOUTH SOUTHWEST OF EMPORIA KANSAS TO 30 MILES NORTHWEST OF SPICKARD MISSOURI. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES SEVERE THUNDERSTORM WATCH NUMBER 714. WATCH NUMBER 714 WILL NOT BE IN EFFECT AFTER 600 PM CDT. CONTINUE...WW 715...WW 716...WW 717... DISCUSSION...SUPERCELLS EXPECTED TO CONTINUE DEVELOPING OVER WATCH AREA AS SW KS UPPER VORT EJECTS NEWD THIS EVENING. ABSENCE OF STRONG LOW LEVEL LINEAR FORCING HAS ALLOWED INDIVIDUAL STORMS TO REMAIN DISTINCT. SURFACE PRESSURE FALLS CONCENTRATED OVER SE KS ATTM SUGGEST THAT LOW LEVEL WINDS WILL REMAIN SOMEWHAT BACKED AHEAD OF EJECTING UPPER DISTURBANCE. COUPLED WITH LOW LCLS...SOME THREAT WILL EXIST FOR ISOLATED TORNADOES IN ADDITION TO LARGE HAIL/HIGH WINDS. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 24035. ...CORFIDI 403,0923 381,0944 381,0974 403,0953
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 1:30 AM CDT | Severe Thunderstorm Watch | SPC | Cloud, Jewell, Mitchell, Osborne, Phillips, Republic and 2 more | 6 hr |
| Sep 7, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | Atchison, Brown, Chase, Clay, Dickinson, Doniphan and 18 more | 6 hr |
| Sep 7, 3:15 PM CDT | Tornado Watch | SPC | Butler, Chautauqua, Cowley, Elk, Greenwood, Harper and 5 more | 6 hr |
| Sep 7, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | Clay, Cloud, Dickinson, Ellis, Ellsworth, Geary and 15 more | 3 hr |
| Sep 6, 11:00 PM CDT | Severe Thunderstorm Watch | SPC | Antelope, Blaine, Boyd, Buffalo, Custer, Dawson and 16 more | 3 hr |
Nearby
Tornado Watches in Kansas, 2001Tornado Watches in Missouri, 2001Tornado Watches in Nebraska, 2001Every tornado 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.