Alert archive / Kansas / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 283, NWS Kansas City, MO
NWS Kansas City, MO issued this severe thunderstorm warning at Aug 20, 2010, 4:42 PM CDT for Leavenworth County, Kansas. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 20, 2010, 4:42 PM CDT (21:42 UTC)
- Expired
- Aug 20, 2010, 5:15 PM CDT
- In force
- 33 min
- Issued by
- NWS Kansas City, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Leavenworth County, KS
The radar
The Pleasant Hill radar (KEAX), 80 km from the middle of the area, began a volume at 21:42 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 20, 4:26 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Topeka, KS (KTOP), launched 12:00Z, 9.7 hours before the alert went out and 56 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
- 1657 J/kg
- Mixed-layer CIN
- -101 J/kg
- Mixed-layer LCL
- 1406 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Kansas City, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 20, 4:12 PM CDT, 30 minutes earlier.
Area forecast discussion, Aug 20, 4:12 PM CDT, 30 minutes before
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HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO 1246 PM CDT FRI AUG 20 2010 KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040- 043>046-053-054-211800- ATCHISON KS-MIAMI-LINN KS-DONIPHAN-LEAVENWORTH-WYANDOTTE-JOHNSON KS- ATCHISON MO-NODAWAY-WORTH-GENTRY-HARRISON-MERCER-PUTNAM-SCHUYLER- HOLT-ANDREW-DE KALB-DAVIESS-GRUNDY-SULLIVAN-ADAIR-BUCHANAN-CLINTON- CALDWELL-LIVINGSTON-LINN MO-MACON-PLATTE-CLAY-RAY-CARROLL-CHARITON- RANDOLPH-JACKSON-LAFAYETTE-SALINE-HOWARD-CASS-JOHNSON MO-PETTIS- COOPER-BATES-HENRY- 1246 PM CDT FRI AUG 20 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST...NORTH CENTRAL AND WEST CENTRAL MISSOURI...AS WELL AS EXTREME EASTERN KANSAS. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A CHANCE OF SEVERE THUNDERSTORMS FROM THIS AFTERNOON THROUGH LATE THIS EVENING ACROSS PORTIONS OF NORTHEASTERN KANSAS THROUGH WEST CENTRAL MISSOURI AND INTO NORTHEAST AND CENTRAL MISSOURI. ONGOING THUNDERSTORM ACTIVITY IN NORTHEAST KANSAS IS EXPECTED TO GAIN STRENGTH THIS AFTERNOON AS IT MOVES INTO A MORE UNSTABLE AIRMASS ACROSS PORTIONS OF NORTHWESTERN AND NORTHERN MISSOURI. ADDITIONAL THUNDERSTORMS MAY DEVELOP ON THE SOUTHERN END OF THIS LINE AS IT TRACKS TO THE EAST. THE PRIMARY HAZARDS WITH ANY OF THESE STORMS WILL BE FROM DAMAGING WINDS...LARGE HAIL AND LOCALLY HEAVY RAINFALL. THE THUNDERSTORMS MAY THEN GRADUALLY ORGANIZE INTO A LARGER SQUALL LINE OR COMPLEX DURING THE EVENING HOURS...WITH DAMAGING WINDS AND HEAVY RAINFALL POSSIBLE ACROSS THE CENTRAL AND EASTERN PORTIONS OF MISSOURI. THUNDERSTORMS MAY TEMPORARILY STALL OVER SOME LOCATIONS OF CENTRAL AND NORTHEAST MISSOURI THIS EVENING...WITH THE POTENTIAL FOR LOCALIZED FLOODING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED LATER THIS AFTERNOON AND THIS EVENING. CDB
In the hours before
Special weather statement, Aug 20, 3:06 PM CDT, 1 hour 36 minutes before
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</html>The office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 1:03 PM CDT | Severe Thunderstorm Warning | EAX | Buchanan, Platte | 42 min |
| Aug 20, 1:16 PM CDT | Severe Thunderstorm Warning | EAX | Platte | 44 min |
| Aug 20, 1:38 PM CDT | Severe Thunderstorm Warning | EAX | Buchanan, Caldwell, Clay, Clinton, Daviess, DeKalb and 2 more | 37 min |
| Aug 20, 1:45 PM CDT | Severe Thunderstorm Warning | EAX | Clay, Jackson, Platte, Ray | 35 min |
| Aug 20, 2:06 PM CDT | Tornado Warning | EAX | Clay, Clinton, Ray | 24 min |
| Aug 20, 2:16 PM CDT | Severe Thunderstorm Warning | EAX | Caldwell, Daviess, DeKalb, Livingston | 29 min |
| Aug 20, 2:27 PM CDT | Severe Thunderstorm Warning | EAX | Caldwell, Carroll, Lafayette, Ray | 33 min |
| Aug 20, 2:37 PM CDT | Special Weather Statement | EAX | Daviess, Grundy | 38 min |
| Aug 20, 2:50 PM CDT | Special Weather Statement | EAX | Randolph | 40 min |
| Aug 20, 2:59 PM CDT | Special Weather Statement | EAX | Clay | 46 min |
| Aug 20, 3:06 PM CDT | Special Weather Statement | EAX | Carroll, Ray | 39 min |
| Aug 20, 3:11 PM CDT | Special Weather Statement | EAX | Mercer | 49 min |
| Aug 20, 3:38 PM CDT | Special Weather Statement | EAX | Chariton, Linn, Sullivan | 37 min |
| Aug 20, 4:02 PM CDT | Special Weather Statement | EAX | Adair, Macon, Randolph, Schuyler | 43 min |
| Aug 20, 4:30 PM CDT | Special Weather Statement | EAX | Macon, Randolph, Schuyler | 30 min |
| Aug 20, 4:44 PM CDT | Severe Thunderstorm Warning | EAX | Cooper, Howard, Randolph | 31 min |
| Aug 20, 4:50 PM CDT | Special Weather Statement | EAX | Caldwell, Livingston | 25 min |
| Aug 20, 5:15 PM CDT | Special Weather Statement | EAX | Caldwell, Livingston | 45 min |
| Aug 20, 5:25 PM CDT | River Flood Warning | EAX | Andrew, Buchanan | 16 hr |
| Aug 20, 5:44 PM CDT | Special Weather Statement | EAX | Jackson | 31 min |
| Aug 20, 6:19 PM CDT | Special Weather Statement | EAX | Ray | 26 min |
| Aug 20, 6:49 PM CDT | Flash Flood Warning | EAX | Randolph | 6 hr |
| Aug 20, 5:12 PM CDT | Areal Flood Advisory | EAX | Doniphan | 4 hr |
| Aug 20, 5:19 PM CDT | Special Weather Statement | EAX | Wyandotte | 41 min |
Nearby
Severe Thunderstorm Warnings in Kansas, 2010Every severe thunderstorm warning in 2010
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.