On the evening of August 16 a few thunderstorms formed in western Missouri, and caused some powerline damage in Garden City, Missouri, in Cass County. Several large trees, around 12 inches in diameter, were broken in Leeton, Missouri, in Johnson County.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS EAX wrote it up.
On the evening of August 16 a few thunderstorms formed in western Missouri, and caused some powerline damage in Garden City, Missouri, in Cass County. Several large trees, around 12 inches in diameter, were broken in Leeton, Missouri, in Johnson County.
The local office's own words before the first event, 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 the first event at Aug 16, 2:03 PM CST, 3 hours 3 minutes earlier.
AREA FORECAST DISCUSSION National Weather Service Kansas City/Pleasant Hill MO 303 PM CDT Wed Aug 16 2017 .Discussion... Issued at 303 PM CDT WED AUG 16 2017 Main concern this afternoon involves new convective development as long awaited surface cold front begins moving through the area. In contrast to yesterday, confidence is increasing that severe weather will develop in the coming hours as enough clearing has occurred to result in moderate destabilization across the lwr Missouri Vly. Expect this trend to continue this afternoon and early evening as remnant elevated mixed layer plume as noted by warm brightness temperatures on GOES-16 7.34 micron water vapor imagery (see also the 12z Amarillo, TX sounding) continues to advect northeast with time. Deep-layer shear will continue to increase this afternoon as midlevel speed max associated with main trough axis across the Central Plains also moves east with time. BUFKIT soundings from across the area show largely a unidirectional wind profile, with 0-6 km bulk shear values on the order of 35-40 kts. Considering this, along with the ample amounts of buoyancy that appear present, initial development in the form of discrete cells to the west of the KC Metro will support both a large hail and strong wind threat, with activity migrating more towards a linear configuration in response to deep layer shear values remaining largely parallel to the incoming cold frontal boundary. Across southern portions of the fcst area, an isolated tornado threat will also be possible in response to increased helicity near a lingering outflow boundary from this morning's convection. Overall however, this threat appeas most likely well south of the KC Metro, and in reality more likely down in SGF's area. In addition, we did have some pretty efficient rainfall across the area this morning with reports and MRMS storm total estimates suggesting over 2.5" fell across the northeastern Metro, specially over Clay County. Prevailing thought is that this afternoon/evening's activity should be progressive enough to limit a widespread flash flood threat, but trends will have to be monitored for areas that did receive decent rainfall this morning. Precip to quickly come to an end after the 06z time frame from west to east as drier air moves back into the area. This will set the stage for slightly cooler temps tomorrow and the return of dry conditions which should continue through much of Friday. Fcst guidance continues to show redeveloping precip early Saturday morning as a secondary wave of energy sweeps a boundary south across our area during the predawn hours. As a result, morning shwrs/storms appear possible and current chance pops appear reasonable. Beyond this, fcst becomes less uncertain as we head into next week as zonal flow returns to the central U.S. and a series of shortwaves impact the lwr Missouri Vly. Obviously this leads to some concern over Monday's solar eclipse and additional details are provided below. Beyond this, unsettled weather looks to persist through midweek as a boundary stalls south of the area. && .Specifics for the Total Solar Eclipse on August 21st... Issued at 303 PM CDT WED AUG 16 2017 Model projections continue to show an fairly unsettled weather pattern early next week as zonal flow along the northern periphery of a southeastern U.S. ridge impacts the area. Under this configuration, passing shortwave disturbances appear likely, and latest model trends support remnant convection early Monday morning with additional activity possible during the afternoon hours. Considering we're still 4+ days out, a lot can still change, but overall trends this afternoon continue to support the notion that cloud cover will be present to at least some degree over the Lwr Missouri Vly early Monday afternoon. Whether its dense enough to inhibit eclipse viewing remains elusive this far out, and more details will follow in the coming days. && .Aviation...(For the 18Z TAFS through 18Z Thursday Afternoon) Issued at 1236 PM CDT WED AUG 16 2017 Convection expected to initiate along a cold front later this afternoon with impacts expected at all KC area terminals. Expect activity to develop towards the 21-22z time frame, with storms steadily moving east through the early evening hours. With any activity that impacts terminals, expect brief IFR VSBYs due to very heavy rainfall rates. Storms should be start clearing to the east after 00-01z, with VFR conditions then expected through the duration of the fcst cycle. Further north at STJ, a bit more uncertainty exists as to whether storms will impact the airport, but for now decided to play it safe until convective trends can be established this afternoon. Winds out of the southeast between 5-10 kts will shift to the northwest later tonight after frontal passage. && .EAX WATCHES/WARNINGS/ADVISORIES... KS...NONE. MO...NONE. && Discussion...32 Aviation...32 Eclipse...32
Hazardous Weather Outlook National Weather Service Kansas City/Pleasant Hill MO 529 AM CDT Wed Aug 16 2017 KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040- 043>046-053-054-171030- 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- 529 AM CDT Wed Aug 16 2017 This hazardous weather outlook is for northwest...north central and west central Missouri...as well as extreme eastern Kansas. .DAY ONE...Today and Tonight Thunderstorms today into tonight will have the potential to become strong to severe across much of the area. Hazards with any storm that develops includes dangerous and frequent cloud-to-ground lightning, moderate to heavy rainfall, and gusty winds. Should some of these storms become strong to severe, the potential exists for damaging winds, hail, and localized flooding. A tornadic threat, while low, does exist as well. More detailed information can be accessed at... https://www.weather.gov/eax/hwo .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Thunderstorms, potentially strong, reappear on Friday. More detailed information can be accessed at... https://www.weather.gov/eax/hwo
Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
1256 PM CDT WED AUG 16 2017
MOZ045-046-161830-
Pettis-Cooper-
1256 PM CDT WED AUG 16 2017
...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN PETTIS AND
SOUTHWESTERN COOPER COUNTIES...
At 1256 PM CDT, a strong thunderstorm was located 8 miles north of
Cole Camp, or 8 miles south of Sedalia, moving northeast at 35 mph.
Winds in excess of 40 mph are possible with this storm.
Locations impacted include...
Smithton and Otterville.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
LAT...LON 3869 9306 3853 9307 3854 9328 3862 9333
3878 9300 3869 9292
TIME...MOT...LOC 1756Z 244DEG 30KT 3858 9319
GranaThe Pleasant Hill radar (KEAX), 29 km away, was scanning. The volume nearest the first event began at 23:07 UTC.
2 thunderstorm wind. Local standard time, as filed.
Power lines were down in and around Garden City.
Several 12+ inch diameter trees of unknown condition were reported down in and around Leeton.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2017Every state in 2017This day in weather historyWarnings in Missouri, August 2017
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 718619, 718620.