On the evening of September 16, a strong storm moved through the Chillicothe area. There was some damage to a chicken coop and a pole barn in the area, with estimated 60 to 70 mph winds.
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 September 16, a strong storm moved through the Chillicothe area. There was some damage to a chicken coop and a pole barn in the area, with estimated 60 to 70 mph winds.
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 Sep 16, 2:26 PM CST, 2 hours 4 minutes earlier.
AREA FORECAST DISCUSSION National Weather Service Kansas City/Pleasant Hill MO 326 PM CDT Sat Sep 16 2017 .Discussion... Issued at 326 PM CDT SAT SEP 16 2017 A band of showers and thunderstorms has developed just west of I-35 this afternoon where the atmosphere has acquired some weak/moderate instability. This activity has developed near a weak mid-level impulse moving into western Missouri, but should gradually weaken over the next few hours as it encounters a deeper low-level stable layer over western and central Missouri. Meanwhile the primary surface cold front is approaching the far northwest tip of Missouri where a rather sharp temperature gradient is separating mid/upper 80s over KS and MO from mid/lower 60s across Nebraska. This boundary will slowly make its way into northwest Missouri this evening and eventually reach the I-35 corridor around 3 AM. The band of rain and storms that has developed out ahead of the front is stabilizing the airmass over KS and MO somewhat, but clearing and resulting destabilization further west could still allow for a few stronger storms across areas from near Topeka to just north of St Joseph later this afternoon and this evening. Shear is rather weak so brief gusts to 50-60 mph and perhaps some marginally severe hail will be the primary threats across these areas. Storms may increase in coverage overnight as they push into eastern KS and western/northern MO and become aided by a stronger midlevel wave to the north, but with instability becoming elevated they will likely lose some of their punch. Still, it wouldn't be surprising to see some hail approaching an inch in a few of the stronger storms through midnight or so, along with some locally heavy rainfall. The front will become stalled just south of US 50 on Sunday, and while a few storms are possible near this boundary through the afternoon, the primary focus for additional convection won't arrive until after dark Sunday evening when a secondary mid-level impulse will move in from the southwest. Some locally heavy rainfall is again possible with this activity especially near the slowly retreating boundary, but the lack of a strong low-level jet should keep the overall heavy rain/flash flood threat on the low side. A series of weak upper-level impulses will continue to stream into the area through Monday evening keeping rain chances around through at least early Tuesday. Tuesday evening appears to be the most likely time to see a dry period before another cold front brings another potential round of storms to the area on Wednesday and into early Thursday. && .Aviation...(For the 18Z TAFS through 18Z Sunday Afternoon) Issued at 1230 PM CDT SAT SEP 16 2017 Complex aviation forecast setting up for the next 18 to 24 hours. Warm and humid airmass ahead of an advancing cold front is helping to produce scattered showers and storms across northeastern KS and northwestern MO. As the front moves southeast later this afternoon and this evening, showers and storms should become a more widespread. Have added a tempo group to try and capture the most likely timing for storms into the terminals. In the wake of the storms, showers or an area of rain is possible and as cooler air moves in behind the front, ceilings will likely become low MVFR and possibly IFR. && .EAX WATCHES/WARNINGS/ADVISORIES... KS...NONE. MO...NONE. && Discussion...Hawblitzel Aviation...CDB
Hazardous Weather Outlook National Weather Service Kansas City/Pleasant Hill MO 338 AM CDT Sat Sep 16 2017 KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040- 043>046-053-054-170845- 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- 338 AM CDT Sat Sep 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 A few strong to isolated severe storms will be possible this evening west of Interstate 35. The main threats will be for large hail and damaging winds. .DAYS TWO THROUGH SEVEN...Sunday through Friday Thunderstorms are expected Sunday however, severe weather is not anticipated. Another round of thunderstorms are expected Monday afternoon. A few strong to isolated severe storms will be possible. Several rounds of showers and thunderstorms will be possible during the upcoming work week. Flooding may become a concern. More detailed information can be accessed at... https://www.weather.gov/eax/hwo
Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
345 PM CDT SAT SEP 16 2017
KSZ103-MOZ028-162115-
Leavenworth KS-Platte MO-
345 PM CDT SAT SEP 16 2017
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN LEAVENWORTH AND
NORTHEASTERN PLATTE COUNTIES UNTIL 415 PM CDT...
At 345 PM CDT, Doppler radar was tracking a strong thunderstorm over
Leavenworth, moving northeast at 35 mph.
Dime size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Leavenworth, Lansing, Platte City, Weston, Dearborn, Camden Point,
Tracy, Farley, Fort Leavenworth, Stillings, Beverly, Hoover and East
Leavenworth.
This includes the following highways...
Interstate 29 between mile markers 14 and 30.
Interstate 435 between mile markers 28 and 34.
LAT...LON 3953 9481 3953 9472 3939 9460 3935 9460
3922 9500 3934 9510
TIME...MOT...LOC 2045Z 239DEG 32KT 3930 9496
LaflinSpecial Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
500 PM CDT SAT SEP 16 2017
MOZ014-015-022-023-031-162230-
Grundy MO-Carroll MO-Daviess MO-Livingston MO-Caldwell MO-
500 PM CDT SAT SEP 16 2017
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN DAVIESS...GRUNDY...
NORTHWESTERN CARROLL...EASTERN CALDWELL AND LIVINGSTON COUNTIES UNTIL
530 PM CDT...
At 500 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Gallatin to Braymer. Movement was
northeast at 45 mph.
Dime size hail and winds in excess of 40 mph will be possible with
these storms.
Locations impacted include...
Chillicothe, Trenton, Braymer, Jamesport, Breckenridge, Wheeling,
Utica, Chula, Laredo, Ludlow, Mooresville, Tindall, Lock Springs,
Spring Hill and Dawn.
LAT...LON 3975 9338 3952 9377 3953 9387 3991 9394
4027 9354 4026 9346
TIME...MOT...LOC 2200Z 225DEG 37KT 3988 9388 3958 9383
LaflinThe Pleasant Hill radar (KEAX), 154 km away, was scanning. The volume nearest the first event began at 22:30 UTC.
3 thunderstorm wind. Local standard time, as filed.
A 6 inch tree limb was down, and a powerline was down near Trenton.
A chicken coop was blown over and a section of fence was blown 100 yards in the neighbor's yard.
A pole barn was damaged near Purdin.
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, September 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: 719678, 719681, 719682.