Several thunderstorms, some severe, moved through portions of eastern Kansas bringing damaging winds and flash flooding.
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.
Several thunderstorms, some severe, moved through portions of eastern Kansas bringing damaging winds and flash flooding.
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 26, 8:19 AM CST, 1 hour 23 minutes earlier.
AREA FORECAST DISCUSSION National Weather Service Kansas City/Pleasant Hill MO 919 AM CDT Mon Aug 26 2019 .Update... Issued at 919 AM CDT MON AUG 26 2019 Updated PoPs to reflect the convection moving into the western side of the forecast area. There's a tight west to east instability gradient, with some eastward advection of that instability. Still think storms will weaken as they track to the east, but some strong to potentially severe storms can not be ruled out this morning as the convection moves into the area. Particularly, the trailing line in northeastern KS and the middle line, which is showing some signs of strengthening. This morning MCS definitely throws a wrinkle into the afternoon round of storms. CAM models have not resolved this system, even the 12Z runs, so it adds considerable uncertainty with how the day will evolve. Models that are performing better show the morning MCS leaving an outflow boundary across the MO river valley with strong instability building during the afternoon. With upper level support, the overall pattern still supports an afternoon round of severe weather. && .Discussion... Issued at 307 AM CDT MON AUG 26 2019 An active period will commence this afternoon and evening as storms develop along a cold front, capable of producing damaging winds, large hail, along with a few tornadoes. Low-level moisture continues to linger across the area as of early Monday morning. Areas of fog will impact the early morning commute before slowly dissipating by the mid-morning as a warm front lifts north into the region. As the front lifts north, dew points will rise 10 to 12 degrees for areas south of I-70, which combined with an already present EML from the southwest, will create a strongly destabilized environment by the afternoon, with MLCAPE values exceeding 4000 J/kg south of the warm front. A deepening mid-level trough across the Northern Plains will permit a speed max to dip south over northern to central Missouri, leading to strong mid to upper-level westerlies and resulting 0 to 6 km bulk shear values in the 40 to 50 knot range. Southwesterly surface winds underneath strong westerly flow aloft will also yield 0 to 1 SRH values of 100 m2/s2, mainly across central Missouri. Low LCL heights are also expected given increasing dew points and lingering low-level moisture in the area. All said, the environment will be ripened for all modes of severe weather as the cold front pushes through the area this afternoon and evening. One item worth considering is the role that a decaying MCS from the northwest will play into interaction with the warm front later this afternoon and evening. Currently thinking that the complex will enter northwest and later central Missouri this morning. Lingering storms with this may be ongoing as the cold front arrives into the northwest Missouri later this afternoon. Will need to monitor how far north the warm front makes it this afternoon, and the placement of any west to east outflow boundaries present from the morning MCS. This could enhance the potential for tornadic activity considering any boundary interaction, particularly for eastern Kansas and western Missouri. Storms should initially be fairly discrete with a few supercells possible. This would increase both the potential for large hail and tornadoes early in the event. As the afternoon and evening progress, the line of storms should fill in along the front and the main hazard would then shift to damaging wind potential. Last but not least will be the potential for flash flooding toward the latter half of the event. Although the frontal passage will be progressive, rainfall averaging near half an inch to three quarters of an inch has fallen in the last 24 hours, thus sensitizing flash flood guidance values ahead of today's event. Forecast PWAT values will also approach 2 inches as moisture builds ahead of the frontal boundary. Main takeaway is to prepare for all modes of severe weather and have a way to receive warning information this afternoon and evening, including during the evening commute time frame. Cooler temps will remain in place through the mid to late week in the wake of today's frontal passage as broad surface high pressure builds into the area. The next chance for precip will hold off until Friday and into the weekend as another cold front approaches the region. && .Aviation...(For the 12Z TAFS through 12Z Tuesday Morning) Issued at 607 AM CDT MON AUG 26 2019 Low-level moisture will continue to produce IFR to LIFR conditions through the early to mid morning hours until a gradual improvement by 14Z to 15Z. Weakening storms will also impact northwest Missouri later this morning, gradually expanding in coverage for areas further south and southeast along a cold front this afternoon and evening. Strong wind gusts are possible in some storms, along with heavy rain and reduced visibility. VFR conditions will then return late this evening with northwesterly surface winds following in the wake of the frontal passage. && .EAX WATCHES/WARNINGS/ADVISORIES... KS...NONE. MO...NONE. && Update...CDB Discussion...Welsh Aviation...Welsh
Hazardous Weather Outlook National Weather Service Kansas City/Pleasant Hill MO 604 AM CDT Mon Aug 26 2019 KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040- 043>046-053-054-271115- 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- 604 AM CDT Mon Aug 26 2019 This hazardous weather outlook is for northwest...north central and west central Missouri...as well as extreme eastern Kansas. .DAY ONE...Today and Tonight Severe storms are expected this afternoon and evening, with damaging winds, hail, isolated tornadoes and flash flooding all being of concern. More detailed information can be accessed at... https://www.weather.gov/eax/hwo .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Week ahead looks quiet. More detailed information can be accessed at... https://www.weather.gov/eax/hwo
Special Weather Statement National Weather Service Kansas City/Pleasant Hill MO 936 AM CDT Mon Aug 26 2019 KSZ104-MOZ028-261500- Wyandotte KS-Platte MO- 936 AM CDT Mon Aug 26 2019 ...SIGNIFICANT WEATHER ADVISORY FOR WYANDOTTE AND SOUTHEASTERN PLATTE COUNTIES UNTIL 1000 AM CDT... At 936 AM CDT, Doppler radar was tracking a strong thunderstorm near Kansas City, or near Edwardsville, moving east at 25 mph. Penny size hail will be possible with this storm. Locations impacted include... Bonner Springs, Parkville, Edwardsville, Riverside, Weatherby Lake, Kansas City Kansas, Kansas City, Lake Waukomis, Platte Woods, Northmoor, Houston Lake, Wolcott, Pomeroy, Muncie, Beverly Hills, Maywood and Piper. This includes the following highways... Interstate 70 in Missouri near mile marker 0. Interstate 70 in Kansas between mile markers 410 and 423. Interstate 29 between mile markers 4 and 7. Interstate 635 between mile markers 3 and 12. Interstate 435 between mile markers 11 and 21. Kansas Turnpike between mile markers 224 and 226. LAT...LON 3918 9490 3925 9460 3908 9461 3907 9489 TIME...MOT...LOC 1436Z 250DEG 21KT 3913 9484 Blair
The Pleasant Hill radar (KEAX), 80 km away, was scanning. The volume nearest the first event began at 15:39 UTC.
3 thunderstorm wind, 2 flash flood, 1 flood. Local standard time, as filed.
Several streets in Leavenworth were closed due to flooding.
There was a partial collapse of a building in Olathe. No injuries were reported.
KIXD reported 76 mph wind.
An Emergency Manager reported a 60 mph wind.
Six inches of water was flowing across Highway 24-40.
Water rescue took place at Highway 5 and 7 Mile Creek.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Kansas in 2019Every state in 2019This day in weather historyWarnings in Kansas, August 2019
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: 852440, 852441, 852442, 852443, 852438, 852439.