Throughout the final few days of the month a mid level trough dug into the central part of the CONUS, and produced several rounds of moderate to heavy rain. Several areas reported well over 6 inches of rain over the 2 day period, with the high values occurring in Johnson County Missouri where almost 10 inches of rain over the 36-48 period was reported.
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.
Throughout the final few days of the month a mid level trough dug into the central part of the CONUS, and produced several rounds of moderate to heavy rain. Several areas reported well over 6 inches of rain over the 2 day period, with the high values occurring in Johnson County Missouri where almost 10 inches of rain over the 36-48 period was reported. Most of the flooding was minor and little to no damage was reported, but several roads were closed for a few days after the rain stopped.
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 Jul 29, 6:10 PM CST, 4 hours 14 minutes earlier.
AREA FORECAST DISCUSSION National Weather Service Kansas City/Pleasant Hill MO 710 PM CDT Wed Jul 29 2020 .Discussion... Issued at 350 PM CDT WED JUL 29 2020 Key Messages: - Periods of showers and thunderstorms expected the next few days - Locally heavy rainfall with some flooding concerns possible ...Short Term... (Today through Thursday) Forcing for ascent from a shortwave trough across the Central Plains paired with ample moisture (PWATs up to around 2 inches, well above climatological normals) has produced widespread showers and thunderstorms across the region this afternoon. A boundary draped across the region has allowed a few of these low topped cells to rotate, and a brief tornado occurred earlier this afternoon near Smithville. These showers and storms are also producing moderate rainfall, with one hour dual pol radar estimates showing generally around 1 inch per hour rainrates. Convection allowing models indicate scattered to widespread showers and thunderstorms continuing through the remaining afternoon and evening hours. While it is difficult to pinpoint exactly where this may occur, a few isolated locations could receive an additional 2 to 3 inches of rain by early Thursday morning. As such, WPC continues to show almost the entirety of the County Warning Area within a slight risk for excessive rainfall, and a flash flood warning may be warranted if trends continue to point in that direction. With continued troughing in place tomorrow providing forcing for ascent as well as abnormally high moisture levels, scattered showers and thunderstorms will increase once more Thursday afternoon and will provide another opportunity for locally heavy rainfall (WPC again has most of the region within a slight risk for excessive rainfall). With ample cloud cover and plenty of rain cooled air, high temperatures will only reach the upper 70s to low to mid 80s. ...Long Term... (Friday through Tuesday) The better forcing and moisture pairing shifts a little further south and east by Friday, with the focus for the heavier rainfall following accordingly. However, our southern counties could receive another quarter inch to half inch or so of rain. High temperatures will be near 80 degrees and it should feel fairly pleasant with dewpoints around 5 to 10 degrees cooler compared to those of today and Thursday. Another chance for showers and storms are possible Saturday afternoon into Sunday as another mid to upper level disturbance translates through the region from northwest to southeast. Pleasant weather should finally arrive by Monday and Tuesday of next week as northwest flow aloft will be paired with building high pressure at the surface. This will yield high temperatures only in the upper 70s with low humidity and a light northerly breeze. && .Aviation...(For the 00Z TAFS through 00Z Thursday Evening) Issued at 710PM CDT WED JUL 29 2020 Primarily MVFR conditions with pockets of IFR expected during the forecast period. Showers and storms continue for much of eastern KS and central and northwest MO. Areas of precipitation to the south and west of Kansas City are filling in as expected. These storms continue throughout the evening and overnight moving from NE KS through western and central MO. Airports encountering more intense precipitation could see VIS and CIG reduced significantly with some VIS obs below 1SM and some gusty winds. General IFR conditions are favored during the early morning hours as low clouds ceilings and scattered showers linger into Thursday morning. Ceilings are expected to lift during the afternoon hours to around 3kft. Winds transition from SE to E during the night and NE by the end of the forecast period. && .EAX WATCHES/WARNINGS/ADVISORIES... KS...NONE. MO...NONE. && Discussion...Williams Aviation...Pesel
Hazardous Weather Outlook National Weather Service Kansas City/Pleasant Hill MO 518 AM CDT Wed Jul 29 2020 KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040- 043>046-053-054-301030- 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- 518 AM CDT Wed Jul 29 2020 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 will move into the area later this morning. Some areas may see another couple inches of rain, but those amounts likely will not be widely represented. Minor stream flooding will be possible, especially the flashier streams. Widespread severe weather is not expected. More detailed information can be accessed at... https://www.weather.gov/eax/hwo .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Off and on thunderstorms will continue through Friday. Some areas may see an accumulation of a couple inches, with some isolated locations seeing higher amounts. Local streams may see some flooding with the 2 to 3 days of moderate to heavy showers. Widespread severe weather is not expected. More detailed information can be accessed at... https://www.weather.gov/eax/hwo
Special Weather Statement National Weather Service Kansas City/Pleasant Hill MO 552 PM CDT Wed Jul 29 2020 KSZ025-102-103-MOZ020-028-292330- Doniphan KS-Atchison KS-Leavenworth KS-Platte MO-Buchanan MO- 552 PM CDT Wed Jul 29 2020 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL DONIPHAN...NORTH CENTRAL LEAVENWORTH...EASTERN ATCHISON...SOUTHWESTERN BUCHANAN AND NORTHWESTERN PLATTE COUNTIES UNTIL 630 PM CDT... At 552 PM CDT, Doppler radar was tracking a strong thunderstorm over Lewis And Clark Village, or near Atchison, moving southeast at 15 mph. Wind gusts up to 50 mph will be possible with this storm. Locations impacted include... Atchison, Weston, Rushville, Lewis And Clark Village, Doniphan, De Kalb, Iatan, Bean Lake and Lewis And Clark Vi. This includes Interstate 29 between mile markers 31 and 34. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3954 9522 3969 9509 3957 9475 3936 9496 TIME...MOT...LOC 2252Z 302DEG 13KT 3954 9503 PP
Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
713 PM CDT Wed Jul 29 2020
MOZ043-300100-
Cass MO-
713 PM CDT Wed Jul 29 2020
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CASS COUNTY UNTIL
800 PM CDT...
At 713 PM CDT, Doppler radar was tracking a strong thunderstorm near
East Lynne, or near Harrisonville, moving north at 20 mph.
Winds in excess of 40 mph will be possible with this storm.
Locations impacted include...
Raymore, Harrisonville, Pleasant Hill, Peculiar, Garden City, Lake
Winnebago, East Lynne, Baldwin Park, Strasburg and Gunn City.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3860 9443 3883 9445 3884 9418 3883 9417
3883 9413 3882 9413 3854 9415
TIME...MOT...LOC 0013Z 176DEG 17KT 3866 9429
PPSpecial Weather Statement National Weather Service Kansas City/Pleasant Hill MO 716 PM CDT Wed Jul 29 2020 KSZ057-300100- Miami KS- 716 PM CDT Wed Jul 29 2020 ...SIGNIFICANT WEATHER ADVISORY FOR WESTERN MIAMI COUNTY UNTIL 800 PM CDT... At 716 PM CDT, Doppler radar was tracking a strong thunderstorm near Rantoul, or near Osawatomie, moving east at 25 mph. Winds up to 40 mph will be possible with this storm. Locations impacted include... Paola, Osawatomie, Chiles, Hillsdale and Wagstaff. LAT...LON 3849 9507 3867 9506 3870 9474 3844 9475 TIME...MOT...LOC 0016Z 273DEG 22KT 3859 9500 PP
The Pleasant Hill radar (KEAX), 9 km away, was scanning. The volume nearest the first event began at 04:23 UTC.
7 flash flood, 5 flood. Local standard time, as filed.
Reports from emergency management indicated several spots along Highway P were flooded.
NWS employee reported water over Highway 58 just west of Holden.
There was flash flooding along the North Belt Highway between Karnes Road and Gene Field Road. This area does not typically flood.
Highway 169 just south of King City was closed due to water over the road.
Water was over the road on Highway 13 near the Lafayette and Johnson County line.
Water was flowing over Highway AA just east of Higginsville.
Water was over the road at B Highway, east of Highway T in southeast Cass County.
Several roads along Highway 23 near the Blackwater River have been flooded.
A NWS employee reported running water over the intersection at County Road VV and 701st Road.
Missouri Department of Transportation reported Highway 213 closed at Little Talbot Creek due to flooding.
Water was over Route F between Route A and Highway 52.
Two reports of flash flooding came around two hours apart, indicating at least 3 hours of flash flooding at these locations. There was water over the road at SW Highway B between SW 1200th Road and NW Highway N. Water was also over the road along Highway N just east of Blairstown.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2020Every state in 2020This day in weather historyWarnings in Missouri, July 2020
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: 912258, 912259, 912251, 912252, 912253, 912254, 912260, 912261, 912255, 912262, 912256, 912257.