A single wind report came in from a storm in Clay County. The damage was relegated to some trees and power lines in the Liberty area.
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.
A single wind report came in from a storm in Clay County. The damage was relegated to some trees and power lines in the Liberty area.
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 20, 10:01 PM CST, 3 hours 14 minutes earlier.
AREA FORECAST DISCUSSION National Weather Service Kansas City/Pleasant Hill MO 1101 PM CDT Mon Jul 20 2020 .Discussion... Issued at 254 PM CDT MON JUL 20 2020 Key message: Additional storms possible overnight into tomorrow morning with more heavy rain and flash flooding potential. This is a very uncertain forecast with a multitude of mesoscale features, not handled particularly well by any guidance, affecting the forecast. First, there are at least two distinct boundaries noted via satellite imagery. One is across southern KS and MO and progressing southward this afternoon. There is another boundary from north central KS that may extend into west central MO. This showed up well at 925mb, and helped initiate new convection in north central KS, but has been weakening as the low-level flow focuses on the southern boundary. The main synoptic front looks like it's across northern MO/ southern IA and slowly lifting northward. Any of these boundaries could be a focus for some afternoon/ evening storms. Additionally, there is an MCV along the KS/OK state line that is slowly tracking to the east. With broad/ weak northwesterly flow, there's subtle shortwave troughs moving through the flow into WY and NE. The morning MCS, residual cloud cover, and new cloud cover from showers/ storms that developed on the 925 boundary, are really inhibiting renewed instability this afternoon, lowering chances for afternoon and evening storms. Given this, the best chances look to be overnight into tomorrow morning again. The RAP has had the best handle, though still not very good, on the features mentioned above and feel that incorporating that more into the forecast may offer the best guidance. With that in mind, several areas of ascent develop overnight that should become the focus for renewed convection. An area of ascent noted on the 305K to 310K surfaces develops over central to eastern KS around midnight that shifts into western MO early in the morning. Another area of ascent, on the same theta levels develops over Nebraska and builds mainly southward. Think that showers and storms will develop over central to eastern KS, possibly into western MO tonight, and persist into tomorrow morning. With precipitable water values at or just over 2" over the area, the main concern will be from heavy rainfall and flash flooding. There could also be some gusty winds, especially areas that begin to surge forward, similar to this morning where 40 to 50 mph winds were observed with the line that surged through the KC metro For the middle portion of this week through the weekend, the pattern remains mostly unchanged. Ample moisture will continue to be present with the upper ridge remaining suppressed to our south. There's also a weak boundary draped through the region. So it's hard to find a period of time that looks dry. Rather, there could be afternoon, heat- of-the- day, showers/ storms as well as overnight convective systems that track southeastward along wherever the boundary may be that particular day. The upper ridge builds back north by the end of the week but both the GFS and the ECMWF keep a week boundary in place as high pressure moves into the Great Lakes. This pattern keeps low chances of PoPs going through the extended forecast, even with the upper ridge building northward. The good thing with the potential rainfall and cloud cover would that temperatures would be subdued some. Otherwise, it looks hot and humid through early next week. && .Aviation...(For the 06Z TAFS through 06Z Tuesday Night) Issued at 1101 PM CDT MON JUL 20 2020 We are currently tracking a system in eastern Kansas that has the potential to bring scattered rain showers to our terminals. The last few sets of model runs have been giving little guidance to whether these storms will fizzle out at the Kansas/Missouri border, so we kept the chance for rain showers near our terminals in the early morning hours. Off and on rain chances will continue for the rest of the TAF period until the early afternoon, so it was difficult to nail down a constant dry period before the next round of rain showers. There is still uncertainty in the timing of the late morning round of showers. We kept everything mostly the same with showers arriving by mid-morning, though we did extend the chance for rain farther into the afternoon. VFR conditions are expected into the evening. && .EAX WATCHES/WARNINGS/ADVISORIES... KS...NONE. MO...NONE. && Discussion...CDB Aviation...Klaus
Hazardous Weather Outlook National Weather Service Kansas City/Pleasant Hill MO 447 AM CDT Mon Jul 20 2020 KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040- 043>046-053-054-211000- 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- 447 AM CDT Mon Jul 20 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 A few strong storms with wind gusts and hail will be possible this morning and again later this afternoon into tonight. More detailed information can be accessed at... https://www.weather.gov/eax/hwo .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Chances for thunderstorms will continue into Tuesday. Locally heavy rainfall totals of 1-3" will be possible today into Tuesday. More detailed information can be accessed at... https://www.weather.gov/eax/hwo
The Pleasant Hill radar (KEAX), 51 km away, was scanning. The volume nearest the first event began at 07:15 UTC.
1 thunderstorm wind. Local standard time, as filed.
Isolated downburst within otherwise non-severe storms produced some tree damage, which caused some powerlines to come down in Liberty.
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: 912248.