There was an isolated report of flooding.
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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 SGF wrote it up.
There was an isolated report of 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 Springfield, MO wrote its last area forecast discussion before the first event at Aug 11, 5:22 AM CST, 1 hour 8 minutes earlier.
Area Forecast Discussion National Weather Service Springfield MO 622 AM CDT Fri Aug 11 2017 .SHORT TERM...(Today and tonight) Issued at 350 AM CDT Fri Aug 11 2017 Scattered showers and storms have developed/continued overnight across a good portion of the forecast area. The only locations that have not yet seen rain/storms is across south-central MO. The broader picture shows a frontal boundary upstream along the I70 corridor. Aloft, a weak H5 impulse was pushing from KS into MO. This has been enough to trigger a MCS across OK/KS and is aiding in the development of convection over our region. Short term models bring the MCS/MCV from KS/OK into our area this morning. Current thoughts are that this activity should be in a weakening state. Low level cold pool will probably help the frontal boundary to our north drop southward more efficiently, which may help to dry us out from north to south a bit faster than models currently anticipate. Still, given the relatively close proximity of the front and the MCS/MCV, think that at least the first half of the day will be cloudy and perhaps wet the further south you go. Eventually, as the front continues to move southward we should dry out later this afternoon/evening regardless. In fact, much of the overnight tonight at this point appears to be dry. .LONG TERM...(Saturday through Thursday) Issued at 350 AM CDT Fri Aug 11 2017 The stubborn northwesterly flow should continue to affect our forecast through the weekend and into early next week. This basically means 1)showers and thunderstorm chances will remain and 2) cooler than average temperatures will continue. First, through this weekend...the aforementioned frontal boundary will have pushed through the area. It appears that much of the precipitation for the first half of the weekend will be located right along or south of the Arkansas/MO border. For the 2nd half of the weekend another upper level disturbance will begin to move into the region, which should increase our rain chances once again. In the wake of this late weekend/Monday impulse, some subtle height ridging looks to take place by Tuesday, however, this will quickly be replaced with another impulse by Wednesday as the overall pattern remains rather progressive. In summary, there will likely be rain chances off and on through the next week or so, however, it shouldn't be a total washout on any given day. Given the potential for heavy rainfall rates at times we'll need to monitor for some localized flooding, especially locations that receive multiple rounds of unsettled weather. && .AVIATION...(For the 12Z TAFS through 12Z Saturday morning) Issued at 622 AM CDT Fri Aug 11 2017 KSGF/KJLN/KBBG tafs: Scattered showers/thunderstorms will occur at times this morning at the TAF sites. Will cover with tempo groups through much of the morning hours. expect MVFR to at times IFR flight conditions within the storms. There still remains some uncertainty beyond 18Z today. Some of the short term models are indicating the activity to drop south of the terminals with mainly VFR conditions. Will keep VCTS for some of the afternoon hours though based on uncertainty. Otherwise, after 00Z things look to be mainly dry with only a mid deck of clouds. Will have to watch for any clearing skies as this would likely result in some fog formation. && .SGF WATCHES/WARNINGS/ADVISORIES... MO...NONE. KS...NONE. && SHORT TERM...Frye LONG TERM...Frye AVIATION...Raberding
Hazardous Weather Outlook National Weather Service Springfield MO 431 AM CDT Fri Aug 11 2017 KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-120945- Bourbon-Crawford-Cherokee-Benton-Morgan-Miller-Maries-Vernon- St. Clair-Hickory-Camden-Pulaski-Phelps-Barton-Cedar-Polk-Dallas- Laclede-Texas-Dent-Jasper-Dade-Greene-Webster-Wright-Newton- Lawrence-Christian-Douglas-Howell-Shannon-McDonald-Barry-Stone- Taney-Ozark-Oregon- 431 AM CDT Fri Aug 11 2017 This Hazardous Weather Outlook is for portions of the Missouri Ozarks and extreme southeast Kansas. .DAY ONE...Today and Tonight. Weather hazards expected... Elevated Lightning risk. DISCUSSION... Showers and thunderstorms will be possible across the region this morning and into the afternoon hours. Frequent cloud-to- ground lightning, brief torrential rainfall, gusty winds, and small hail may accompany the stronger storms. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Thunderstorms will remain possible at times through next week. Some locally heavy rainfall will be possible across extreme southeastern Kansas and far southwestern Missouri. The heaviest rainfall during this time period is expected just to the south and west of the outlook area across northeastern Oklahoma. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed through tonight. && More detailed information can be accessed at: http://www.weather.gov/sgf/sitrep This product in graphical format...along with other weather... hydrological and climate information...at http://www.weather.gov/sgf Frye
The Springfield radar (KSGF), 95 km away, was scanning. The volume nearest the first event began at 12:31 UTC.
1 flash flood. Local standard time, as filed.
Several roads were closed in Neosho due to flooding.
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: 707034.