Severe pulse storms occurred across the area on an afternoon basis from August 7-11. The most impactful afternoon/evening occurred on August 10 when severe pulse storms affected the Springfield metropolitan 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 SGF wrote it up.
Severe pulse storms occurred across the area on an afternoon basis from August 7-11. The most impactful afternoon/evening occurred on August 10 when severe pulse storms affected the Springfield metropolitan area. The Route 66 Festival with estimated 60,000 people was in both a Severe Thunderstorm and Flash Flood Warning with eventual cancellation of activities for the night. On August 7-8 A storm complex that developed during the late evening of the 6th and early morning hours of the 7th over Kansas pushed an outflow boundary into southwest Missouri.
Strong to severe storms developed along the boundary intermittently from the late morning of the 7th to the late afternoon of the 8th . The strongest storms impacted areas to the south and east of Springfield, and produced straight line wind damage to trees and roofs. One barn in Oregon County was destroyed due to the strong winds and a boat dock on Table Rock Lake was flipped over. Several roads in Branson flooded as a result of heavy rainfall during the afternoon of the 8th. Two-day rainfall totals averaged between one and one and a half inches along and south of Highway 60. Localized accumulations over two inches occurred near Branson. From August 9-12, a weak front stalled over the region and interacted with a very moist and unstable air mass to produce scattered late afternoon and early evening strong to severe storms across the region each day. Several of the storms produced hail up to the size of golf balls, wind damage to trees, powerlines, boat docks and roofs, and localized flash flooding. The majority of the storms affected the western half of the region on the 9th and 10th , with storm coverage becoming more isolated on the 11th and 12th.
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 7, 5:39 AM CST, 4 hours 46 minutes earlier.
Area Forecast Discussion National Weather Service Springfield MO 639 AM CDT Tue Aug 7 2018 ...12Z AVIATION UPDATE... .SHORT TERM...(Today and tonight) Issued at 209 AM CDT Tue Aug 7 2018 At this time...a surface front extends across northern Missouri with nearly zonal upper level flow across the northern states and the summertime flat ridge extending across the south with high pressure centered over the desert southwest. Convection has been firing along the front ahead of several short waves advancing through the upper level flow. The surface front should advance slowly southward during the day on Tuesday making its way into southern Missouri by this time on Wednesday. Meanwhile...several waves will continue to advance through the upper level flow today and tonight bringing several rounds of showers and thunderstorms throughout the day. Given the increase in cloud cover and convective activity...temperatures will be cooler than on Monday. .LONG TERM...(Wednesday through Monday) Issued at 209 AM CDT Tue Aug 7 2018 High pressure over the desert southwest will begin to amplify during the middle to latter portions of the week...with the ridge getting tilted eastward as a strong trough moves into the Pacific Northwest late Friday into Saturday. At the surface...the front...now over northern Missouri will move into and then stall over Arkansas. For the forecast area...much needed rain is in the forecast through Thursday night into Friday. Rainfall amounts overall look to be generally less than an inch...but some areas could locally see more if storms stall or train over a given area. Rain chances decrease over the weekend. With the surface front just to our south...convection will be more widely scattered and diurnally driven. The next chances for organized rain will occur beginning on Monday as the aforementioned trough moving into the Pacific Northwest moves up and over the western ridge and dives southward into the Great Lakes Region. Overall...temperatures will be close to seasonal normals with daily highs in the upper 80s to lower 90s and overnight lows in the mid to upper 60s. Heat index values should generally be in the low to mid 90s. && .AVIATION...(For the 12Z TAFS through 12Z Wednesday morning) Issued at 635 AM CDT Tue Aug 7 2018 Scattered showers and thunderstorms will approach the terminals by mid to late morning. A wind shift to the northwest will be possible out ahead of the rain this morning. Additional showers and storms are possible this evening and overnight however have gone with prob 30 groups for now due to uncertainty in coverage. Winds will be predominantly out of the south with higher gusts possible within thunderstorms. VFR conditions are expected outside of thunderstorms. && .SGF WATCHES/WARNINGS/ADVISORIES... MO...NONE. KS...NONE. && SHORT TERM...Gaede LONG TERM...Gaede AVIATION...Burchfield
Hazardous Weather Outlook National Weather Service Springfield MO 428 AM CDT Tue Aug 7 2018 KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-080930- 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- 428 AM CDT Tue Aug 7 2018 This Hazardous Weather Outlook is for portions of the Missouri Ozarks and extreme southeast Kansas. .DAY ONE...Today and Tonight. Weather hazards expected... Limited hail risk. Limited thunderstorm wind damage risk. Limited flooding risk. Significant lightning risk. Limited excessive heat risk. DISCUSSION... A cold front will move through the area today and be situated across southern Missouri by Wednesday morning. Thunderstorms will occur along and ahead of the front from this morning through the overnight hours. A few of the stronger storms could produce hail up to one-inch in diameter and damaging straight line winds up to 60 mph during the afternoon and evening hours. Some of the heavier rain storms...especially those which are slow moving or continue to regenerate and move over the same area...may also produce localized flooding. Heat index values along the Missouri-Arkansas border will reach the mid to upper 90s this afternoon into early this evening. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Thunderstorms will be possible from Wednesday into Thursday and again by Monday. However...severe weather is not expected at this time. Heat index values in the mid to upper 90s will occur over mainly western Missouri during the weekend. .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 Gaede
The Springfield radar (KSGF), 63 km away, was scanning. The volume nearest the first event began at 16:25 UTC.
37 thunderstorm wind, 9 hail, 7 heavy rain, 1 flood, 1 flash flood. Local standard time, as filed.
Several large limbs were reported down. Some fence damage occurred from falling limbs.
The public reported a few 1 inch limbs down and shingles blown off a gas station roof.
Strong thunderstorm winds blew some shingles off of a rooftop.
The public reported estimated 60 mph winds.
A report received via social media showed several large branches broken off a tree.
A few 1-2 foot diameter branches were snapped off a large tree.
The Co-op observer at station BNNM7, at the Branson airport reported a two day 48hr total rainfall of 2.40 inches, most of which fell during the past 24hrs.
A boat dock was flipped over near a lake resort on Indian Point.
Two large trees were reported down on County Road 106.
A large tree was reported down.
A tree was downed on Indian Point.
Several roads were flooded in the Branson area including Roark Valley Road near Forsythe Street.
A report of quarter size hail was received via social media. The time was estimated by radar.
Dime to Nickle size hail was reported just north of Joplin. The time was estimated by radar.
Multiple 2-3 inch limbs were reported broken off along with dime sized hail.
The public reported an estimated 60mph wind gust.
Dime size hail and small limbs were reported down near I-44, east of Sarcoxie.
Dime to nickel sized hail was reported 1 mile east of Cassville. The timing was estimated from radar.
Downburst winds caused shingle damage at one residence near the intersection of Highway B and Highway 39.
Dime sized hail occurred south of Cassville on Highway 112 near Coyote Ridge Road.
A private citizen owned weather station along the Missouri/Arkansas border along the White River measured a 67mph wind gust.
Multiple trees were reported down.
Trees and power lines were reported down. Minor damage occurred to an outbuilding. Storm spotter estimated winds at 60 mph.
Dime size hail was reported.
A telephone pole was down on Highway V.
Several trees were downed just west of the intersection of Highways 123 and 13, southwest of Humansville.
A 2 to 3 foot diameter tree was uprooted in downtown Ozark. Report was received via social media.
A large tree fell on a building at a wedding pavilion causing minor damage. Report was relayed via media partner.
A broadcast media partner relayed a report of 3 to 5 inch tree limbs down in the Downtown Springfield area.
A large tree limb snapped off and was lying on a power line near Sunshine Street and US Highway 65. The report was received via social media.
Several large trees fall on garages, a vehicle and across the road at the Ava Country Club. The report was relayed via media contact.
A large tree was down across road on Johnson Avenue in Ava. Report was relayed via ham radio operator.
The top of 3 to 4 inch diameter tree was broken off near Highway 5 and Highway Y west of Ava.
An uprooted tree was lying against the high school in Ava. Only very minor damage occurred.
Quite a bit of tree damage occurred in the vicinity of South Fort and Sunshine Streets. Damage to trees continued either side of Fort Street for several blocks south to Sunset Road. Many roads were covered with small tree debris. A large number of downed branches were noted though most were smaller than an inch in diameter.
Media contact reported quarter size hail and small tree limbs down at the KY3 studio off of Sunshine Street.
The public reported golf ball size hail 4 miles east of Milo in a rural area. The time was estimated from radar.
An 8 inch branch and large section of a silver maple was blown out of a tree on to Walnut Lawn Road and Dayton Street.
Numerous reports of 2-3 inches of heavy rainfall in southern and western Springfield were reported that fell between 7-8pm were received.
Several trees and limbs were reported down in the Squires area and south toward the Ozark County line.
A spotter reported up to golf ball size hail along Kansas Expressway from Battlefield Road to Sunshine Street. No significant damage was reported. The time was estimated from radar.
Numerous reports of large trees and branches down occurred in western and southern Springfield. Some minor damage occurred to a few houses.
The Emergency Manager reported that multiple trees and limbs were down around Willard.
Multiple reports of 4 to 6 inch tree branches down were received near the intersection of East Guinevere Street and South King Avenue.
A 36 inch diameter tree fell through the roof of a home on West Farm Road 182 causing moderate damage.
Several large tree limbs were reported down near the intersection of West Bypass and Republic Road. The report was received via social media.
Several tree limbs, of at least 12 inches in diameter, were downed at the Island Green Golf Course.
Numerous reports of 6 to 12 inches of standing water were reported on roadways with a few cars stalled across western Springfield.
A storm total report of 2.30 inches of rain was measured at Mark Twain Elementary School.
A storm total report of 3.06 inches of rainfall was reported by a COCORAHS rain gauge near Sunset and Kansas Roads.
A storm total report of 2.28 inches of rain was measured at Sherwood Elementary School.
A storm total report of 2.21 inches of rain was measured at Sunshine Elementary School.
A storm total report of 2.30 inches of rain was measured at the Mesonet Station WCCM7, Wilson Creek in Springfield.
The Automated Weather Observing System located in Branson West recorded a 61mph wind gust.
A dock was flipped and flotation from the dock was blown west of the K Dock Marina.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2018Every state in 2018This day in weather historyWarnings in Missouri, August 2018
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: 780748, 780165, 780166, 780167, 780749, 780750, 780119, 780752, 780753, 780754, 780755, 777512, 775373, 775375, 780768, 780168, 775377, 775378, 780769, 775380, 780169, 780770, 781660, 775381, 781662, 781664, 781665, 781666, 781667, 781668, 781669, 781671, 781673, 781674, 781676, 775383, 775386, 781681, 780756, 781682, and more.