August 28-30 Showers and storms developed ahead of a cold front that moved from eastern Kansas into central and southern Missouri on the 28th and 29th, with additional storm Images show rainfall accumulations development on the 30th as the front shifted back to the north of the Ozarks. The heaviest rainfall occurred during the morning and afternoon of the 30th, as a mesoscale convective system…
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.
August 28-30 Showers and storms developed ahead of a cold front that moved from eastern Kansas into central and southern Missouri on the 28th and 29th, with additional storm Images show rainfall accumulations development on the 30th as the front shifted back to the north of the Ozarks. The heaviest rainfall occurred during the morning and afternoon of the 30th, as a mesoscale convective system that developed near Wichita during the early morning of the 30th moved slowly eastward into southeast Kansas and southwest Missouri. Repeated development of storms over the region led to rainfall accumulations in excess of four inches over portions of Stone, Christian, Cherokee and Bourbon Counties. Numerous reports of flash flooding were received in these areas.
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 29, 5:04 AM CST, 2 hours 56 minutes earlier.
Area Forecast Discussion National Weather Service Springfield MO 604 AM CDT Wed Aug 29 2018 ...Updated for 12Z Aviation Discussion... .SHORT TERM...(Today and tonight) Issued at 305 AM CDT Wed Aug 29 2018 Early this morning a surface cold front stretched from southeast Kansas into northern Missouri and on into the Great Lakes Region. Most of the convection has been confined across northern Missouri and into the Great lakes. However, activity was beginning to fire across our northern counties ahead of an outflow boundary that has worked its way south. The front and outflow boundaries will be the focus for continued development this morning. This front will move southward through the forecast area today and settle across far northern Arkansas by afternoon and then stall out there this evening and overnight. A moist and unstable atmosphere ahead of the front will be conducive to showers and thunderstorms. With precipitable water running around 2.00 inches, expect enough instability for some vigorous updrafts, but deep layer shear remains only in the 15-20 knot range. Still looks good for a marginal threat of damaging winds to 60 mph, and perhaps quarter sized hail along with heavy downpours. With the clouds, precipitation and cooler air behind the front, there will be a noticeable differences in temperatures, with highs mainly in the 70s to low 80s. As Instability wanes tonight as the cooler airmass settles over the region behind the front, will likely see a break in the convection. However, modest low level jet develops across Oklahoma and Kansas, and with moisture riding over the 850mb front will see some more activity develop after midnight, especially over southeast Kansas and western Missouri. Temperatures will be on the comfortable side with lows ranging from the lower 60s over central Missouri to near 70 along the Arkansas border. .LONG TERM...(Thursday through Tuesday) Issued at 305 AM CDT Wed Aug 29 2018 On Thursday, the front over Arkansas will lift northward through the area as a warm front. Increasing instability and the presence of the front will lead to more convection. Temperatures and dewpoints will respond accordingly with highs back into the 80s and dew points in the lower 70s by afternoon. There looks to be a break in the rain chances then Thursday night with the warm front to our north. Look for lows in the upper 60s to lower 70s. For Friday, area remains on the northern fringe of the upper ridge and although atmosphere to be somewhat moist and unstable, no real trigger mechanisms to pinpoint any convection. However, temperatures will be back up into the upper 80s to lower 90s once again. Medium range models still showing considerable spread from Saturday through Monday, with a little better consensus on Tuesday with a front moving into the area. Overall, looks as though there will be periodic rain chances. At this point certainly doesn't look like a weekend washout by any means. Temperatures during this time frame look to be above seasonal normals. && .AVIATION...(For the 12Z TAFS through 12Z Thursday morning) Issued at 604 AM CDT Wed Aug 29 2018 A cold front will push through the area today. Showers and storms were developing over southern Missouri and this trend will continue through the morning hours. Short term models are showing some MVFR ceilings advecting into the area form the north later this morning as well. There could be some IFR ceilings and visibilities within the stronger storms. These should dissipate this evening before more storms develop well after midnight tonight and possibly effect the TAF sites towards the end of the TAF period. && .SGF WATCHES/WARNINGS/ADVISORIES... MO...NONE. KS...NONE. && SHORT TERM...Raberding LONG TERM...Raberding AVIATION...Raberding
Hazardous Weather Outlook National Weather Service Springfield MO 440 AM CDT Wed Aug 29 2018 KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-300945- 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- 440 AM CDT Wed Aug 29 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 thunderstorm wind damage risk. Significant lightning risk. DISCUSSION... Showers and thunderstorms will become more numerous through the morning hours. There is a marginal risk for severe storms, mainly this afternoon across southern Missouri, with winds to 60 mph and possibly some small hail. Heavy downpours of rain is also possible with the stronger storms. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Thunderstorms will be possible again Thursday but no severe weather is expected. Periodic thunderstorms will continue from Friday through Tuesday. .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 Raberding
Special Weather Statement
National Weather Service Springfield MO
716 AM CDT WED AUG 29 2018
MOZ055-056-069-291245-
Camden MO-Benton MO-Morgan MO-
716 AM CDT WED AUG 29 2018
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN BENTON...
NORTHWESTERN CAMDEN AND SOUTHWESTERN MORGAN COUNTIES UNTIL 745 AM
CDT...
At 716 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 14 miles southwest of Laurie to near Macks
Creek. Movement was northeast at 25 mph.
Dime size hail and wind gusts up to 50 mph will be possible with
these storms.
Locations impacted include...
Lake of The Ozarks... Lake of The Ozarks State Park...
Osage Beach... Camdenton...
Village of Four Seasons... Laurie...
Sunrise Beach... Macks Creek...
Linn Creek... Gravois Mills...
Climax Springs... Green Bay Terrace...
Knobby... Hurricane Deck...
Old Linn Creek... Barnumton...
Purvis... Roach...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
If on or near Lake of the Ozarks, get out of the water and move
indoors or inside a vehicle. Remember, lightning can strike out to
10 miles from the parent thunderstorm. If you can hear thunder, you
are close enough to be struck by lightning. Move to safe shelter
now! Do not be caught on the water in a thunderstorm.
&&
LAT...LON 3846 9292 3824 9270 3822 9270 3821 9267
3813 9259 3810 9259 3790 9298 3801 9307
3806 9306 3806 9312 3812 9317
TIME...MOT...LOC 1216Z 220DEG 20KT 3812 9307 3799 9294
TerrySpecial Weather Statement
National Weather Service Springfield MO
827 AM CDT WED AUG 29 2018
MOZ055-068-069-291415-
Camden MO-Benton MO-Hickory MO-
827 AM CDT WED AUG 29 2018
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN HICKORY...
SOUTHEASTERN BENTON AND CAMDEN COUNTIES UNTIL 915 AM CDT...
At 827 AM CDT, Doppler radar was tracking a strong thunderstorm 10
miles northeast of Hermitage, moving east at 30 mph.
Half inch hail and wind gusts up to 50 mph will be possible with this
storm.
Locations impacted include...
Lake of The Ozarks... Ha Ha Tonka State Park...
Lake of The Ozarks State Park... Osage Beach...
Camdenton... Village of Four Seasons...
Laurie... Sunrise Beach...
Macks Creek... Linn Creek...
Preston... Cross Timbers...
Climax Springs... Green Bay Terrace...
Fristoe... Knobby...
Hurricane Deck... Old Linn Creek...
Edwards... Branch...
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 3822 9269 3787 9261 3789 9262 3789 9263
3790 9306 3791 9327 3812 9328 3820 9287
3819 9277 3822 9276 3823 9271
TIME...MOT...LOC 1327Z 263DEG 26KT 3803 9317
HatchSpecial Weather Statement
National Weather Service Springfield MO
859 AM CDT WED AUG 29 2018
MOZ090-091-095-096-104-291445-
Douglas MO-Greene MO-Taney MO-Webster MO-Christian MO-
859 AM CDT WED AUG 29 2018
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN WEBSTER...WESTERN
DOUGLAS...CHRISTIAN...NORTHERN TANEY AND SOUTHEASTERN GREENE COUNTIES
UNTIL 945 AM CDT...
At 858 AM CDT, Doppler radar was tracking a strong thunderstorm near
Sparta, or near Ozark, moving east at 15 mph.
Half inch hail and wind gusts up to 50 mph will be possible with this
storm.
Locations impacted include...
Nixa... Ozark...
Rogersville... Ava...
Seymour... Sparta...
Highlandville... Fremont Hills...
Fordland... Diggins...
Spokane... Oldfield...
Elkhead... Chestnutridge...
Rome... Chadwick...
Linden... Brownbranch...
Bruner... Selmore...
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 3680 9331 3682 9331 3682 9334 3707 9334
3725 9280 3714 9268 3707 9268 3707 9260
3679 9280
TIME...MOT...LOC 1358Z 270DEG 12KT 3695 9316
HatchThe Springfield radar (KSGF), 76 km away, was scanning. The volume nearest the first event began at 13:58 UTC.
31 heavy rain, 13 flash flood, 3 lightning, 3 flood, 2 hail. Local standard time, as filed.
Lightning struck an antenna on a house five miles NNW of Hartville. Minor damage was reported. The time of the strike was estimated from radar and lightning plots.
A storm total of 3.00 inches of rainfall was reported.
Northbound Missouri Highway 125 was closed due to flooding.
Southbound Route C was closed due to flooding.
A trained spotter posted a picture of County Road 7490 flooded over at the Corn Creek Crossing on social media.
A viewer reported 1.68 inches of rain in one hour on Jenkins Road in Sparta.
A viewer reported a storm total of 3.50 inches of rainfall was reported.
Lightning struck a motor home resulting in a fire off Highway 95 and Nettleton Drive, just north of Mountain Grove, Mo. The time of the strike was estimated from radar and lightning plots.
Three and a half inches of rain fell in three and a half hours starting at 7 am. An inch of the rain fell between 9:30 and 10:30 am. Some ponding on streets was occurring, especially low areas.
Lightning struck a garage and caused minor damage. The time of the strike was estimated from radar and lightning plots.
A home weather station measured a storm total of 4.44 inches of rainfall, near exit 156 along Interstate 44.
A few of the country roads around Hartville are impassible due to water over the roadways.
A measured 4.04 inches of rain fell in six hours. Rainwater flooded a basement with 2 inches of water.
Rainfall totaling 2.24 inches fell in 6 hours.
The road was closed due to flooding on Route Y west and east bound at the Cowskin Creek Crossing.
The road was closed due to flooding on Highway AB in both directions at the Wolf Creek Crossing.
The road was closed due to flooding on Route U at the Bryant Creek Crossing.
The road was closed due to flooding on Route E at the Gasconade River Crossing.
A storm total of 3.50 inches of rainfall was reported.
A storm total of 2.50 inches of rainfall was reported.
A storm total of 2.50 inches of rainfall was reported.
A storm total of 3.70 inches of rainfall was reported.
A 24 hour storm total of 3.88 inches of rainfall was reported.
A 24 hour storm total of 3.13 inches of rainfall was reported.
A bus driver reported golf ball size hail in Hootontown. Minor damage was reported to the bus and some roofs.
A 24 hour storm total of 2.60 inches of rainfall was reported.
The public reported that 2.00 inches of rain fell in approximately 45 minutes, between 8 and 9am.
A Cooperative Observer reported that 2.42 inches of rain fell in approximately one and a half hours.
The public reported that approximately 4.00 inches of rain fell in approximately and hour and 45 minutes.
Quarter size hail was reported four miles NNE of Springfield between Chestnut Avenue and MM Highway exit on Interstate 44.
The public reported that 1.50 inches of rain fell in approximately 45 minutes.
The public reported that 2.30 inches of rain fell in approximately 1 hour.
A Cooperative Weather Observer reported that 2.30 inches of rain fell in approximately 1 hour.
A citizen measured 1.00 inch in 15 minutes, between Everton and Greenfield. An Additional 0.50 inches the second 15 minutes totaling 1.5 inches in 30 minutes.
A flooded roadway and large tree were reported down at the low-water crossing near the intersection of Highway U and Sliver Lake Branch Creek.
The city Emergency Management reported a rain gauge in north Nixa recorded 3.60 inches of rain fall with a maximum hourly rain rate of 0.85 inch per hour. There were multiple reports of flooded roadways in the Nixa, including Tracker Road near Raspberry Court, Phillips Road between Tracker Road and Guin Road, and Tracker Road near Sanders Valley Road.
A Ham Operator reported that south of North Street there was 10 inches of water over road by High Point School.
Rainfall totaling 2.04 inches fell in six hours.
A HAM Operator by the Springfield Nature Center reported a rail total of 2.50 inches.
A citizen reported of flooding to the bottom of the doors on an S10 pickup on highway 176 at Hedrick Lane.
The road was reported on state highway O at the low-water crossing of Tory Creek.
The low water bridge just to the west of North Main and Murphy Roads was closed due to flooding.
The road was flooded over at the Medical Spring Road crossing with the East Prong of Goff Creek, south of highway V near Ponce de Leon.
A storm total of 5.75 inches of rainfall was reported.
A propane tank was washed away and flood waters entered a church.
The COCORAHS station MO-CD-4 reported a rainfall total of 3.59 inches.
The COCORAHS station MO-CR-20 reported a rainfall total of 5.05 inches.
The COCORAHS station MO-GR-48 reported a rainfall of 3.03 inches.
The COCORAHS station MO-SE-34 reported a rainfall total of 3.62 inches.
The COCORAHS station MO-CR-50 reported a rainfall total of 5.16 inches.
The Mesonet station FINM7 reported rainfall of 4.11 inches.
The Mesonet station BLVRB reported 3.16 inches of rainfall.
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: 780771, 780789, 780721, 780722, 780724, 780790, 780791, 780772, 780792, 780773, 780793, 780725, 780794, 780795, 780726, 780727, 780735, 780736, 780796, 780797, 780798, 780799, 780800, 780801, 780140, 780802, 780803, 780810, 780811, 780141, 780804, 780805, 780808, 780809, 780728, 780729, 780730, 780813, 780814, 780731, and more.