A strongly forced line of storms moved across the plains and into the Missouri Ozarks during the late afternoon into the evening. As the storms moved into the region severe storms produced widespread wind damage with winds measured as high as 61 mph.
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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.
A strongly forced line of storms moved across the plains and into the Missouri Ozarks during the late afternoon into the evening. As the storms moved into the region severe storms produced widespread wind damage with winds measured as high as 61 mph. Numerous trees and power lines were downed by high winds, one of which fell into a home injuring 3 residents. The storms took advantage of a very moist airmass to result in very efficient rainfall. Rainfall was measures from 2 to 4 inches across much of southwestern Missouri with local reports in excess of 6 inches in Lawrence County.
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 13, 2:04 AM CST, 2 hours 13 minutes earlier.
Area Forecast Discussion National Weather Service Springfield MO 304 AM CDT Sun Aug 13 2023 Key Messages: 1. Severe thunderstorms expected tonight. All modes of severe weather are possible, along with flooding. 2. A Flood Watch is in effect for a large portion of the area from 7 PM tonight through 7 AM Monday morning. 3. Below normal temperatures in the upper 70s into the 80s will occur through the first half of next week before temperatures climb again into the 90s by next weekend. .SHORT TERM...(Today and tonight) Issued at 250 AM CDT Sun Aug 13 2023 Current surface analysis depicts a frontal boundary bisecting central Missouri, with satellite imagery showing increasing cloud cover across the area. Current radar at 245 AM shows some showers forming over our area, with thunderstorms in northeast OK expected to continue pushing into our CWA within the next hour. This activity is expected to continue through the early morning hours, posing a marginal risk for severe thunderstorms. Damaging winds and hail will be the primary threat with this morning activity, with a low end flooding threat as well. The main show looks to be later this evening into the overnight hours as a potent shortwave trough pushes from the Northern Plains and an associated cold front sweeps through the area from NW to SE. Both severe weather and flash flooding will be a concern with this system. Severe Weather Threat Later This Evening: Showers and thunderstorms that occur this morning should diminish by the early afternoon, allowing for daytime heating to further destabilize the atmosphere. 30-50 kt midlevel westerly flow combined with a 30-40kt southwesterly low level jet will lead to ample shear supporting strong to severe storms. SPC Day 1 Outlook highlights the majority of the CWA in an Enhanced Risk for this time period, with damaging wind gusts up to 70 mph as the primary hazard. With large hail parameters between 4-6, large hail up to golf balls will be a secondary threat, especially with any supercells that form ahead of the cold front. Forecast sounding wind profiles show veering winds with curved hodographs, which would also support the potential for a few tornadoes as well. Flooding Threat: Although the frontal passage is expected to be more progressive, there is a chance for storms to begin training west to east. Ensembles show good agreement of mean PWAT values around and exceeding 2.0 inches, which is above the 90th percentile, and approaching the climatological maximum. HREF LPMM shows a wide swath of QPF between 3-5 inches, with localized amounts up to 7 inches. WPC has highlighted the Missouri Ozarks in a Moderate Risk ERO to account for this potential. Decided to issue a Flood Watch for a large portion of the area from 7 PM tonight through 12 AM Monday morning. Additional rainfall will occur behind the frontal passage before the area begins clearing by Monday morning after sunrise. .LONG TERM...(Monday through Saturday) Issued at 250 AM CDT Sun Aug 13 2023 Once the activity moves out of the area late Monday morning, the remainder of the work week looks pleasant, with highs in the mid 70s to low 80s through Wednesday, and into the upper 80s to low 90s (mainly west of Hwy 65) Thursday and Friday. A ridging pattern will build over the area towards the end of the forecast period, bringing warmer temperatures over the weekend. Highs look to range in the 90s, with heat indices surpassing 100 degrees for portions of the area Saturday and Sunday. && .AVIATION...(For the 06Z TAFS through 06Z Sunday night) Issued at 1225 AM CDT Sun Aug 13 2023 Showers and thunderstorms are expected to build into the area through the early morning hours, with MVFR conditions likely as a result of reduced visibilities and ceilings. Some showers may linger into the late morning before a brief lull in activity occurs during the afternoon hours. Additional showers and thunderstorms are then expected to spread across the area during the evening and into the overnight hours along a cold frontal passage. These storms will have the potential to become strong to severe, with all modes of severe weather possible. MVFR to IFR conditions will likely be a result of the stronger storms. Some discrepancies still exist regarding timing and severity. Otherwise, winds are currently light out of the east/southeast at the TAF sites, and will become more southerly during the afternoon before shifting out of the northwest behind the frontal passage on Monday. && .SGF WATCHES/WARNINGS/ADVISORIES... MO...NONE. KS...NONE. && SHORT TERM...Melto LONG TERM...Melto AVIATION...Melto
Hazardous Weather Outlook National Weather Service Springfield MO 819 PM CDT Sat Aug 12 2023 KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-140130- 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- 819 PM CDT Sat Aug 12 2023 This Hazardous Weather Outlook is for portions of the Missouri Ozarks and extreme southeast Kansas. .DAY ONE...Tonight. Weather hazards expected... Limited thunderstorm wind damage risk. Significant lightning risk. Limited excessive heat risk. Elevated excessive rainfall risk DISCUSSION... Another round of showers and thunderstorms is expected to move in from the west late tonight. Strong to severe storms with quarter size hail, 60 mph winds, and localized flooding are possible. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Strong to severe thunderstorms are possible Sunday morning and again Sunday night. There is considerable uncertainty in how strong storms will be, especially with the second round in the afternoon to overnight hours. Large hail, damaging winds, and localized flooding are the primary concerns, but a low end tornado threat also exists in the afternoon. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed through tonight. && More detailed information can be accessed at: http://www.weather.gov/sgf/dsspacket This product in graphical format...along with other weather... hydrological and climate information...at http://www.weather.gov/sgf Perez
Special Weather Statement
National Weather Service Springfield MO
328 AM CDT Sun Aug 13 2023
MOZ093-101-130915-
Newton MO-McDonald MO-
328 AM CDT Sun Aug 13 2023
...STRONG THUNDERSTORMS WILL IMPACT SOUTHWESTERN NEWTON AND WESTERN
MCDONALD COUNTIES THROUGH 415 AM CDT...
At 327 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 7 miles southeast of Wyandotte to South West
City. Movement was east at 20 mph.
HAZARD...Wind gusts up to 50 mph and pea size hail.
SOURCE...Airport Observation.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Anderson, Noel, Dodge, Goodman, South West City, Pineville, Lanagan,
Cayuga and Tiff City.
This includes Interstate 49 between mile markers 1 and 18.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3678 9462 3685 9443 3650 9431 3650 9462
TIME...MOT...LOC 0827Z 255DEG 18KT 3670 9467 3651 9460
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
TitusSpecial Weather Statement
National Weather Service Springfield MO
405 AM CDT Sun Aug 13 2023
MOZ093-101-130945-
Newton MO-McDonald MO-
405 AM CDT Sun Aug 13 2023
...STRONG THUNDERSTORMS WILL IMPACT SOUTHEASTERN NEWTON AND EASTERN
MCDONALD COUNTIES THROUGH 445 AM CDT...
At 405 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Goodman to near Pineville to near Bella
Vista. Movement was northeast at 30 mph.
HAZARD...Wind gusts of 50 to 55 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Bella Vista, Big Sugar Creek State Park, Fairview, Stella, Powell and
Rocky Comfort.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3650 9431 3650 9432 3661 9436 3672 9441
3688 9407 3653 9407 3649 9430
TIME...MOT...LOC 0905Z 244DEG 28KT 3671 9437 3664 9430 3653 9427
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...55 MPH
TitusSpecial Weather Statement
National Weather Service Springfield MO
503 AM CDT Sun Aug 13 2023
MOZ102-131030-
Barry MO-
503 AM CDT Sun Aug 13 2023
...STRONG THUNDERSTORMS WILL IMPACT SOUTHWESTERN BARRY COUNTY THROUGH
530 AM CDT...
At 502 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Washburn to Seligman to near Gateway.
Movement was north at 30 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Roaring River State Park, Cassville, Seligman, Exeter, Butterfield,
Washburn and Wayne.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3682 9396 3676 9382 3664 9370 3650 9380
3650 9405 3651 9405
TIME...MOT...LOC 1002Z 198DEG 28KT 3658 9401 3653 9392 3645 9388
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
TitusThe Springfield radar (KSGF), 74 km away, was scanning. The volume nearest the first event began at 10:14 UTC.
14 thunderstorm wind, 8 flash flood, 4 flood, 3 hail. Local standard time, as filed.
Numerous large limbs and trees were reported downed by high winds.
Penny sized hail was reported.
Quarter sized hail was reported.
The AWOS station KHFJ in Monett measured a wind gust of 61mph.
Quarter sized hail was reported via MPing.
Several large trees were reported down and the roof of a metal shop building suffered minor damage.
Heavy rainfall caused significant street flooding in town as the Lost and Little Lost Creeks rose out of their banks.
A large tree was blown onto a home falling through the roof into the living area. Several people were trapped and treated for minor injuries on site after being extracted. Significant damage to the home was reported.
Several city streets were flooded and impassable due to heavy rainfall, stranding vehicles in high water.
Runoff from heavy rainfall was reported inside several industrial buildings near the Neosho Airport.
Multiple large tree limbs in excess of 3 inches in diameter were reported down.
A large tree was reported down near the intersection of 6th and Church Streets.
Heavy rainfall caused several local streets to become flooded.
Medium sized limbs and minor shingle damage was reported.
Highway H near the headwaters of Houseman Creek was flooded and impassable due to excessive runoff for several hours.
Multiple large, 4 to 5 inch, diameter limbs were reported down by high winds.
Minor damage occurred to the roof of a home due to high winds.
A large branch from a maple tree fell on tow vehicles. No significant damage was reported. corrected.
The AWOS station KOZS reported a winds gust of 58mph.
Several large trees were uprooted and many branches were downed by high winds.
Heavy rainfall caused several city streets along Williams Creek to become flooded and impassable.
A large oak tree was snapped off and fell onto power lines causing power outages. Several power poles were also snapped near the base and down blocking Highway T.
A large tree was reported down on a home. Minor damage occurred to the roof and guttering.
State Highway C at Flat Creek was flooded and impassable.
The Spring River at La Russell Rose 6 feet in a few hours, exceeding flood stage and flooding Lawrence County Avenue making it impassable.
Cliff Road was flooded and impassable at Prewitt Creek near the Gasconade River.
Water was flowing over the road on Greenwood Road at the headwaters of the Pomme De Terre River.
State Highway U at Flat Creek was flooded and impassable.
State Highway U was closed due to flooding at Tavern Creek.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2023Every state in 2023This day in weather historyWarnings in Missouri, August 2023
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: 1135311, 1135308, 1135309, 1135316, 1135310, 1135328, 1135293, 1135335, 1135294, 1135295, 1135318, 1135325, 1135296, 1135321, 1135304, 1135323, 1135327, 1135333, 1135324, 1135336, 1135297, 1135334, 1135331, 1135298, 1135300, 1135302, 1135305, 1135306, 1135307.