A shortwave trough moved south from Missouri over parts of the Mid-South. Showers and thunderstorms slowly moved over the area, causing heavy rainfall resulting in flash 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 MEG wrote it up.
A shortwave trough moved south from Missouri over parts of the Mid-South. Showers and thunderstorms slowly moved over the area, causing heavy rainfall resulting in flash 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 Memphis, TN wrote its last area forecast discussion before the first event at Aug 5, 12:03 PM CST, 1 hour 42 minutes earlier.
Area Forecast Discussion National Weather Service Memphis TN 103 PM CDT Fri Aug 5 2022 .UPDATE... Updated to include 18Z Aviation Discussion. && .PREV DISCUSSION... /issued 602 AM CDT Fri Aug 5 2022/ PREV DISCUSSION... /issued 421 AM CDT Fri Aug 5 2022/ A persistent weather pattern will prevail across the Midsouth through Saturday. A weak upper level shear axis will extend from east Arkansas to the lower Ohio River valley, bisecting upper level ridge centers over the southern plains and the Southeast. Early morning GOES water vapor imagery showed a shortwave circulation dropping south from southern Missouri. This shortwave may enhance synoptic lift in the vicinity of the shear axis over northeast Arkansas, the Missouri bootheel and northwest Tennessee today. Precipitable water (PWAT) values nearing 2.25 inches (99th percentile of climatology), collocated with the shear axis will enhance chances for locally heavy rainfall from slow-moving scattered thunderstorms. A similar scenario is anticipated for Saturday, but with the shear axis positioned further east over the Tennessee River valley. To the west, heat indices will begin edging up to near 105 over the delta south and west of Memphis Saturday afternoon. This trend will continue on Sunday, with heat indices near or in excess of 105 possible into the Memphis metro. Models continue to depict a persistent weakness in the upper ridge. Difficult to say at this time where this weakness will be most pronounced. Guidance consensus suggests thunderstorms will likely favor areas east of the Mississippi River on Sunday, while to the west, a Heat Advisory may be needed. Looking to next week, ensemble means from the GFS and ECMWF depict a subtropical upper level ridge centered over the central high plains and central Rockies. Under this scenario, weak northwest flow aloft will prevail over the Midsouth. Midlevel temperatures will not be sufficiently warm enough to cap daytime thunderstorm development, given continued mid 70s surface dewpoints. A weak front may settle in on Thursday, providing a focus for thunderstorms, followed by a slight moderation in dewpoints north of I-40 late next week. PWB && .AVIATION... 18Z TAFs Scattered showers and a few embedded thunderstorms (VCTS) may persist at least into mid afternoon at MEM/MKL/JBR with diminishing chances later this afternoon into this evening. MVFR conditions should also improve later this afternoon into this evening. Patchy fog may develop again at MKL late tonight. Otherwise, VFR conditions expected for the remainder of the period. S/SSW winds 8-10 kts will become light tonight and increase to 7-10 kts on Saturday. CJC && .MEG WATCHES/WARNINGS/ADVISORIES... AR...None. MO...None. MS...None. TN...None. &&
Hazardous Weather Outlook National Weather Service Memphis TN 335 AM CDT Fri Aug 5 2022 ARZ009-018-026>028-035-036-048-049-058-MOZ113-115-MSZ001>017- 020>024-TNZ001>004-019>022-048>055-088>092-061045- Alcorn-Benton MS-Benton TN-Calhoun-Carroll-Chester-Chickasaw-Clay- Coahoma-Craighead-Crittenden-Crockett-Cross-DeSoto-Decatur- Dunklin-Dyer-Fayette-Gibson-Greene-Hardeman-Hardin-Haywood- Henderson-Henry-Itawamba-Lafayette-Lake-Lauderdale-Lee AR-Lee MS- Madison-Marshall-McNairy-Mississippi-Monroe-Obion-Panola-Pemiscot- Phillips-Poinsett-Pontotoc-Prentiss-Quitman-Shelby-St. Francis- Tallahatchie-Tate-Tippah-Tipton-Tishomingo-Tunica-Union-Weakley- Yalobusha- 335 AM CDT Fri Aug 5 2022 This hazardous weather outlook is for portions of East Arkansas... the Missouri Bootheel...North Mississippi...and West Tennessee. .DAY ONE...Today and Tonight Slow-moving, scattered thunderstorms will produce a risk of localized flash flooding today, mainly over west Tennessee, northeast east Arkansas, and the Missouri bootheel. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Locally-heavy rainfall will be possible into early next week, associated with isolated to scattered thunderstorms. Afternoon heat indices may reach or exceed 105 degrees on Sunday in the Memphis metro, and the delta of east Arkansas and northwest Mississippi. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated at this time. PWB
The Memphis radar (KNQA), 90 km away, was scanning. The volume nearest the first event began at 19:46 UTC.
1 flash flood. Local standard time, as filed.
A few stalled cars and numerous streets flooded in Brookland.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arkansas in 2022Every state in 2022This day in weather historyWarnings in Arkansas, August 2022
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: 1044673.