Training thunderstorms produced heavy rainfall on already saturated soils across portions of west Tennessee causing flash flooding during the morning hours of July 16th.
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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.
Training thunderstorms produced heavy rainfall on already saturated soils across portions of west Tennessee causing flash flooding during the morning hours of July 16th.
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 Jul 16, 2:49 AM CST, 1 hour 26 minutes earlier.
Area Forecast Discussion National Weather Service Memphis TN 349 AM CDT Mon Jul 16 2018 .DISCUSSION... A cluster of thunderstorms has developed over West Tennessee over the last hour or so...likely along an outflow boundary from convection earlier in the day. See no reason why these should dissipate before sunrise...but they will likely shift into middle Tennessee over the next few hours. Temperatures this morning are running a few degrees cooler than they were at this time last night. Most of the Midsouth is in the Middle 70s. Morning lows will be mostly in the low 70s. Cooler temperatures...ongoing and anticipated rainfall, and abundant cloud cover should all help to keep temperatures below Heat Advisory criteria today. However, dew points remain elevated in the middle 70s, so even a brief period of clear skies will likely result in a surge of heat indices well into the triple digits. It looks like we are beginning a bit of a pattern change across the Midsouth. The surface high pressure and ridge aloft that has dominated our weather pattern for the last week or so is being replaced with northwest flow. As a result, we should see a few days of enhanced pops and slightly cooler temperatures. Widespread organized severe thunderstorms are not expected...however this time of year any thunderstorms are capable of any likely to produce frequent lightning and locally strong wind gusts. We also have to keep an eye to our Northwest in anticipation of an MCS moving into the area. Highs today and tomorrow will likely be in the low 90s...but we may manage to stay out of the 90s during the middle part of the work week as a trough deepens over the East Coast. Guidance has been consistent for the past couple of runs that a significant trough will develop over the Eastern US late in the work week. The GFS is more robust with this scenario. Will lean toward the cooler side of guidance Friday into next weekend. Expect near to slightly below normal temperatures. We may see some rain Friday...but overall next weekend looks dry. 30 && .AVIATION... /06z TAFs/ A few lingering showers are expected to dissipate early this morning, resulting in generally benign conditions late tonight and early Monday. VFR conditions are forecast across most of the area with patchy fog possible at KMKL. Scattered Cu will develop by mid morning with afternoon thunderstorms once again. The best chance for thunderstorms will be at KMEM and KTUP. Any storms that develop will have the potential to produce gusty winds and heavy rainfall, resulting in tempo reductions to ceiling and visibility. Johnson && .MEG WATCHES/WARNINGS/ADVISORIES... AR...None. MO...None. MS...None. TN...None. &&
Hazardous Weather Outlook National Weather Service Memphis TN 358 AM CDT Mon Jul 16 2018 ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115- MSZ001>017-020>024-TNZ001>004-019>022-048>055-088>092-171100- 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-Lawrence- Lee AR-Lee MS-Madison-Marshall-McNairy-Mississippi-Monroe-Obion- Panola-Pemiscot-Phillips-Poinsett-Pontotoc-Prentiss-Quitman- Randolph-Shelby-St. Francis-Tallahatchie-Tate-Tippah-Tipton- Tishomingo-Tunica-Union-Weakley-Yalobusha- 358 AM CDT Mon Jul 16 2018 This hazardous weather outlook is for portions of East Arkansas... the Missouri Bootheel...North Mississippi...and West Tennessee. .DAY ONE...Today and Tonight Strong thunderstorms will be possible today across all of the Midsouth. Damaging winds and heavy rainfall will be the main threats. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday A few strong to severe storms will be possible Tuesday as a cold front influences the region. Damaging winds and heavy rainfall will be the main threats. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated at this time.
The Memphis radar (KNQA), 99 km away, was scanning. The volume nearest the first event began at 10:15 UTC.
3 flash flood. Local standard time, as filed.
A number of roads were flooded in around downtown Jackson. Labuth at Lawrence Switch and Highway 45 Bypass at Airways.
Water over bridges on Lowery Road in Medon.
Fire department rescued 4 to 5 people out of their homes on Swink Road due to flooding.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2018Every state in 2018This day in weather historyWarnings in Tennessee, July 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: 773405, 773406, 773407.