The remnants of a weak mesoscale convective vortex (MCV) propagated south over the Mississippi River in the early afternoon hours. The lift from the MCV combined with instability and increasing tropical moisture, resulted in a few showers and thunderstorms.
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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.
The remnants of a weak mesoscale convective vortex (MCV) propagated south over the Mississippi River in the early afternoon hours. The lift from the MCV combined with instability and increasing tropical moisture, resulted in a few showers and thunderstorms. Coverage was isolated. The increasing moisture fueled torrential downpours over urbanized areas, leading to a quick flash flooding threat.
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 8, 11:42 AM CST, 2 hours 1 minute earlier. Its key messages:
Area Forecast Discussion National Weather Service Memphis TN 1242 PM CDT Fri Aug 8 2025 ...New DISCUSSION, AVIATION, FIRE WEATHER... .KEY MESSAGES... Updated at 1241 PM CDT Fri Aug 8 2025 - A warming trend will continue through the weekend with afternoon highs in the low to mid 90s. - Rain chances remain low (up to 30 percent) this weekend, but increase through next week. By Monday, daily precipitation chances will be 40 to 50 percent through the end of the week. && .DISCUSSION... (This afternoon through next Thursday) Issued at 1241 PM CDT Fri Aug 8 2025 Morning visible satellite reveals another quiet morning across the region with a few overnight showers having dissipated. In the meantime, high pressure continues to build as upper height rises occur behind the weak trough that has moved to our east over the last few days. As such, temperatures have already risen and highs are anticipated to be in the 90s area-wide starting this afternoon. With increasing temperatures, surface theta e will also begin rising as tropical moisture remains throughout the region allowing diurnal showers to return. Although CAMs aren't very confident on rain this afternoon, morning upper air profiles from surrounding regions already show > 1000 J/kg of MUCAPE which will only grow through the day. Additionally, a weak remnant MCV is propagating south over the Mississippi River, which could be an additional focus point for deeper convection this afternoon. Regardless, a few showers or thunderstorms appear likely this afternoon across Tennessee and northeast Mississippi, diminishing in strength after sunset. Highs will stay in the 90s this weekend as ridging persists or even strengthens into next week. Although upper moisture has continued to be lacking, daily showers have managed to develop through the week. PoPs may be underdone for tomorrow afternoon but high forecast uncertainty precludes an increase in PoPs at this time. NBM guidance has been trending towards higher PoPs, bringing 30% to portions of northeast Mississippi, a significant uptrend from 24 hours ago. This trend is seen moving forward through the forecast as well with upwards of 50% across north Mississippi Monday and Tuesday. The primary driver of this increasing likelihood in precipitation is an increase in upper moisture as ridging builds to our east, allow for moisture advection from lower latitudes. Therefore, next week is looking wetter with daily showers and storms across the majority of the region starting Monday. As precipitation chances increase next week, temperatures are still forecast to stay in the mid 90s. Heat indices remain around 100 F through the period with isolated areas reaching 105 F. Some uncertainty still exists within the temperature forecast with higher rain chances, which could mute high temperatures in some areas. Therefore, heat headlines do not appear likely at this time across the Mid-South, but temperatures will still be seasonably warm and uncomfortable through the end of the period. && .AVIATION... (18Z TAFS) Issued at 1241 PM CDT Fri Aug 8 2025 A Meso Convective Vortex (MCV) or small upper level low pressure system, currently near KHKA, will continue to travel south along the Mississippi River this afternoon. -SHRAs and -TSRAs will develop along the eastern edge and could impact MEM (30% chance) through mid afternoon. SHRAs and TSRAs will continue to affect MKL in the short term as well. After sundown, showers and storms will end and VFR conditions will prevail with light southerly winds. AC3 && .FIRE WEATHER... Issued at 1241 PM CDT Fri Aug 8 2025 No fire weather concerns this period as light 20ft winds and MinRH values around 50 percent persist for at least the next 7 days. && .MEG WATCHES/WARNINGS/ADVISORIES... AR...None. MO...None. MS...None. TN...None. && PUBLIC FORECAST...JAB AVIATION...AC3
Special Weather Statement
National Weather Service Memphis TN
234 PM CDT Fri Aug 8 2025
MSZ002-003-TNZ089-090-082000-
Marshall MS-Benton MS-Hardeman TN-Fayette TN-
234 PM CDT Fri Aug 8 2025
...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN MARSHALL...
NORTHWESTERN BENTON...SOUTHEASTERN FAYETTE AND SOUTHWESTERN HARDEMAN
COUNTIES THROUGH 300 PM CDT...
At 234 PM CDT, Doppler radar was tracking a strong thunderstorm near
Lagrange, or 18 miles southwest of Bolivar, moving southwest at 15
mph.
HAZARD...Wind gusts up to 40 mph and penny size 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...
Lamar, Lagrange, Michigan City, Slayden, Rossville, Moscow,
Williston, Grand Junction, La Grange, Saulsbury, Hudsonville, Early
Grove, Hays Crossing, Pattersonville, Forty Five, and Ghost River
State Natural Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3523 8926 3506 8908 3483 8936 3504 8958
TIME...MOT...LOC 1934Z 048DEG 11KT 3509 8926
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH
AC3The Memphis radar (KNQA), 66 km away, was scanning. The volume nearest the first event began at 19:41 UTC.
1 thunderstorm wind, 1 flash flood. Local standard time, as filed.
Several trees down at Ames Plantation.
Several locations in Midtown Memphis had water over the road, impeding traffic. Lemaster Street and the Crosstown area were flooded.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2025Every state in 2025This day in weather historyWarnings in Tennessee, August 2025
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: 1289526, 1289525.