A cold front approached the Mid-South during the afternoon hours on July 1, 2021. Numerous showers and thunderstorms developed across the Mid-South along and ahead of the front.
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The episode as NWS MEG wrote it up.
A cold front approached the Mid-South during the afternoon hours on July 1, 2021. Numerous showers and thunderstorms developed across the Mid-South along and ahead of the front. Locally heavy rainfall occurred due to a very moist airmass and slow-moving storms.
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 1, 1:57 PM CST, 1 hour 23 minutes earlier.
Area Forecast Discussion National Weather Service Memphis TN 257 PM CDT Thu Jul 1 2021 .DISCUSSION... A cold front will continue to push into the Mid-South tonight. Numerous showers and thunderstorms are occurring across the Mid-South at this time along and ahead of the front. This will continue for much of the night with focus shifting to North Mississippi during the early morning hours. Locally heavy rainfall will be the main threat from the convection as PWs remain high thus causing storms to be efficient rain producers. In addition, any storms that move slowly will only exacerbate the threat. By Friday morning, lingering convection will continue from the TN/MS state border southward. Over the course of the day, the convection will gradually shift south. Precipitation chances will end by sunset across North Mississippi. Meanwhile, drier air will begin to filter into portions of Northeast Arkansas, the Missouri Bootheel, and Northwest Tennessee during the afternoon hours. Surface high pressure will begin building into the Mid-South by Friday Night and will remain over the region through the Independence Day weekend. The high will bring low humidity levels to the area as drier air will continue to filter into the region. Highs will be in the mid to upper 80s, but will feel pleasant due to the low humidity. Lows will drop into the upper 50s to mid 60s. An upper ridge will build over the area on Monday. Humidity levels will slowly begin creeping up and by Tuesday could cause a few diurnal showers and thunderstorms to develop across the region. Highs will return to the lower to mid 90s. The ridge won't last long as an upper trough moves into the region Wednesday and Thursday. Chances for showers and thunderstorms will increase across the area. Convection will likely remain scattered in nature. Thus, not every location will see rain. Locations that will remain dry will still see highs around 90 degrees. Locations that do see rain, may be a tad cooler. KRM && .AVIATION... Scattered to numerous SHRAs/TSRAs are developing ahead of an advancing cold front that will push into the area this afternoon and tonight. TSRAs should be through KJBR/KMEM/KMKL early this evening with KTUP a couple hours later. Expect lower cigs and IFR conds to develop across the region overnight. Cigs will gradually improve back to VFR by Friday afternoon. Outside of TSRAs expect SW winds 6-8 kts eventually becoming NE behind the front increasing to 10 kts on Friday. SJM && .MEG WATCHES/WARNINGS/ADVISORIES... AR...None. MO...None. MS...None. TN...None. &&
Hazardous Weather Outlook National Weather Service Memphis TN 347 AM CDT Thu Jul 1 2021 ARZ009-018-026>028-035-036-048-049-058-MOZ113-115-MSZ001>017- 020>024-TNZ001>004-019>022-048>055-088>092-021100- 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- 347 AM CDT Thu Jul 1 2021 This hazardous weather outlook is for portions of East Arkansas... the Missouri Bootheel...North Mississippi...and West Tennessee. .DAY ONE...Today and Tonight Localized heavy rainfall may lead to flash flooding Thursday into Friday. .DAYS TWO THROUGH SEVEN...Friday through Wednesday The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated at this time.
The Memphis radar (KNQA), 30 km away, was scanning. The volume nearest the first event began at 21:19 UTC.
1 flash flood. Local standard time, as filed.
The railroad underpass on Riverside Drive near Crump Boulevard and Interstate 55 was flooded.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2021Every state in 2021This day in weather historyWarnings in Tennessee, July 2021
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: 976054.