A cluster of strong to severe thunderstorms dropped south from middle Tennessee into north Alabama. Strong winds associated knocked down a few trees.
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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 HUN wrote it up.
A cluster of strong to severe thunderstorms dropped south from middle Tennessee into north Alabama. Strong winds associated knocked down a few trees. Power outages (up to 20,000 people affected) were reported over a large part of central and northwest Madison County. At least one foot of flood water was reported on one northern Madison County roadway.
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 Huntsville, AL wrote its last area forecast discussion before the first event at Jul 12, 8:27 AM CST, 2 hours 11 minutes earlier.
Area Forecast Discussion National Weather Service Huntsville AL 927 AM CDT Tue Jul 12 2022 ...New NEAR TERM... .NEAR TERM... (Rest of Today) Issued at 927 AM CDT Tue Jul 12 2022 Only significant change in the forecast with this update is to slow down the arrival of PoPs later this afternoon/evening. While a diurnally driven storm is possible this afternoon, confidence is quite low for most of the forecast area due to a stratus deck lingering around Northern Alabama this morning. If a storm was to develop, it would be across NW Alabama where clear skies prevail. Outside of a low storm chance this afternoon, another hot and humid day is forecast. Afternoon highs will largely depend on how far west the stratus deck gets later today. Where there is clearing, expect temperatures to get into the upper 90s with heat index values approaching heat advisory criteria. Further east, highs only top out in the lower 90s. && .SHORT TERM... (Tonight through Friday) Issued at 447 AM CDT Tue Jul 12 2022 Very late in the afternoon (between 5 and 7 PM), expect the front to have settled southward and be approaching our southern middle Tennessee counties. Forcing is not very strong with this front, but there should be just enough forcing and plenty of instability in place (2000 to 3500 J/K of MUCAPE) for shower and thunderstorm development near and along the front. Models hint at a decent microburst type of setup with good low level lapse rates as the front approaches and moves into southern middle Tennessee and into northern Alabama. Likely not high end, but strong enough to possibly produce a severe microburst of around 60 mph. Very high PWAT values between 1.8 and 2.1 inches are forecast along and just ahead of this front in several models. Storms may train from west to east over some areas, so we will have to watch for locally heavy rainfall and the potential for very localized flooding tonight. The area of low pressure and its associated convergence boundary do not move much on Wednesday. However, the front does eventually move south of the area by Wednesday evening. Not sure how much deeper convection we will see near and east of the I-65 corridor for sure given some stabilizing effects of cloud cover near this boundary. However, further west and in southern middle Tennessee, expect more insolation to occur. Highs in NW Alabama could top out in the 90 to 95 degree range. This might provide for better instability near and west of the I-65 corridor for some stronger storm development Wednesday afternoon into the early evening before sliding south of the area after midnight. So a severe storm looks less likely overall, but not sure one could not occur in NW Alabama with better instability. Main threat would be a 50 to 60 mph microburst. Do expect coverage of showers and storms to increase in the afternoon and most locations should get some additional rainfall. Isolated to widely scattered showers or thunderstorms could linger mainly south of the Tennessee River behind the front into Thursday and Friday. Not expecting these to be very strong. Cooler temperatures are expected with highs in the mid 80s to lower 90s and lows in the mid 60s. && .LONG TERM... (Friday night through Monday) Issued at 447 AM CDT Tue Jul 12 2022 Temperatures should remain more tolerable Friday night through Saturday with some isolated to widely scattered showers or thunderstorms possible in the afternoon hours. Highs in the mid 80s to lower 90s should continue with lows slowly warming into the 65 to 70 degree range by Saturday night. Another frontal boundary approaches the area Saturday night into Sunday. This should provide another opportunity for higher chances of decent rainfall. This front stalls north of the area, as several disturbances move along it via northwest flow into early next week. This should keep us in a cooler and somewhat wetter period again. && .AVIATION... (12Z TAFS) Issued at 620 AM CDT Tue Jul 12 2022 MVFR CIGS are expected to continue at KHSV through 17Z. Left them out of KMSL, but if satellite trends continue there, an amendment to include MVFR CIGS may need to be issued. Any clouds should lift or dissipate around 17Z at both TAF sites and VFR conditions should return. A PROB30 group at both terminals was included from 00Z to 06Z, for -TSRA development ahead of a front moving south into the area. Towards daybreak, we expect -TSRA chances to increase (after 11Z). For now included a MVFR tempo group for -TSRA activity at both terminals after 11Z. && .HUN WATCHES/WARNINGS/ADVISORIES... AL...None. TN...None. && NEAR TERM...GH SHORT TERM....KTW LONG TERM....KTW AVIATION...KTW
Hazardous Weather Outlook National Weather Service Huntsville AL 449 AM CDT Tue Jul 12 2022 ALZ001>010-016-TNZ076-096-097-131000- Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan- Marshall-Jackson-DeKalb-Cullman-Moore-Lincoln-Franklin TN- 449 AM CDT Tue Jul 12 2022 This Hazardous Weather Outlook is for north central Alabama, northeast Alabama, northwest Alabama and southern middle Tennessee. .DAY ONE...Today and tonight. Isolated to scattered thunderstorms associated with an approaching weak cold front will begin to impact locations from southern middle Tennessee into extreme north Alabama very late this afternoon into the evening hours. Some of the strongest storms could produce wind gusts of 50 to 60 mph, frequent lightning, and locally heavy rainfall that could lead to very localized flooding. The front will slow down over the area overnight, keeping scattered showers and thunderstorms over the area overnight. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. This front will slowly push south of the area during the afternoon into the evening hours on Wednesday. Some strong storms producing wind gust of 50 to 55 mph, frequent lightning, and locally heavy rainfall that could lead to very localized flooding will be possible. Isolated to scattered thunderstorms will linger over locations mainly south of the Tennessee River behind the front Thursday through Saturday. Thunderstorm chances could increase again Sunday into early next week as another front moves into the area. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. 20
The Northeast Alabama radar (KHTX), 51 km away, was scanning. The volume nearest the first event began at 16:37 UTC.
6 thunderstorm wind, 1 flash flood. Local standard time, as filed.
Social media report/video of one foot of flood water on Patterson Lane in multiple locations. Time estimated by radar.
A large tree limb was knocked down and metal roofing was peeled off of a home near the intersection of Highway 53 and Ready Section Road. Time estimated by radar.
A tree was knocked down on Grimwood Road. Time estimated by radar.
Trees and large limbs were knocked down along Pulaski Pike between Grimwood Road and Rigsby Circle. Time estimated by radar.
Two small trees were knocked down into the roadway, closing one lane. The road was off of Research Park Blvd. and north of Oakwood Road. Time estimated by radar.
Multiple large tree limbs up to 12 inches in diameter were knocked down near the intersection of Oakwood Road and Sparkman Drive. Time estimated by radar.
A photo indicated a tree was knocked down on Shady Lane Circle, blocking the street.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Alabama in 2022Every state in 2022This day in weather historyWarnings in Alabama, July 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: 1040301, 1039007, 1039004, 1039009, 1039015, 1039016, 1039019.