Several clusters of slow moving thunderstorms produced heavy rainfall and lightning along the I-85 corridor.
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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 BMX wrote it up.
Several clusters of slow moving thunderstorms produced heavy rainfall and lightning along the I-85 corridor.
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 Birmingham, AL wrote its last area forecast discussion before the first event at Sep 10, 2:51 PM CST, 22 minutes earlier.
Area Forecast Discussion National Weather Service Birmingham AL 351 PM CDT Mon Sep 10 2018 .UPDATE... For Fire Weather. && .SHORT TERM... Today and tonight. A surface cold front has entered the northwestern part of the forecast area this morning, supported by an upper-level trough extending from the Great Lakes all the way to South Texas. The main portion of the trough will remain to our north and eject northeastward over the next 24 hours, leaving behind a weak shortwave near the Ark-La-Tex. This will result in the front stalling near the I-20 corridor later today and into tonight. Though current radar imagery indicates little in the way of shower activity, another round of convection should develop by late morning near I-59 with the aid of daytime heating and surface convergence. Additional scattered pre-frontal development is also expected. Veering 850-700mb winds suggest that bands or clusters developing right along the front will propagate eastward ahead of the front during the afternoon hours, with the highest rain chances shifting east of I-59. Some convection could linger into the evening hours south of I-20, and very little activity expected overnight. 87/Grantham .LONG TERM... Tuesday through Thursday. Lingering effects from a slow-moving frontal boundary will be felt across central Alabama as we head into the middle of the week. Most focus for lift will extend along this axis from the southwest to the northeast, with pooling of lower tropospheric moisture along and south. Expecting the driest air to be north of the I-20/I-59 corridor with slightly lower surface dewpoints (upper 60s) and PWs ~1.7-1.8", as opposed to lower 70 dewpoints and PWs ~2.0-2.1" elsewhere. With afternoon/evening destabilization, scattered to numerous showers and thunderstorms will develop and have accounted for PoPs in the 60-70% range for Tuesday, with a slight decrease Wednesday (50-60%). The effects of increased chances for precip and higher sky cover will help to decrease our overall expected high temperatures on Tuesday with most of the forecast area seeing mid to upper 80s, perhaps some close to 90 in the far southeast. Expecting warmer conditions and some rebound in surface moisture for Thursday, though have lower PoPs due to higher mean RH being confined to our southern counties as drier mid-level air advects into the region via northeasterly flow. By Thursday evening, Hurricane Florence is expected to be nearing or making landfall per latest NHC forecasts. It's positioning at this time will aid the ridge/high pressure system in the northeast CONUS in transporting the drier airmass into the area. Friday through Monday. A lot of our weather through the extended period will depend upon spatial/temporal details of Hurricane Florence and its track after making landfall along the Carolina coast. Cyclonic flow around the remnant circulation would help maintain steady advection of drier/more stable air into our area throughout this period, if it remains to our east. For now, Friday PoPs have accounted for this with 20-30% chance (similar to Thursday) for afternoon/evening showers and thunderstorms, with the best probabilities in the south where the best moisture & instability will reside. Have lowered PoPs to 10-20% for the weekend as current forecast expectations continue this trend of drier air via mass subsidence from upper-level ridging and the remnants of Florence, though forecast confidence on specific details are low and will likely change in the coming days. Overall, the wetter pattern for mid-week looks to transition to drier and warmer conditions as we head towards the weekend. Not expecting any significant impacts from Florence to our forecast area at this time. 40/Sizemore && .AVIATION... 18Z TAF Discussion. IFR/MVFR cig still around due to surface frontal boundary across the area from SW to NE. Shower activity and some TSRA will be possible this afternoon. Activity should decrease by late evening. With the boundary expected to stall, moisture will remain up and more low cigs and some patchy fog will be possible again for late tonight into the morning. 08 && .FIRE WEATHER... A frontal boundary will remain across Central Alabama over the next couple of days, keeping rain chances elevated for many areas through mid week. With high minimum relative humidity values and expected precipitation, no fire weather is expected at this time. && .PRELIMINARY POINT TEMPS/POPS... Gadsden 68 87 68 89 70 / 30 50 30 40 20 Anniston 69 88 69 90 71 / 40 60 30 50 20 Birmingham 68 88 71 90 72 / 20 50 30 50 20 Tuscaloosa 68 88 71 90 72 / 20 50 40 60 20 Calera 68 86 69 88 71 / 30 60 40 60 20 Auburn 71 87 71 88 72 / 50 60 40 60 20 Montgomery 72 89 72 91 73 / 50 60 30 50 20 Troy 71 89 71 90 72 / 50 50 20 50 20 && .BMX WATCHES/WARNINGS/ADVISORIES/... None. && 87/40/08
Hazardous Weather Outlook National Weather Service Birmingham AL 404 AM CDT Mon Sep 10 2018 ALZ011>015-017>050-111215- Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun-Cherokee- Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair-Talladega- Clay-Randolph-Sumter-Greene-Hale-Perry-Bibb-Chilton-Coosa-Tallapoosa- Chambers-Marengo-Dallas-Autauga-Lowndes-Elmore-Montgomery-Macon- Bullock-Lee-Russell-Pike-Barbour- 404 AM CDT Mon Sep 10 2018 This Hazardous Weather Outlook is for the counties served by the National Weather Service office in Birmingham. .DAY ONE...Outlook through Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Activation of storm spotters and emergency management is not expected at this time.
The Maxwell AFB radar (KMXX), 7 km away, was scanning. The volume nearest the first event began at 21:11 UTC.
1 lightning, 1 flash flood. Local standard time, as filed.
Large home on Greenwood Road destroyed by fire started by lightning.
A portion of North Bridge Street flooded and impassable.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Alabama in 2018Every state in 2018This day in weather historyWarnings in Alabama, September 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: 785758, 785759.