A wake low behind a decaying area of rain developed over north Alabama and southern middle Tennessee during the early morning hours of the 10th. Atmospheric pressure drops of 4-5 mb in about an hour resulted in strong and gusty southeast winds.
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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 wake low behind a decaying area of rain developed over north Alabama and southern middle Tennessee during the early morning hours of the 10th. Atmospheric pressure drops of 4-5 mb in about an hour resulted in strong and gusty southeast winds. Wind gusts of over 35 mph and in some cases over 45 mph were observed in this region. Several trees and a couple of power poles were knocked down as a result in Colbert County.
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 Apr 9, 11:53 PM CST, 7 minutes earlier.
Area Forecast Discussion National Weather Service Huntsville AL 1253 AM CDT Wed Apr 10 2024 ...New AVIATION... .NEAR TERM... (Rest of tonight) Issued at 926 PM CDT Tue Apr 9 2024 After a rainy afternoon across much of northern AL and southern middle TN, the slow moving boundary has lifted north of the forecast area. While some light drizzle or sprinkles may occur over the next few hours, for the most part the heavier rain will remain to our west until after midnight. Latest radar reflectivity shows light to moderate rainfall over northern MS with a MCV across central MS driving a stronger bowing severe thunderstorm line. As the rain shield pushes east, a more stable environment is in place and the general trend should weaken. However, an isolated thunderstorms cannot be ruled out. Latest suite of CAMs have a lot of the rain dissipating around morning. && .SHORT TERM... (Wednesday through Thursday night) Issued at 231 PM CDT Tue Apr 9 2024 An even more substantial break in the activity is expected towards daybreak into the morning hours, as the warm front remains well north of the area. Much stronger warm air advection is expected during the day and clouds may be mainly mid/high clouds in the morning. These two things will likely allow temperatures to climb into the lower to mid 70s on Wednesday. By the early to mid afternoon hours, very strong low level forcing and upper level diffluence develops over the area as the surface low deepens to around 996 mb and moves north into southern Arkansas. As this occurs, it looks like this storm system develops a secondary warm front along it. Models have been consistent developing a large area of showers and thunderstorms along and ahead of it during the early afternoon hours stretching from central AR SSE into western MS and eastern LA. Good instability looks to be in place over those areas. However, further east, surface based instability is much more meager (only on the order of 100 to 400 J/KG primarily) and that is briefly around 4 PM to around 7 PM. However, we may remain barely surface based into the evening hours. The break in rainfall late tonight into tomorrow morning may keep flash flooding from being too much of a concern. However, 1 to 3 inches of rainfall still looks possible tomorrow afternoon into tomorrow night. The main window for severe weather is between 3 PM and 10 PM on Wednesday and is a very low and conditional threat right now. Damaging winds and a tornado look like the main threats. By Thursday morning, the surface front should be well into Georgia as the surface low with this system continues to move NNE into the Indiana/Illinois. This will likely keep light showers in the forecast through the day on Thursday. Not much cold air behind this system, but highs with cloud cover and rain will likely only climb into the 53 to 68 degree range. Lows will likely drop into the lower to mid 40s Thursday night. && .LONG TERM... (Friday through Tuesday) Issued at 347 AM CDT Tue Apr 9 2024 Clear skies and cooler temperatures are forecast to wind out the work week with highs Fri in the mid 60s. Another cool night Fri night with lows in the 40s. High pressure over the area Sat and abundant sun should help boost high temperatures into the low/mid 70s. Even warmer for Sun/Mon with highs in the upper 70s Sun and around 80 Mon. A return of moisture and instability will bring lower end rain chances on Monday. && .AVIATION... (06Z TAFS) Issued at 1253 AM CDT Wed Apr 10 2024 Inclement flying weather will continue across the central TN Valley. Into the mid/late morning, periods of showers and a few thunderstorms will continue as a decaying warm front moves northward. A break in shower activity is expected in the late morning to early afternoon. Afterwards, convection preceding a powerful system developing over TX will bring more showers and storms. A strong wind field forming around this system will result in strong winds developing in the afternoon and tonight. Guidance has SE winds of 15-25kt with gusts of 25-35kt, which may cause crosswind issues at terminals with north to south oriented runways. The heaviest showers should taper off in the late afternoon. Additional showers are possible into late Wed evening. VFR minimums in the overnight should become MVFR this afternoon with the activity, with brief reductions to IFR or lower in the heavier showers and storms. && .HUN WATCHES/WARNINGS/ADVISORIES... AL...None. TN...None. && NEAR TERM...GH SHORT TERM....KTW LONG TERM....KTW AVIATION...RSB
The national radar mosaic for the moment the first event began.
1 strong wind. Local standard time, as filed.
Trees were reported to be knocked down at least eight locations. Power poles or lines were knocked down at two locations.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Alabama in 2024Every state in 2024This day in weather historyWarnings in Alabama, April 2024
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: 1173666.