A line of thunderstorms pushed east across north Alabama which produced gusty winds. A tree was knocked down by the winds in Guntersville.
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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 line of thunderstorms pushed east across north Alabama which produced gusty winds. A tree was knocked down by the winds in Guntersville.
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 Aug 9, 10:55 AM CST, 7 minutes earlier.
Area Forecast Discussion National Weather Service Huntsville AL 1155 AM CDT Thu Aug 9 2018 .UPDATE... For 18Z TAFS. && .NEAR TERM...(Rest of Today) Issued at 831 AM CDT Thu Aug 9 2018 Radar shows clusters of thunderstorms over northern MS just beginning to move into northwest AL. This trend should gradually continue through the morning into the midday hours. Dense valley fog along the Cumberland Plateau was rather persistent this morning and had previously added this to the forecast grids. This should dissipate over the next 1-2 hours. The earlier thunderstorms in northeast AL and southern middle TN have shifted east. Have adjusted the morning PoP to account for this decrease, then bring the PoP areawide to 60-70%. Low to mid level lapse rates do not appear very steep, but very heavy rainfall could become a problem if training occurs later today. .SHORT TERM...(Tonight through Saturday Night) Issued at 400 AM CDT Thu Aug 9 2018 The main effects of the initial short wave will begin to wane by this evening as the feature moves off to the ENE. This coupled with the loss of daytime heating will likewise lead to a reduction in the coverage of showers and storms during the evening. However, the next portion of the short wave complex will begin to move back into the area later tonight. This may help to instigate further shower and development, which will also be fed by the development of a weak (~20-25 kt) WSW low-lvl jet and moisture advection. The forecast will feature an initial decrease in POPs for the evening, but then a gradual increase overnight, especially for western areas. The parent mid/upr short wave will move across the area on Friday, leading to perhaps better coverage of showers and thunderstorms. Aiding the broad lift will be divergent flow aloft at the base of an upper jet. Depending on the timing, instability will be sufficient to generate good coverage of thunderstorms, especially during the afternoon, which appears to be most likely in about the eastern half of the area. The short wave will advance quickly to the east, and a sfc front will likely cross the area in its wake late Friday. A slightly drier air mass with dew points falling into the 60s will be poised to enter the area for Saturday. Due to the decrease in instability, chances for shower and thunderstorm development will be lower, despite the movement of yet another potentially (very) weak short wave across the area on Saturday. .LONG TERM...(Sunday through Wednesday) Issued at 330 AM CDT Thu Aug 9 2018 As a ridge amplifies into the Northern Plains and upper Midwest on Sunday, it will pinch the trough located across the eastern half of the CONUS causing a closed low to develop. This closed low will meander over the OH Valley through Tuesday. At the sfc, a diffuse frontal boundary will still be lingering in the area on Sunday. Combined with daytime heating, scattered showers and thunderstorms are once again expected. The boundary will move southward on Monday, however weak disturbances rounding the trough will keep scattered convection in the forecast. A trough moving through southern Canada will push the lingering closed low northeastward heading into Tuesday. Drier air will filter in behind it and give way to some weak ridging. This will allow the chance of precip to taper off Monday night and leave diurnal convection for Tuesday and Wednesday. The height rises will bring daytime temps back to seasonal values, around 90 degrees, for Tuesday and Wednesday. Overnight lows will stay around 70 degrees, only warming a tad by mid-week. The ridge doesn't last long due to a shortwave moving out of the Southern Plains by Thursday. Did not venture far from guidance with the differences in how models handle the Canadian trough early in the week which then affects how the shortwave mid- week is handled, thus kept with low POPs at this time. && .AVIATION...(For the 18Z TAFS through 18Z Friday afternoon) Issued at 1155 AM CDT Thu Aug 9 2018 Area of showers and a few thunderstorms will move east of the KMSL and KHSV areas by 18-19Z. Isolated thunderstorms could redevelop by late this afternoon, but the probability is too low to include at this time. VFR ceilings are expected through this evening and overnight, with additional chances of showers and thunderstorms, especially late tonight. However, given the uncertainty, will only go with VCSH or VCTS for late this evening into the overnight hours starting at 03Z for KMSL and 06Z for KHSV. Ceilings may drop below 030agl (MVFR) by 12-15Z, although there could be areas of 015-025agl in some areas at times across north AL and southern middle TN. && .HUN WATCHES/WARNINGS/ADVISORIES... AL...NONE. TN...NONE. && NEAR TERM...17 SHORT TERM...KDW LONG TERM...JMS AVIATION...17 For more information please visit our website at weather.gov/huntsville.
Hazardous Weather Outlook National Weather Service Huntsville AL 526 AM CDT Thu Aug 9 2018 ALZ001>010-016-TNZ076-096-097-101100- Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan- Marshall-Jackson-DeKalb-Cullman-Moore-Lincoln-Franklin TN- 526 AM CDT Thu Aug 9 2018 This Hazardous Weather Outlook is for north Alabama and portions of southern middle Tennessee. .DAY ONE...Today and Tonight... Scattered to numerous thunderstorms are expected to develop and affect the area again today. Similar to recent days, some thunderstorms will be capable of producing strong gusty winds and locally heavy rainfall. Shower and thunderstorm activity is expected to wane in the early evening, but redevelopment may occur late tonight, especially in northwestern Alabama. .DAYS TWO THROUGH SEVEN...Friday through Wednesday... Scattered to numerous thunderstorms are expected again on Friday, with the best chances mainly in the eastern half of the area. Storms may be capable of producing strong wind gusts and locally heavy rainfall. Showers and thunderstorms will continue to be possible from Saturday through Wednesday. The coverage of activity is expected to be generally lower, especially on Saturday, but may increase again on Sunday as a front moves into the area. .SPOTTER CALL TO ACTION STATEMENT... Activation of storm spotters and emergency management personnel is not anticipated at this time.
Special Weather Statement National Weather Service Huntsville AL 606 AM CDT Thu Aug 9 2018 ALZ009-010-091400- Jackson-DeKalb- Including the cities of Scottsboro, Fort Payne, and Rainsville 606 AM CDT Thu Aug 9 2018 ...Areas of fog in the valleys of northeastern Alabama... Fog continues in the valleys of northeastern Alabama this morning, mainly affecting Jackson and DeKalb Counties. This includes the cities of Fort Payne and areas from near Woodville and Scottsboro northeastward through Bridgeport. The fog will be dense in a few locations and will affect travel along Interstate 59 in DeKalb County, and U.S. Highway 72 in Jackson County. Additional State Routes such as 65, 79 and 56 in the valleys of Jackson County will likewise be affected by the fog. Visibilities may fall below one mile and even down to one quarter mile in some instances. Motorists may encounter rapidly changing visibility conditions and are urged to drive with caution in these areas this morning. The fog is expected to dissipate by 9 AM. KDW
The Northeast Alabama radar (KHTX), 69 km away, was scanning. The volume nearest the first event began at 17:00 UTC.
1 thunderstorm wind. Local standard time, as filed.
A tree was knocked down along the intersection of Warrenton Road and Point of Pines Road in Guntersville.
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, August 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: 764191.