Afternoon thunderstorms produced isolated wind damage.
Every event with a place to put it. Tap one for its entry below.
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.
Afternoon thunderstorms produced isolated wind damage.
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 7, 1:21 PM CST, 1 hour 57 minutes earlier.
Area Forecast Discussion National Weather Service Huntsville AL 221 PM CDT Tue Aug 7 2018 .NEAR TERM...(Tonight) Issued at 221 PM CDT Tue Aug 7 2018 Another hot and humid day across the Tennessee Valley, with an upper-high just to the south of the region helping to promote these conditions. Southwest flow at the surface and aloft has helped to advect Gulf moisture into the region as seen by PWAT values currently around 1.7" to 1.9". This moisture, combined with ample heating (19z temperatures in the low to mid 90s), has helped initiate diurnally driven convection. CAPE values of 2000-3000 J/kg have provided more than ample fuel for these storms, despite the very weak shear and lack of forcing. As a result of this instability, a few storms may become locally strong -- and capable of a brief damaging wind gust (in addition to locally heavy rainfall). This activity will quickly wane by early to mid evening with the setting sun and the loss of heating. Cloud cover should mostly dissipate, resulting a quiet evening and a mostly clear start to the night. After midnight, however, clouds will gradually filter in from the northwest well ahead of a cold front roughly draped over northwest Tennessee. Models are wanting to show the potential for a few isolated showers and storms making their way into the area early Wednesday morning ahead of this feature. Based on current trends, am less inclined to believe that activity will make it into Northwest Alabama as early as 09-12z. However, given the very moist environment, have kept an isolated thunder mention in the forecast late tonight. Do think, however, that patchy fog may be an issue across the river valleys of Northeast Alabama once again and have added a mention of this in the grids late tonight as well. .SHORT TERM...(Wednesday through Friday) Issued at 221 PM CDT Tue Aug 7 2018 A change in the pattern will occur during the later half of the work week as a cold front will continue to push south and east toward the Tennessee Valley region of North Alabama. Models still differ with how far south the front will move Wednesday (and when it will make it in). The latest trend is that this feature may make it into region late Wednesday afternoon into Wednesday evening. Should this occur, it would make for a drier forecast in the morning (and perhaps allow for more destabilization). Have trended the grids more toward this thinking, which makes sense given its current position and the location of its associated line of storms. Thus, have isolated to widely scattered activity in the morning, before ramping up to scattered/numerous wording in the 18-21z timeframe of the afternoon. Should a little more destabilization occur, the threat for a few strong storms will exist -- mainly capable of a localized damaging wind threat. With PWATs hovering around 2", any of these storms could produce locally heavy rainfall/downpours. Models indicate the boundary will slowly push into (and possibly through the area) Wednesday night into Thursday. Given the location of the boundary, it's orientation, and the deep southwest/west flow along it, this period should be fairly wet. Have trended higher with PoPs as most locations should see some beneficial wetting rains, thanks to the numerous to perhaps widespread coverage of these showers and thunderstorms. The NAM is hinting at 40-50 kt LLJ feature that may develop over Central Mississippi and pass north and east over North and Central Alabama Thursday evening into Thursday night. This feature could serve to maintain this deeper convection well into a Thursday night into Friday time period. Should the front stall across or close to the area (with multiple waves of energy passing by), the threat for locally heavy rainfall, training of storms, and localized flooding concerns may be warranted. Also, the added clouds and rain chances will keep high temperatures below normal in the mid to upper 80s. .LONG TERM...(Friday night through Monday) Issued at 221 PM CDT Tue Aug 7 2018 Unsettled weather will continue late this week into the weekend as a broad upper-trough amplifies over the eastern CONUS. There is some uncertainty to the degree of coverage, however, and the location of the remnant (diffuse) boundary that would be the primary low-level forcing mechanism. By late Friday into Saturday, this feature should be south of the region in Central/South Alabama. However, with a broad upper-low over the Great Lakes and Ohio Valley still spinning through the weekend into Monday, I would still expect scattered convection each day in this very moist environment. As high pressure over the Gulf of Mexico gradually nudges north Sunday into Monday, it's possible a weak boundary could lift north into the Tennessee Valley -- providing a focus for more numerous convection either day. However, this is less certain and have maintained chance PoPs for now to handle this potential. Regardless, decent rain chances will exist, and combined with the cloud cover, result in a wetter and slightly "cooler" pattern through the weekend (highs in the mid to upper 80s). && .AVIATION...(For the 18Z TAFS through 18Z Wednesday afternoon) Issued at 1229 PM CDT Tue Aug 7 2018 VFR conditions will be the predominant flight category at each terminal through the period. Isolated to widely scattered storms are possible this afternoon and evening, but due to the limited coverage, did not have enough confidence to mention in the TAF. This activity will generally weaken and dissipate overnight. Clouds will increase ahead of a frontal system moving in from the northwest late tonight into Wednesday morning. Some -SHRA/TSRA may be possible late in the period, but chances are not high enough to mention at this time. && .HUN WATCHES/WARNINGS/ADVISORIES... AL...NONE. TN...NONE. && NEAR TERM...AMP.24 SHORT TERM...AMP.24 LONG TERM...AMP.24 AVIATION...AMP.24 For more information please visit our website at weather.gov/huntsville.
Hazardous Weather Outlook...UPDATED National Weather Service Huntsville AL 1228 PM CDT Tue Aug 7 2018 ALZ001>010-016-TNZ076-096-097-081200- Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan- Marshall-Jackson-DeKalb-Cullman-Moore-Lincoln-Franklin TN- 1228 PM CDT Tue Aug 7 2018 This Hazardous Weather Outlook is for north Alabama and portions of southern middle Tennessee. .DAY ONE...This Afternoon and Tonight... Isolated to scattered thunderstorms are expected to develop this afternoon. Some thunderstorms may be capable of producing strong wind gusts and locally heavy downpours. .DAYS TWO THROUGH SEVEN...Wednesday through Monday... A cold front will move into the region and stall initially, bringing scattered to numerous shower and thunderstorm activity for Wednesday through Friday. Some strong thunderstorms capable of producing gusty winds and locally heavy rainfall are possible each day. While thunderstorms will remain in the forecast, the coverage of activity may be a little lower from Saturday through Monday. Some thunderstorms capable of strong wind gusts could still occur during this period. .SPOTTER CALL TO ACTION STATEMENT... Activation of storm spotters and emergency management personnel is not anticipated at this time.
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1155 AM CDT TUE AUG 7 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0435 PM TSTM WND DMG 1 NW ATHENS 34.80N 86.97W
08/06/2018 LIMESTONE AL EMERGENCY MNGR
A TREE WAS REPORTED DOWN ON HOUSTON STREET.
0432 PM TSTM WND DMG 4 NNW ATHENS 34.84N 86.98W
08/06/2018 LIMESTONE AL EMERGENCY MNGR
A TREE WAS REPORTED DOWN ON AIRFIELD STREET.
0420 PM TSTM WND DMG 7 ENE ROGERSVILLE 34.85N 87.16W
08/06/2018 LIMESTONE AL EMERGENCY MNGR
A TREE WAS REPORTED DOWN ON BARKER ROAD.
0405 PM TSTM WND DMG 7 WSW VINA 34.34N 88.16W
08/06/2018 FRANKLIN AL EMERGENCY MNGR
EMA GOT REPORTS OF TREES DOWN ALONG CO ROAD
11 SOUTHWEST OF VINA.
0340 PM TSTM WND DMG 2 NNE DECATUR 34.60N 86.97W
08/06/2018 MORGAN AL BROADCAST MEDIA
LARGE TREE DOWN AT THE CORNER OF GRANT AND
CHURCH STREET.
0340 PM HAIL 2 NNE DECATUR 34.60N 86.97W
08/06/2018 E0.88 INCH MORGAN AL BROADCAST MEDIA
REPORT OF NICKEL SIZE HAIL.
0332 PM TSTM WND DMG 2 NNE DECATUR 34.60N 86.97W
08/06/2018 MORGAN AL EMERGENCY MNGR
CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 2
NNE DECATUR. A TREE WAS REPORTED DOWN ON A
HOUSE AT THIS LOCATION.
0332 PM TSTM WND DMG 2 NNW DECATUR 34.60N 87.00W
08/06/2018 MORGAN AL EMERGENCY MNGR
CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 2
NNW DECATUR. TREE REPORTED DOWN ON ROAD AT
THE INTERSECTION OF 7TH AVENUE W AND 1ST
STREET SW.
0332 PM TSTM WND DMG 3 N DECATUR 34.61N 86.98W
08/06/2018 MORGAN AL EMERGENCY MNGR
CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 3
N DECATUR. TREE REPORTED DOWN ON A HOUSE AT
THIS LOCATION ON VINE STREET.
0332 PM TSTM WND DMG 2 NNE DECATUR 34.60N 86.98W
08/06/2018 MORGAN AL EMERGENCY MNGR
CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 2
NNE DECATUR. TREE WAS REPORTED DOWN ON THE
ROAD AT THE INTERSECTION OF JACKSON STREET
SE AND 8TH AVENUE SE.
0203 PM TSTM WND GST 2 NNE SCOTTSBORO 34.67N 86.03W
08/06/2018 E40 MPH JACKSON AL EMERGENCY MNGR
OUTFLOW BOUNDARY KNOCKED DOWN A FEW LIMBS ON
A COUPLE OF OAK TREES IN SCOTTSBORO. TIME
ESTIMATED FROM RADAR.
&&Special Weather Statement National Weather Service Huntsville AL 140 PM CDT TUE AUG 7 2018 ALZ009-071915- Jackson AL- 140 PM CDT TUE AUG 7 2018 ...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL JACKSON COUNTY UNTIL 215 PM CDT... At 140 PM CDT, Doppler radar was tracking a strong thunderstorm near Stevenson, moving east at 10 mph. Pea size hail and wind gusts up to 50 mph will be possible with this storm. Locations impacted include... Bridgeport, Stevenson, Bass and Russell Cave National Monument. PRECAUTIONARY/PREPAREDNESS ACTIONS... Frequent cloud to ground lightning is occurring with this storm. Lightning can strike several miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && LAT...LON 3486 8600 3499 8599 3498 8569 3477 8585 TIME...MOT...LOC 1840Z 292DEG 8KT 3489 8593 KTW
Special Weather Statement
National Weather Service Huntsville AL
324 PM CDT TUE AUG 7 2018
ALZ006-072045-
Madison AL-
324 PM CDT TUE AUG 7 2018
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MADISON COUNTY UNTIL
345 PM CDT...
At 324 PM CDT, Doppler radar was tracking a strong thunderstorm over
Moores Mill, moving northeast at 10 mph.
Winds in excess of 40 mph will be possible with this storm.
Locations impacted include...
Moores Mill and New Market.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike several miles away from a thunderstorm. Seek a
safe shelter inside a building or vehicle.
&&
LAT...LON 3488 8635 3486 8635 3483 8651 3489 8654
3499 8647 3499 8645
TIME...MOT...LOC 2024Z 236DEG 9KT 3488 8650
KTWThe Northeast Alabama radar (KHTX), 102 km away, was scanning. The volume nearest the first event began at 21:18 UTC.
2 thunderstorm wind. Local standard time, as filed.
Large tree limbs were knocked down and some tin was peeled from a roof of a trailer.
Power lines were knocked down.
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: 764196, 764197.