A late afternoon strong thunderstorm produced dime sized hail and split a tree which fell onto a house and knocked another down onto a car in Lauderdale County.
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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 late afternoon strong thunderstorm produced dime sized hail and split a tree which fell onto a house and knocked another down onto a car in Lauderdale 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 Aug 2, 1:49 PM CST, 1 hour 19 minutes earlier.
Area Forecast Discussion National Weather Service Huntsville AL 249 PM CDT Wed Aug 2 2017 .NEAR TERM...(Tonight) Issued at 249 PM CDT Wed Aug 2 2017 Isolated thunderstorms and showers should dissipate rapidly by 00Z, so have only kept a slight chance going through 03Z across the far northwest corner of AL. Satellite and model trends indicate that cloud coverage will be much lower tonight, so have opted to add patchy valley fog from 10-13Z. Forecast lows in the mid-upper 60s look good. With few clouds, urban areas should drop into the upper 60s unlike this morning. .SHORT TERM...(Thursday through Friday) Issued at 249 PM CDT Wed Aug 2 2017 Not a whole lot of change in the short range models since yesterday. General trof position at 500 mb will remain over the southeast U.S. through Friday night. Minor waves will continue to track from the southern Plains into the Gulf South. A small wave is still progged to move east through AL and far southern TN on Thursday. Will maintain a low chance of showers/thunderstorms, with best chances still in our southeast counties in closer proximity to the higher vorticity in the wave. Cloud cover and temperatures will vary depending on precip development, but will stay the course with upper 80s to around 90 once again (warmest west including HSV and MSL). With the shortwave departing east and loss of solar heating, convection should die off quickly by around sunset. As a vigorous shortwave digs into the central Great Lakes on Friday, the trailing trof axis will move through the OH and TN valleys Friday and Friday evening. The associated cold front will slowly drop south through Friday evening. The highest chances of precipitation will be during the day Friday ahead of the front coinciding with peak heating. CAPE values of 1500-2500 j/kg and 30kt of 6km bulk shear will be sufficient for strong thunderstorms. However, activity will struggle to remain organized with weakening QG forcing and convergence along the front Friday evening. .LONG TERM...(Friday night through Tuesday) Issued at 249 PM CDT Wed Aug 2 2017 The front that will bring showers and thunderstorms on Friday will be to our south on Saturday but will slowly push back northward by Sunday. The southerly winds behind the front will pull back in plentiful moisture of dewpoints ~70 degrees and PWATS ~2 inches. An upper-level trough develops in the North Plains on Sunday and a series of disturbances in the base will lift up into the TN Valley Sunday and Monday. This will result in scattered to numerous showers and thunderstorms across the area capable of producing locally heavy rainfall. As the system progresses towards the Great Lakes, it will send a weak cold front to the area Monday night/Tues keeping a chance of storms through the extended forecast period. && .AVIATION...(For the 18Z TAFS through 18Z Thursday afternoon) Issued at 1133 AM CDT Wed Aug 2 2017 VFR flight conditions are anticipated through most of the period. Scattered cumulus (~045agl) this afternoon will dissipate around sunset. Patchy 5sm BR is expected in the KMSL and KHSV vicinity from 10-13Z. Light southeast to south flow is anticipated today and again on Thursday. && .HUN WATCHES/WARNINGS/ADVISORIES... AL...NONE. TN...NONE. && NEAR TERM...17 SHORT TERM...17 LONG TERM...JMS AVIATION...17 For more information please visit our website at weather.gov/huntsville.
Hazardous Weather Outlook National Weather Service Huntsville AL 207 PM CDT Wed Aug 2 2017 ALZ001>010-016-TNZ076-096-097-031000- Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan- Marshall-Jackson-De Kalb-Cullman-Moore-Lincoln-Franklin TN- 207 PM CDT Wed Aug 2 2017 This Hazardous Weather Outlook is for north Alabama and portions of southern middle Tennessee. .DAY ONE...Tonight... Patchy fog is possible late tonight in sheltered and valley locations and near bodies of water. Visibilities may lower to one mile or less at times in some of the more dense fog. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday... Isolated to scattered thunderstorms are possible on Thursday as a cold front approaches from the northwest. Higher chances for thunderstorms exist Friday and Friday night as the front moves southward into the area. A few strong storms are possible Friday and Friday evening. Isolated to scattered storms are then possible Saturday and Saturday night as the front stalls in the vicinity of north central Alabama. Thunderstorm chances increase again Sunday through Tuesday, as the front lingers around the outlook 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 352 PM CDT WED AUG 2 2017 ALZ001-002-022115- Lauderdale AL-Colbert AL- 352 PM CDT WED AUG 2 2017 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL LAUDERDALE AND EAST CENTRAL COLBERT COUNTIES UNTIL 415 PM CDT... At 352 PM CDT, Doppler radar was tracking a strong thunderstorm over Sheffield, moving north at 10 mph. Pea size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Florence, Muscle Shoals, Sheffield, Tuscumbia, Killen, St. Florian, Underwood-Petersville, Northwest Alabama Regional Airport and Oakland. PRECAUTIONARY/PREPAREDNESS ACTIONS... Very heavy rainfall is also occurring with this storm and may lead to localized flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3469 8762 3474 8783 3492 8781 3489 8752 TIME...MOT...LOC 2052Z 188DEG 7KT 3479 8772 SL.77
Special Weather Statement
National Weather Service Huntsville AL
404 PM CDT WED AUG 2 2017
ALZ001-002-022130-
Lauderdale AL-Colbert AL-
404 PM CDT WED AUG 2 2017
...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL LAUDERDALE AND EAST
CENTRAL COLBERT COUNTIES UNTIL 430 PM CDT...
At 403 PM CDT, Doppler radar was tracking a strong thunderstorm over
Florence, moving northeast at 10 mph.
Nickel size hail...very heavy rainfall...and winds in excess of 40
mph will be possible with this storm.
Locations impacted include...
Florence, Muscle Shoals, Sheffield, Killen, St. Florian,
Underwood-Petersville, Northwest Alabama Regional Airport, Center
Star and Zip City.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Very heavy rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3500 8770 3500 8760 3490 8741 3472 8762
3482 8780
TIME...MOT...LOC 2103Z 214DEG 9KT 3483 8767
SL.77The Columbus AFB radar (KGWX), 119 km away, was scanning. The volume nearest the first event began at 21:07 UTC.
4 thunderstorm wind. Local standard time, as filed.
A tree was split by high winds and knocked down onto a house in Florence.
A tree was knocked down onto a home on Foy Avenue.
A tree was knocked down by thunderstorm winds.
A large tree branch was knocked down onto a car.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Alabama in 2017Every state in 2017This day in weather historyWarnings in Alabama, August 2017
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: 714319, 714320, 714321, 714322.