Scattered mainly diurnal thunderstorms developed along a slow moving low level boundary on September 6th and 7th. A few of the storms focus for strong thunderstorms that produced isolated wind damage in Jefferson County and Sumter counties.
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 BMX wrote it up.
Scattered mainly diurnal thunderstorms developed along a slow moving low level boundary on September 6th and 7th. A few of the storms focus for strong thunderstorms that produced isolated wind damage in Jefferson County and Sumter counties.
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 6, 9:16 PM CST, 56 minutes earlier.
Area Forecast Discussion National Weather Service Birmingham AL 1016 PM CDT Tue Sep 6 2022 ...New SHORT TERM... .SHORT TERM... (Rest of Tonight) Issued at 1015 PM CDT TUE SEP 6 2022 We have some convection at this hour on the radar associated with the upper shortwave affecting C AL. Over the next few hours this activity should have a SSE trend swinging the base of the trough affecting mainly the NW and W counties. Lightning remains present but is trending downward. That trend should continue. Some patchy fog will be possible across generally the NW half of the area in the wake of the storms later in the night in the pre-dawn hours. Made only a few tweaks to temps/dew points based on latest trends/hires. 08 Previous short-term discussion: /Updated at 112 PM CDT Tue Sep 06 2022/ Through Tomorrow. The weather pattern across Central AL remains heavily influenced by the deep positively tilted trough extending southwest from the Ohio Valley into the ArkLaTex region. The trough will slowly drift eastward today and tomorrow as high pressure over the Southwest CONUS begins to strengthen and build east. Convection has initiated over Tennessee closer to the trough axis and associated PVA. This activity is being driven into Northwest AL by northwesterly low- level winds, and may propagate into our northwestern counties later this afternoon while preceding isolated showers and storms could develop as far south as the I-85 corridor. Coverage will wane this evening. Highs will range from the mid 80s northwest to lower 90s southeast. As the trough axis shifts east tonight, a closed upper low will surge south over the Lower MS Valley. This will better align the corridor of lift directly over Central AL which will support the development of scattered showers and storms tomorrow, especially during the afternoon. Coverage could be limited by diminishing moisture as low-level flow orientation favors a northwesterly heading, so continued to leave out Likely PoPs at this time. 86 && .LONG TERM... /Updated at 237 PM CDT Tue Sep 06 2022/ Minor changes to rain chances in the extended, generally to just the orientation of greatest chances in those periods. Guidance continues to show a dry slow rotating around the upper low and into Central Alabama in the Saturday-Saturday night timeframe. This will dictate rain coverage and orientation of any banding, which could lead to localized flooding. Rain amounts for Thursday through Saturday did increase slightly across the east this afternoon, but only by a few tenths of an inch. Given wet ground conditions and the potential for heavy rainfall, will continue to highlight Friday and Saturday in the HWO for localized flooding. 14 Previous long-term discussion: /Updated at 340 AM CDT Tue Sep 06 2022/ Thursday through Monday. /Unseasonal regional weather pattern goes on/ At the start of the period/Thursday, an upper low is forecast to be centered over the vicinity of the north-central Gulf Coast region. The position of the upper low has trended a tad southward on the GFS and ECMWF. Aided by a surface high over the Midwest, this setup favors a moisture gradient moving farther southeast/atop Central Alabama. While showers and storms will still occur, chances were lowered a touch from the previous forecast north of Interstate 85 with guidance favoring a majority of precipitation occurring near and south of Interstate 85. If this trend continues, rain chances could be lowered further for locations along and either side of Interstate 20. Higher PWAT values/increased moisture are progged to rapidly overspread Central Alabama overnight Thursday into Friday as a weak and broad surface low forms to our southwest. With the nearby upper low also gaining a bit of latitude, a high coverage of showers and some storms is expected on Friday. Tall instability profiles, with surface-based CAPE as high as 1,500 J/kg, and deep moisture will result in some potential for pockets of heavy rain. Saturday will, too, feature showers and storms across the region but in a different fashion compared to Friday. Models are showing the upper low drifting northward a bit more, which may allow a midlevel slot of drier air to advect into our area from the southwest, affecting the extent of rain coverage for Central Alabama. If this evolution were to happen, showers and storms would become most focused in a comma-shaped arch around Alabama with heavy/training rainfall, stretching from the Florida Panhandle northward across Georgia. This is reflected in ensemble data as well. A small shift in the upper low's position will heavily influence our weather in Central Alabama so this will be something to monitor. The upper low is expected to get scooped up by a trough moving across the northern CONUS on Sunday but, with a trailing axis of high moisture content, periods of showers and storms are expected to persist through the remainder of the forecast period/Sunday and Monday. There are signals that, perhaps, the pattern will change enough later next week such that we'll see a break from rainy weather. We'll see how that goes as we get closer. Given wet ground from recent rains and forecast widespread showers/storms on Friday and nearby heavy rain on Saturday (currently favoring locations just east of us), I'll maintain a flood risk in the hazardous weather outlook for those two days. 89^GSatterwhite && .AVIATION... (00Z TAFS) Issued at 703 PM CDT TUE SEP 6 2022 A broken line of showers and thunderstorms can be noted on radar at this hour across the NRN 1/3 of AL slowly sagging SWD but the cells are moving to the ESE. These are nearing BHM and may also affect TCL/EET/ASN/ANB as well over the next few hours. Coverage should decrease during the latter part of the evening. Some patchy fog will be possible during the pre-dawn hours toward morning as clouds decrease some from convection. More convection is possible for afternoon hours on Wed. 08 && .FIRE WEATHER... All fire weather elements will remain below critical thresholds over the coming days. Periods of showers and storms are forecast, especially during the afternoon and evening hours, with the best coverage across the west on Wednesday and southeast on Thursday. 20 foot winds are forecast to average from a northwesterly heading on Wednesday and northeasterly on Thursday, generally below 10 knots. && .PRELIMINARY POINT TEMPS/POPS... Gadsden 67 86 65 87 / 30 40 20 30 Anniston 70 87 66 86 / 30 40 20 30 Birmingham 70 86 67 86 / 30 40 20 30 Tuscaloosa 70 87 68 87 / 30 50 20 30 Calera 70 86 68 86 / 30 40 20 30 Auburn 72 87 69 85 / 20 30 20 50 Montgomery 73 90 70 88 / 20 30 20 50 Troy 72 89 69 87 / 20 20 20 60 && .BMX WATCHES/WARNINGS/ADVISORIES... None. && SHORT TERM...08/86 LONG TERM....14/89 AVIATION...08
Hazardous Weather Outlook National Weather Service Birmingham AL 342 PM CDT Tue Sep 6 2022 ALZ011>015-017>050-072345- 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- 342 PM CDT Tue Sep 6 2022 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...Wednesday through Monday. Heavy rainfall may occur on Friday and Saturday and result in localized flooding. .SPOTTER INFORMATION STATEMENT... Activation of storm spotters and emergency management may be needed on Friday and Saturday. 08
Special Weather Statement
National Weather Service Birmingham AL
613 PM CDT Tue Sep 6 2022
ALZ015-024-070000-
Walker AL-Jefferson AL-
613 PM CDT Tue Sep 6 2022
...A strong thunderstorm will impact portions of east central Walker
and central Jefferson Counties through 700 PM CDT...
At 613 PM CDT, Doppler radar was tracking a strong thunderstorm over
West Jefferson, or near Dora, moving southeast at 10 mph.
HAZARD...Winds in excess of 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Sumiton, Dora, Adamsville, Graysville, Sylvan Springs, Brookside,
Maytown, West Jefferson, Cardiff, Quinton, Burnwell and Miller Steam
Plant.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3365 8691 3351 8705 3363 8714 3367 8718
3371 8709 3374 8705 3370 8704
TIME...MOT...LOC 2313Z 313DEG 8KT 3364 8707
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
87/GranthamPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
713 PM CDT TUE SEP 6 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0613 PM TSTM WND DMG WEST JEFFERSON 33.65N 87.06W
09/06/2022 JEFFERSON AL FIRE DEPT/RESCUE
TREES DOWN ON FLAT TOP RD AND HONEYSUCKLE RD
IN WEST JEFFERSON.
&&
GRANTHAMThe Birmingham radar (KBMX), 60 km away, was scanning. The volume nearest the first event began at 04:13 UTC.
2 thunderstorm wind. Local standard time, as filed.
Several trees uprooted along Flat Top Road and Honeysuckle Road.
Around two dozen trees uprooted in the city of York. Some of the trees fell on homes and power lines.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Alabama in 2022Every state in 2022This day in weather historyWarnings in Alabama, September 2022
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: 1056819, 1056817.