A slow moving cold front draped across central Louisiana and Mississippi slowly but steadily moved southward through southeast Louisiana. A warm and unstable environment was in place ahead of this front.
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 LIX wrote it up.
A slow moving cold front draped across central Louisiana and Mississippi slowly but steadily moved southward through southeast Louisiana. A warm and unstable environment was in place ahead of this front. The combination of lift from the front and buoyancy already in place provided a setup supportive for a severe thunderstorm producing damaging winds near Baton Rouge.
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 New Orleans, LA wrote its last area forecast discussion before the first event at Sep 7, 2:47 PM CST, 1 hour 58 minutes earlier.
Area Forecast Discussion National Weather Service New Orleans LA 347 PM CDT Wed Sep 7 2022 ...New SHORT TERM, LONG TERM, AVIATION, MARINE... .SHORT TERM... (This evening through Thursday night) Issued at 318 PM CDT Wed Sep 7 2022 Tonight, some scattered showers and storms will be possible, especially in the northernmost areas (north of Baton Rouge). Southerly surface winds will help to advect moisture and warm air into the area, enhancing instability in the environment. Shear is fairly low, so the storms will not be progressing that quickly. PWs are in the 1.8-1.9 inches range, which is above the 75th percentile for the SPC sounding climatology. As a result, these storms could have efficient rainfall with higher rainfall rates. These storms do not appear in the models to be widespread, and they will have the potential to build some updraft strength thanks to the abundant moisture and instability. These storms will have the potential to produce a strong sub-severe winds gust or two inside of stronger storms. Locally heavy rainfall (briefly) will be possible inside of stronger storms, which could lead to some ponding on the roads, but widespread issues are not expected. Through the end of the week, an upper level low is expected to influence the area, enhancing rain chances for the region. There are still some uncertainties in the models regarding how much cloud cover will develop and how quickly the environment can destabilize, especially Thursday. PW values will still be higher and southerly surface winds will continue to enhance instability for the region. PoPs are forecast to be generally 60-70% Thursday and 80% Friday, which is close to the NBM. Due to some of the uncertainties surrounding cloud cover, the PoPs were not altered much from the NBM. Scattered showers will be possible tomorrow, looking at the model consensus. Locally heavy rainfall could be possible in isolated areas. Some models keep tomorrow a bit drier, though, so we will have to see how the environment looks in the morning. If there is less cloud cover, we will have more of a chance to see higher coverage. Friday, the upper level low pressure system is expected to linger in the area, and the general environmental conditions will not change much. PoPs are higher Friday in the forecast (~80%) to account for the more abundant moisture and higher instability in the environment. This is not set in stone of course and small changes in the environment and the development of the pattern over the next day or two could have a big difference in the rainfall potential. But in general scattered to numerous showers and storms will be possible Friday, especially during the afternoon hours. Locally heavy rainfall will be possible in isolated/vulnerable locations, but widespread flooding is not anticipated at this time. Gusty sub-severe (30-60mph) winds could be possible inside of stronger storms on Friday along with lightning. (MSW) && .LONG TERM... (Friday through Tuesday night) Issued at 318 PM CDT Wed Sep 7 2022 An upper level low pressure system is expected to linger over the area and drift northward slowly in the long term forecast. Generally looking at the models, this weekend into next week could be a bit drier for the area as a result of the lifting trough. PoPs between 40-60% are forecast and due to some uncertainties between models, NBM was kept in the forecast. But there are a few models that hint that PoPs could be lower than that, and it will depend on how the system develops over the next few days. Some scattered showers and storms will be possible still during the afternoon hours, but PW values will be lower (less than 1.7 inches) across the area and the environment will be a little more stable with drier air. There are still a lot of uncertainties in the long term forecast, but generally expect a drier pattern next week with the potential for isolated to scattered showers in the afternoon hours in some areas, but not widespread rainfall. A strong storm could have some gusty sub-severe winds, but again, there are too many uncertainties at this point to say for sure. (MSW) && .AVIATION... (18Z TAFS) Issued at 318 PM CDT Wed Sep 7 2022 VFR conditions prevail at all area airports and will persist through the forecast period. Some vicinity showers and TEMPO groups with MVFR conditions are forecast for some area airports this afternoon due to scattered showers and storms. IFR conditions will be forecast at MCB due to fog around daybreak briefly. Visibilities will return to VFR by noon at MCB. (MSW) && .MARINE... Issued at 318 PM CDT Wed Sep 7 2022 Winds will be northerly and moderate (<15 knots) tonight through Friday. Saturday and Sunday, winds will be southerly and moderate (<15 knots). Monday through Wednesday, winds will be northerly to westerly and moderate (<15 knots). Wave heights will correspond with the wind speeds. (MSW) && .PRELIMINARY POINT TEMPS/POPS... MCB 67 84 66 83 / 30 50 20 70 BTR 70 88 70 87 / 40 60 30 70 ASD 70 88 71 87 / 50 70 40 80 MSY 73 87 73 86 / 50 70 40 80 GPT 71 88 71 86 / 40 70 50 80 PQL 70 88 70 86 / 40 70 50 80 && .LIX WATCHES/WARNINGS/ADVISORIES... LA...None. GM...None. MS...None. GM...None. && SHORT TERM...MSW LONG TERM....MSW AVIATION...MSW
Special Weather Statement
National Weather Service New Orleans LA
306 PM CDT Wed Sep 7 2022
MSZ081-082-072100-
Jackson MS-Harrison MS-
306 PM CDT Wed Sep 7 2022
...A strong thunderstorm will impact portions of southeastern
Harrison and southwestern Jackson Counties through 400 PM CDT...
At 305 PM CDT, Doppler radar was tracking a strong thunderstorm
capable of producing a waterspout over Biloxi Bay over Biloxi,
moving west at 10 mph.
HAZARD...Waterspouts, winds in excess of 30 mph, and pea size hail.
SOURCE...Radar indicated.
IMPACT...Waterspouts can easily overturn boats and create locally
hazardous waters. Gusty winds could knock down tree limbs
and blow around unsecured objects. Minor damage to outdoor
objects is possible.
Locations impacted include...
Gulfport, Biloxi, St. Martin, D'iberville, Lyman, Latimer and
Gulfport Airport.
This includes the following Interstates...
Interstate 10 in Mississippi between mile markers 33 and 49.
Interstate 110 in Mississippi near mile marker 1, and between mile
markers 3 and 4.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3043 8885 3042 8887 3043 8893 3043 8899
3042 8901 3041 8899 3042 8891 3040 8886
3039 8886 3039 8900 3036 8912 3056 8911
3047 8884
TIME...MOT...LOC 2005Z 084DEG 7KT 3042 8898
WATERSPOUT...POSSIBLE
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...30 MPH
CABSpecial Weather Statement
National Weather Service New Orleans LA
437 PM CDT Wed Sep 7 2022
LAZ083-072215-
Northern Livingston LA-
437 PM CDT Wed Sep 7 2022
...A strong thunderstorm will impact portions of northeastern
Livingston Parish through 515 PM CDT...
At 437 PM CDT, Doppler radar was tracking a strong thunderstorm near
Livingston, or 13 miles northeast of Denham Springs, moving south at
20 mph.
HAZARD...Winds in excess of 40 mph and half inch 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...
Walker and Livingston.
This includes Interstate 12 between mile markers 16 and 32.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
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 3062 9089 3064 9069 3044 9056 3034 9084
TIME...MOT...LOC 2137Z 337DEG 18KT 3059 9077
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPHSpecial Weather Statement
National Weather Service New Orleans LA
447 PM CDT Wed Sep 7 2022
LAZ046-072230-
Iberville LA-
447 PM CDT Wed Sep 7 2022
...A strong thunderstorm will impact portions of northwestern
Iberville Parish through 530 PM CDT...
At 447 PM CDT, Doppler radar was tracking a strong thunderstorm near
Atchafalaya National Wildlife Refuge, or near Krotz Springs, moving
south at 30 mph.
HAZARD...Winds in excess of 40 mph and half inch 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...
Ramah.
This includes Interstate 10 in Louisiana between mile markers 128 and
135.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
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 3050 9159 3048 9158 3048 9156 3026 9139
3023 9148 3024 9157 3031 9162 3035 9163
3036 9164 3038 9163 3044 9164 3050 9170
TIME...MOT...LOC 2147Z 340DEG 24KT 3047 9167
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPHSpecial Weather Statement
National Weather Service New Orleans LA
525 PM CDT Wed Sep 7 2022
LAZ046-048-083-085-072300-
Iberville LA-Northern Livingston LA-Western Ascension LA-
East Baton Rouge LA-
525 PM CDT Wed Sep 7 2022
...A strong thunderstorm will impact portions of northwestern
Ascension, west central Livingston, eastern Iberville and south
central East Baton Rouge Parishes through 600 PM CDT...
At 525 PM CDT, Doppler radar was tracking a strong thunderstorm over
Shenandoah, or near Denham Springs, moving south at 10 mph.
HAZARD...Winds in excess of 30 mph and half inch 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...
Baton Rouge, Denham Springs, Oak Hills Place, St. Gabriel,
Prairieville, Westminster, Old Jefferson, Village St. George,
Inniswold, Shenandoah, Gardere and Merrydale.
This includes the following Interstates...
Interstate 10 in Louisiana between mile markers 159 and 171.
Interstate 12 between mile markers 1 and 13.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3033 9116 3033 9115 3034 9116 3049 9112
3049 9091 3029 9088 3029 9117
TIME...MOT...LOC 2225Z 359DEG 10KT 3042 9102
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...30 MPHThe national radar mosaic for the moment the first event began.
1 thunderstorm wind. Local standard time, as filed.
Multiple trees were downed by thunderstorm winds on Holly Hill Drive near Woodland Ridge Boulevard.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2022Every state in 2022This day in weather historyWarnings in Louisiana, 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: 1057950.