Hurricanes and Tornadoes That Hit Lockport, LA

The nearest NOAA station with 1991–2020 climate normals is Galliano, LA, 16 miles southeast of Lockport at 5 feet. August is the warmest, with an average high of 89°F and low of 76°F; January is the coolest, at 63°F and 45°F. July is the wettest at 9.2 inches of precipitation on average and November the driest at 3.5 inches; the year adds up to 66.8 inches over 81 days with at least a tenth of an inch. June to November, the hurricane season months, bring 57% of the year's precipitation (38.1 of 66.8 inches); the other six months are drier. September has brought the most of the 81 tropical systems that passed within 75 miles (32); a normal September there has highs of 86°F and 6.6 inches of precipitation. Highs reach 90°F on about 49 days a year, almost all from May to September. Lows fall below freezing on about 9 nights a year. That 66.8 inches is more than at 76 of the 81 Louisiana stations used on this site (94%). Raceland, 10 miles northwest, has its own station (Thibodaux 4 SE, LA): 71.3 inches a year, 4.5 more than here, and an August average high of 92°F against 89°F.

Water temperature at the NOAA tide station West Bank 1, Bayou Gauche, LA, 12 miles north, averaged 88°F in July and August and 56°F in January over 2021–2025. It averaged 80°F or warmer from May to September. Sea level at the New Canal tide gauge, 36 miles from Lockport, has risen 2.36 ± 0.19 inches per decade from 1982 to 2025, NOAA's linear trend; at that pace it is 23.6 inches in a hundred years. That is faster than at 131 of the 144 U.S. gauges with a NOAA trend.

Since 1996, the National Weather Service has logged 48 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Lockport: 33 thunderstorm wind reports, 8 flash floods, 4 heavy rain events and 3 lightning strikes. They killed 2 people and injured 2, and the NWS estimated $733,000 in property and crop damage. The strongest thunderstorm gust on record here was 69 mph, on March 7, 2005. August has had the most flash floods, 2 of 8. Of the 239 Louisiana cities on this site with a flash flood on record, 47 have had fewer than Lockport.

Flood insurance policyholders in Lockport's ZIP code 70374 have filed 475 claims with the National Flood Insurance Program since 1979, and were paid $4.6 million for buildings and contents, in the dollars of each year. The most came from Hurricane Juan in 1985: 56 claims (12% of all) and $825,000, then Hurricane Ida in 2021 with 48 and Tropical Storm Allison in 2001 with 48. 68% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 219 Louisiana cities on this site with 10 or more claims, 143 have fewer than Lockport.