One person died as flooding linked to the remnants of Tropical Storm Arthur prompted water rescues, evacuations, and road closures across parts of Mississippi and Louisiana on June 18, 2026. A dam in the Swan Lake in northern Harrison County was damaged in Mississippi while up to 610 mm (24 inches) of rain fell in parts of Louisiana.
Tropical Storm Arthur formed about 100 km (60 miles) east-northeast of Port O’Connor, Texas on June 17, 2026 and is forecast to move northeastward along the Gulf Coast before tracking inland over southwestern Louisiana.
Heavy rainfall, flash flooding, storm surge, and isolated tornadoes are expected across portions of the Gulf Coast as Potential Tropical Cyclone One tracks along the Texas coast on June 17, 2026. While the system is unlikely to develop into a tropical cyclone, it could bring rainfall totals of up to 500 mm (20 inches) to some areas along with the severe weather.
Heavy rainfall is forecast from South Texas into the lower Mississippi Valley this week. Moderate Risk excessive rainfall outlooks remain in effect across parts of the Gulf Coast as multiple rounds of thunderstorms develop within an unusually moist tropical air mass. Rainfall totals could reach 100 to 150 mm (4 to 6 inches) in some areas, with locally higher amounts possible from June 15 to 17, 2026.
An Enhanced Risk (Level 3/5) of severe thunderstorms has been issued for parts of the Lower Mississippi Valley on May 6, 2026, as forecasters warned that storms capable of producing damaging winds, large hail, and tornadoes are expected to develop from the Southern Plains into the Southeast. Heavy rainfall rates of 25 to 50 mm (1 to 2 inches) per hour may also accompany stronger storms across the region.
Severe thunderstorms and heavy rainfall are forecast across parts of northern Texas into the lower Mississippi and Tennessee Valleys on April 28, 2026, with an Enhanced Risk issued for parts of the region. Very large hail, damaging winds, and a few tornadoes are to be expected, while repeated storm activity may increase the risk of flash flooding.
Red Flag Warnings are in effect across the Central Plains and Southeast United States on March 28, 2026, as the National Weather Service (NWS) warns of critical fire weather conditions driven by strong winds, low relative humidity, and dry fuels. Wind gusts up to 80 km/h (50 mph) and humidity levels as low as 10–20% are expected to promote rapid fire ignition and spread. Outdoor burning is strongly discouraged across all warned regions.
Freeze Warnings and Watches have been issued for parts of eight southern U.S. states as sub-freezing temperatures are forecast from March 16 into March 17, 2026. Temperatures could fall as low as −12°C (10°F) in the coldest parts of Arkansas, while many other areas are expected to bottom out in the −7°C to −2°C (19 to 28°F) range. Frost, freeze conditions, and gusty post-frontal winds may damage sensitive vegetation and, in the coldest areas, affect exposed outdoor plumbing.
An M4.9 earthquake struck near Edgefield in northwestern Louisiana, United States, at 11:30 UTC on March 5, 2026, becoming the strongest inland earthquake recorded in the state. The United States Geological Survey (USGS) reported the event at a depth of 11.1 km (6.9 miles), while the European-Mediterranean Seismological Centre (EMSC) estimated a depth of 10 km (6.1 miles). The quake was widely felt across northern Louisiana and parts of neighboring Texas.
A bright fireball streaked across the skies of the southern U.S. around 01:19 UTC on March 3, 2026, disintegrating above the Georgia Pacific Wildlife Management Area.
