Gulf Coast Braces for Bertha: This Storm is Different.
Tropical Storm Bertha has made landfall in southeastern Louisiana, bringing gusty winds and storm surge to the Gulf Coast. What makes this storm particularly unusual is its slow crawl and the rare convergence of tropical storm warnings with extreme heat advisories, exposing millions to a dangerous combination of hazards. This event marks the second named storm to hit the U.S. coast this season, following Arthur's destructive path, underscoring the increasing complexities of our changing climate. Communities are urged to stay informed as Bertha continues its unpredictable journey.
Tropical Storm Bertha officially made landfall in St. Bernard Parish, Louisiana, around 2 p.m. CDT on Wednesday, July 22. Moving slowly west-northwest at just 7 mph with maximum sustained winds of 45 mph, Bertha is expected to affect the region for an extended period, brushing the Louisiana coast through Thursday. Tropical Storm Warnings are active for areas like metropolitan New Orleans and Lake Pontchartrain, where residents should prepare for strong winds that could exceed 39 mph, as Bertha is expected to move slower than average.
What sets Bertha apart is its unique behavior. Strong winds high in the atmosphere have pushed much of the storm's heavy rain and thunderstorms out over the Gulf waters. This unusual shift means that while Bertha brings coastal hazards like rough surf and up to three feet of storm surge, it also allows the sun to break through inland. This has led to a dangerous situation: millions across the Deep South are simultaneously under extreme heat warnings, with heat index values potentially soaring above 110°F. As our colleague Michael Lowry highlighted on his Substack Wednesday morning, this rare dual threat highlights the complex and sometimes surprising ways our weather patterns are evolving. Read: The emerging danger of post-hurricane heat waves
Looking ahead, Bertha's heaviest rainfall, estimated at two to four inches, is expected to impact the central coast of Texas, from south of Galveston County through Corpus Christi, on Thursday afternoon and evening. Winds will eventually diminish in Louisiana as the system moves toward southeast Texas, where it's expected to quickly dissipate.
Bertha is the second named storm this season to make landfall in the U.S., a rare occurrence previously seen in 2015. This follows Tropical Storm Arthur, which brought record-breaking rainfall and caused over $1 billion in damage and four fatalities in Louisiana last month. Such events underscore the growing urgency of preparing for more intense and unpredictable weather. As our climate warms, we can anticipate more frequent and severe weather phenomena, making sustainable infrastructure and community resilience vital.