BATON ROUGE, La. — Francine became a hurricane Tuesday evening as it barreled toward south Louisiana, strengthening over extremely warm Gulf waters as those in possible harm's way rushed to complete storm preparations, filling sandbags, buying gas and stocking up on necessities for an expected landfall in the coming day.
Residents, especially in south Louisiana, have a 24-hour window to ''batten down all the hatches,'' Louisiana Gov. Jeff Landry warned at midday while Francine was still a tropical storm.
The freshly minted Category 1 hurricane packed top sustained winds of 75 mph (120 kph) and forecasters warned it was expected to crash ashore Wednesday afternoon or evening in Louisiana with a potentially life-threatening storm surge and damaging winds — perhaps even as a Category 2 storm with winds of 96 to 110 mph (155 to 175 kph).
Ahead of the storm's approach, lifelong New Orleans resident Roxanne Riley, 42, gathered water, snacks and other food from a Walmart and said she planned to stay at a family member's house on high ground to avoid flooding. But she was ready to evacuate if things got worse.
''It's very frustrating every time a storm comes in,'' Riley said. ''I'll just make sure my car is ready to roll in case I need to go by tomorrow. I'm going to keep on checking to see what it's looking like.''
By 8 p.m. EDT Tuesday, Francine was centered about 350 miles (560 kilometers) southwest of Morgan City, Louisiana, and was moving northeast at 10 mph (17 kph), the Miami-based National Hurricane Center said in an advisory.
A hurricane warning was in effect along the Louisiana coast from Cameron eastward to Grand Isle, about 50 miles (80 kilometers) south of New Orleans, according to the center. A storm surge warning stretched from the Mississippi-Alabama border to the Alabama-Florida border. Such a warning means there's a chance of life-threatening flooding.
Once Francine makes landfall, Landry said, residents should stay in place rather than venturing out onto the roads and risk blocking first responders or utility crews working to repair power lines.