Tropical Storm Nate killed 20 people in Nicaragua, Costa Rica and Honduras on Thursday, officials said.
Hurricane and tropical storm warnings have been issued in three US states as the storm barrels northward.
Seven people are still missing after the storm hit Nicaragua, the country’s vice president said.
It is forecast to make landfall on Mexico’s Yucatan Peninsula on Friday with up to 8 inches (20 centimeters) of rain.
An advisory from the US National Hurricane Center said warnings had been issued for portions of the Louisiana, Mississippi and Alabama coastlines, with the storm expected to hit the region late Saturday or early Sunday as a Category 1 hurricane.
Nate’s forecast track had shifted slightly by late Thursday morning, putting New Orleans — andits compromised drainage system — directly in the storm’s sights.
Additionally, offshore oil and gas operators have evacuated personnel from six of the 737 manned oil and natural gas production platforms in the Gulf of Mexico, according to the Bureau of Safety and Environmental Enforcement.
Unlike drilling rigs, which usually move locations, production platforms stay in the same location during a project. One drilling rig was moved out of the storm’s predicted path as a precaution.
Some forecast models had predicted Nate would become a much stronger hurricane and make landfall on the Florida Panhandle, but those models now have fallen more in line with predictions of a landfall along the central Gulf Coast, CNN meteorologist Brandon Miller said.
Still, many factors will play a role in Nate’s development through the weekend, he said.
“How much Nate is able to strengthen once it hits those warm waters depends a lot on how intact the center of the storm can maintain as it traverses land,” Miller said. “If it gets ragged, it will take some time to reform over the ocean, and that will mean less time to gain in intensity.
“But if it manages to stay together while over Central America, it will be able to take advantage of those warm waters and quickly strengthen, maybe even undergo ‘rapid intensification,'” he said.
Rapid intensification occurs when a storm’s maximum sustained winds increase at least 35 mph in 24 hours or less. Hurricanes Harvey, Irma, Jose, and Maria all underwent the phenomenon on their way to becoming major hurricanes earlier this season.
New Orleans vulnerable to flooding
New Orleans Mayor Mitch Landrieu met Thursday morning with local, state and federal officials, including representatives of the US Army Corps of Engineers and Louisiana National Guard, to discuss preparations for the possibility of hurricane conditions, his spokeswoman said.
The briefing came as the city’s unique drainage system continued to experience critical deficiencies exposed during heavy August rainstorms that led to the flooding of several hundred properties.
One major pump that remained offline was located at the city’s largest-capacity pump station in the Lakeview neighborhood; it serves a heavily populated swath along the city’s western edge and a large section of neighboring Jefferson Parish. Another major pump in nearby City Park was out of service. The third was across the Mississippi River, in an area known as Algiers.
The other pumps that weren’t working were relatively small and included some that operate constantly to clear streets of runoff from daily usage, records show.
The water board also had backup generators at all 24 of its major pump stations, including 11 temporary generators, records show. Those generators were installed recently after one of five turbines that help power the city’s oldest, most powerful pumps failed, exposing a lack of backup power at many locations. Three turbines were available for service Thursday, a water board spokeswoman told CNN.
At a press conference Thursday evening, Gov. John Bel Edwards said he will position National Guard troops in New Orleans to help the city in monitoring pumps. He said that he’s been in regular contact with Landrieu to make sure the state is supporting the city.
“We’ve had a number of threats this hurricane season, and we’ve been blessed when Harvey went left and Irma went right,” Edwards said. “That is not what we anticipate out of Nate, so everyone should take this very seriously.”
Edwards authorized 1,300 National Guard troops to mobilize ahead of the storm, and he said he will ask President Donald Trump to declare a pre-landfall state of emergency for the state.
In a statement from his office on Thursday, Landrieu declared a state of emergency for New Orleans and urged residents to stay put throughout the weekend.
Outside the bull’s-eye, Florida still prepares
Though Nate’s forecast track only included a small patch of the western edge of the Florida Panhandle, Gov. Rick Scott activated the highest level of his state’s emergency response plan. He also encouraged residents to get prepared and stay alert in case the track changes and evacuations become necessary.
“Just think about your family: Get your three days of water, three days of food; if you’re taking medicine, make sure you have your medicine,” he said during a morning news conference.
“Take these things seriously,” he said. “In the middle of a storm, you cannot be evacuated. So, if there’s an evacuation notice, follow the evacuation notice. And make sure you take these things seriously.”
Scott declared a state of emergency for 29 counties in order to make sure local governments have sufficient time, resources and flexibility to prepare for Nate, according to a press release from his office.
“I have continued to be briefed by the Florida Division of Emergency Management on Tropical Storm Nate, and while current forecast models have the storm’s center west of Florida, we must be vigilant and get prepared,” he said.
A relentless hurricane season
Nate takes aim in the waning days of the peak period of a hurricane season that has ravaged the United States the Caribbean.
Though the season lasts from June 1 to November 30, storm activity hits its statistical peak on September 10, with the eight weeks surrounding that date considered a “season within a season,” according to the National Oceanic and Atmospheric Administration.
During this time, key environmental factors — including higher ocean temperatures and reduced wind shear — often align to fuel especially powerful storms.
Owing in part to those factors, hurricanes this year have left catastrophe in their wake: Harvey caused historic flooding in Houston; Irma devastated the Florida Keys; Katia triggered deadly mudslides in Mexico; and Maria left Puerto Rico and nearby islands in ruins.
Experts had warned that this season carried the “potential to be extremely active.” So far this year in the Atlantic, there have been six tropical storms and eight hurricanes.
CNN senior meteorologist Dave Hennen contributed to this report.
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