Hurricane Michael “is a worst case scenario for the Florida Panhandle”

Overnight, Hurricane Michael went from a moderately strong storm into a much more powerful, dangerous, and scary one. It’s now a Category 4 storm with 150 mph winds.

“This is a worst case scenario for the Florida Panhandle” the National Weather Service exclaimed Wednesday, as the storm neared landfall.

One hundred fifty mph winds are strong enough to ruin homes beyond repair. And the wind’s not all. Hurricane Michael is expected to make landfall today near Panama City, Florida, on the Gulf Coast, bringing with it a storm surge (coastal flooding) of 9 to 14 feet in some areas. That amount of water can sweep away homes and cars, and create a very dangerous situation.

“Hurricane Michael is a catastrophic and unprecedented event,” the Tallahassee office of the National Weather Service warns. No Category 4 storm on record has ever hit the Florida Panhandle, which includes Tallahassee, Florida’s capital city, with a population of 382,000. And as of yesterday, the storm was not forecast to be this strong (hurricane intensity is notoriously much harder to forecast than a hurricane’s track). Today, the Tallahassee issued its very first “extreme wind warning” for gusts in excess of 130mph.

Zachary Crockett/Vox

Meanwhile, winds are beginning to pick up along the coast. “It’s now just about too scary to get out on the road,” Panama City Mayor Greg Brudnicki told CNN Wednesday morning. And things are going to get worse. “Additional strengthening is expected before landfall,” the National Hurricane Center reports in a forecast.

The storm’s impacts won’t just be limited to the Florida Panhandle. Michael is expected to keep moving inland, bringing drenching rains and possibly flash flooding to Georgia and the Carolinas (which are still recovering from Hurricane Florence). Also the threat of storm surge will extend south of the panhandle on Florida’s Gulf Coast.

How did Michael go from Category 3 to 4 overnight?

Michael was just a tropical storm two days ago, with winds of 90 mph. It’s now a Category 4 storm with 150 mph winds. What happened?

There are a lot of reasons a hurricane may intensify quickly, but one of the main ones is water temperature. And as NASA’s Earth Observatory shows in the map below, Michael is moving through some of the Gulf of Mexico’s hottest waters. Overall, the Gulf is hotter than average this October.

NASA Earth Observatory

On Monday, the National Hurricane Center reported that Michael’s intensification “defies traditional logic,” because it continued to grow stronger despite the presence of a westerly wind shear, which usually helps to downgrade a hurricane.

One bit of good news is that the storm is moving quickly. It won’t stall the way Hurricane Florence did over the Carolinas, leading to catastrophic flooding. It’ll quickly head to the North and East. But it’s sure to leave a lot of damage behind.

Here are the key messages the National Hurricane Center wants you to know about the storm

1. Life-threatening storm surge is likely along portions of the coasts of the Florida Panhandle, Big Bend, and Nature Coast, where a storm surge warning is in effect. The worst storm surge is expected between Tyndall Air Force Base and Keaton Beach, where 9 to 13 feet of inundation is possible.

2. Michael is likely to produce potentially catastrophic wind damage where the core of the hurricane moves onshore in the Florida Panhandle, and everyone in the hurricane warning area should prepare for life-threatening hurricane winds. Dangerous hurricane- force winds will also extend well inland across portions of the Florida Panhandle, southern Georgia, and southeast Alabama as Michael moves inland.

3. Heavy rainfall from Michael could produce life-threatening flash flooding from the Florida Panhandle and Big Bend region into portions of Georgia, the Carolinas, and southeast Virginia.

4. Tropical storm conditions will likely affect portions of the southeast U.S. coast from northeast Florida through North Carolina, and tropical storm watches and warnings are in effect for these areas.

And here’s the latest forecast track from the National Hurricane Center:

How to follow Hurricane Michael

  • The National Hurricane Center has a page updating every few hours with the latest watches and warnings for Florence. Check it out.
  • Follow the National Hurricane Center on Twitter; it will keep you up to date with all the latest forecasts, hazards, and warnings.
  • Follow the Capital Weather Gang’s Twitter account. These folks tend to live-tweet storm updates.
  • Here’s a Twitter list of weather experts and local Florida officials via meteorologist Matt Lanza. These experts will give you up-to-the-second forecasts and warnings.