Florida Bracing For Hurricane Idalia, Evacuations Ongoing Ahead Of Destructive Storm Surge

Satellite photo of Hurricane Idalia this morning shows
it beginning to take on "that look" of a potentially
very powerful storm.

Thousands of people are fleeing western and northern Florida today, and for good reason. 

What was Tropical Storm Idalia has strengthened into a hurricane, with top winds of 80 mph as of 7 a.m. this morning. Now, the meteorological ingredients have come together that could further strengthen this thing into a monster. 

Thunderstorms have consolidated around the center of Idalia. There's a lot of lightning in those storms. Upper level winds above the hurricane have relaxed. The water beneath the storm is at near record warmth. The combination sets the stage for rapid intensification today from a middling hurricane to a powerful, dangerous one. 

Forecasters expect Idalia to become a major Category 3 storm with top winds of 120 mph by the time it hits land tomorrow. It could even get stronger than that.   That's unquestionably bad, of course, but the worst part of any big hurricane is the storm surge. 

The low air pressure of a hurricane lifts the water, and the intense winds shove the water onshore like a massive bulldozer, taking down anything in its path. Huge waves with the surge just make everything that much worse. 

The National Hurricane Center warnings concerning the storm surge are worrying to say the least: They warn of "widespread deep inundation, with storm surge flooding greatly accentuated by powerful battering waves. Structural damage to buildings, with many washing away. Damage greatly compounded from considerable floating debris. Locations may be uninhabitable for an extended period."

I found it a bit disconcerting that already there was minor coastal flooding in communities like St. Petersburg, Florida on Monday, well in advance of the storm. The storm center was a full 175 miles west of Key West this morning and there was quite a bit of coastal flooding going on there. 

Officials are urging people to high tail it out of danger zones now if not sooner, before escape routes are cut off by rising water. 

All this while the sun is still shining on the Hurricane Idalia danger zone.  But the sun won't shine for long. Outer rain bands and squalls from Idalia should start moving over the area by this afternoon and evening. 

The area under a storm surge warning is huge, running from south of Sarasota in southwestern Florida, all the way northward along the rest of the west coast of Florida and on into the state's panhandle to a little east of Panama City. Evacuation orders are in effect for 21 Florida counties. 

The center of the hurricane, and its worst destruction is still expected to hit land where the coast of Florida starts curving westward into the panhandle. But there's still questions about whether it will shift east or west, so Idalia could strike closer to Tampa or closer to Panama City. 

It's always important to note that even if Hurricane Idalia tracks exactly where forecasts now think it will go. The storm surge will hit a broad area of coastal Florida. As I mentioned yesterday, the geography of the coast line and the path of Idalia will ensure that a storm surge is shoved into Tampa Bay, and the water will have nowhere to go with all that pressure from the southerly gales as Idalia blows past.

In the hardest hit zones, the storm surge could go up to 12 feet. Tampa Bay is expecting a four to seven foot storm surge. 

Torrential rains will also add to the mix, causing inland flooding. Water trying to drain from the land into Tampa Bay will have nowhere to go because of the storm surge blocking the way. 

President Biden has already approved an emergency declaration for Florida. Everyone is battening down. Tampa International Airport closed at midnight last night, and won't reopen until after the storm and damage is assessed. 

The hurricane warning affects 13 million people. Forty-six of Florida's 67 counties are in a state of emergency.  Schools are unsurprisingly closed throughout the western  half of Florida.  You can tell people there are expecting a biggie.   

Meanwhile, Hurricane Franklin swirls off the southeast
U.S coast, and west of Bermuda.

After striking Florida, Idalia will cruise through Georgia and South Carolina as a tropical storm, then head out to sea off the southeastern North Carolina coast by Thursday. From there, its future is uncertain.

HURRICANE FRANKLIN

We have to mention Hurricane Franklin, which as of this morning was very roughly half way between Bermuda and the southeastern coast of the United States.

 It's a monster that I think peaked yesterday, thankfully without hitting land.  Its top winds reached to nearly 150 mph and in satellite imagery took on the look of a classic powerful hurricane.

Its center will miss land and Franklin will eventually die in the cold waters of the North Atlantic. But being such  powerful storm, it's causing and will cause dangerous rip currents from Miami, Florida all the way north along the U.S. and Canadian east coasts to Newfoundland.