Zware orkaan Florence op weg naar oostkust VS

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weatherchannel twitterde op maandag 10-09-2018 om 16:50:39 JUST IN: #Hurricane #Florence has rapidly intensified into a Category 3 major hurricane. https://t.co/lL5smMnPn0 reageer retweet

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BNONews twitterde op maandag 10-09-2018 om 20:27:51 BREAKING: South Carolina will order an evacuation of its entire coastline ahead of Hurricane Florence, lawmakers say - Post and Courier reageer retweet

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BreakingNews twitterde op maandag 10-09-2018 om 21:06:50 Gov. McMaster orders mandatory evacuations for South Carolina's entire 187-mile coastline, starting noon Tuesday, ahead of Category 4 Hurricane Florence. https://t.co/a8xUmDOr9I https://t.co/k0NNb8DTL1 reageer retweet

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philklotzbach twitterde op maandag 10-09-2018 om 21:05:40 #Hurricane #Florence has now generated more Accumulated Cyclone Energy than the first five named storms of the 2018 Atlantic #hurricane season combined. https://t.co/xv5YMauby2 reageer retweet

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Expect a Storm Surge of 15 - 20 Feet in a Landfalling Category 4 Storm in the Carolinas
Landfalling Category 4 hurricanes are rare in the mainland U.S., with just 24 such landfalls since 1851—an average of one every seven years. (Category 5 landfalls are rarer still, with just three on record). All but three of these 27 landfalls by Cat4s and Cat5s have occurred south of South Carolina’s latitude; thus, Florence will be in very select company if it manages to make landfall at Category 4 strength in North or South Carolina.

If Florence hits the coast of North or South Carolina as a Category 3 or stronger hurricane, we should expect to see record storm surge heights, with a 15 – 20’ surge very possible, according to two experts I communicated with today. Dr. Robert Young, Professor of Coastal Geology at Western Carolina University, says that “the track of Hurricane Florence, combined with its expected size and strength at landfall and the unique coastal geomorphology of the region, is likely to result in a record storm surge along portions of the warning area.” And according to storm surge expert Dr. Hal Needham, “we could definitely see a 20+ foot storm surge/storm tide in the Carolinas. Even if Florence weakens a bit in the time right before landfall, the surge heights correlate better with the pre-landfall winds than the winds at landfall.”

It’s a good thing that landfalls by such strong hurricanes are rare along the South Carolina and North Carolina coast, since this coastline is extremely vulnerable to high storm surges. Two of these three historical Carolina Category 4 hurricanes generated a storm tide of 18 - 20 feet: Hugo of 1989 and Hazel of 1954. The other storm--Gracie of 1959--did not (it hit at low tide, significantly reducing the coastal flooding). The storm tide is the combination of the storm surge and the normal lunar tide, measured in height above sea level. The National Hurricane Center uses the terminology “height above ground level” when discussing the storm tide, meaning the height the surge plus tide gets above the normal high tide mark.

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Op maandag 10 september 2018 21:10 schreef Felagund het volgende:

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Het is misschien wel onrealistisch dat Florence een paar dagen 'statisch' voor de kust blijft hangen.