Welcome to DU! The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards. Join the community: Create a free account Support DU (and get rid of ads!): Become a Star Member Latest Breaking News General Discussion The DU Lounge All Forums Issue Forums Culture Forums Alliance Forums Region Forums Support Forums Help & Search

malaise

(269,144 posts)
Wed Apr 25, 2018, 09:12 PM Apr 2018

Sandy was the largest Atlantic hurricane on record

I remember us discussing its size back in 2012

https://www.wunderground.com/cat6/will-global-warming-create-larger-hurricanes
<snip>
As the planet warms, the extra heat and moisture available to hurricanes are expected to make them more destructive. Computer modeling work consistently indicates that greenhouse warming will increase the average intensity of global tropical cyclones by 2 - 11% by 2100, with an increase in the number of Category 4 and 5 storms (though the majority of the models predict that the number of weaker tropical cyclones will decrease). Global warming is also expected to make tropical cyclones rainier, with up to 20% more precipitation falling within 100 km of the storm center. But how might the areal size of these great storms change in our warming climate? Storm size is a crucial factor in determining how large a hurricane’s storm surge will be and how much damage it will cause. With hurricane storm surges progressively riding inland on top of ever-increasing sea levels, any increase in storm size could greatly increase storm surge damage. We are just beginning to study how storm size may change with global warming, but preliminary model results I heard last week at the American Meteorological Society’s 33rd Conference on Hurricanes and Tropical Meteorology showed that we may well have to reckon with an increase in storm size causing additional destruction by Atlantic hurricanes as the climate warms. The uncertainties are high, though, and there is no evidence that storms have been getting bigger since 1981.
The case of Hurricane Sandy

Despite being only a Category 1 hurricane just before making landfall in the U.S. in October 2012, Hurricane Sandy caused a catastrophic $55 billion in damage (other damage estimates are as high as $72 billion). At peak size, twenty hours before landfall, Sandy had tropical storm-force winds that covered an area nearly one-fifth the area of the contiguous United States. Since detailed records of hurricane size began in 1988, only one tropical storm (Olga of 2001) has had a larger area of tropical storm-force winds, and no hurricanes has. Sandy's area of ocean with twelve-foot high seas peaked at 1.4 million square miles--nearly one-half the area of the contiguous United States, or 1% of Earth's total ocean area. Most incredibly, ten hours before landfall (9:30 am EDT October 30), the total energy of Sandy's winds of tropical storm-force and higher peaked at 329 terajoules--the highest value for any Atlantic hurricane since at least 1969. This is 2.7 times higher than Katrina's peak energy, and is equivalent to five Hiroshima-sized atomic bombs. At landfall, Sandy's tropical storm-force winds spanned 943 miles of the U.S. coast. No hurricane on record has been wider; the previous record holder was Hurricane Igor of 2010, which was 863 miles in diameter. Sandy's huge size prompted high wind warnings to be posted from Chicago to Eastern Maine, and from Michigan's Upper Peninsula to Florida's Lake Okeechobee--an area home to 120 million people. Sandy's winds simultaneously caused damage to buildings on the shores of Lake Michigan at Indiana Dunes National Lakeshore, and toppled power lines in Nova Scotia, Canada--locations 1200 miles apart!

A 2014 study by Alice Zhai and Jonathan Jiang, Dependence of US hurricane economic losses on wind speed and storm size, found that Sandy’s size was about three times greater than the average hurricane. Had the Sandy been an average-sized hurricane, they estimated that damage from the storm would have been about 20 times less (with an uncertainty range of $1 billion - $5 billion in damage, instead of the actual $55 billion that occurred). In general, for a given maximum hurricane wind speed, the storm surge can vary by 30% depending upon how large the hurricane is (see Irish et al., 2008, The Influence of Storm Size on Hurricane Surge.)

https://www.weather.gov/okx/HurricaneSandy

3 replies = new reply since forum marked as read
Highlight: NoneDon't highlight anything 5 newestHighlight 5 most recent replies
Sandy was the largest Atlantic hurricane on record (Original Post) malaise Apr 2018 OP
1,000 miles wide...mega storm. BigmanPigman Apr 2018 #1
Formed South of Jamaica malaise Apr 2018 #2
It destroyed the subway in Manhatten BigmanPigman Apr 2018 #3

BigmanPigman

(51,623 posts)
1. 1,000 miles wide...mega storm.
Wed Apr 25, 2018, 09:16 PM
Apr 2018

This will be the new normal. Good thing we do not have climate change to worry about.

malaise

(269,144 posts)
2. Formed South of Jamaica
Wed Apr 25, 2018, 09:24 PM
Apr 2018

and we were the lucky ones - grew bigger and stronger over Cuba and the Bahamas and just kept growing. That was a massive storm

BigmanPigman

(51,623 posts)
3. It destroyed the subway in Manhatten
Wed Apr 25, 2018, 09:25 PM
Apr 2018

and the rat population forced a lot of businesses out of the area for years.

Latest Discussions»General Discussion»Sandy was the largest Atl...