"SUPER STORM" for the northeast?

jigngrub

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Re: "SUPER STORM" for the northeast?

Most of us do not understand the Nature of Millibars and Barometric Pressure.. Or the affects or how that equates to rise of water within a Storm.

Think of it as Vacuum ( Very large one ) sucking up water level that is not normal to natural sea level out at sea. Then pull that Vacuum into a land mass. Well the land is at 0 or less feet at natural sea level. Now you pick up some Mass of water ( like an Inverted balloon ) with a low pressure system ( Like Sandy ) .. then throw it at a land mass which is at 0" or lower ( like New Orleans ) .. what do you have .. Flooding.

If the Storm has Vacuum .. then your gonna get hit with a "surge" .. that means its gonna carry water up to whatever that Vacuum creates. .. then on top of that you have the Waves/Wakes .. level water at this time (+15 plus high waves ) will create Very bad conditions.

Surge=your new water level .. 15' wakes on top of that is what is gonna do that damage .. In and out.. In and out .. so-on.

I guess Im getting a little too much.. but ..

Please Still stay Safe...

YD.

This:
The wind causes the water to pile up higher than the ordinary sea level. Low pressure at the center of a weather system also has a small secondary effect, as can the bathymetry of the body of water.

Is from here:
Storm surge - Wikipedia, the free encyclopedia
 

Don S

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Re: "SUPER STORM" for the northeast?

Really low millibars, suck. Seriously, they move air from a high pressure area. You don't have a 940 millibar low without wind, which also is part of the storm surge.
 

bruceb58

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Re: "SUPER STORM" for the northeast?

Storm Surge Overview

I guess we should trust NOAA
The impact on surge of the low pressure associated with intense storms is minimal in comparison to the water being forced toward the shore by the wind.
 

RogersJetboat454

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Re: "SUPER STORM" for the northeast?

If anybody hasn't visited The Weather Channel's website, some sobering pictures especially from the NY/NJ area;
Photos: Superstorm Slams East - weather.com

We got off pretty easy in my location in MA. Wind was really no more then what we would encounter in a traditional new england blizzard/Nor'easter. Lost power for an hour in the morning. Not any real flooding, or much in the way of tree damage.

Have a friend down on Staten Island who's place was right near the ocean, but smartly elected to hang with her folks in Brooklyn. Her last FB post was that her block is totaled. I can believe it seeing some of the photo's on TWC. Hope Angus is doing alright...
 

nwcove

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Re: "SUPER STORM" for the northeast?

watching CNN now.....its shocking to to see the devastation and hear the personal stories of those that decided to ride it out.
 

Thalasso

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Re: "SUPER STORM" for the northeast?

Yes...that is what I thought.

Normal pressure is around 485 millibars. 45 millibars more than this storm. That is only 18 inches of water

actually the average sea-level pressure is 1013.25, but it is usually rounded to 1013

Sandy was 951 millibars
 

CheapboatKev

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Re: "SUPER STORM" for the northeast?

Having rode out a few, up to a cat 4..
Best wishes to all, and it's strange watching a storm like this and have it not affect me.
 

ricohman

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Re: "SUPER STORM" for the northeast?

Just saw a news cast of what I think is New Jersey. It showed a large pile of boats piled up on each other. And the houses next to those boats were in shambles. Huge disaster. I cant imagine how those people must feel.
 

bruceb58

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Re: "SUPER STORM" for the northeast?

actually the average sea-level pressure is 1013.25, but it is usually rounded to 1013

Sandy was 951 millibars
Not sure where I got 485 and 450 from! :facepalm:

1013-951 = 62 which is equivalent to 24" water
 

angus63

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Re: "SUPER STORM" for the northeast?

Thanks to all who mentioned concern. Family is fine. Dog is no smarter but more experienced. My home is damaged but repairable. I spent the day helping brother in law and friends not so fortunate. I helped them take what was salvagable to a storage facility. My wife's best friend lost her home and I watched it break up with her husband from a boat this morning. Most everyone south of me lost their home. Town had 5 ft of water on main street. We had a 9 ft surge for 24 hrs. Boats litter the town.
975,000 without power on Long Island (90%) , 3.5 million out in NY state, over 6 million in NY/NJ. 10% of Long Island homes under water. 200 homes burned last night in my county. Four people drowned in my town. 36 hours I will always remember.

Tomorrow starts repairs if I can get any supplies. My friend's son let me borrow his laptop air phone card for a bit. Only form of communication that works here now. Emailed all family and friends. Goin to return the card and go to bed... Thanks again for your thoughts!
 

bowman316

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Re: "SUPER STORM" for the northeast?

we never even lost power here in baltimore. My parents did up in harford county, but it did not seem to be that bad at all.

the chesapeke bay did not even flood that bad. just a few inches over the docks.
The one picture of the boat was taken on sunday, the other was taken this afternoon.

That water is supposed to be about 5 ft below the docks.
 

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MH Hawker

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Re: "SUPER STORM" for the northeast?

I am here in WV and so far it hasn't been bad just a lot of snow 3 feet in the high mountains and about 8 to 10 inches where I am at.
 

Trooper82

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Re: "SUPER STORM" for the northeast?

Watching NBC special report on the devastation...I've been busy with work all day and had no idea things were as bad as they are...feel bad for all the people impacted by this storm...
 

DECK SWABBER 58

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Re: "SUPER STORM" for the northeast?

Thanks to all who mentioned concern. Family is fine. Dog is no smarter but more experienced. My home is damaged but repairable. I spent the day helping brother in law and friends not so fortunate. I helped them take what was salvagable to a storage facility. My wife's best friend lost her home and I watched it break up with her husband from a boat this morning. Most everyone south of me lost their home. Town had 5 ft of water on main street. We had a 9 ft surge for 24 hrs. Boats litter the town.
975,000 without power on Long Island (90%) , 3.5 million out in NY state, over 6 million in NY/NJ. 10% of Long Island homes under water. 200 homes burned last night in my county. Four people drowned in my town. 36 hours I will always remember.

Tomorrow starts repairs if I can get any supplies. My friend's son let me borrow his laptop air phone card for a bit. Only form of communication that works here now. Emailed all family and friends. Goin to return the card and go to bed... Thanks again for your thoughts!
I am saying a prayer tonight and tomorrow and the next day....... That you and everyone else impacted by this are blessed with the strength, courage, wisdom and patience that you need to get through this.
 

dingbat

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Re: "SUPER STORM" for the northeast?

This was just as bad because of the unusually high barometric pressure
Yet, the superstorm's climbing barometric pressure is more typical of category 3 or category 4 storms, making it likely that Hurricane Sandy will rank relatively high on the list of the most intense hurricanes to hit the U.S. since 1851.
According to a recent bulletin from NOAA's National Hurricane Center, Hurricane Sandy's minimum central pressure is hovering around 940 millibars. Comparatively, Hurricane Katrina, which hit Louisiana and Mississippi in 2005, was classified as a category 3 hurricane with a barometric pressure of 920 millibars -- making it slightly more intense than Hurricane Sandy's present levels.

Hurricanes and North? Easters are areas of low pressure. The pressure drops, not climbs.;)

Barometric pressure values do not reflect wind speeds. The wind speed of a hurricane depends on both its size and how rapidly the pressure drops as the hurricane's center approaches. Thus, a hurricane in an environment of high pressure will have stronger winds than a hurricane in an environment of low pressure, even if they have identical central pressures. While Sandy's pressure was low, so was the surrounding atomsphere, thus the low wind speeds in relation to pressure.

Sandy made landfall as a post-tropical cyclone with sub-75 MPH winds. Sure, lots of damage, at least on the north side of the storm, but hardly the monster storm it's being made out to be by the media. Had a category 3 storm like Katrina (111-130 mph) or a cat 5 like Camille (155 mph+) came on shore last night and passed within 40 miles of the house, I sure as heck wouldn't be at my keyboard this evening.;)
 

JoLin

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Re: "SUPER STORM" for the northeast?

Sandy made landfall as a post-tropical cyclone with sub-75 MPH winds. Sure, lots of damage, at least on the north side of the storm, but hardly the monster storm it's being made out to be by the media.

Depends on your definition of 'monster storm.' In terms of property damage and human dislocation in southern NY and NJ, Sandy was epic. Tidal surge was at least 3' higher than Irene last year. As of yesterday afternoon, 80% of LI and all of lower Manhattan was without power. Couple of friends' houses were inundated, and one's a total loss. Insurance losses will be astronomical. No idea of the condition of the barrier beaches (Fire Island). If they've suffered major damage and breaching, that sets us up for more of the same during the winter nor'easters.

In this case, media 'hype' in this area was dead-on accurate, and mandatory evacuation of waterfront communities saved a lot of lives. I have no idea if Escapade II made it through, and probably won't know before the weekend. It's impossible to get into most areas along the south shore of LI, which is where my marina and boat are. I've lived on LI all my life (59 years), and I've never seen anything to equal this.

My .02
 
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