ATL: SANDY - Remnants - Discussion

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Terry
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Re: ATL: SANDY - Post-Tropical - Discussion

#3721 Postby Terry » Tue Oct 30, 2012 6:16 am

Good morning and good luck to those who are waking up in the middle of a real nightmare.

Amazing wave 32.5 feet at NY Harbor as reported on CNN and HERE on WeatherBug, along with some other facts.
Note: we need a sticky for "records."

The Weather Service reports the buoy at the entrance to New York Harbor reached a record 32.5 feet, surpassing the former record of 26 feet set during Irene in August 2011.
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#3722 Postby WeatherGuesser » Tue Oct 30, 2012 6:35 am

SUMMARY OF 500 AM EDT...0900 UTC...INFORMATION
-----------------------------------------------
LOCATION...40.5N 77.0W
ABOUT 15 MILES...24 KM...E OF YORK PENNSYLVANIA.
ABOUT 90 MILES...145 KM...W OF PHILADELPHIA PENNSYLVANIA.
MAXIMUM SUSTAINED WINDS...65 MPH...105 KM/H
PRESENT MOVEMENT...WNW OR 295 DEGREES AT 15 MPH...24 KM/H
MINIMUM CENTRAL PRESSURE...960 MB...28.35 INCHES
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Re: ATL: SANDY - Post-Tropical - Discussion

#3723 Postby tolakram » Tue Oct 30, 2012 6:46 am

There shouldn't be any big issues with surge flooding during this mornings high tide. Still about 2 feet above normal but continuing to drop.

Image

source: http://tidesandcurrents.noaa.gov/geo.sh ... on=8518750
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Re: ATL: SANDY - Post-Tropical - Discussion

#3724 Postby wxman57 » Tue Oct 30, 2012 6:48 am

65mph seems quite high. On average, winds across PA are less than 25 mph. It's hard to find any 30 mph wind inland now (sustained). There are still some 40 mph winds out over the Atlantic, like the buoy east of Chesapeake Bay at 40 mph now.
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#3725 Postby galaxy401 » Tue Oct 30, 2012 6:50 am

Getting windy over here now. Of course it'll be nothing compared to the East Coast...
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#3726 Postby Frank2 » Tue Oct 30, 2012 7:12 am

TWC mentioned that the highest wave measured in New York harbor was almost 33 feet - that's hard to comprehend but true...

Anyone like myself who's been there knows that usually the harbor does not see anything more than 3 or 4 foot waves, so again a 33 foot wave is hard to comprehend, but it did happen...

Once during my NOAA days we did get an observation during a 1985 or 1986 hurricane of a rouge wave that passed one of the NOAA buoys and measured a height of 108 feet - the amount of energy that's needed to produce these large waves is hard to comprehend...

I'm repeating myself but what happened yesterday and last evening is something for us all to consider quietly...

Frank
Last edited by Frank2 on Tue Oct 30, 2012 7:30 am, edited 1 time in total.
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Re:

#3727 Postby MBryant » Tue Oct 30, 2012 7:29 am

Frank2 wrote:TWC mentioned that the highest wave measure in New York harbor was almost 33 feet - that's hard to comprehend but true...

Anyone like myself who's been there knows that usually the harbor does not see anything more than 3 or 4 foot waves, so again a 33 foot wave is hard to comprehend, but it did happen...

Once during my NOAA days we did get an observation during a 1985 or 1986 hurricane of a rouge wave that passed one of the NOAA buoys and measured a height of 108 feet - the amount of energy that's needed to produce these large waves is hard to comprehend...

I'm repeating myself but what happened yesterday and last evening is something for us all to consider quietly...

Frank


Forgive my ignorance, but is the wave measured from the peak to trough or peak to sea level? It makes about 16 feet of difference, I think.
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#3728 Postby Frank2 » Tue Oct 30, 2012 7:31 am

I don't know for certain when it comes to last night's wave - perhaps one of the Pro Mets can help, but if it's a NOAA buoy observation it's from trough to peak (crest)...

Here's a good explanation:

http://www.ndbc.noaa.gov/wavecalc.shtml
Last edited by Frank2 on Tue Oct 30, 2012 7:35 am, edited 1 time in total.
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Re: Re:

#3729 Postby wxman57 » Tue Oct 30, 2012 7:34 am

MBryant wrote:
Frank2 wrote:TWC mentioned that the highest wave measure in New York harbor was almost 33 feet - that's hard to comprehend but true...

Anyone like myself who's been there knows that usually the harbor does not see anything more than 3 or 4 foot waves, so again a 33 foot wave is hard to comprehend, but it did happen...

Once during my NOAA days we did get an observation during a 1985 or 1986 hurricane of a rouge wave that passed one of the NOAA buoys and measured a height of 108 feet - the amount of energy that's needed to produce these large waves is hard to comprehend...

I'm repeating myself but what happened yesterday and last evening is something for us all to consider quietly...

Frank


Forgive my ignorance, but is the wave measured from the peak to trough or peak to sea level? It makes about 16 feet of difference, I think.


Waves are measured from peak to trough, so a 33 foot wave would be 16.5 ft above MSL for the crest and 16.5ft below MSL for the trough. The black dashed line in the example image below is mean sea level (MSL). Half the wave is above it, half below it.

Image
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Re: Re:

#3730 Postby MBryant » Tue Oct 30, 2012 7:38 am

wxman57 wrote:
Waves are measured from peak to trough, so a 33 foot wave would be 16.5 ft above MSL for the crest and 16.5ft below MSL for the trough. The black dashed line in the example image below is mean sea level (MSL). Half the wave is above it, half below it.

http://www.paddlinglight.com/pl/wp-cont ... 6/wave.png


Thanks.
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Re: ATL: SANDY - Post-Tropical - Discussion

#3731 Postby Frank2 » Tue Oct 30, 2012 7:41 am

Thanks from me, too - that's a remarkable wave...
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Re: ATL: SANDY - Post-Tropical - Discussion

#3732 Postby Andy_L » Tue Oct 30, 2012 7:51 am

Also, just to note, that wave was measured OUTside the harbor, not inside i believe.
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Re: ATL: SANDY - Post-Tropical - Discussion

#3733 Postby tolakram » Tue Oct 30, 2012 8:09 am

All information below from: http://web.live.weatherbug.com/StormCen ... 2217-14162

- The Weather Service reports the buoy at the entrance to New York Harbor reached a record 32.5 feet, surpassing the former record of 26 feet set during Irene in August 2011.

- According to the New York Times, the water level at the bottom of Manhattan was 10.7 feet at 7:20 p.m., breaking the record of 10.0 feet set by Hurricane Donna in 1960.

- Islip International Airport, N.Y., clocked a gust of 90 mph.

- North Arlington, N.J., saw a gust to 81 mph.

- Ocean City, Md., which saw its fishing pier collapse, also recorded a gust of 74 mph.

- Powerful winds stretched as far inland as Cleveland, Ohio, which recorded a 68 mph gust.

- Very impressive rainfall accompanied this storm, with Mercersburg, Pa., leading the way with 14.45 inches of rain.

- Andrews Air Force Base, Md., was close, recording 12.64 inches of rain

- Cape May, N.J., near the point where Sandy came ashore, saw 9.91 inches of rain

- Since "blizzard" always comes to mind when you think of a tropical storm, heavy snow has been falling across West Virginia`s mountains. Seventeen inches of snow has fallen in Webster Springs, W.Va.

- Four inches of powder has fallen in Tornado, W.Va

Power Outages

New Jersey: 2.13 million
New York: 1.77 million
Pennsylvania: 1.23 million
Connecticut: 628,904
Maryland: 311,600
Massachusetts: 309,801
Ohio: 255,986
Virginia: 151,790
New Hampshire: 134,085
Rhode Island: 114,374
Maine: 79,711
West Virginia: 77,955
Delaware: 77,680
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Re: ATL: SANDY - Post-Tropical - Discussion

#3734 Postby ObsessedMiami » Tue Oct 30, 2012 8:10 am

Hearing from my NWS contact that the buoy was 15 miles from the harbor entrance but still
impressive
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#3735 Postby superdeluxe » Tue Oct 30, 2012 8:12 am

Updated: 10/30/2012 08:51am

NEW YORK (AP) — A huge fire destroyed between 80 and 100 houses in a flooded neighborhood in the New York City borough of Queens.

More than 190 firefighters have contained the six-alarm blaze fire in the Breezy Point section, but they are still putting out some pockets of fire.


http://m.usatoday.com/article/news/1668 ... iclePage=0


Update on previous fire
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Re: ATL: SANDY - Post-Tropical - Discussion

#3736 Postby Terry » Tue Oct 30, 2012 8:14 am

It was measured at the entrance to the harbor. HERE is something I posted from WeatherBug earlier today, which mentions the wave and other records set by the storm. The Weather Service reports the buoy at the entrance to New York Harbor reached a record 32.5 feet, surpassing the former record of 26 feet set during Irene in August 2011.

Andy_L wrote:Also, just to note, that wave was measured OUTside the harbor, not inside i believe.
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Re: ATL: SANDY - Post-Tropical - Discussion

#3737 Postby Andy_L » Tue Oct 30, 2012 8:38 am

Terry wrote:It was measured at the entrance to the harbor. HERE is something I posted from WeatherBug earlier today, which mentions the wave and other records set by the storm. The Weather Service reports the buoy at the entrance to New York Harbor reached a record 32.5 feet, surpassing the former record of 26 feet set during Irene in August 2011.

Andy_L wrote:Also, just to note, that wave was measured OUTside the harbor, not inside i believe.


It was measured at bouy 44065 which is listed as 'at the entrance to NY harbor'....which is 15nm from the entrance.

http://www.ndbc.noaa.gov/
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Re: ATL: SANDY - Post-Tropical - Discussion

#3738 Postby Stephanie » Tue Oct 30, 2012 8:42 am

High wind warning cancelled for my area, may get some gusts later. I still have power which is a miracle in itself since I normally lose it for thunderstorms and many other stupid things. The trees stayed vertical and I feel VERY FORTUNATE.
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Re: ATL: SANDY - Post-Tropical - Discussion

#3739 Postby Terry » Tue Oct 30, 2012 8:51 am

That's good to hear, Stephanie! I still waiting from an update from my friend on Cape May. I did read that the mayor said that they made it through pretty well!

Stephanie wrote:High wind warning cancelled for my area, may get some gusts later. I still have power which is a miracle in itself since I normally lose it for thunderstorms and many other stupid things. The trees stayed vertical and I feel VERY FORTUNATE.
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Re: ATL: SANDY - Post-Tropical - Discussion

#3740 Postby Stephanie » Tue Oct 30, 2012 8:53 am

Terry wrote:That's good to hear, Stephanie! I still waiting from an update from my friend on Cape May. I did read that the mayor said that they made it through pretty well!

Stephanie wrote:High wind warning cancelled for my area, may get some gusts later. I still have power which is a miracle in itself since I normally lose it for thunderstorms and many other stupid things. The trees stayed vertical and I feel VERY FORTUNATE.


Your friend is probably busy in other parts of the shore that were affected more. Let me know when you hear from him.
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