Dr. Jeff Masters' WunderBlog

First Hurricane Sandy, now Winter Storm Athena for the Eastern U.S.
Posted by: Dr. Jeff Masters, 2:57 PM GMT on November 07, 2012 +30
Winter Storm Warnings are up for Southwest New Jersey, Northern Delaware, and Southeast Pennsylvania, including Philadelphia, PA, where Winter Storm Athena is expected to drop 3 - 5" of snow today through Thursday morning. Slushy accumulations of up to 1" are likely in Baltimore, and non-accumulating snow will fall as far south as Washington, DC. Athena, the season's first Nor'easter and first winter storm to get a name under The Weather Channel's new naming system, is spreading rain and high winds into Southern New Jersey and Eastern Long Island, NY this morning. Winds at buoy 44025, about 40 miles offshore from the coast of Central New Jersey, reached 40 mph, gusting to 49 mph, with a significant wave height of 14', at noon EST. Winds at Nantucket, MA have gusted as high as 54 mph this morning. Athena is building a storm surge that has already reached 2.2' at Atlantic City and 1.8' at New York City as of noon EST. A storm surge of 2 - 3.5' is likely along the section of coast most heavily damaged by Sandy's storm surge, and battering waves up to 20' high will cause moderate beach erosion along much of the New Jersey and New York shoreline. The storm surge will cause minor to moderate flooding during this afternoon's high tide cycle near 1 pm EST, and again at the next high tide, near 1 am EST Thursday morning. Fortunately, the high tides this week will be some of the lowest of the month, since we are midway between the new moon and full moon. Wind gusts from Athena will likely reach 50 mph along the coasts of New Jersey and Southern Long Island, NY, and could hit 60 mph on Cape Cod, Massachusetts. I expect that Athena's winds, rains, and wet, heavy snows will cause up to 50,000 new power outages today. As of early Wednesday morning, 676,000 customers were still without power in the wake of Hurricane Sandy (down from a peak of 8.5 million customers.)


Figure 1. Winter Storm Athena as seen at 9:01 am EST November 7, 2012. Image credit: NOAA/GSFC.


Figure 2. Predicted storm surge at Sandy Hook, NJ, for Winter Storm Athena, from the experimental Extratropical Storm Surge model, run by NOAA's Meteorological Development Laboratory. This model used winds from this morning's 6Z (1 am EDT) run of the GFS model. The peak storm surge (yellowish-brown line) is predicted to be 3.4', occurring Wednesday evening. High tide (green line) occurs near 1 pm Wednesday afternoon, resulting in a peak storm tide of approximately 7.2' around 1 pm Wednesday (black line). For comparison, Sandy delivered a 8.6' storm surge to Sandy Hook before their tide gauge failed, with the storm tide reaching 13.2' above MLLW (Mean Lower Low Water.)

The decision to name Athena
The Weather Channel announced in October that they would begin naming winter storms this year, in an effort to aid in raising awareness and reduce the risks the public faces. One of the main criteria for naming a storm is its impact on populated areas; the meteorology of the storm may not get it named, if the storm doesn't affect a populated area. If Hurricane Sandy had not devastated the region of coast being affected by today's Winter Storm Athena, it may not have gotten a name. With so many people still under recovery efforts even well inland, the combination of heavy, wet snow and wind prompted the decision to name Athena. The models have been trending towards more cold air getting pulled into this system, so it is possible Athena could drop heavier snows than currently advertised. The National Weather Service will not be referring to today's Nor'easter as "Athena". They put out this internal directive: "The NWS does not use named winter storms in our products. Please refrain from using the term Athena in any of our products."

Here are the peak wind gusts from Athena as of 11 am EST on Wednesday, November 7, 2012:



Jeff Masters
Categories: Winter Weather Athena
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602. GeoffreyWPB 2:51 PM GMT on November 08, 2012    
Member Since: September 10, 2007 Posts: 0 Comments: 9108
603. barbamz 2:52 PM GMT on November 08, 2012    
Storm Aftermath: Continuing Coverage
By THE NEW YORK TIMES

Wednesday’s snowy northeaster knocked out power to nearly 350,000 homes in New York and New Jersey and interrupted train service on the Long Island Rail Road, setting back the recovery effort in a region still reeling from Hurricane Sandy.

More


Good morning over there ... I'm sorry to see those news. --- Tomorrow I'll leave for two days to take part in a conference in Switzerland. I've just heard that several lecturers from the US probably won't be able to come because their flights were cancelled or they got stuck at the airport due to beloved "Athena"...

Best greetings and good recovery for you people in the NE! See you next week. Barb
Member Since: October 25, 2008 Posts: 24 Comments: 1578
604. yonzabam 2:57 PM GMT on November 08, 2012    
Quoting trHUrrIXC5MMX:


sir...50 mph are quite strong. Those could knock out your power


All depends on the time span the gust has to be maintained for to be designated as that wind speed.

I believe hurricane winds have to be maintained for 60 seconds, for the wind speed to be official. Here in the UK, the gusts of gales have to be maintained for just 10 seconds to be official.

So, a 80mph hurricane will do much more damage than a 80 mph gale would do. I don't know what the situation is with a nor'easter over your way, though.
Member Since: July 20, 2008 Posts: 0 Comments: 1691
605. trHUrrIXC5MMX 2:57 PM GMT on November 08, 2012    
Quoting barbamz:
Storm Aftermath: Continuing Coverage
By THE NEW YORK TIMES

Wednesday’s snowy northeaster knocked out power to nearly 350,000 homes in New York and New Jersey and interrupted train service on the Long Island Rail Road, setting back the recovery effort in a region still reeling from Hurricane Sandy.

More


Good morning over there ... I'm sorry to see those news. --- Tomorrow I'll leave for two days to take part in a conference in Switzerland. I've just heard that several lecturers from the US probably won't be able to come because their flights were cancelled or they got stuck at the airport due to beloved "Athena"...

Best greetings and good recovery for you people in the NE! See you next week. Barb


did the NYT use the term "Athena".. Just curious
Member Since: April 23, 2011 Posts: 32 Comments: 7878
606. AussieStorm 2:58 PM GMT on November 08, 2012    
Goodnight all. Rain has stopped but I can hear the creek flowing next to my place. Catch you all in the morning.
Member Since: September 30, 2007 Posts: 5 Comments: 13272
607. AussieStorm 3:00 PM GMT on November 08, 2012    
Quoting trHUrrIXC5MMX:


did the NYT use the term "Athena".. Just curious

Yes twice...

Just when Consolidated Edison customers thought it was safe to put away the flashlights, Athena blew into town.

The northeaster called Athena (by the Weather Channel) started tearing down power lines on Wednesday faster than an army of repair crews could put them back up.
Member Since: September 30, 2007 Posts: 5 Comments: 13272
608. Tazmanian 3:19 PM GMT on November 08, 2012    
El Niño Watch Discontinued


Link
Member Since: May 21, 2006 Posts: 5088 Comments: 111320
609. WunderAlertBot (Admin) 3:28 PM GMT on November 08, 2012    
JeffMasters has created a new entry.
610. plutorising 4:07 PM GMT on November 08, 2012    
Quoting Neapolitan:
It's not true. From FEMA's rumor control page:

FEMA

Also here: http://www.snopes.com/fraud/employment/femasandy. asp


so sorry to spread fake news. it sounded like such a good idea.
Member Since: August 30, 2008 Posts: 0 Comments: 73
611. MontanaZephyr 4:27 PM GMT on November 08, 2012    
For those that like to watch it snow, here is a link to Montana Web Cams Link

Especially pretty is this one from MacDonald Lake in Glacier Park, although the storm is probably not going to affect the far Northwestern part of the state so much Link
Member Since: May 21, 2007 Posts: 0 Comments: 427

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About JeffMasters
Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.

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