dash8pilot
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North Atlantic Crossing

Mon Jan 21, 2013 4:12 pm

I was just browsing flightradar 24, I have noticed that most west bound traffic crossing the Atlantic ocean are using a very northerly routing today (Monday, 1600 Zulu), anyone know why?
 
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longhauler
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RE: North Atlantic Crossing

Mon Jan 21, 2013 4:23 pm

Probably winds. The NAT tracks are set up for minimum wind west bound, maximum wind east bound.
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SpaceshipDC10
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RE: North Atlantic Crossing

Mon Jan 21, 2013 4:28 pm

Most probably winds. It's been like since a few days already. For instance, AC831 has just flown off the tip of Greenland, but last week that same flight flew right over Greenland soil. Also last week, one day AC830 left YUL half an hour late, if not more, and arrived one hour early at its destination.
 
Mir
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RE: North Atlantic Crossing

Mon Jan 21, 2013 4:33 pm

Quoting longhauler (Reply 1):
Probably winds.

Yup. The jetstream is currently very wide and strong, and to get around it you need to go pretty far north.

http://i1302.photobucket.com/albums/ag133/originalusernamehere/ATLJetstream012113_zps70b2d5c0.gif

The southern-most track today goes up to 58N (the top of the shaded area). If you go a little further north, you can actually get a bit of a tailwind going west, which will compensate a little bit for the increased distance.

-Mir
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rwy04lga
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RE: North Atlantic Crossing

Mon Jan 21, 2013 4:34 pm

As an airline pilot, you should've known the obvious answer.   Perhaps you were just testing us.
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dash8pilot
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RE: North Atlantic Crossing

Mon Jan 21, 2013 4:45 pm

Well it was my first guess, but remember not to many dash 8 pilots are trained to cross the atlantic..
 
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SpaceshipDC10
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RE: North Atlantic Crossing

Mon Jan 21, 2013 5:01 pm

Quoting Mir (Reply 3):

Thanks for the map.Quite strong winds indeed.
 
e38
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RE: North Atlantic Crossing

Fri Jan 25, 2013 8:14 pm

Quoting rwy04lga (Reply 4), "As an airline pilot, you should've known the obvious answer."

rwy04lga, he's just a kid; as he mentioned, probably has not had a transatlantic crossing yet.

Mir, the graphics are excellent.

e38

[Edited 2013-01-25 12:15:54]
 
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SpaceshipDC10
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RE: North Atlantic Crossing

Sat Mar 02, 2013 10:35 am

There must be some pretty strong westerly winds over the Atlantic these days. As I regularly follow AC 830/831 flights, I noticed eastbound flights going up above Greenland and getting late, while westward flights leaving late arrived either on time or early.
 
CosmicCruiser
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RE: North Atlantic Crossing

Sat Mar 02, 2013 2:35 pm

Quoting SpaceshipDC10 (Reply 8):
I noticed eastbound flights going up above Greenland and getting late, while westward flights leaving late arrived either on time or early.

Is that what you meant to say? Strong west winds and eastbound flts late while west bound early. Not usually.
 
rfields5421
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RE: North Atlantic Crossing

Sat Mar 02, 2013 3:12 pm

Quoting dash8pilot (Reply 5):
Well it was my first guess,

The San Francisco State University maps are excellent and always available. The loop feature is good at showing the recent changes.

http://squall.sfsu.edu/crws/jetstream.html
 
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SpaceshipDC10
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RE: North Atlantic Crossing

Sat Mar 02, 2013 4:49 pm

Quoting CosmicCruiser (Reply 9):
Is that what you meant to say? Strong west winds and eastbound flts late while west bound early. Not usually.

No, what I meant to say is westbound flights arrived in Canada on time or early even though they had left late, while those going to Europe followed a more northerly route, producing a detour. Last night's flight flew right over the tip of Greenland, a month or so ago, it was the flight going the opposite way that followed that route. So I guess there are strong east winds over the Atlantic.
 
Viscount724
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RE: North Atlantic Crossing

Sat Mar 02, 2013 10:43 pm

Quoting SpaceshipDC10 (Reply 8):
There must be some pretty strong westerly winds over the Atlantic these days. As I regularly follow AC 830/831 flights, I noticed eastbound flights going up above Greenland and getting late, while westward flights leaving late arrived either on time or early.

I flew on AC831 GVA-YUL on February 22. It left about half an hour late but arrived 10 minutes early. The captain said the delayed departure was due to unusual winds on the eastbound flight and the resulting arrival about 45 minutes late.

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