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Snow & Ice coverage in the Northern Hemisphere Winter 2018/19

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Posted (edited)

Euro develops a trough near northern Siberia in about a week with -10 air so worth a look then. 

ECMOPNH00_240_1.png

Edited by summer blizzard
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Another historically great thread. My favourite time of the year is approaching! 👍

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The Canadian Islands of the Northwest Passage saw their first significant increase in settled snow on 18th August, with Banks Island being first.  A little snow was seen to settle on the mainland on August 19th as it moved to other Islands. Further slight accumulations have occurred pretty much everyday with little sign of melting back so far. I can't post the older images but you can see the snow is still there in the current image, including snow that appeared on the Brooks Range of Alaska recently, as well.

cursnow_alaska.gif

 

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Is the passage almost open? Looks like they may be able to use the Canadian coastal route bar the thin stretch of ice at the end. 

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Posted (edited)

No. The Northwest Passage is not open. It is blocked in 3 places. It's a huge blockage of mixed concentrations of old ice at Alaska so won't melt much now but could easily move if wind and currents change.

https://www.weather.gov/afc/ice

It might ease to 1 blockage, given fair weather, but the Franklin Straight's old ice does not look much like giving way and some pleasure craft that had queued up for a week or two, waiting for it to melt, have started turning back as the usual navigable window starts to close and winter weather has started early (as per previous post).

https://ice-glaces.ec.gc.ca/prods/WIS38CT/20180822180000_WIS38CT_0010195609.pdf

https://saildogbark.com/2018/08/22/dogbark-turns-back/#more-1200

There is another pleasure craft that looks to have managed to trap itself for several days in the Franklin Straight but I have no detail.

The Northern Route/Northwest Passage along northern Russia only opened last week, so that's pretty late and might not be open very long this year. You can just see a sliver of ice peeping out over Russia in the link above where you'd normally expect plain sailing. That and the first snows in Siberia hint at an early freeze up. There seems to be dispersed ice floating about here and there that flits in an out of charts. (The image in the previous post only seems to show 90%+ ice which hides the overall amount of ice as it seems to be generally more dispersed this year.  The links in this one show lower concentrations which is rather more expansive - and too much if you are a sailing captain. It's worth noting that older ice is harder and does more damage!)

Edited by Aleman
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Love this thread and look forward to seeing the white pixels expanding daily!

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If it seems cool in the UK low down today, check out the windy heights. Cairngorm is showing rounded a rounded temperature of 1C at lunch (and 40mph wind gusting to 50+) and Great Dun Fell in Cumbria has 5C. I assume we'll get more precise numbers here later:

https://www.ogimet.com/cgi-bin/gsynres?ind=03065&lang=en&decoded=yes&ndays=2&ano=2018&mes=08&day=24&hora=10

https://www.ogimet.com/cgi-bin/gsynres?ind=03227&lang=en&decoded=yes&ndays=2&ano=2018&mes=08&day=24&hora=10

Some forecasts suggest possible snow today and tomorrow on the top of Cairgorm. I would imagine that does not happen often in August?

https://www.mountain-forecast.com/peaks/Cairngorm/forecasts/1234

 

Anyone really keen to see early snow might be able to go see it in person tomorrow if they wish!

 

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More snow for Canadian islands. (A few more yellow pixels in the sea there.)  A bit more snow for the nothern Canadian mainland and southern Alaskan mountains. The Siberian snow has melted back but not seeing much melt in Canada.

cursnow_alaska.gif

 

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1 hour ago, Aleman said:

More snow for Canadian islands. (A few more yellow pixels in the sea there.)  A bit more snow for the nothern Canadian mainland and southern Alaskan mountains. The Siberian snow has melted back but not seeing much melt in Canada.

cursnow_alaska.gif

 

alas the thread of doom!

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A foot of snow for parts of the Alps

https://www.snow-forecast.com/whiteroom/august-snowfall-in-the-alps-up-to-30cm-falls/

And it looks like the weather system that brought fleeting wet snow to Cairngorm is dropping white stuff on Norwegian tops, too. Possible early snow predicted down the Rockies into the USA over the next couple of days.

http://www.meteociel.fr/modeles/gfse_cartes.php?mode=16&ech=6&carte=1

 

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A few new pixels for Siberia but Canada's have melted back quite a bit. Big snows are still pencilled in for Alaska and NW Canada from 31st August.

Arctic ice melt has nearly ceased. It's started freezing again above 80N but the majority of ice is in areas below 80N and some is still melting, e.g. Northwest passage between 70N and 75N is still melting a little but still blocked in two places (Alaska and Franklin Straight).  The Northeast Passage/Northern Route is threatening to close at 160E after only two weeks open but this is more movement than freezing. You can see slight ice increases above 80N best at Greenland by the green turning yellow and yellow to red in these latest two between the 22nd and 26th. Also the yellow at 15-20E expands south and the red edge at 5E and above 80N expands towards 10E.

http://www.dmi.dk/uploads/tx_dmidatastore/webservice/r/u/o/l/o/chart0_Greenland_201808221200_Colour.pdf

http://www.dmi.dk/uploads/tx_dmidatastore/webservice/r/u/o/l/o/chart0_Greenland_201808261200_Colour.pdf

 

The Arctic has gone back into winter mode and it is beginning it slow creep south.

 

 

 

 

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Posted (edited)

There's been fairly widepread snow in Idaho, Montana, Wyoming and even Colorado but NOAA hasn't caught up yet. There are, though, about a dozen new pixels below Canada if you look closely!

cursnow_usa.gif

Meteociel 6-hour forecast shows better where it has been snowing

http://www.meteociel.fr/modeles/gfse_cartes.php?mode=16&ech=6&carte=1

Meteociel suggests winter stops teasing us and starts moving in properly in a couple of days.

 

Edited by Aleman
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there was snow across Western Alberta yesterday...probably be some more in the foothills today..tis cold and wet here this morning..more like mid October 

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Posted (edited)

Caught up with us snows now - though you still need to expand the image to see it!

 

cursnow_usa.gif

 

 

Edited by Aleman

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A week ago, summer blizzard asked about the Northwest Passage, which was not yet open. Several yachts have been queued up waiting for it to open but the Coast Guard advised against after the Franklin Straight started to freeze up early, helped by some early snows and freezing drizzle, which have continued. One of at least 4 that did not heed advice has now been crushed by ice and sunk. Two passengers were rescued by helicopter after 11 hours on ice at risk of polar bears. The return escape route for a couple of yachts that remain there is starting to look a bit dodgy on ice charts. The Northwest Passage is still blocked in 3 places.

http://arcticnorthwestpassage.blogspot.com/2018/08/canadian-coast-guard-takes-11-hours-to.html?view=sidebar

 

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The expected snow arrived on the Brooks Mountains and Northern Slope of Alaska. Meteociel make it look a bit more widespread an dindicate a lot more to come, moving east across the mainland's north coast. (Also the Northwest Passage looks nearly open on NOAA but they don't seem to show the full ice picture that is causing loads of problems - only the areas that are 90%+ maybe?)
0

cursnow_alaska.gif

 

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