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Post by nei on Feb 3, 2018 15:14:32 GMT -5
Warmest in Norway @ 19:00: 2.3C Akseløya, Svalbard archipelago (78 N)!! dug up some screenshots at weather.us. Surface temperature anomalies in °F  so it's more the rest of Norway is cold than Arctic Norway is especially warm. More maps, keeping them under a spoiler to not overwhelm this thread  sea to the north of Arctic Norway is unusually mild, air is forecast to go northward to the pole and make it go to the freezing point. or rather melting. Easier to see the pattern with geopotential heigh anomalies.  for Europe  850 hPa temperatures for Europe  only -12°C for Norway? We had -17°C yesterday. -25°C in northern New York State, -8°C by Cape Cod in SE Massachusetts and eastern Maine. Which is why our cold air mass had so much wind; extreme cold air mass are accompanied by big contrasts with more normal air. Down to -30°C at 850 hPA at 48°N in Quebec  |
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Post by Nidaros on Feb 3, 2018 16:14:29 GMT -5
Warmest in Norway @ 19:00: 2.3C Akseløya, Svalbard archipelago (78 N)!! dug up some screenshots at weather.us. Surface temperature anomalies in °F so it's more the rest of Norway is cold than Arctic Norway is especially warm. More maps, keeping them under a spoiler to not overwhelm this thread sea to the north of Arctic Norway is unusually mild, air is forecast to go northward to the pole and make it go to the freezing point. or rather melting. Easier to see the pattern with geopotential heigh anomalies. for Europe 850 hPa temperatures for Europe only -12°C for Norway? We had -17°C yesterday. -25°C in northern New York State, -8°C by Cape Cod in SE Massachusetts and eastern Maine. Which is why our cold air mass had so much wind; extreme cold air mass are accompanied by big contrasts with more normal air. Down to -30°C at 850 hPA at 48°N in Quebec Nice maps! Seems our arctic air was not as cold as the Arctic outbreak you recently had in Eastern North America. Mainland Norway certainly is colder than average. It is also at the same time warmer than average at the high Arctic Svalbard Archipelago now, with 0.6C in Longyearbyen tonight, 16C above avg (61-90), and forecast next 48 hrs is for rain, sleet and up to 3C. We are now @ 21:00 recording -9C at the airport, forecast is for temps to rise here from tomorrow. In the central Norwegian mountains, Folldal (694 m) is recording -33C. Might be colder there the coming night than last night which went to -35C. |
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Post by Ariete on Feb 3, 2018 21:26:23 GMT -5
Very nasty storm approaching Iceland ATM:  |
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Post by ral31 on Feb 3, 2018 22:51:20 GMT -5
NOAA's 7 day forecast looks pretty wet for the South. 5-7 inches over Mississippi.  |
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Post by Deleted on Feb 4, 2018 6:11:38 GMT -5
 frigid temperatures in the north. |
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Post by Nidaros on Feb 4, 2018 6:15:37 GMT -5
^That's the overnight lows, very cold in places but no -40C. And the normal glitches still there, both south and north.
Cold also in the central mountains in the south: Folldal and Tynset -36C, Røros -32C.
Low of -10.7C here at the airport.
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Post by Deleted on Feb 4, 2018 7:32:36 GMT -5
 today's ice map. bothnian bay has frozen over now. |
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Post by Babu on Feb 4, 2018 7:53:44 GMT -5
No it hasn't. Just look at the satellite image. Not completely cloud free sadly. Today is, so we'll have better images tomorrow.  |
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Post by rozenn on Feb 4, 2018 8:47:19 GMT -5
What's the elevation of Folldal? It's always one of the colder stations despite being rather southerly and not that far inland. I understand that topography helps. Was funny to go through locations often mentioned on C-D for how cold they are this summer. Should see some snow tomorrow thanks to cold air @850 hPa:  Snow depth as of Wednesday morning from the latest GFS run:  Much worse than yesterday's 18Z run for my neck of the woods.   |
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Post by Nidaros on Feb 4, 2018 9:04:44 GMT -5
^^Let's hope you get some snow, Rozenn! Folldal at 694 m ASL is "isolated" from oceanic influences by mountain ranges to the north (Dovre) and west. It is actually the first valley on the southern slopes of the Dovre mt range, so yes topography is very important. Had a low of -36.8C last night, coldest in Norway. By car, Folldal is a 195 km drive S from Trondheim. Tynset has the coldest winter averages in the southern part of the country, but that was before Folldal was started. Tynset is only at 482 m ASL and is colder in winter than Røros, but also warmer in summer. -36C last night in Tynset. www.infoclimat.fr/observations-meteo/temps-reel/tynset-ii/01265.html |
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Post by nei on Feb 4, 2018 9:24:49 GMT -5
Redding reached 79°F yesterday; it's at 40°N, almost the same latitude as NYC. Some parts of Washington State reached 60s. Forecast temperature departure map in the tweet. Very cold air in the plains, milder than average in the Northeast. Colder in the southern Appalachians, cold air damming not letting go.
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Post by nei on Feb 4, 2018 9:26:53 GMT -5
^^Let's hope you get some snow, Rozenn! Folldal at 694 m ASL is "isolated" from oceanic influences by mountain ranges to the north (Dovre) and west. It is actually the first valley on the southern slopes of the Dovre mt range, so yes topography is very important. Had a low of -36.8C last night, coldest in Norway. By car, Folldal is a 195 km drive S from Trondheim. Tynset has the coldest winter averages in the southern part of the country, but that was before Folldal was started. Tynset is only at 482 m ASL and is colder in winter than Røros, but also warmer in summer. -36C last night in Tynset. www.infoclimat.fr/observations-meteo/temps-reel/tynset-ii/01265.htmlBrr. That's much colder than the local free air temperatures… my map -12°C 850 hPa temperatures in that area. Cool air pooled at the valley bottom? |
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Post by Nidaros on Feb 4, 2018 9:52:25 GMT -5
^^Let's hope you get some snow, Rozenn! Folldal at 694 m ASL is "isolated" from oceanic influences by mountain ranges to the north (Dovre) and west. It is actually the first valley on the southern slopes of the Dovre mt range, so yes topography is very important. Had a low of -36.8C last night, coldest in Norway. By car, Folldal is a 195 km drive S from Trondheim. Tynset has the coldest winter averages in the southern part of the country, but that was before Folldal was started. Tynset is only at 482 m ASL and is colder in winter than Røros, but also warmer in summer. -36C last night in Tynset. www.infoclimat.fr/observations-meteo/temps-reel/tynset-ii/01265.htmlBrr. That's much colder than the local free air temperatures… my map -12°C 850 hPa temperatures in that area. Cool air pooled at the valley bottom? Yes, valley bottoms, inversion is strong at both Folldal and Tynset. As you can see from this image of Tynset: commons.wikimedia.org/wiki/File:Tynset_fra_bygda.jpg |
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Post by Deleted on Feb 4, 2018 10:11:14 GMT -5
would be interesting to know folldal's all-time low. cowboy-bob mentioned that there was an unofficial reading of -52C there. doesn't sound completly improbable considering roros all-time low of -50.4C.
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Post by bizzy on Feb 4, 2018 10:17:18 GMT -5
Redding reached 79°F yesterday; it's at 40°N, almost the same latitude as NYC. Some parts of Washington State reached 60s. Forecast temperature departure map in the tweet. Very cold air in the plains, milder than average in the Northeast. Colder in the southern Appalachians, cold air damming not letting go.  Granted, we’ve seen 70’s in the winter on various occasions, but it’s far more anomalous for us than it is for Redding. This climate sucks from Nov-Mar. |
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Post by Giorbanguly on Feb 4, 2018 11:29:01 GMT -5
This winter it seems like the coldest anomalies are just a drive away from the warmest anomalies. Idaho and the Pacific Northwest and even Western Montana seem to be super above average, while the Eastern side of Montana has the largest negative anomalies in the country. Kinda weird
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Post by Babu on Feb 4, 2018 14:11:13 GMT -5
Nikkaluokta managed to hit -40.1'C today, the first in Scandinavia (and europe?) this year.
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Post by rozenn on Feb 4, 2018 15:15:11 GMT -5
I think spots between Arkhangelsk and Vorkuta dipped below -40°C at some point in January.
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Post by Giorbanguly on Feb 5, 2018 1:42:56 GMT -5
GFS is now the one showing a monstrous torch after February 10th. Euro is showing above average temperatures, but only by a little
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Post by Ariete on Feb 5, 2018 2:57:55 GMT -5
www.bbc.com/news/world-europe-42939644Moscow has seen its heaviest snowfall in a day since records began, with more than 2,000 trees brought down and air travel disrupted, officials say. More than half the monthly average snow - 38cm (15 inches) - fell on Saturday, beating the previous record from 1957.
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