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Fish_On_again t1_j6x1h6b wrote

Why does it feel like this might be one and done for the winter in the northeast?

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mfb- t1_j6xcsfe wrote

This map would be easier to read without the southern hemisphere also visible in the coastlines.

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curiouscodex t1_j6xti66 wrote

What is going on with this map? NZ arse up by Alaska and on the wrong side of Aussie... Gets worse the more you look at it.

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Mathew_Barlow OP t1_j6wyubs wrote

data source: GFS, from NOMADS server; visualization: ParaView

data link: https://nomads.ncep.noaa.gov/dods/gfs_0p25

At approximately 1.5 km up in the atmosphere, the coldest temperatures in the world are over Hudson Bay and headed for the US. Looking at the lower atmosphere rather than the surface temperature (mostly) removes the influence of elevation. The temperatures are shown in degrees Celsius on the 850 hPa pressure level, which is approximately 1.5 km above the surface.

Mathew Barlow
Professor of Climate Science
University of Massachusetts Lowell

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EduardH t1_j6xvqyg wrote

>Looking at the lower atmosphere rather than the surface temperature (mostly) removes the influence of elevation.

I live in Colorado, at approximately 1600 m elevation (so slightly higher than shown here). I'm sure that wave of -40C won't lead to those same temperatures here, but how does elevation play a role? Do these temperatures then appear at 1500+1600=3100 m elevation?

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mata_dan t1_j6zv4o8 wrote

I think those parts of the atmosphere, or rather the flow/currents, tend to be higher up when the ground is also higher up.

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Dishwallah t1_j6y4rt9 wrote

You know how when you check the temp it says "feels like" a lower temp? Being at ground level changes that so the elevation makes it more unbiased because humidity and wind

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MayonaiseBaron t1_j6x84bt wrote

The White Mountains in New Hampshire are predicted to get windchills as low as -100⁰.

Still will most likely not break the state record for lowest temp.

Edit: they broke the windchill record for the US

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nicholsmichael t1_j6x2a7x wrote

Who told about this, the groundhog? Jk. In all seriousness when is this happening?

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skipfairweather t1_j6x8dhb wrote

I live in the Great Lakes region in Canada and this has been a very mild winter. Which is nice temperature wise, but it also means we've had next to zero sunshine and a bunch of rain/wet snow that doesn't stick.

Happy to have a super frigid, but fully sunny day tomorrow (low of -17 Celsius). A nice break before it's 7 Celsius again and raining all through next week.

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40for60 t1_j6ywzlh wrote

We need a good week of -20 weather to kill of the ticks.

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OtherBluesBrother t1_j6xh835 wrote

Will this be The Day After Tomorrow?

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Xyrus2000 t1_j6xywom wrote

Hardly. Our winter temperatures have been well above normal. Where I am we'll have a couple days of cold and then temps will hit 50F next week.

Winters have been steadily going the way dodo here in New England.

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Mike2220 t1_j70fx3q wrote

I remember it was only a few years ago, average temperature we saw for a good couple months was probably in the mid 20s. Walking to class for 8am when the sun was rising and it was 12° out in December.

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Xyrus2000 t1_j71hw2h wrote

What I find amusing is that the older generations will tell you how they walked to school uphill both ways in 3 feet of snow, and will just as vehemently deny that the climate isn't destabilizing when there hasn't been three feet of snow since they were kids. :P

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pattyG80 t1_j6yolc6 wrote

Doesn't this image show the coldest temperatures over Canada?

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artaig t1_j6x1kjy wrote

We noticed. The Atlantic current used to break upon us constantly, leaving never-ending rain. Now it tends to keep going North, pushing the cold air towards the Americas.

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WhiskerTwitch t1_j6x6zji wrote

Where is "us" in this scenario?

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drbenevolentnihilist t1_j6xbgic wrote

I’m the artaig circle obviously.

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IveGotDMunchies t1_j6xgfnw wrote

>I’m the artaig circle obviously.

This cleared nothing up.

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drbenevolentnihilist t1_j6xslx9 wrote

Sorry. Meant to make a joke about the above guys name because it’s artaig which sounds like arctic. Also I thought I typed “in”. Not I’m. I’ve had little sleep.

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WhiskerTwitch t1_j6zhujh wrote

Meanwhile I'm wondering what air tags have to do with anything.
Now that I see where you were going with that, I applaud your terrible/awesome joke. Now go sleep, dude.

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myamotoman t1_j6ycji6 wrote

Northern Saskatchewan here -33c this am suns out now and it’s warmed up to -24c

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Selfless- t1_j6yfe6c wrote

Is this a Polar Vortex thing? Is that still going on?

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MadDjinn t1_j6ynokm wrote

No, it’s just called ‘winter in Canada’ but someone thought they’d try to tie it to the US for fake internet points with a shitty see through globe.

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pattyG80 t1_j6yowrp wrote

No shit...this will hit Canada even harder

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MadDjinn t1_j6z5ct9 wrote

It’s not even hitting record lows in those areas of Canada.

So it’s cold, but not something to care about, unless you live there.

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Rfksemperfi t1_j6x08l7 wrote

What does this mean for someone living in NE us?

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Mathew_Barlow OP t1_j6x187n wrote

We're going to have some "old fashioned" cold weather. In the Boston area, likelihood of dangerous wind chills from Friday morning through Saturday afternoon. If you're going to be outside or traveling, check your local NWS forecast (weather.gov) and be prepared.

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Mike2220 t1_j70g6sx wrote

It means the abnormally warm winter we've been having will feel like a normal winter for 2 days and then go back to being abnormally warm again. Really don't think it'll disrupt much

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MayonaiseBaron t1_j6x8h67 wrote

Not much, we've been here before. Consisntant 0⁰ days used to feel like the norm when I was a little kid, now any mention of negative temps feels like a big todo.

Its New England, not Texas. We can handle a bit of a chill.

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Fish_On_again t1_j6xpzii wrote

When were you a little kid? I grew up in the '80s and '90s in upstate NY, and it was always interesting to see if we would actually get a white Christmas, or have enough ice to drive our trucks on the lakes. Then we had those crazy cold winters in the 2000s and 2010s (Even canandaigua Lake froze!), now it seems like we're back to the winter weather of the '90s and late '80s.

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Lohikaarme27 t1_j6xxzjk wrote

Relevant and interesting information on that:

https://en.wikipedia.org/wiki/Golden_Snowball_Award#Snowfall_by_season https://www.localsyr.com/winter-outlook-2020/winters-in-syracuse-are-changing/

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Fish_On_again t1_j6xypql wrote

I'm actually really looking forward to reading those links, I don't have the time to now. I do know that my area just set a record, this is the first January we've ever had with no daytime highs under 30°.

Edit:. Ugh warmer and more snow.

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Fish_On_again t1_j6ygta0 wrote

Thought this was interesting

>The wintertime NAO also exhibits significant multi-decadal variability (Hurrell 1995, Chelliah and Bell 2005). For example, the negative phase of the NAO dominated the circulation from the mid-1950's through the 1978/79 winter. During this approximately 24-year interval, there were four prominent periods of at least three years each in which the negative phase was dominant and the positive phase was notably absent. In fact, during the entire period the positive phase was observed in the seasonal mean only three times, and it never appeared in two consecutive years.

>An abrupt transition to recurring positive phases of the NAO then occurred during the 1979/80 winter, with the atmosphere remaining locked into this mode through the 1994/95 winter season. During this 15-year interval, a substantial negative phase of the pattern appeared only twice, in the winters of 1984/85 and 1985/ 86. However, November 1995 - February 1996 (NDJF 95/96) was characterized by a return to the strong negative phase of the NAO. Halpert and Bell (1997; their section 3.3) recently documented the conditions accompanying this transition to the negative phase of the NAO.

https://www.cpc.ncep.noaa.gov/data/teledoc/nao.shtml

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Lohikaarme27 t1_j6yjpt5 wrote

That link is really interesting. Especially where it says a negative NAO is typically associated with below-average temps in the Eastern US

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Fish_On_again t1_j6ykl39 wrote

Yeah, even though for this cold snap it's quite positive, and our newest warm up next week coincides with the NAO going neutral.

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MayonaiseBaron t1_j6xrc46 wrote

New Hampshire in the 90s/00s. Suprised your lakes don't freeze over every winter, I thought upstate NY was colder than over here. Lake Winnipesaukee freezes over pretty damn solid every year, usually enough to take a bobhouse out.

The lake usually doesn't "ice out" until April, but its been getting earlier every year. Used to work on the Mt Washington as a deck officer and one year we had guys jetskiing in late March.

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Fish_On_again t1_j6xrx4m wrote

Definitely colder for you guys. We get a lot of warm air off the ocean and Lake Ontario.

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Lohikaarme27 t1_j6xy4ku wrote

Our lakes do generally freeze over every winter. Just depends on the lake

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NickkyDC t1_j6xksx7 wrote

Meanwhile it’s still roughly 26-31 degrees Celsius in Florida fml

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averagemaleuser86 t1_j6ya72n wrote

We're only getting like 30* Temps at night in Georgia. Sucks. I want some gosh dang cold weather!

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glowdirt t1_j6yd5xp wrote

Would be better if the globe wasn't see-through.

I was trying to figure out what the lines off the coast of New England were for a bit until I realized it was South America

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ARandomInternetLad t1_j6zbtej wrote

Holy shit Arizona might actually be cold enough to wear long sleeves in, this is not a drill!

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Acrobatic-Bed-7382 t1_j70novr wrote

Does that mean it's going to get even more winter weather after what we've already had (down here in Arkansas)?

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Important_Sound5151 t1_j710y5u wrote

The report states that elevation was not taken in consideration because the observation, measurement, and data collected were form surface temperature. If anyone needs to know the effect of elevation on temperature, Further studies are needed. One’s hypothetical argument must be validated through rigorous studies to for scientific facts.

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Xpressionofinterest t1_j6zollj wrote

So lemme guess, this is well below the altitude of the low orbiting 5g satelites..... ? Not trying to theorise just simply asking for a friend #DrDavidKieth geoengineering scientist

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Mike2220 t1_j70gmto wrote

This altitude is significantly lower than even the height commercial airliners fly at.. less than ⅕ that height actually.

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