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Wind chill on Mt. Washington NH minus 108, temp -46, wind 98 gusting 107 (mountwashington.org)
35 points by wrycoder on Feb 4, 2023 | hide | past | favorite | 39 comments


-46 f (-43.4c) actual temperature. The rest is just the fact that it's a windy mountain and wind chill values wind speed.

If you were also curious, the lowest actual recorded temperature without windchill was -128 (https://wmo.asu.edu/content/world-lowest-temperature), so this temperature is about 80 degrees higher than that.


> If you were also curious, the lowest actual recorded temperature without windchill was -128 (https://wmo.asu.edu/content/world-lowest-temperature), so this temperature is about 80 degrees higher than that.

For anyone reading, that isn't a Mt. Washington temperature - just world lowest record.

According to wikipedia Mt. Washington's record low for Jan/Feb is -47/-46F, respectively. So tonight's -46F is on par for the Feb record low @ Mt. Washington.



This particular mountain is notoriously windy, though - it has the highest recorded wind speed not associated with a tornado or cyclone.

https://en.wikipedia.org/wiki/Mount_Washington


Whew! Having since left the north east for bigger mountains, there is still a special place for the 6288' mountain with The Most Extreme Weather. :)


Where did you go?


Seattle. Climbing, mtb, skiing, volcanos, ocean, it's got everything! And all in half the time it took to get from Boston to the white mountains.


Oh wow, that sounds perfect for me. I’m looking for a new job right now.


It really is a place where you can drive 45 minutes away from the city and be in the "sticks". Come check it out.


I'll have to! Are there any tech communities you'd recommend checking out so I can network with people in the area? Are there synth/creative tech groups?


I woke up at 4am, and it was -61F in northern Maine with the windchill. I'm tempted to take my garbage out in a t-shirt and see what happens :)


I woke up at 4am realizing I missed the whole 'put wood in the woodstove' moment around midnight in midcoast area. 45 in the kitchen, heatpump cranked.

We had -38f with wind-chill, -18f actual it seems like.

Builds character, right fellow mainer?


I've had the pellet stove running all night. Baseboard heaters can't keep up. Suited up like it was the Arctic, to feed pigs and chickens. The pigs have been locked in their shed for two days with a radiant heater. The chickens won't eat in the coop, which also has a heater. I'm hoping no one dies.

I pulled two eggs out of the coop last night and they cracked as soon as they hit the cold air. Wild stuff. -12F when I woke up with a wind chill putting it at "feels like -35F."

Looking forward to the nearly 50F tomorrow.

(Southeast NH)


My chickens also made it, boarded up and huddle mode. Have 2 (had 3, one got hawked I think) ducks that tend to go to a different coup, but they were lugged into the heat pumped workshop in a cat carrier for the night and likely until tomorrow am. Not much heat generated with only 2 of em, though they do have a light.

Funny about the eggs, we had a few days before eggs, and they made a divot in the ice on the ground without breaking, at all.

Hope your animals turned out okay! 38 ish maybe tomorrow -- maybe busting the Miata out!


Ouch, hope your pipes are fine!


Left a tap barely running and have the furnace on fan only mode dumping some lackluster upstairs heat into the basement. 170 year old house, knock on wood, no explosions yet!

(Naturally I've been gung go about the whole no oil since last March!) -- life test? Probably should put some in tank for moments like these, but we don't ever seem to take the easy way out.

Didn't bother try to start a car yet, no need, another days worry! (And thank you!)


Here's a tweet with some pretty cool footage from the cameras on Mt. Washington yesterday.

https://twitter.com/forecaster25/status/1621598650022363142


Yes, it is winter here. Not quite as cold as back towards the tail end of global cooling in the 90s when we'd rock -40c down in the valleys.

Now Residents of Boston from back around 2003-2005 will remember that one winter when we had -36 in that city for like a week.


> Now Residents of Boston from back around 2003-2005 will remember that one winter when we had -36 in that city for like a week.

I don’t remember it being quite that cold in the city. But I clearly remember -40 with wind chill in central MA. Good times.


It got down to -60 and change with windchill. The Atlantic winds were absolutely brutal.


-40C is also -40F, so -46 in whichever is colder.


Anybody here had experience dealing with that kind of cold? I'm curious how people deal with with. Is that something that good equipment can protect against or is it just too cold?


I lived in the Yukon for 4 years, rode my bike to work every day of the year, it was often past -40C/F in winter. With good clothing that was perfectly fine, and I enjoyed it. Watching the steam and huge chunks of ice on the Yukon river is a sight to behold. Also seeing the northern lights on the way to work at 8am is great, as-is seeing the lights or stars again at 4pm.

With far from the best gear I can stand around outside happily down to about -30C. Past that, I need to be near a fire, or moving (snowshoeing, riding, cutting wood) to stay warm to about -40C/F. After that I have to really move to stay warm enough for a long period of time. Once I was caribou hunting just below the Arctic Circle in late November (the sun only came up for about an hour) and it was something like -50C (-58F). Try as I might, I never did warm up even jogging on the spot, jumping jacks, etc. etc.

In the north most people don't even really consider will chill, because it's kind of meaningless - it officially has no units and is an estimate at best. Northerns take pride in being "tough" and most people say stuff like "Wild Chill is for people who get cold", or something similar.

So there were many days the actual temp was -46C (-50F), and if the wind was coming from the North it was stupid cold. The will chill would have been well past -60C (-76F), but nobody talks about it. On those days it's very hard to be outside for long, and exposed skin is an absolute no-no. If I took my two layers of gloves off to do anything I'd lose feeling in my fingers for hours and they really, really hurt.

Interestingly, the temperature between night and day only changes a degree or two - the sun makes virtually no difference, even though the colder it gets the clearer it gets. I grew up in Australia, yet the most stunning blue sky days of my life were in the Yukon past -40C/F.

I lived not too far from Snag, Yukon, the coldest ever recorded place in North America at -63C/-81F [1]

I should also add that Yukon has no concept of "too cold for school" or work, or anything like that. It's perfectly normal to go to school or work when it's below -40C/F, everyone just deals with it. It's amusing when it warms up to -20C or -30C and it feels comparatively balmy!

[1] https://www.gi.alaska.edu/alaska-science-forum/coldest-place...


I spend hours outside at -10F skiing… it’s usually some of the best conditions (partly because nobody is there). I’m not just warm, but pretty much as comfortable as being inside.

I was also out last night in -20F taking the dog out before bed, I’ve got a full-body arctic suit for such occasions (and he does too).

Good cold weather gear is pricey, but it makes all the difference. It lasts for a long time, so it’s a good investment if you have to deal with these temps during the year.


I saw the mercury drop from -25C to -35C on the bus from Changchun to Haerbin once (the buses, for some reason, had digital outside temperature thermometers up front). I was dressed for it well enough, but I didn’t keep my phone or camera warm enough, so I didn’t get many pictures of the ice sculptures I went to see. Too far south for northern lights though, weird it would get that cold at that latitude.


Northeast Asia has perfect conditions for terrible winters. Continental climate (so it gets extremely cold), the prevailing winds don't bring in moisture, and the Siberian anticyclone just adds to the frigid ambiance.


Why would a phone or camera need to be warm?


Lithium batteries have really really bad performance in cold weather(not even talking -40, like 32 degrees for 10 minutes out and your phone will absolutely shrivel)


In the coldest days of NYC winters my Nexus 6p would reboot if I tried to use the camera. In cold conditions lithium batteries have difficulty keeping voltage steady when there's a sudden amperage spike from turning on the camera hardware. If it gets even colder just turning on the screen can cause the voltage to drop enough that the phone will malfunction.


Batteries aren't designed for such low temperatures.


I thought one of the advantages of lithium cells over other chemistries was cold temperature performance.


frozen lenses


No experience, but this story of the “Maine hermit” who lived in a tent in central Maine for decades is still amazing to me.

https://www.gq.com/story/the-last-true-hermit/


There is a book about it as well, from now maybe a few years back. Goes Into far more details, and quite a nice read.

https://www.goodreads.com/book/show/30687200-the-stranger-in...



Wow thank you for sharing! This is incredible!


I’d run across a courtyard in a tshirt when it was -40 for fun. Invigorating :)

Yes, managing being outside in the -40s is doable with above average equipment but nothing crazy. Good insulation isn’t all that hard. I have a coat that I have to have unzipped at 0F because I get hot.

100 mph winds on the side of a mountain is a challenge at any temperature.

When is that cold you just have to be careful or a mistake can lead to permanent damage in seconds or minutes, the cold will kill you easily and you’re just very aware of it when you’re out in it. Surviving isn’t hard but deadly mistakes are also easy.

It also has a lot to do with attitude. If you think it’s the worst suffering it will be.

You’ll want insulated boots, thick wool socks, insulated pants, a parka, layers under the parka, gloves with mittens over, face covering, hat.

Keeping your face, head, and feet warm are the most important. Next is much torso insulation.


Not a ton, but I've done it. The basic approach: wool, wool, thinsulate if you're fancy, more wool, in layers. Something that effectively blocks the wind on top. No cotton. Good boots and gloves. Make sure you've got no exposed skin.


will this create more ice caps or less? Also were the ice caps always ice? Pretty sure they weren’t.




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