This is a new one for me. These icicles have been there for a few days. Standard clear smooth icicles. Over night they got fuzzy. Temps have been in single digits for a couple days, last night we went to the negative teens.
Frost on ice?
- Thread starter Dan in MI
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I think that could be considered "Hoarfrost". I've seen trees and bushes covered with a Hoarfrost but don't recall seeing it on icicles. Do you have a clothes dryer vent in the vicinity, to create moisture?
bigbillyboy
Hunter
Never saw that before , kind of neat really .........
nekvermont,
Thanks for putting a name to this weather event. When I was working a winter on Sakhalin Island Russia, we had this appear one day. It is the first time I had ever seen it, and it was absolutely beautiful. I grew up in Ohio worked in Canada and other cold places, but this was a first.
Pictures from the internet
Thanks for putting a name to this weather event. When I was working a winter on Sakhalin Island Russia, we had this appear one day. It is the first time I had ever seen it, and it was absolutely beautiful. I grew up in Ohio worked in Canada and other cold places, but this was a first.
Pictures from the internet
OP
Hoarfrost is beautiful. Doesn’t happen a lot or stay around long.
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coachk64
Single-Sixer
If your grandpa said it, it wasn't a theory, and no need to test it. Just believe it. (Speaking as a grandpa myself).
Hadn’t heard that term in a few years. It was in our SOP that it was acceptable to have thin hoarfrost on the fuselage and launch with it. We could also have some on the cold soaked fuel tanks but not on the leading edges or control surfaces. Would usually form from high humidity and a cold surface.
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That is really weird. Have you guys ever seen frost push itself out of the ground and lift rocks and twigs?
GasGuzzler
Hawkeye
How about the exploding trees?
OP
They’re not quite as advertised...
The water/sap does freeze and break through the bark, but far from explosively. They do however make a loud crack resembling a .22. I heard it years ago in similar conditions.
The water/sap does freeze and break through the bark, but far from explosively. They do however make a loud crack resembling a .22. I heard it years ago in similar conditions.
bigbillyboy
Hunter
Now that I have seen .
I've seen that in the high desert. After a good rain when the washes dry out if you get really cold nights the frost just seems to grow out of the sand. Forms a solid crust and as you walk it squeaks as you break through. Listened to what turned out to be a coyote working his way up a wash one night. In the morning you could see his tracks and the ground all around was still frozen.
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The ones I saw looked like they exploded, but it was caused by wind after they were frozen. The frozen trees didn’t have any flexibility and shattered in high winds.
Thats why desert caliche is hollow beneath the crust, but, yes, it will happen in the woods too, i have seen it from oregon to colorado. Havent got out of the truck into the woods east of there
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That’s more of a frost heave. Where a whole section is forced up, Very common.
I meant when ice pushes up in a spike sometimes lifting a pebble.
I guess Its called needle ice?
I meant when ice pushes up in a spike sometimes lifting a pebble.
I guess Its called needle ice?
Yep, seen some-o'-that.
