dendrite

Yeah I forgot to put mine out after melting down the inch of snow the other day. I got it out there at 1230am after it had already started pouring. It hasn’t budged from 32.3-32.4 here for over an hour. The gutters froze up so I have water pouring over them and water getting into parts of the basement. Hopefully we can get into the upper 30s for a bit so the driveway can melt out otherwise it’ll be unwalkable for awhile.

So latent heating works both ways. Everything trying to melt now is acting to help cool the air. I always think of it as like a conservation of thermal energy. The ice is trying to go to a higher energy state now (solid to liquid) so it needs to gain heat for the phase change…hence it’s “taking” it from the air around it. That’s why we tend to rot at 32° so often or frequently see isothermal 0°C layers aloft. So even though the diabatic heating quickly warmed us up to 32°, the melting now is trying to help us stay there. So we’ll see how long the wedge can hold now before the cold fropa blows through later.

I expected worse there

Even near 32° it’s essentially done without the dp drain. The driveway is a skating rink and the birches are nearing the ground, there’s not much radial ice. Wintry scene though.

Beer? There’s a few people maybe at 1500’ with a little more accretion, but most are sitting at the 32° ice water bath.

00z HRRR had 29° at MHT at 7am.

Meh

Definitely some sag to the pines and birches, but it’s a run of the mill icing event. I’m actually surprised how early the accretion shut off even way up into NNE. We’re still in a drought so hopefully it keeps pouring.

This is going to end up being a major nothingburger. WTTTE

Already 32°

29.5° Driveway is icy, but a lot of standing water too.

29.3° -ZR

We still usually run moist lapse rates under the inversion. The 1k hills are almost always colder in icing setups.

I think you will get some decent icing. 1k way up there will give you an advantage over most of the population in NH. I could see you pulling 1/3” radial.

It’s a 3hr burst of +ZR which will limit accretion. After 12z everyone starts rotting AOA 32°. I don’t care what a weenie algorithm of “fzra qpf” shows.

Overblown. Cope.

We deal with the overblown icing products every icing event. There will probably be spotty outages in the hill towns and here-north, but I’d be surprised at anything widespread. A half inch of accretion is a lot of ice. Heck this is only 5/16” radial.

A lot of beer

lol…that’s like 70% of the euro qpf in the Merrimack Valley. We’re not getting a half inch of accretion

They bit on the HREF icing. I’m still taking the under.

The joke is on you. This is what he sees when he posts.

“Canadian model leading the way” GL with that

The easy web version is here https://weatherstar.netbymatt.com

Even 32° here with full sun. Nice afternoon.