Winter Thread 2017-18 (Northern Hemisphere) (snowy, ice, record, temperature)

[Cambium]

Originally Posted by ral31

TWC showing some deep South snow for New Year' s Eve night!

Gonna catch up on that storm now.. Last I checked wasn't anything exciting anymore but still concerned about ice in the south.. Give me a few

[nei]

https://twitter.com/growingwisdom/st...57047982501894

[Shalop]

ISP had a max of 13F back on Feb 14th, 2016. I think that was the third coldest ever.

The afternoon high was 11F at ISP on Jan 6th, 2014, but it was ruined by the midnight temp which was much higher.

Coldest max ever at ISP was 6F on Jan 21st, 1985 I believe.

[chicagogeorge]

https://twitter.com/judah47/status/945665043781312512

[Cambium]

Originally Posted by Shalop

ISP had a max of 13F back on Feb 14th, 2016. I think that was the third coldest ever.

The afternoon high was 11F at ISP on Jan 6th, 2014, but it was ruined by the midnight temp which was much higher.

Coldest max ever at ISP was 6F on Jan 21st, 1985 I believe.

From NWS NY. They are going with the Euro!

National Weather Service New York NY
1003 PM EST Mon Dec 25 2017

NWP is in good agreement with the H5 flow until about Thu with a
nearly zonal flow aloft. Main story through the end of the week
will be the frigid temps as a strong 1040 mb Canadian high and
its associated Arctic air mass builds toward the area. Thu
currently looks to be the coldest day of the week with highs in
the teens to lower 20s with teens and single digits Wed night,
possibly Thu night as well if the EC soln pans out. This is
around 20 degrees below normal for this time of year. Have
leaned toward the colder EC guidance Wed-Thu since Arctic
outbreaks typically are not handled well. Otherwise it is
expected to be dry, just cold.

Euro Temps and Precip forecast for Islip.. Has a Storm get close and brings warm air on Saturday but wow at the temps next 10 days.





Forecast for Hartford from the Euro. WTF? Those are max temps, not lows.


If 0.7" liquid fell in cold air like this, it will be mountain type snows and high ratios. 3/4" liquid would yield over 12" of snow.

[muslim12]

A low of -17? What?

[nei]

Originally Posted by muslim12

A low of -17? What?

I don't trust that yet; forecasts aren't. I'd guess other models aren't showing it.

A high of 5°F is just as crazy for Connecticut. Why are the diurnal ranges so low? With dry, arctic air the diurnal ranges are usually 25°F+ , that's what we got in Feb 2015. Lower sun angle?

[ral31]

Accuweather calls for 6F for the low New Year's Day night, lol. Though the latest run of the GFS is showing 14F on the morning of Jan 2 here.

[Cambium]

Originally Posted by nei

I don't trust that yet; forecasts aren't. I'd guess other models aren't showing it.

A high of 5°F is just as crazy for Connecticut. Why are the diurnal ranges so low? With dry, arctic air the diurnal ranges are usually 25°F+ , that's what we got in Feb 2015. Lower sun angle?

Just imagine what a fresh arctic type snowpack will do. I also doubt that -17F though.


I'll have to start looking into some stats... Will post them in the Arctic Thread when I do.

[nei]

Originally Posted by Cambium

Just imagine what a fresh arctic type snowpack will do. I also doubt that -17F though.


I'll have to start looking into some stats... Will post them in the Arctic Thread when I do.

By average daily max, the upcoming week should have the coldest afternoon highs in several decades for Amherst. Previous coldest I've found was 19.4°F in mid January 2004. But by daily means, a week in Feb 2015 is probably colder; the mins aren't that extreme.