Winter Thread 2017-18 (Northern Hemisphere) (drought, Portland, climate, snow)

[chicagogeorge]

https://twitter.com/Met_khinz/status/938357254239260674


https://twitter.com/Chigeorge72/stat...57116787716098

Jet stream to keep cold air in place here over coming 2 weeks | WGN-TV

[FirebirdCamaro1220]

Today's forecast high is 22.2°C, 1.6°C above average

Currently 11.7°C with a dewpoint of 7.8°C at 3am Mountain Time

[chicagogeorge]

First snow of the season?


https://twitter.com/WGNWeatherGuy/st...62347223158784

[LKJ1988]

A heavy and humid 64 this morning. Some fall.

[Cambium]

Originally Posted by chicagogeorge

First snow of the season?


https://twitter.com/WGNWeatherGuy/st...158784/photo/1

So you haven't gotten any either? I'm still waiting for my 1st flakes!


I got 0.55" of rain from this front. Would of been 4-6" if was all snow.


2-6am loop.


Looks like some flurries for the Virginia mountains this morning

Buffalo just got hit with a heavy Lake Erie Squall.

[Cambium]

Originally Posted by cjoseph

I will keep updates for sure!!! I live in far southern erie county, and I have to commute right into the southern suburbs Wednesday, Thursday, and Friday. I have driven through absolutely horrifying weather, so this should not be too awful...

Stay safe. Keep us posted how it is.

Originally Posted by BullochResident

NAM has always done this. This is the same model that predicted 8 inches of snow back in January 2014 when in reality ended up being just a light freezing rain/sleet mix.

Yeah, NAM likes to over amplify things and have a wet bias. But .. I lost track how many times it was right. Including some recent big snow event totals.. Including the rain 4 weeks ago. Was the only one to show more and was right. So sometimes it does score some points.

Originally Posted by srfoskey

The forecast high for Thursday got lowered into the 30s. Interesting (it was 50F just a couple days ago).

No surprise there. Start high, come down. Put rain change to snow. That's forecasters motto. Scared to start with cold and snow and change to warmer and rain. lol

Originally Posted by ral31

Snow missed Alexandria to the south on December 11, 2008. 6 inches of snow were recorded at two locations in south LA! I think there were some flakes in Alexandria, but I was up in north LA at that time.

Significant Weather Events

Whoa. Even Thunder Snow! It sucks when snow misses to the south here, I'd hate to be there and it misses. lol Thanks for the link. Good stuff.

Here's the Upper Height Jet stream pattern that day. Huge Dip over the U.S and a nice Upper Low right over you! Those are awesome. One of my favorite features.


Not every time the Jet stream dips a cold ball of air closes off like this so that's why it was a rare event.

Meanwhile I got record rains here 3"+ for that event. Too much southerly flow on the right side. Snow down there, none here.







Check out the radar loop from that storm.

wxloop radar_us_archive start 2008121012 end 2008121212 interval

[Shalop]

Pretty happy about the pattern change.

Maybe some flurries possible over next 10 days, but I don't see any serious snow possibilities yet.

I can't remember the last time we got a heavy snow in December in the tri-state area.

Probably more than 5 yrs, no?

[Cambium]

Rain is done. Front is here. Temps are dropping since 3am.


3 Images...


Current temps 12z.





Yesterdays Min Temps December 5, 2017





Yesterdays Max Temps December 5, 2017







Source:

[Cambium]

Originally Posted by Shalop

Pretty happy about the pattern change.

Maybe some flurries possible over next 10 days, but I don't see any serious snow possibilities yet.

I can't remember the last time we got a heavy snow in December in the tri-state area.

Probably more than 5 yrs, no?

Dec 14, 2013 NYC got 5"


Dec 26-27, 2010 NYC got 20" (One of my most memorable blizzards)


That's pretty much last time. Decembers have been opposite of usual recent years so this year will be nice for a change.


Last time we had a below normal December with above normal snowfall was 2010.

[Cambium]

Cold pattern likely to linger into January. Then we'll probably get early heat waves starting in February. LOL

FFL! Finally Front Loaded

https://twitter.com/judah47/status/938069992569962496