Weeks of cold and opportunities for snow

AccuWeather

In today's Forecast Feed, AccuWeather's Bernie Rayno monitors the risk of cold air and snow showers in the United States in the coming weeks.

Transcript

00:00is locked in over the next couple of weeks in fact at least through the 15th of this month it

00:14looks like the cold is going to be somewhat persistent from the lakes toward the Northeast

00:19now with that once you get the cold you're going to have opportunities for snow of course this

00:25what's occurring today and in the Tuesday was the opportunity that we talked about last week let me

00:31take you out to the water vapor loop here and you can kind of see what's going on you've got this

00:36boundary in here right let me turn on my pen right in here the boundary is in here now you'll notice

00:43you've got this piece of energy here this is going to be running to the East Southeast what's it going

00:49to do it's going to form a storm on this boundary that comes up the eastern seaboard and then again

00:54we have enough cold air in place for accumulating snow I want to show you what it looks like on the

01:00on the jet stream here really quick and and because the reason I want to show you this setup we may

01:10have another setup very similar to this one as we get in the Friday and Saturday so I want to take

01:17you there this is what we're looking at and again you're looking at this piece of energy this is

01:22across the Rockies here's your digging northern piece here's the southern piece now for this storm

01:27to happen this piece has to round the bend get out ahead of this northern piece if it doesn't do that

01:34then all we have is a frontal passage in no storm but when you look at the look what happens it's yeah

01:41it's getting out ahead of it you see it you have the northern piece here here's the southern piece

01:46it rounded the bend it gets just out ahead of it just enough that you get to storm the form and then

01:53this is what it looks like on the surface map there it goes right up the coast now most of it is offshore

02:01but we have enough precipitation for the accumulating snow this is what it's going to look like and then

02:07I'll we'll get to the next storm here but I want to show you this really quick here here's what we're

02:13looking at here uh as far as the snow is concerned general one to three in this blue that includes

02:19Chicago Indy St. Louis Cody into an inch or two Harrisburg Redding Allentown one to three inches

02:26one in one to three inches in Pittsburgh Altoona State College and then once you get up into here

02:31uh northeastern Pennsylvania around Hazleton Scranton uh just west of Boston about three inches of snow

02:38tell you what New York City is a close call I don't think you're going to get accumulating snow but

02:42I think there will be flakes at the onset and in Boston you're kind of in the cold air enough

02:47that you can get some front end snow Tuesday afternoon and then it may end as a period of snow

02:53I have a slushy coating maybe an inch in Boston but more the more of the um significant snow across

03:02interior sections of the northeast as we get into Tuesday and Tuesday night so this storm

03:08kind of did play along exactly as we thought it might here now I want to show you this I was talking

03:15about how the cold air is going to be locked in here over the next couple of days let me show you

03:20the upper air pattern and you can see what I'm talking about so we've got this northwest flow

03:25right here see this this is tomorrow Thursday another system coming through what happens northwest

03:33flows so the cold air stays locked in let's go to uh let's go to the week uh Friday another piece

03:39of energy and this is the one we got to watch for for the possibility of another snow event from the

03:44Appalachians toward the northeast doesn't look right now but I could see it but what this does is comes

03:50through guess what more cold air as we get in the Saturday then we get in the Sunday you see this

03:56northwest flow follow the lines where's the cold air coming from coming from the northwest

04:00territories north central Canada right into the lakes and the northeast so it stays cold that's

04:05the seventh let's go to Tuesday what do you see northwest flow this is December 9th let's go to

04:12Friday the end of next week almost well about 13 10 days from now another system coming through this

04:19will bring some colder air in behind it it's not until you get to the about the 15th you finally

04:25see a different pattern this dip in the jet stream coming into the west if this is right this would

04:32be the last dip of energy coming into the east there'd be another shot of cold through the 15th

04:3716th and 17th and then it would start to warm up as we get closer to Christmas for the eastern U.S.

04:43now I'm not saying that's right but at least what I'm looking at now at least for the next 10 to 14 days

04:50we're in the cold air in the lakes and that means you have opportunities for snow now we have the snow

04:56event I just told you now I wanted I want to get to the next event here and this is going to be

05:01over the weekend and let me we play the same kind of weather pattern same kind of weather pattern that

05:07we're seeing right now all right let me show it to you as we get into Friday look what's happening

05:13you've got uh this little piece of energy Friday morning you've got this here and you've got this here

05:20this is another cold front coming southeast I'll show you the surface map so what's happening is

05:25once again and I'll show you this weather pattern you look at what's going on in the United States

05:30you have a frontal boundary stalled out looks very similar to this the the question is can you get any

05:37energy diving to the southeast that can form a storm along this boundary and guide it up the coast

05:43right now the pattern's not quite right for that on Friday and here's why when you look at this energy

05:48you've got this in here in order for this to hit in order for a storm to form along this boundary

05:54this piece of energy has to get out ahead of this digging front digging shortwave right here

06:01there it is Friday you see right here Saturday you see it's not quite with it because here's your

06:08northern piece your energy's back in here in order for this storm to form this has to run out ahead of

06:15it now that means either this northern piece is slower or the southern piece is faster but in

06:21order to get a storm to form you need this energy to run out ahead of this front this digging shortwave

06:27and then if you do then you get the storm right now they're almost at the same longitude so when you

06:33look at the surface map what do you see yeah you have a storm here it goes off the Carolina coast

06:39but it's driven out to sea and it's not in the cold air it's a close call though let's watch this area

06:48as we get into the weekend from the Appalachians to interior sections of the northeast not the I-95

06:56corridor though but that's your threat for snow

06:59you

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