Major NOWCAST data -- you should read

[Guest]

The r/s threat is Now over for NYC and it will b chnagng back to in south philly soon...

For the past 48-60 hrs -- even longer on the ECMWF they have been showing that BETWEEN systems North windw would end any warming at 925 mb or 850 level and hold the r/ s line JUST s of NYC and LI.

at 11am the cold air advection (CAA) is NOW occurring

DEW POINT at POU was 18 at 7am --- is 14 North wind down the valley into NJ and NYC
ABE dew point is 24 and falling
famingdale LI Td was 27 at 7 am now its 24 at 11am
ISP 27 TD at 7 am 21 at 11am

this has been extremely well forecasted by the Models last 48-60 hrs... CAA beteween the 2 systesm

[Heady Guy]

Still holding with your totals for PHL ? Iknow it is a weenie question.

[d]

it's a race against time now for coastal NJ to see if we can get that line down where this started out as all rain from the onset. hopefully down through Ocean county by tonight (crossing my fingers)

[wxid]

DT, will you do a last call, or is your last still holding? You seem to be right on.

[Anonymous]

at 11:40 here in Cumberland County, NJ I have 34.2 deg with mod. Rain..Snow started here at 1:10 AM. I had 3.2" before changing to Rain at 9AM...I think my temp has already maxed out at 35.1 deg..on the way back down!

[Snow Plow]

The r/s threat is Now over for NYC and it will b chnagng back to in south philly soon...

For the past 48-60 hrs -- even longer on the ECMWF they have been showing that BETWEEN systems North windw would end any warming at 925 mb or 850 level and hold the r/ s line JUST s of NYC and LI.

at 11am the cold air advection (CAA) is NOW occurring

DEW POINT at POU was 18 at 7am --- is 14 North wind down the valley into NJ and NYC
ABE dew point is 24 and falling
famingdale LI Td was 27 at 7 am now its 24 at 11am
ISP 27 TD at 7 am 21 at 11am

this has been extremely well forecasted by the Models last 48-60 hrs... CAA beteween the 2 systesm

Great post DT

I have been watching the line move S for a while now and just got the time to play around on the ACCUPRO site pulling down the OBS charts and timeline data. You can clearly see the trend using it.

Rain is now mixed with snow here.

[li-mike]

I think Upton is in for a big upset here with their 3 Inch Call for LI. As of 1030am the Rain SNow line is pushing south and the temp has dropped to 29 Degrees with Moderate Fluffy snow falling. South Shore already has 1 inch and the north shore is getting in on the action also with about 1/4 of an inch sticking to everything. I really see a bust with their call for sleet and rain into the early evening hours. That Rn/SN line will not be able to make it back up with the snow cover except maybe on the south fork of LI. Am I missing something or is this a bust? I am updating my calls from 6 inches from this storm to 8-12 based on this nowcast and the wind profiles being dominated by a stronger than forecast High Pressure system. We should have know this when the precip had a harder time coming into the region than earlier forecasts indicated. I am interested in your thoughts as there is a lot of knowledge out there. As an aside the temp is at 26 at my home a little further north and east of my work in the pine barrens. gonna get ugly.

[Guest]

yeaH OKX gonna blow another one

I think Upton is in for a big upset here with their 3 Inch Call for LI. As of 1030am the Rain SNow line is pushing south and the temp has dropped to 29 Degrees with Moderate Fluffy snow falling. South Shore already has 1 inch and the north shore is getting in on the action also with about 1/4 of an inch sticking to everything. I really see a bust with their call for sleet and rain into the early evening hours. That Rn/SN line will not be able to make it back up with the snow cover except maybe on the south fork of LI. Am I missing something or is this a bust? I am updating my calls from 6 inches from this storm to 8-12 based on this nowcast and the wind profiles being dominated by a stronger than forecast High Pressure system. We should have know this when the precip had a harder time coming into the region than earlier forecasts indicated. I am interested in your thoughts as there is a lot of knowledge out there. As an aside the temp is at 26 at my home a little further north and east of my work in the pine barrens. gonna get ugly.

[mdguy25]

Just changed to sleet and drizzle here in baltimore i'd say around 8 or 9 not positive got a good 4 or 5 inches over night mainly from burst between 3 and 6 in the morning.. How much more from second impulse do u think DT?

[BillyJoe McCallister]

About 4 inches in central Bucks County, 20 miles northwest of Philly. MOderate snow now, TEmp 30, dew point 29

[TheWeatherZone]

Here in camden county NJ, its been snowing since early this morning. We had a brief changeover to rain/sleet but we went back to snow. I can't access any radar graphics here at school, anyone have an idea where the rain/snow line is and if its headed north or has it retreated south. BIG BUST if the line is headed south since everything is snoecovered here and they were going for a change to rain.

Mike~

[Heady Guy]

5 inches here in bensalem bucks county