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PHL JAN 20/21 Obs and Discussion Thread


tombo82685

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The HRRR from 2 hours ago is already busting too far north with the position of the low comparing it to the 21z SPC mesoanalysis.

The problem isn't so much now, but when the 500mb trough turns negative and the low begins to develop over C PA in response. I'm not the most meteorologically savvy, but I don't see why the HRRR/RR/RUC depictions can't/wont' happen.

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both rr and hrrr coming in cooler for philly..both near 2-3" when before they were showing 1" or less

MT. Holly AFD

"WE ARE FAVORING THE MILDER BOUNDARY LAYER TYPE

AIRMASS THAT THE MODELS ARE SHOWING MAINLY ACROSS THE FAR

SOUTH/SOUTHEASTERN AREAS ESPECIALLY GIVEN THE ONGOING THERMAL TRENDS."

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Well it's 34.7 here in Cape May and the wet bulb is below freezing. So we will see what happenes. We are down 2 degrees in the past 90 minutes. I am a little surprised at the zero accumulation forecast by nws. We are down to just old snow piles and drifts, so no big deal anyway. Not looking forward to my drive to NYC tomorrow. At least I don't leave until the afternoon. Think the roads will be okay?

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Well it's 34.7 here in Cape May and the wet bulb is below freezing. So we will see what happenes. We are down 2 degrees in the past 90 minutes. I am a little surprised at the zero accumulation forecast by nws. We are down to just old snow piles and drifts, so no big deal anyway. Not looking forward to my drive to NYC tomorrow. At least I don't leave until the afternoon. Think the roads will be okay?

If they take care of the parkway as well as the turnpike, then it should be fine. But I've never seen the parkway in a snowstorm.

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I think Mt. Holly has the right idea with around 3 inches for philly. I do think this will depend on elevation in the philly area and those with above 400 ft elevation have a shot at more.

Lets just say that I am perfectly fine with 3 inches, might be just enough to get my wife a 2 hour delay at her work, and allow me to get this all cleared up off the sidewalk and driveway and then be on my merry way to work.

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If they take care of the parkway as well as the turnpike, then it should be fine. But I've never seen the parkway in a snowstorm.

It's not good, when AC had that 6-7 inch snowfall two saturdays ago, I was stuck driving from belmar to AC on the parkway, and there were NO trucks out, it was 20 mph white knuckling all the way from new gretna to Atlantic City! In tire tracks and watching cars literally slide off all around me.

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It wasn't two weeks ago. It sucked. Plain and simple.166435_673359914232_6114193_38225928_6872752_n.jpg

That's a bummer. The wife, kid and I drove almost the whole length of it from mile 142 to 0 (Cape May) Boxing Day 2010 and things were all in all good. We did leave before the height of the snow, however. I think that Sat snow you mentioned caught many by surprise. ( Not to make excuses for the Pky)

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