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The Below Zero club


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They are hiding: BTW Nick Stefano texted me, -18F in Walpack in Sussex County NJ.

-5.2 coldest it's ever been at my time in gilly

You and I are like:  

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Very unlikely and difficult in the relatively higher spots in this area....We usually need strong cold air advection and never get any benefit of radiational cooling. To highlight here in NW Chester County at 650 ft ASL we have only experienced 3 days with a below zero readings in the last 23 years since 1996. Below are the only 3 days we have touched below zero.

1/24/11 - (1-2)

1/7/14  - (1.6)

1/22/14 - (1.0)

That said at 10:18 pm local we are already down to 2.6 above zero with a DP of 8.6 below zero - with an almost 4" snow cover so it is certainly possible but I would not be surprised if we stay just barely above zero by tomorrow AM - I will call the low at 0.2 above

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10 minutes ago, chescopawxman said:

Very unlikely and difficult in the relatively higher spots in this area....We usually need strong cold air advection and never get any benefit of radiational cooling. To highlight here in NW Chester County at 650 ft ASL we have only experienced 3 days with a below zero readings in the last 23 years since 1996. Below are the only 3 days we have touched below zero.

1/24/11 - (1-2)

1/7/14  - (1.6)

1/22/14 - (1.0)

That said at 10:18 pm local we are already down to 2.6 above zero with a DP of 8.6 below zero - with an almost 4" snow cover so it is certainly possible but I would not be surprised if we stay just barely above zero by tomorrow AM - I will call the low at 0.2 above

With ~9 hours of cooling to go I gotta believe you’ll make it easily!!

I’m at  3.4° currently in Buckingham PA @ 410’ and thinking I’ll dip to -1°!

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15 minutes ago, chescopawxman said:

Very unlikely and difficult in the relatively higher spots in this area....We usually need strong cold air advection and never get any benefit of radiational cooling. To highlight here in NW Chester County at 650 ft ASL we have only experienced 3 days with a below zero readings in the last 23 years since 1996. Below are the only 3 days we have touched below zero.

1/24/11 - (1-2)

1/7/14  - (1.6)

1/22/14 - (1.0)

That said at 10:18 pm local we are already down to 2.6 above zero with a DP of 8.6 below zero - with an almost 4" snow cover so it is certainly possible but I would not be surprised if we stay just barely above zero by tomorrow AM - I will call the low at 0.2 above

Well this is as strong of CAA we'll see this season so good luck! 2.7 here

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