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2/19-20 Winter Storm Observations


nj2va
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Just did a fun measurement with the kitchen scale - put out a large plate and measured 52 grams in 15 minutes. Dividing by the area of the plate gives a mass change of 0.34 g/hr/cm^2 which is 3.4 mm/hr, close to what some of the mesos were predicting in the narrow bands. Fun stuff. 

 

eta: Just measured 2" on the ground here in Wheaton. Pretty impressive consdiering first flakes were a little more than a hour ago. My bar of 3" looks like it will easily be met.

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to all of my fellow snow weenies in Towson  Whitemarsh and Parkville, hang in there! Snow is coming. I know you guys are prob shitting bricks up there without any precip yet. It’s coming! I do however fear they may only get 3-4” with the best lift being to their SW. Sadly, this comes with the territory. 1-2” per hour rates falling in MoCo HoCo means sinking air is happening somewhere as a result - in this case; E/NE/ sections of the CWA. 

 

Skinsfan jackpot. Called it the other day. You will absolutely hit 8-10”

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Just now, GEOS5ftw said:

Just did a fun measurement with the kitchen scale - put out a large plate and measured 52 grams in 15 minutes. Dividing by the area of the plate gives a mass change of 0.34 g/hr/cm^2 which is 3.4 mm/hr, close to what some of the mesos were predicting in the narrow bands. Fun stuff. 

What did this guy just do? Still nothing in east Baltimore. This looks like NOVA storm 

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For anyone worried about the “hole” to the south, that isn’t our problem from DC north.  The current radar and all the modeling indicates that the second round of precip is from the expansion/enhancement of the shield from the west.  The remaining question is whether that can get here in time to head off the sleet line (which is coming, but can be effectively slowed by heavier precip).

Ob:  Nice fat flakes falling.  Not pouring snow, but not exactly a lazy fall either.

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Just now, MN Transplant said:

For anyone worried about the “hole” to the south, that isn’t our problem from DC north.  The current radar and all the modeling indicates that the second round of precip is from the expansion/enhancement of the shield from the west.  The remaining question is whether that can get here in time to head off the sleet line (which is coming, but can be effectively slowed by heavier precip).

Ob:  Nice fat flakes falling.  Not pouring snow, but not exactly a lazy fall either.

Yeah a nice WCB thump there as that whole thing sort of rips east and then almost SE. Weird to see, but will help offset the IP line for a time. 

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