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March 20-21 Snow and other Observations


KamuSnow

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holy crap did not expect to see this today AT ALL

 

mcd0159.gif

 

Quote

Areas affected...Northern Maryland into southeastern Pennsylvania
   and New Jersey

   Concerning...Winter mixed precipitation 

   Valid 201619Z - 202015Z

   SUMMARY...Areas of moderate to heavy snow will develop across the
   discussion area, with rates will approach 1 inch per hour.  Freezing
   rain/sleet should also continue along the southern extent of the
   discussion area.

   DISCUSSION...Lift associated with a mid-level impulse centered over
   West Virginia has aided in areas of moderate to heavy snow over the
   past hour or so - especially along western and southern portions of
   the discussion area.  This area of precipitation should continue to
   develop northeastward across the remainder of the region and persist
   through at least 20Z.  Areas of dry low-level air were noted
   downstream of this precip shield (into southeastern Pennsylvania),
   although rapid moistening of the boundary layer and cooling surface
   temperatures (just below freezing) will encourage higher
   precipitation rates in that area shortly.  Rates approaching 1 inch
   per hour are possible through mid-afternoon.

   Farther southeast along an axis from central Maryland into New
   Jersey, slightly warmer low-level thermodynamic profiles are
   supporting a mixing of rain, freezing rain, and sleet.  This mixed
   precipitation should continue through 20Z and possibly beyond as a
   coastal low continues to organize southeast of the region.

 

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Love to see those mesoscale discussions! Could hear the wind starting to make that roaring sound a bit in the trees out back when I took this pic about 15 minutes ago. Closing in in an inch of accumulation so far. 29.6F currently.

eta: Note the March sun angle doing it's thing on the blacktop!

Snow_3-20-18a.jpg

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Now up to SN with dime-sized flakes.  Sticking on grassy surfaces, cars, other cold surfaces.  Temp is now down to 32F so that stuff is gonna stick pretty good compared to what happened with nor'easter #2 where it took awhile to build up (and stayed above freezing the entire event here).  DP jumped to 19 so it is moistening up.

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13 minutes ago, The Iceman said:

afternoon commute looks like it is going to be a disaster...many many people are going to be caught off guard by this. Everyone expected pretty much nothing today. The radar is lighting up like a christmas tree right now...heavy rates over the next few hours for all

 

WUNIDS_map?station=DIX&brand=wui&num=6&d

Complete and total fail of the 0z ECM run uggh it ruined my sleep last night 

* GFS too - they both need a long time out

 

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4 minutes ago, BBasile said:

Tough to keep up with the precip type and rates.  Light/mod/heavy snow/sleet.  Back and forth.  Now it's sleeting pretty well and sticking to pavement.  Gonna get messy out there.  KDIX CC showing a sleet fest here in SNJ.  

 

You can see where the line is (right over your backyard...lol) -

 

radar-03202018.png

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