Was referring to December snow climo. Obviously December 2009 is the gold standard, but just cover the grass for Christmas please.
Looks like cross polar flow and a solid PNA ridge. Very good to see.
Snow climo down here is not as robust as Philly (grew up in Roxborough/Manayunk). If we manage a 4" - 8" storm out of this for Christmas proper, it will exceed norms for IAD, BWI, DCA. That's a win in my book.
Alert MCPS
MCPS, including the Virtual Academy, will open two hours late Thursday, Dec. 15, due to anticipated emergency weather conditions. More information at www.montgomeryschoolsmd.org
@MillvilleWx excellent write up as always. Your thoughts mirror mine as well. My only two questions are:
1.) Does cloud cover minimize our high temps and we bust low.
2.) With this starting overnight, does the lack of insolation mean ice accretes more effectively?
Looks like LWX extending the WWA for the Mason-Dixon counties until 4pm tomorrow. Makes sense, dews seem a bit lower than forecast, it's cloudy today and surfaces are chilled.
Icing is inherently tricky for forecast. This link was posted a few pages ago, but am posting again. Would encourage members to book mark this: https://training.weather.gov/wdtd/courses/woc/winter/fcst-hzds/ice-storm-accum/presentation_html5.html
It's only 20 - 25 min and well worth your time.