roarusdogus wrote:Lowpressure wrote:D.C NWS is mentioning the possibility of a winter storm on the late weekend now. Highs in the 34-38 range lows in the 24 -28 range. Could get interesting.
I think DC will be more rain than anything.
DCA/BWI will see a period of significant snow followed by a change to rain (freezing rain or sleet more likely however) then another period of snow on the back side of the system. Further to the Northwest....
Frederick...Westminster...hagerstown...Martinsburg...
Major Snowfall accumulations (6-12" or more) is becoming INCREASINGLY likely. This system WILL be coler than XMAS 02 and the initial low WILL NOT run as far north into the ohio valley as the Xmas events. the coastal transfer (of the H85 low) will take place just inland across eastern VA...this the big citiesshould see a change to PL and ZR until the system becoems strong enough to drag the cold air back in.
The high to the north will supply enough low level cold air for the major cities to maintain frozen precipitation through the entire event and support all snow with the overrunning associatred with the warm air advection ahead of the first low pressure center.
The main axis of heaviest snow is 50-75 miles either side of a line from hagerstown MD to High point NJ and then continuing northeastward to Concord NH. Boston and NYC with the exception of Long Island and the cape/nantucket could get away with allsnow...however as of right now given the questions invloved...i think it would be safer to go with a breif mix in in NYC and BOX as the 850 low jumps to eastern VA. the Surface low will begin to take shape just east of the delmarva (undergo bomb cyclogenesis - yes folks this system will likely be stronger than what the models indicate) and run northeastward to the benchmark by monday evening then be off the southeast coast of Nova scotia tuesday as a VERY deep (970-980mb) gale center.
Cities MOST LIKELY to see in excess of 12"---->
HGR...BFD...MDT...IPT...AVP...ABE...MPO...BGM...MSV...PSF...POU...