Search
  • My Personal Weatherman

National Weather Service snow map and info for Long Island with some snow possible:

I will have more updates, but here is the new snow map from the National Weather Service.


The following is the discussion from the National Weather Service in NY covering Long Island and the tri-state area as they are expecting a some snow to mix in:


There is a lot of uncertainty with the the storm sys for Sat. The 12Z models all suggested that deepening low pres would track just south and east of the area, passing near Cape Cod about 00Z Sun. Even this consensus has been short lived however, as the 18Z NAM has come in significantly south of this clustering. What is relatively certain is that with a lack of cold air in place, any snow will be on the back side of the sys. The 12Z runs of the GFS, NAM and ECMWF all supported this notion, but still temps are marginal at best if looking at the raw model sfc data and guidance. With a deepening low and nly component flow locking in however, temps in the column should support snow as they wet bulb. The models in fact all show the h925 to h7 layer cooling to blw freezing in the deformation zone, even down to the coast. BL temps will be toughest near the coast, especially LI with flow off the water. Elsewhere, without any onshore component, it seems likely that the cooling would be sufficient to support a changeover during the day on Sat. This is what the fcst indicates. A few inches has been fcst for the interior, with the higher elevations of wrn CT to NE NJ favored. Lesser amounts south and east of this area.



6 views0 comments