Winter Weather Advisory DroppedDecember 27th, 2012 at 9:48 pm by Bill Steffen under Bill's Blog, Weather
The National Weather Service has dropped the Winter Weather Advisory for the entire area. The morning run of the NAM (Caribou) shows just a dusting. It is snowing at my house at 12:30, but the flakes are so small and few that it could snow like this for a week and not accumulate an inch. Light winds today are making it a rather comfortable day to be outdoors. The GFS does give G.R. a temperature of zero on the morning of 1/4. That’s 2 runs in a row of the GFS with some Arctic cold around 1/4. The European is in now. It gives Grand Rapids 0.10″ of precipitation…that’s maybe an inch and a half. The European is right with the GFS on the cold shot for 1/3-1/5. It has the temperature in G.R. down to 9.5F Thursday evening the 3rd and the 850mb temperature at -18.5 (or -1.3F). Depending on the usual factors (wind direction, wind speed, overall moisture content of the atmosphere, cyclonic curvature, etc.) we could get some hefty lake-effect snow out of air that cold.
Snowfall from the Weds. system: 14″ Rochester NY, 15″ Montreal, Canada, 12″ Bradford PA, 11″ Chagrin Falls OH, Port Huron MI and Burlington VT. The storm produced wind gusts of 74 mph at Blue Hill MA and 70 mph at Eaton Neck NY. GRR is still +6.7 degrees above average for December thru Thursday.