I know this really is not much snow at all, the main concern is freezing on sidewalks and backstreets and parking lots.
Here are a few photos I took from 7:30 am until about 10:30 am today in Horsham PA.
Here is the most recent advisory from the NWS;
Statement as of 1:08 PM EST on January 21, 2012
... Winter Weather Advisory now in effect until 5 PM EST this
* hazard types... snow.
* Accumulations... total snow accumulation of 4 to 6
inches... along with up to a tenth of an inch of ice.
* Impacts... widespread slippery driving and walking... especially
on untreated roadways and sidewalks.
* Temperatures... remaining in the teens and lower 20s.
A Winter Weather Advisory means that periods of snow... sleet... or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities... and use caution while