A good cold air damming signature is showing up with northerly ageostrophic wind flow starting to push colder boundary layer temperatures further south. The second image depicts 850mb temperatures which will be important for determining snow versus sleet versus freezing rain. As you can see, a very tight gradient is present. This gradient should push south through tonight.
Any precipitation that falls later tonight will likely be in the form of sleet or rain. No accumulations are expected though tomorrow morning.
Freezing rain, sleet, and snow will start to fall tomorrow around 9am, and ice accretion with some light snow and sleet accumulation as well will be likely by noon, quickly making travel difficult.
|posted by Sam Lillo @ 12/10/2008 09:58:00 PM
