Wintry mix to rain to snow Friday
Updated On: Feb 08 2013 12:22:48 PM CST
Today: Snow, sleet and rain; becoming all snow late. Coating to 2” by late afternoon (slick spots for some). High: 37
Tonight: Snow, heavy at times; poor travel/blowing snow. Low: 26
Saturday: Clouds/flurries early, then some sunshine and windy (areas of blowing snow). High: 29 Low: 10
The National Weather Service has issued a winter storm warning through Saturday morning.
We are seeing rain and snow this afternoon for most areas (with a bit of sleet mixed in).
There can be a coating to an inch or two by late this afternoon causing slick spots on some area roadways.
The evening commute can be slippery with snow falling at that time in some areas. Snow will come down heavy at times tonight causing poor travel conditions and blowing snow as the wind can gust to 35 mph.
As colder air wraps into this system, all precipitation will change to snow late Friday afternoon and Friday night.
Look for 1-3” of snow South and West, 3-6” for the central parts of the region, and 6-12” of snow to the North and East .
Clearly, there will be very tight gradients with widely varying amounts (greater amounts north and east; lesser amounts south).
Link: Hour-by-hour forecasts
Link: Interactive radar
Drier air will move in for the upcoming weekend, with highs in the upper 30s to around 40 degrees.
Chief Meteorologist Ed Hanna provides more detail:
A significant event is closing in on us, and even at this stage, there are still some uncertainties. Please see our snow totals map which, as the storm evolves, may change. At this point, there are two very distinct and totally separate entities with no connection to each other. The northern and southern branch systems are not “talking to each other “ in any way yet. If, for some reason (30% chance), they never connect, or the connection happens later, we could end up with lower snowfall totals.
On the latest surface map, we see one low pressure system tracking in to the Midwest, the other low down in Georgia. The northern feature is forecast to be near Cleveland on Friday morning, while the southern storm will have tracked to near Cape Hatteras on Friday morning. At this point, it does appear that the southern storm will be the stronger of the two. The "transfer of energy of the northern feature" (weakening/phasing with the southern storm) is key to how all this plays out.
The longer the northern low hangs on without weakening, the flow of air off the Atlantic Ocean will keep the surface temperatures a bit higher.
On the other hand, the faster the transfer happens, the more quickly our winds will be able to swing around into the northeast and north, leading to a colder atmosphere overall. The turn to colder air will eventually lead to greater snowfall totals.
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