The forecast models started picking it up last week.
For the most part, it's holding to form, however, forecasters are still trying to pinpoint the exact track of the system, which is in Texas today.
It will track across the lower Mississippi Valley before taking a turn to the north and make its way up into the Ohio Valley and then somewhere through our forecast area.
That somewhere is important, according to the National Weather Service's forecaster's discussion, because it holds the answer as to the exact type of weather that Buffalo and Western New York can expect to get.
There will be announcements, bulletins and probably watches and warnings coming sometime over the next 24 hours as the storm track takes shape.
A track farther east will likely bring a better chance for mixed precipitation along with heavy rainfall all day Wednesday and into the night with up to 1.5 inches possible by early Thursday. That could result in some flooding in areas, forecasters said.
If the storm trends farther west, strong winds are most likely, forecasters reported.
In the meantime, a winter weather advisory is posted through 11 a.m. Wednesday calling for a "wintry mix of snow, sleet and freezing rain" for Western and Central New York.
The forecast shows a 100 percent chance of rain Wednesday, with high temperatures in the lower 40s, then more rain overnight with readings in the upper 30s.
Behind the passing storm system, colder air moves back into the region and a return to snow and lake-effect snow is expected.
Snow will develop later Thursday and could accumulate several inches overnight with blustery conditions forecast and temperatures dropping into the upper teens.
Snow showers also look likely Friday with colder than average high temperatures only in the 20s, the weather service forecast shows.