GRR
The Monday system...
The GFS has been forecasting this for nearly a week now and the
ECMWF has since the 10th /00z run been bringing the storm closer
to us on the operational runs. The 12/00z run brings snow to GRR
from the ECMWF. Since this is polar closed upper low dropping
south into and southern stream system, this could be power house
storm. We will have to watch this closely.
DTX
Yet another system will then track near the southern Great Lakes
from the four corners Monday and Monday night. GFS and ECMWF remain
far apart with their solutions but the main story will be that a
strong low may track through the Ohio Valley region which would put
southern MI in the colder, deformation region of the low. Depending
on how far north or south it tracks will determine how far north
precipitation can reach and what ptype will occur. The piece of the
jet that will be responsible for this storm isn`t set to reach the
NW conus til Saturday night so may be some time before models really
start converging on a track.