GRR is toying with me
We are still expecting a system to affect the area in the Friday
through Sunday time frame. There are multiple upper troughs and
cut off lows that come together in some fashion to bring the low
to the lakes this weekend. The first trough is currently in the
middle of the Pacific with a cut off low dropping south near
Southern California. The waves come together over the plains on
Friday with a low moving through the Great Lakes in the Saturday
time frame. At this point, looking at the operational models, the
Canadian is furthest northwest moving a low through Wisconsin. The
GFS is more of a middle of the road track, moving the low through
the GRR forecast area. The ECMWF is further southeast, tracking
the low through Southeast Lower Michigan. 12z European ensemble
low locations Saturday evening are starting to zero in on the
southern Great Lakes area for the track of the low, so leaning
towards a GFS or ECMWF solution.
What this means is we are looking at a potentially impactful
system this weekend with a rain to snow type of scenario. Wind is
also in play depending on the depth of the low. Way too early to
nail down any details at this point with this system, but we are
certainly watching it. It appears we are looking at a period of
lake effect snow as well on the backside, Sunday into Monday.
More to come this week as details emerge.