We saw some sun yesterday mainly in the morning before the lake effect kicked back in again. The high was 37° and the low 28°. This is like a heatwave compared to temps in Alaska which are in the negative territory and will remain so all week, -20° to -30° forecast for this week for highs. Northern Canada is the same. This cold air mass is forecast to stay where it is, just something to keep in mind as we get into December though there are no signs this is coming here any time soon.
We will see some sun early before the clouds move back in today bringing in a mixed bag of precip. Some areas could see another 1 to 2 inches of snow. Any snow we get will melt off by mid-week as temps warm into the 40s.
- Light Snow To Cause Some Travel Impacts this Evening - Next upper wave embedded within an active northwest flow pattern will clip across the Great Lakes late today and tonight, sending an area of surface low pressure across Michigan. Warm advection and isentropic ascent will commence this afternoon over West Michigan, but it will probably take a few hours for the airmass to saturate down for accumulating snow as it will initially be dry, and early forcing will not be too strong. That looks to change for the evening as elevated frontal boundary slides in overhead and left exit region forcing over the top of it prompts a decent FGEN response. Stronger upright forcing in tandem with the arrival of deeper moisture should allow for better precipitation rates. Forcing is centered well within a saturated DGZ, but it is up quite high (H600+), and general sense is that we will see steady light across West Michigan this evening. Like the snow event from Saturday, the system`s trajectory will allow for lightest amounts and a shorter window for snow across far Southwest Lower. Current forecast is for a broad area of 1-2" snow amounts roughly northeast of a line from Muskegon to Grand Rapids to Battle Creek, with locally higher amounts possible. High temperatures today are expected to reach the mid and upper 30s before diurnal and wet-bulb cooling allow temperatures to drop close to freezing in the 6-8PM time window (during snow). Impacts to roads may be small at first given temperatures initially above freezing, but we should start to see some slick roads developing after dark. Moisture and forcing look to peel away pretty quick overnight, while inversion heights crash over the lake late tonight through Tuesday morning. Any lingering snow showers or drizzle should be light and spotty. - Warmer For Mid Week - Yet another low pressure system will clip the Northern Great Lakes Tuesday, pulling a weak cold front through the area late. This looks to have little moisture to work with, and while we could see a few light snow showers near/north of US 10, the main impact will likely be modestly gusty winds and cool overnight lows in the low/mid 20s Tuesday night. Before the front passes through, highs Tuesday should reach the upper 30s to low 40s. Surface ridging following by a shot of warm air advection ahead of another low pressure system should boost highs well into the 40s for much of West Michigan Wednesday and Thursday. 50 degree highs look within reach Thursday for the I- 94 corridor, per quite a few GFS and Euro ensemble forecast members. May see another decent shot of precipitation north of I-96 Wednesday along the warm front, but there is quite a bit of discrepancy within the model solutions as to how far south into Lower Michigan this will occur. Warming temps would allow a lot of this to fall as rain if it does make it down this far. Temperatures look to trend cooler again for next weekend. The active pattern will continue, which may bring snow back into the area, but model solutions have shown very little run to run and model to model consistency to get too excited about anything yet.