I waited for the evening HREF to come in so I could use the very latest model data for this forecast. Based on the HREF , NAM 12k m, NAM 3Km and the HRRR, it seems likely there will be high clouds over the Eclipse track from Indiana into Ohio. Being high clouds, more than likely you’d see some of the Eclipse. The best viewing still seems to be in over New Hampshire and Maine.
I will update this forecast once the high resolution models get within 48 hours of the time of the Eclipse (2-3 pm Monday).
Note the times of Totality at various locations came from Astronomy as did slide #2.
This was both nationally and locally one of the warmest winters on record, with records going back to 1895. Nationally and locally snowfall was below to well below normal. Precipitation was mostly near normal.
For Southwest Michigan, this was the warmest February on record. Both the total precipitation and snowfall were well below normal. Nationally this was the 3rd warmest and 40th driest on record.
There was a narrow band of 5″ to 8″ of snow From Near Holland Michigan, across the Grand Rapids area, to just north of Flint. Most of the snow fell in about 12 hours.
The National Weather Service offices across the western Great Lakes have all issued Winter Weather Advisories for this snowfall event that is expected to continue, even over Iowa into northern Illinois and Wisconsin into early Friday afternoon and over Lower Michigan into the early evening of Friday.
The following slides will show you the details of this event that is expected to bring up to 10″ of snow in about 12 hours to some locations in western Great Lakes. It will likely be the heaviest snowfall over most of the area since mid February.
A narrow band of snowfall greater than 6″ in 12 hours is expected about 100 miles north of the track of the surface low. That would be near or just north of I-96 in Michigan. Snowfall rates in the heaviest snow area will be high enough to accumulate during the daytime, even in late March.
This is an update to what I did yesterday but with a lot more detail. I have added CONUS scale winter temperature anomalies for each of the past 10 years so you can see for yourself, in your area how the cold winter frequency has changed (there is a summary CONUS scale summary table for this now too). I have added correlation slides from CPC and Physical Science Laboratories to show there really the correlation I am suggesting is true.
At least over Southwest Michigan and likely most of the northern CONUS, we have lacked cold winter (relative to 1991-2020 normal) since the winter of 2014/2015, which was the last cold winter. I would suggest warming oceans are at least part of the story.
themarinocast 