Recently, I posted a story “Cool thoughts: awaiting an epic swim across Lake Michigan by “local couple”. Well, the swim is underway, water temperatures are tolerable, and the swimmers are confident.

“Team Tow” (Jeff and Sara Tow) started their journey yesterday from the Two Rivers, WI lighthouse at 8:30 a.m. EDT and, as of 9:15 a.m. today, had covered 37 miles of their 50-mile swim.

They estimate that they will arrive at the “Big Sauble Point” lighthouse in Ludington, MI by late afternoon.

Assuming they’re successful, they will be the first husband-wife team to swim across Lake Michigan.

UPDATE, 11:25 a.m.: Before Team Tow reaches the shore, it looks like they’re going to have to swim through some very chilly water .

Near the Ludington shoreline, water temperatures have dropped from the low-to-mid 70s into the low 50s over the past few days.NOAA describes the cause:

[The] drastic change in water temperature is a result of the strong Northeast winds from the wet system that affected the area last Thursday and Friday. This process is called “upwelling”.

You can follow the progress of Team Tow’s swim at their website: throughtheblue