The N8DUY repeater on 145.15 (minus offset, 100 Hz PL) is used for the Washtenaw County Skywarn net during severe weather. It also hosts a weekly ARPSC net on Sunday nights at 8:30 p.m. local time.
The repeater is located near the interchange of I-94 and M-14 in Scio Township. It reaches all of Washtenaw County, and if conditions are favorable can be heard as far south as Maumee, Ohio, and as far east as Pontiac, Michigan.
You can also listen in via Broadcastify to a relay of the signal, via Washtenaw Skywarn.