Severe weather could bring isolated tornado to Upper Michigan

Strong storms expected Up North on Sunday


DETROIT – Parts of Upper Michigan are at risk for an isolated tornado Sunday afternoon.

The Storm Prediction Center places parts of southern Upper Michigan and the northern parts of Lower Michigan in the 2-5 percent tornado range.

A severe thunderstorm watch is in effect across southern portions of Upper Michigan ahead of an line of storms lifting northeast out of Wisconsin this afternoon. Straight-line damaging winds up to 70 mph will be possible, along with large hail and dangerous lightning.

Here's the info from the National Weather Service:

A well-developed bowing MCS continues to move east-northeast at around 50 kts with a history of wind damage/measured severe gusts and large hail.  In the short-term this MCS is likely to track along the instability gradient as the warm front slowly lifts north across central/northern Wisconsin and the Upper Peninsula of Michigan aided by 40-45 kt 850 mb inflow. Severe wind and hail will remain primary threats, with a tornado risk associated with QLCS circulations.

Severe storms may also develop in advance of the MCS associated with low-level warm advection, with supercell structures possible given ample effective shear and buoyancy.  Isolated strong/severe storms 
are expected to expected to redevelop later this afternoon west of the MCS along the composite frontal boundary as afternoon heating/destabilization takes place within a favorably sheared environment. Isolated occurrences of large hail and damaging winds will be possible.

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