LSZ244 /o.con.kmqt.ma.w.0056.000000t0000z-231005t2115z/ 458 Pm Edt Thu Oct 5 2023
.a special marine warning remains in effect until 515 pm edt...
for the following areas... Eagle river to manitou island mi... Lake superior east of a line from manitou island to marquette mi and west of a line from grand marais mi to the us/canadian border beyond 5nm from shore... Lake superior from upper entrance to portage canal to manitou island mi 5nm off shore to the us/canadian border... Manitou island to point isabelle mi...
at 457 pm edt, a severe Thunderstorm capable of producing waterspouts was located near brockway mountain, or 28 nm northwest of stannard rock, moving northeast at 40 knots.
hazard...waterspouts, wind gusts 34 knots or greater, and small hail.
source...radar indicated.
impact...waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves.
locations impacted include... Manitou island.
precautionary/preparedness actions...
move to safe harbor until hazardous weather passes.
Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. SEek safe harbor immediately.
&&
lat...lon 4763 8760 4743 8747 4732 8786 4749 8801 4766 8762 time...mot...loc 2057z 241deg 40kt 4745 8781
waterspout...possible hail...<.75in wind...>34kts