FLUS43 KGRR 182044

Hazardous Weather Outlook
National Weather Service Grand Rapids MI
444 PM EDT Thu Jul 18 2019

Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
444 PM EDT Thu Jul 18 2019

This hazardous weather outlook is for portions of southwest Lower

.DAY ONE...Tonight

Thunderstorms will redevelop over the Upper Midwest tonight, and
may track into Lower Michigan after midnight. These storms will
have the potential to produce very heavy rainfall in a short
period of time, which could lead to water-covered roadways and
ponding in low-lying areas. High rainfall rates will also create
low visibility and poor driving conditions. The highest risk for
flooding will be over Central Michigan, where the chance for
multiple storms to track over the same area looks greater. There
is also a small risk for storms to produce damaging wind gusts,
which could bring down large tree limbs and power lines.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Thunderstorm activity that begins Thursday night will likely
continue into Friday morning. Very heavy rainfall, which could
cause extremely low visibility and flooding, will be the biggest

Additional thunderstorms are possible Friday afternoon through
the weekend, with another more active period looking to develop
Saturday into Saturday night. Flooding will be the main risk.

Heat indices above 100 degrees Friday and Saturday combined with
warm, muggy nights will bring the threat for heat-related
illnesses, especially along and south of I-96.


Spotter activation will not be needed, however reports of flooding
or rainfall over 1 inch are greatly appreciated.