Hazardous Weather Outlook
Issued by NWS Quad Cities, IA IL

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FLUS43 KDVN 201004

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
504 AM CDT Thu Jul 20 2017

Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll-
Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-
504 AM CDT Thu Jul 20 2017

This Hazardous Weather Outlook is for portions of north central
Illinois...northwest Illinois...west central Illinois...east
central Iowa...northeast Iowa...southeast Iowa and northeast


Thunderstorms with strong winds, small hail and torrential
rainfall will impact portions of eastern Iowa and northwest
Illinois early this morning. Heavy rain falling on areas already
saturated from recent storms may lead to localized flash flooding.

Later today and tonight, scattered thunderstorms may redevelop
across eastern Iowa and northwest Illinois. These storms will have
the potential to produce damaging wind, large hail and torrential


Friday through Saturday...several rounds of thunderstorm complexes
will push across portions of the outlook area, mainly along and
north of Interstate 80. There is the potential for these storms to
be severe with damaging winds and large hail. Torrential rainfall is
likely with several inches of rain possible in a short time. This
could lead to localized flash flooding. However, confidence is low
on the timing and exact location of the thunderstorm complexes.

Hot and humid conditions can be expected through Saturday. The
hotter temperatures should generally occur near and south of Highway
30. Temperatures are expected to push well into the 90s with
dewpoints well into the 70s to around 80. This will soar heat index
values to 105 to 110 every afternoon through Saturday. But cloud
cover and storm outflow may bring temporary cool downs to the
ambient temperatures, especially north of Highway 30.

Heat advisories and excessive heat warnings are in place for
northeast Missouri, much of eastern Iowa and west central Illinois
through Saturday. Please see the latest National Weather Service
statements for details.


Storm spotter activation may be needed this afternoon and evening
across eastern Iowa and northwest Illinois.



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