Hazardous Weather Outlook
Issued by NWS Quad Cities, IA IL

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FLUS43 KDVN 201020
HWODVN

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
520 AM CDT Sun Aug 20 2017

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-211030-
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson-
Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson-
Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll-
Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-
Warren-Hancock-McDonough-Scotland-Clark-
520 AM CDT Sun Aug 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
Missouri.

.DAY ONE...TODAY AND TONIGHT

A line of thunderstorms will affect parts of the southwest and
southern forecast area between 6 to 10 AM this morning. Lightning
is a threat in the counties along and south of I-80. Wind gusts
around 40 mph are possible along and south of highway 34, west of
Galesburg, Illinois.

There is a Marginal risk for severe thunderstorms this afternoon
through tonight along and west of a line from Delaware County to
the Quad Cities. The primary risks with the strongest storms are
localized flash flooding from heavy rainfall and damaging wind
gusts. Slow moving thunderstorms may produce rainfall rates of 1
to 2 inches per hour. However, confidence is low on the placement
and timing of the heaviest rain. The slightly favored area for
heavy rainfall is south of Interstate 80.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

Thunderstorms are likely Monday through Monday night and some of
these storms may be severe.  The main severe weather threat will
be damaging wind gusts over 60 mph, with a lower potential for
hail up to the size of quarters. The strongest storms are expected
from late afternoon through midnight. The Storm Prediction center
has a placed a slight risk over the entire outlook area.

Heavy rainfall will also be possible, especially north of Highway
30 Monday night. Rainfall amounts well over 1 inch in a short
amount of time could lead to localized flooding.

Tuesday, isolated non-thunderstorms will be possible in the
morning.

.SPOTTER INFORMATION STATEMENT...



$$

Uttech/Sheets



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