Hazardous Weather Outlook
Issued by NWS Quad Cities, IA IL

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FLUS43 KDVN 202050
HWODVN

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
350 PM 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-MOZ009-010-212100-
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-
350 PM 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...THIS AFTERNOON AND TONIGHT

A few thunderstorms are possible through early evening, but no
severe weather is expected.

Late tonight, some severe thunderstorms are possible west of the
Mississippi River. The main risks are damaging wind gusts around
60 mph and hail to golfball size. Severe storms are most favored
after midnight.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

Thunderstorms will continue into Monday morning. Isolated severe
storms are possible, mainly along and west of the Mississippi
River, with hail around quarter size and wind gusts to 60 mph. A
break in the storms is expected late Monday morning and early
afternoon. Heat indices could top 90 degrees south of Interstate
80 Monday afternoon, although confidence is low due to uncertainty
in cloud cover.

Monday night, thunderstorms are likely and some of these storms
may be severe. The main severe weather threat is damaging wind
gusts up to 70 mph, with a lower potential for hail up to the size
of quarters. The strongest and most widespread storms are
expected from late afternoon through midnight. The Storm
Prediction Center has placed a slight risk for severe storms over
much of the outlook area.

Heavy rainfall is also likely Monday night. Rainfall amounts of 1 to
3 inches are possible which could lead to flash flooding, especially
where storms repeat over the same area.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed late tonight and again Monday and
Monday night.

$$
RP Kinney/Haase



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