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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
414 PM CDT Mon Aug 19 2019

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-201000-
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-
414 PM CDT Mon Aug 19 2019

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

Uncomfortable heat index readings in the upper 90s to near 100
degrees will continue south of Interstate 80 through early
evening.

Isolated to scattered thunderstorms will continue on the Illinois
side through sunset. Lightning and locally heavy downpours will be
the main threats with these storms.

There is a higher chance for thunderstorms after mainly after
5 AM in the western portion of the outlook area.  This round of
storms may become severe, with damaging wind gusts the primary
threat. Isolated, brief tornadoes cannot be ruled out at this
time. These storms will also produce torrential rainfall as they
pass by, producing ponding of water and sharply reduced visibility.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

A line of thunderstorms is still expected to move across portions
of the Outlook area Tuesday morning. The primary threats from
these storms will be damaging winds, frequent lightning and
torrential downpours. Latest indications suggest that most of the
line of severe storms will occur along and south of Interstate 80
Tuesday morning. There is also at least low chance for isolated
flash flooding by high rainfall rates in areas of repeated storm
activity. Current expectations are that the brunt of the severe
storms will exit east of the Outlook Area by 10 AM.

There is a chance of thunderstorms again late Tuesday night through
Wednesday, mainly across southeast Iowa, northeast Missouri, and
west central Illinois. The threat for severe weather appears low
at this time.

Additional storm chances will exist over the latter half of this
weekend. It is too early to determine the threat for severe
weather with these storms.

.SPOTTER INFORMATION STATEMENT...

Spotter and amateur radio activation may be needed late tonight
and Tuesday morning.

$$

12



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