Hazardous Weather Outlook
Issued by NWS Quad Cities, IA IL

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FLUS43 KDVN 210945

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
445 AM CDT Fri Jul 21 2017

Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll-
Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-
445 AM CDT Fri Jul 21 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


Scattered thunderstorms will continue into the early afternoon
hours. A few strong storms are possible, but the severe weather
risk is low. Late this afternoon through the overnight hours,
expect more widespread storms. Some severe storms are likely,
especially north of Interstate 80. The main threat is damaging
winds to 70 mph.

Pockets of heavy rain are expected late this afternoon through
tonight, and flash flooding is possible, especially over far
northwest Illinois. A flash flood watch is in effect for this area.

Hot and humid weather will continue today, with afternoon heat
indices up to 110 degrees south of Highway 30. Excessive heat
warnings and heat advisories are in effect for most of the outlook

Minor to moderate flooding is occurring or forecast on portions
of the Rock and Pecatonica Rivers. Please see the latest Flood
Statements and Flood Warnings for details.


Additional rounds of thunderstorms are possible Saturday and
Sunday. Severe weather is possible, but confidence on timing and
favored locations remains low. If severe storms do occur, the main
threats would be damaging winds and flash flooding.

Hot and muggy conditions will continue Saturday, with afternoon
heat indices up to 110 degrees south of Highway 30.

Depending on the amounts and location of heavy rain through Friday
night, forecast crests on the Rock and Pecatonica Rivers could be
adjusted higher.


Spotter activation is likely late this afternoon into the overnight
hours, especially north of Interstate 80.


RP Kinney

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