National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FLUS43 KDVN 222246
HWODVN

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
546 PM CDT Thu Oct 22 2020

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-231000-
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-
546 PM CDT Thu Oct 22 2020

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...TONIGHT

Thunderstorms are likely this evening and into the overnight
hours ahead of an advancing cold front. A few severe storms are
possible, mainly between now and 11 pm. The primary threat appears
to be large hail. But if some storms are able to form further
south and east down toward the Interstate 80 corridor or even
parts of southeast Iowa such as the Sigourney and Washington areas,
they may be able to produce damaging winds and an isolated
tornado through 9 pm this evening. The Storm Prediction center
continues with a Slight Risk for severe storms for locations
north and west of a line generally from Iowa City to Dubuque Iowa.
There is a Marginal Risk for severe storms along and west of a
line from Mount Pleasant Iowa, to the Quad Cities, and to Freeport
Illinois.

Storms producing heavy rain moving over the same areas tonight,
may produce ponding of water or even some localized flooding in
areas that received heavy rain last night. Areas more susceptible
for this are along and west of a line from Sigourney Iowa, to the
northern Quad Cities, and to a Freeport Illinois line.

Areas of dense fog reducing visibility down to a quarter mile will
linger along and north of the Highway 30 corridor through mid
evening. Much of this area is currently in a Dense Fog Advisory
this evening.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this evening across portions of
the Outlook Area.

$$

12