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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
316 PM CDT Wed May 27 2020

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-282030-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
316 PM CDT Wed May 27 2020 /416 PM EDT Wed May 27 2020/

This Hazardous Weather Outlook is for portions of North Central
Illinois...Northeast Illinois and Northwest Indiana.

.DAY ONE...Tonight.

Weather hazards expected...

  Limited Thunderstorm Risk.

DISCUSSION...

Scattered slow moving showers and thunderstorms are expected to
persist into the early evening. The main thunderstorm threats are
lightning and heavy downpours, some of which could cause isolated
flooding. Any isolated stronger thunderstorms may also produce
gusty winds. The coverage of thunderstorms should diminish through
the evening.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Thursday...
  Limited Flooding Risk in the Afternoon and Evening.
  Elevated Thunderstorm Risk.
Friday...
  Limited Thunderstorm Risk southeast of I55.
Monday and Tuesday...
  Limited Thunderstorm Risk.

DISCUSSION:

On Thursday afternoon into Thursday evening, showers and
thunderstorms are expected to increase in coverage as a cold front
approaches. Due to a moist air mass and the wet conditions this
month, thunderstorms potentially producing very heavy downpours
may cause isolated to perhaps scattered instances of flash
flooding, primarily over north central Illinois. The threat for
thunderstorms will end Thursday night into Friday morning.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the north northwest at 15 mph.


$$



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