Monday: A 30 percent chance of showers and thunderstorms, mainly between 7am and 1pm. Mostly cloudy, with a high near 88. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night: Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 71. South southwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday: A chance of showers and thunderstorms before 1pm, then a slight chance of showers. Cloudy, then gradually becoming mostly sunny, with a high near 80. West southwest wind around 10 mph becoming northwest in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 50%.
Tuesday Night: Mostly clear, with a low around 59. North northwest wind 5 to 10 mph.
Wednesday: Sunny, with a high near 76.
Wednesday Night: Mostly clear, with a low around 57.
Thursday: A slight chance of showers before 1pm. Mostly sunny, with a high near 74.
Thursday Night: Mostly clear, with a low around 56.
Friday: Sunny, with a high near 76.
Friday Night: Partly cloudy, with a low around 58.
Saturday: Mostly sunny, with a high near 78.
Saturday Night: Partly cloudy, with a low around 61.
Sunday: Partly sunny, with a high near 79.
Amf Ohare IL 41.98°N 87.9°W
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National Weather Service Chicago/Romeoville, IL
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Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 335 PM CDT Sun Aug 20 2017
ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019- 212045- Winnebago-Boone-McHenry-Lake Illinois-Ogle-Lee-De Kalb-Kane- DuPage-Cook-La Salle-Kendall-Grundy-Will-Kankakee-Livingston- Iroquois-Ford-Lake Indiana-Porter-Newton-Jasper-Benton- 335 PM CDT Sun Aug 20 2017 /435 PM EDT Sun Aug 20 2017/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS... NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...Tonight.
WEATHER HAZARDS EXPECTED: Limited Thunderstorm Risk...with an associated: Limited Hail Risk...up to quarter size. Limited Thunderstorm Wind Damage Risk...up to 60 MPH.
DISCUSSION:
Isolated thunderstorms are possible from late this afternoon into tonight. The strongest of these may be capable of producing isolated one inch hail or wind gusts to 60 mph. Not all areas will see rain.
.DAYS TWO THROUGH SEVEN...Monday through Saturday.
Monday... Limited Flooding Risk. Elevated Severe Thunderstorm Risk. Tuesday... Limited Thunderstorm Risk.
DISCUSSION:
Weakening thunderstorms may move into the area from the west Monday morning. A greater potential for strong to severe storms will develop Monday night, as a cold front approaches the area. Thunderstorms are expected to move into the area Monday evening and could be severe, with damaging winds the primary threat. The severe threat would likely diminish overnight, though the potential for locally heavy rainfall will persist. Additional thunderstorms may linger Tuesday, especially south and east of Chicago.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
moving east at 15 to 20 MPH...