Saturday, May 12, 2018

Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 122057 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 357 PM CDT Sat May 12 2018

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- 357 PM CDT Sat May 12 2018 /457 PM EDT Sat May 12 2018/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR North Central Illinois… Northeast Illinois AND Northwest Indiana.

.DAY ONE…Tonight.

WEATHER HAZARDS EXPECTED:

Significant Thunderstorm Risk...with an associated:      Limited Hail Risk...up to half dollar size.  Elevated Flooding Risk.

DISCUSSION:

Additional showers and thunderstorms are expected to develop across the area this evening and continue through the overnight hours. Multiple heavy rain producing storms may move over the same areas resulting in an increased threat for flash flooding, especially between I-88 and I-80. Some storms could also be severe tonight, particularly along and south of I-80. The primary severe threat is large hail.

.DAYS TWO THROUGH SEVEN…Sunday through Friday.

Sunday and Monday…

Limited Flooding Risk.  Limited Severe Thunderstorm Risk.

Tuesday…

Elevated Thunderstorm Risk.

Wednesday through Friday…

Limited Thunderstorm Risk.

DISCUSSION:

Periods of showers and thunderstorms will remain possible over the next several days, as a nearly stationary frontal boundary remains just south of the outlook area. There is some potential for strong to severe storms, along with heavy rainfall, again Sunday night and late Monday into Monday night.

.SPOTTER INFORMATION STATEMENT…

Spotters may be needed tonight.

GENERAL STORM MOTION OF THE DAY:

Moving east at 35 to 40 MPH.

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