Chicago, Illinois

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 10 AM CDT SATURDAY...

The Flash Flood Watch continues for

* Portions of Illinois and northwest Indiana, including the
following areas, in Illinois, Boone, Cook, De Kalb, DuPage,
Grundy, Kane, Kendall, La Salle, Lake, Lee, McHenry, Ogle,
Will, and Winnebago. In northwest Indiana, Lake.

* Until 10 AM CDT Saturday

* Showers and thunderstorms will be possible across the watch area
overnight which will be capable of producing locally heavy
rainfall. Soils are saturated across the region, and any heavier
rainfall rates may result in areas of flash flooding, along
with additional rises on area rivers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

...THUNDERSTORMS OVER AND APPROACHING THE WATERS...

The areas affected include...
NEARSHORE WATERS FROM WINTHROP HARBOR TO CALUMET HARBOR...
OPEN WATERS FROM WINTHROP HARBOR TO MICHIGAN CITY OUT TO MID
LAKE...

At 1009 PM CDT, Doppler radar indicated thunderstorms, with the
strongest thunderstorms capable of producing winds to around 30
knots and small hail. One of the thunderstorms was located 16 nm
southwest of Montrose Harbor, moving northeast at 40 knots. Other
thunderstorms were near Waukegan Harbor and also moving northeast at
about 40 knots.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners can expect gusty winds to around 30 knots, locally higher
waves, and lightning strikes. Boaters should seek safe harbor
immediately until these storms pass.

&&