Friday, July 28, 2023

Areal Flood Watch for McHenry Co., IL until 3:00 AM CDT 7/29

WGUS63 KLOT 290036
FFALOT

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Chicago IL
736 PM CDT Fri Jul 28 2023


/O.NEW.KLOT.FA.A.0006.230729T0036Z-230729T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La
Salle-Kendall-Grundy-Kankakee-Northern Cook-Central Cook-Southern
Cook-Northern Will-Southern Will-Eastern Will-Lake IN-Porter-Newton-
Jasper-
Including the cities of Valparaiso, Bolingbrook, Beecher, Rochelle,
Northbrook, Naperville, Mokena, Crete, Ottawa, Crystal Lake,
Kankakee, Morocco, Marseilles, Roselawn, La Grange, Carol Stream,
Oak Park, Sycamore, Lemont, Hammond, Minooka, Oak Lawn, Channahon,
Morris, Plainfield, Elgin, Joliet, Manhattan, Rensselaer, Byron,
Buffalo Grove, Woodstock, Gurnee, Rockford, Yorkville, Cicero, Oak
Forest, Chesterton, Calumet City, Coal City, Bourbonnais, Mundelein,
Dixon, Streator, Schaumburg, Lombard, Orland Park, Peotone,
Merrillville, Mendota, Oregon, Belvidere, Plano, Chicago, DeKalb,
Downers Grove, Bradley, Park Forest, Portage, Evanston, La Salle,
Gary, Wilmington, Kentland, Palatine, Waukegan, McHenry, Oswego,
Algonquin, Aurora, Wheaton, Des Plaines, and DeMotte
736 PM CDT Fri Jul 28 2023

...FLOOD WATCH IN EFFECT UNTIL 3 AM CDT SATURDAY...

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...Portions of Illinois and northwest Indiana, including the
following areas, in Illinois, Boone, Central Cook, De Kalb,
DuPage, Eastern Will, Grundy, Kane, Kankakee, Kendall, La Salle,
Lake IL, Lee, McHenry, Northern Cook, Northern Will, Ogle,
Southern Cook, Southern Will and Winnebago. In northwest Indiana,
Jasper, Lake IN, Newton and Porter.

* WHEN...Until 3 AM CDT Saturday.

* IMPACTS...Creeks and streams may rise out of their banks. Flooding
may occur in poor drainage and urban areas. Underpasses may be
flooded. Roads and streets may be flooded.

* ADDITIONAL DETAILS...
- Thunderstorms with heavy rainfall rates up to 2 inches per
hour are possible this evening as a frontal boundary moves
across northern Illinois and northwest Indiana. Despite
relatively low soil moisture values due to ongoing drought
conditions in some areas, conditions are favorable for rain
rates that that could still cause flash flooding, especially
in urban areas.
- http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Watch for flash flooding means rapid-onset flooding is
possible, but not yet certain, based upon the latest forecasts.
Flash flooding is a dangerous situation. Persons with interests
along area rivers, creeks, and other waterways should monitor the
latest forecasts and be prepared to take action should flooding
develop.

&&


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