Active AlertsLockport, IL

What: Flash flooding caused by excessive rainfall continues to be possible.
Where: Much of northern and central Illinois and extreme northwest Indiana.
When: Until 5 AM CDT Saturday.
Impacts: Creeks and streams may rise out of their banks. Ongoing river flooding may worsen. Flooding may occur in poor drainage and urban areas. Roads and streets may be flooded. Area creeks and streams are already elevated, increasing the risk of flooding due to additional rainfall.
Additional Details: - A line of thunderstorms, some capable of producing rainfall rates of up to 2 inches per hour, will move across the area this evening into the early overnight hours. Despite the expected relatively fast storm movement, anomalously high atmospheric moisture content will support high rainfall rates. In many areas, soil moisture remains very high, including near the Illinois-Wisconsin border where nearly saturated soils exist due to recent heavy rainfall. While many areas may see lighter accumulations less than 0.5 inches, soils will be very sensitive to rainfall. Areas near and downstream of heavy rainfall, particularly urban areas and locations in far northern Illinois, may see flash flooding and river flooding impacts, some locally significant. - http://www.weather.gov/safety/flood

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.

What: Flooding caused by excessive rainfall is expected.
Where: A portion of northeast Illinois, including the following counties, Cook, DuPage and Will.
When: Until 345 AM CDT Saturday.
Impacts: Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Roads and streets may be flooded.
Additional Details: - At 940 PM CDT, Doppler radar indicated rainfall rates up to 1 inch per hour moving into the area. Up to 1 inch of rainfall was been observed so far in northern Cook County due to earlier rainfall. Roadway and underpass flooding may occur shortly after the onset of heavy rainfall. - Isolated rainfall up to 1 inch may occur across the area. - Some locations that will experience flooding include Chicago, Aurora, Joliet, Naperville, Elgin, Cicero, Arlington Heights, Evanston, Schaumburg, Bolingbrook, Palatine, Skokie, Des Plaines, Orland Park, Tinley Park, Oak Lawn, Berwyn, Mount Prospect, Wheaton and Hoffman Estates. - http://www.weather.gov/safety/flood

A Flood Advisory means minor flooding along waterways and other poor drainage areas is imminent or may already be occurring. Persons in the advisory area should use caution and avoid flood waters.

The storms which prompted the warning have moved out of the area. Therefore, the warning will be allowed to expire. A Tornado Watch remains in effect until 1100 PM CDT for northeastern and east central Illinois. Remember, a Severe Thunderstorm Warning still remains in effect for eastern Kankakee and eastern will until 1045 PM.