Issued by NWS Chicago, IL
000 FGUS73 KLOT 281938 ESFLOT ILC007-031-037-043-053-063-075-089-091-093-097-099-103-105-111- 141-197-201-INC007-073-089-111-127-290745- HYDROLOGIC OUTLOOK NATIONAL WEATHER SERVICE CHICAGO IL 238 PM CDT WED OCT 28 2009 /338 PM EDT WED OCT 28 2009/ ...HEAVY RAINFALL AND FLOODING POSSIBLE THURSDAY NIGHT INTO FRIDAY... A POWERFUL STORM SYSTEM WILL MOVE NORTH ACROSS THE PLAINS THURSDAY AND THURSDAY NIGHT WITH A TRAILING COLD FRONT MOVING ACROSS NORTHERN ILLINOIS AND NORTHWEST INDIANA FRIDAY MORNING. RAIN IS EXPECTED TO DEVELOP ACROSS THE AREA THURSDAY AFTERNOON AND CONTINUE THROUGH FRIDAY MORNING. SCATTERED THUNDERSTORMS ARE ALSO POSSIBLE DURING THIS TIME. MODEL FORECASTS CONTINUE TO INDICATE MANY AREAS MAY RECEIVE ONE INCH OF RAIN WITH THE POTENTIAL FOR UP TO TWO INCHES OF RAIN. HOWEVER...THE FORECAST AXIS OF HEAVY RAIN CONTINUES TO SHIFT... THUS IT IS TOO EARLY TO PINPOINT WHICH AREAS WILL RECEIVE THE HEAVIEST RAIN. WITH THE HEAVY RAINS THAT FELL ACROSS THE AREA OVER THE PAST TWO WEEKS...THE GROUND REMAINS SATURATED. MANY RIVER LEVELS ALSO REMAIN HIGH...WITH SOME NEAR BANKFUL. SHOULD THE EXPECTED RAINFALL AMOUNTS MATERIALIZE...ADDITIONAL RISES ON AREA RIVERS IN ADDITION TO MINOR OR LOCALIZED FLOODING WILL BE POSSIBLE THURSDAY NIGHT...FRIDAY AND POSSIBLY INTO THIS WEEKEND. $$ CMS