Weather for Iroquois, Illinois
Lat: 40.83N, Lon: 87.58W
Wx Zone: ILZ033
Illinois Drought MonitorThe Illinois Drought monitor is a subset of the United States Monitor, issued every Thursday morning, based on drought conditions the previous Tuesday. The map below shows the current drought level around the state, and the percent of Illinois land area in each drought level compared to the previous week. Read an explanation of the drought intensities and what they mean. |
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Illinois Hydrologic Information StatementNote that if drought conditions are not being experienced, or in the case of river flooding or heavy rain, this statement may be used to indicate river flows or flood potential. 000 FGUS73 KLOT 311031 ESFLOT ILC007-031-037-043-053-063-075-089-091-093-097-099-103-105-111- 141-197-201-INC007-073-089-111-127-312230- HYDROLOGIC OUTLOOK NATIONAL WEATHER SERVICE CHICAGO IL 431 AM CST FRI DEC 31 2010 /531 AM EST FRI DEC 31 2010/ ...RISES ON AREA STREAMS EXPECTED INTO THE WEEKEND... A COMBINATION OF MELTING SNOW AND RAINFALL OVER THE NEXT 18 TO 24 HOURS WILL RESULT IN RISES ON AREA STREAMS INTO THE WEEKEND. WARM SOUTHERLY WINDS HAVE MELTED THE MAJORITY OF THE EXISTING SNOW PACK. PRIOR TO THE MILD AIR...SNOW DEPTHS RANGED FROM 4 TO 7 INCHES AS OF THURSDAY MORNING. SNOW DEPTHS HAVE NOW FALLEN TO BETWEEN A TRACE TO 2 INCHES. IN MANY LOCATIONS THE GROUND REMAINS FROZEN WITH FROST DEPTHS BETWEEN 2 AND 6 INCHES ACROSS NORTHERN ILLINOIS AND NORTHWEST INDIANA. FROZEN GROUND CONDITIONS WILL PREVENT INFILTRATION OF MELTING SNOW PACK AND RAINFALL INTO THE SOIL. THE CURRENT FORECAST RAINFALL FOR THE NEXT 24 HOURS RANGES FROM 0.25 INCHES ACROSS NORTHWEST ILLINOIS...UP TO 1 INCH ACROSS CENTRAL ILLINOIS TO NORTHEAST ILLINOIS AND THROUGH NORTHWEST INDIANA...WHICH INCLUDES THE LITTLE CALUMET AND KANKAKEE RIVER WATERSHEDS. RUNOFF FROM SNOW MELT AND RAINFALL WILL RESULT IN RISES ON STREAMS WITHIN NORTHERN ILLINOIS AND NORTHWEST INDIANA THROUGH FRIDAY NIGHT. ONE CONCERN WITH REGARDS TO THE RIVER FORECASTS IS JUST HOW QUICKLY COLD AIR WILL MOVE IN AFTER PASSAGE OF A COLD FRONT FRIDAY NIGHT. ITS POSSIBLE THAT NOT ALL THE FORECAST RUNOFF WOULD MAKE IT TO THE STREAMS IF A RAPID TEMPERATURE DROP CAUSES WATER TO FREEZE ENROUTE. THIS WOULD RESULT IN LOWER CRESTS ON AREA RIVERS. ANOTHER CONCERN IS THE POSSIBILITY OF ICE JAMS. RIVER ICE SPOTTERS REPORTED ICE ON MANY RIVERS AS OF MONDAY MORNING. AS STREAMFLOWS INCREASE DUE TO RUNOFF...THE POTENTIAL WILL INCREASE FOR ICE JAMS AND ICE JAM FLOODING AS THE ICE COVER IS BROKEN AND TRANSPORTED DOWNSTREAM. RESIDENTS IN LOW LYING AND FLOOD PRONE AREAS SHOULD CONTINUE TO MONITOR THE LATEST RIVER FORECASTS OR STATEMENTS FOR UPDATED INFORMATION. $$ SHEA/BEACHLER |