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ICAO Used: KMDW

Special Weather Statements

HAZARDOUS WEATHER OUTLOOK
Issue Date: 517 PM CDT SUN SEP 5 2010
Expiration: 530 PM CDT MON SEP 06 2010
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...TONIGHT.

WEATHER HAZARDS EXPECTED:

THUNDERSTORMS...THE STRONGEST WHICH MAY PRODUCE:
OCCASIONAL CLOUD TO GROUND LIGHTNING.
BRIEF DOWNPOURS.

AREAS AFFECTED AND TIMING:

ISOLATED THUNDERSTORMS ARE EXPECTED TO SLOWLY APPROACH THE AREA
FROM THE WEST...BUT REMAIN NORTH OF I-88. THIS ACTIVITY WILL
CONTINUE TO PUSH EAST AND COULD REACH THE CITY OF CHICAGO THIS
EVENING.

DISCUSSION:

WEAK SHOWERS AND ISOLATED THUNDER ARE SLOWLY ADVANCING FROM THE
WEST THIS EVENING...IN A NARROW BAND STRETCHING FROM WINSLOW
ILLINOIS SOUTHEAST TO DAVIS JUNCTION. SATELLITE IMAGERY SHOWS
CLOUD TOPS CONTINUING TO COOL...BUT ONLY REACH 30 OR SO KFT.
THESE STORMS ARE NOT EXPECTED TO BECOME SEVERE...BUT CAUTION
SHOULD BE EXERCISED IN THE VICINITY OF ANY THUNDERSTORM.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

THERE IS A SLIGHT CHANCE OF THUNDERSTORMS MONDAY NIGHT.

VERY WINDY CONDITIONS ARE EXPECTED ON TUESDAY BEHIND A COLD FRONT
WHEN SOUTHWEST WINDS MAY GUST AS HIGH AS 35 MPH.

THERE IS ANOTHER CHANCE OF THUNDERSTORMS THURSDAY NIGHT THROUGH
SATURDAY.

THERE WILL BE A THREAT OF MODERATE RIP CURRENTS MONDAY MORNING
THROUGH WEDNESDAY MORNING.

THERE WILL BE SOME FIRE WEATHER DANGER MONDAY AFTERNOON AND
EVENING AS THE HUMIDITY AND WIND MAY REACH RED FLAG WARNING
CRITERIA.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO


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River Levels

Des Plaines River
 Des Plaines - Gauge DSPI20.89 ftNormal
 Riverside - Gauge RVRI23.41 ftNormal
 
Little Calumet River
 South Holland - Gauge SHLI25.59 ftNormal

More Rivers and Lakes Info

Data provided by NOAA Advanced Hydrologic Prediction Service