546
WWUS43 KLOT 300248
WSWLOT
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
848 PM CST THU JAN 29 2026
INZ001-002-301300-
/O.UPG.KLOT.WS.A.0001.260130T2100Z-260201T0000Z/
/O.NEW.KLOT.WS.W.0003.260130T2100Z-260201T0000Z/
LAKE IN-PORTER-
INCLUDING THE CITIES OF VALPARAISO, PORTAGE, CHESTERTON,
MERRILLVILLE, GARY, AND HAMMOND
848 PM CST THU JAN 29 2026
...WINTER STORM WARNING IN EFFECT FROM 3 PM FRIDAY TO 6 PM CST
SATURDAY...
* WHAT...HEAVY LAKE EFFECT SNOW WITH TOTAL SNOW ACCUMULATIONS OVER 6
INCHES EXPECTED, MAINLY NEAR AND NORTH OF US ROUTE 30. ISOLATED
TOTALS UP TO A FOOT ARE POSSIBLE.
* WHERE...LAKE IN AND PORTER COUNTIES.
* WHEN...FROM 3 PM FRIDAY TO 6 PM CST SATURDAY.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT TO NEARLY IMPOSSIBLE AT
TIMES NORTH OF U.S. ROUTE 30 WITH NEAR WHITE OUT CONDITIONS AND
SNOWFALL RATES OF 2 OR MORE INCHES PER HOUR UNDER THE MOST INTENSE
PORTIONS OF THE BAND.
* ADDITIONAL DETAILS...AN INITIAL PERIOD OF ACCUMULATING SNOW IS
EXPECTED FRIDAY MORNING. HOWEVER, THE MAIN WINDOW FOR THE HEAVIEST
SNOWFALL IS EXPECTED FRIDAY EVENING THROUGH SATURDAY MORNING. SOME
BREAKS IN THE SNOWFALL ARE POSSIBLE AT TIMES AS THE SNOW BAND MAY
WOBBLE FRIDAY NIGHT AND SATURDAY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DURING LAKE EFFECT SNOW, THE WEATHER CAN VARY FROM NEAR WHITE OUT
CONDITIONS IN VERY HEAVY SNOW TO DRY WEATHER JUST A FEW MILES AWAY.
BE PREPARED FOR RAPID CHANGES IN WEATHER, VISIBILITY, AND ROAD
CONDITIONS.
MONITOR THE LATEST FORECASTS FOR UPDATES ON THIS SITUATION.
ILZ104-105-301300-
/O.CON.KLOT.WW.Y.0006.260130T1500Z-260130T2100Z/
/O.CON.KLOT.WS.A.0001.260130T2100Z-260131T0600Z/
CENTRAL COOK-SOUTHERN COOK-
INCLUDING THE CITIES OF PARK FOREST, ORLAND PARK, LA GRANGE,
CHICAGO, CALUMET CITY, CICERO, OAK LAWN, LEMONT, OAK PARK, AND
OAK FOREST
848 PM CST THU JAN 29 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 AM TO 3 PM CST
FRIDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON
THROUGH FRIDAY EVENING...
* WHAT...FOR THE WINTER WEATHER ADVISORY, SNOW EXPECTED. TOTAL SNOW
ACCUMULATIONS UP TO ONE INCH. FOR THE WINTER STORM WATCH, HEAVY
LAKE EFFECT SNOW POSSIBLE. TOTAL SNOW ACCUMULATIONS UP TO 3 INCHES
POSSIBLE.
* WHERE...CENTRAL COOK AND SOUTHERN COOK COUNTIES.
* WHEN...FOR THE WINTER WEATHER ADVISORY, FROM 9 AM TO 3 PM CST
FRIDAY. FOR THE WINTER STORM WATCH, FROM FRIDAY AFTERNOON THROUGH
FRIDAY EVENING.
* IMPACTS...ROADS, AND ESPECIALLY BRIDGES AND OVERPASSES, WILL
LIKELY BECOME SLICK AND HAZARDOUS. PLAN ON SLIPPERY ROAD
CONDITIONS. THE HAZARDOUS CONDITIONS COULD IMPACT THE FRIDAY
EVENING COMMUTE. VISIBILITIES MAY DROP BELOW 1/4 MILE DUE TO
FALLING AND BLOWING SNOW.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SLOW DOWN AND USE CAUTION WHILE TRAVELING. THE LATEST ROAD
CONDITIONS FOR ILLINOIS CAN BE OBTAINED AT
WWW.GETTINGAROUNDILLINOIS.COM.
MONITOR THE LATEST FORECASTS FOR UPDATES ON THIS SITUATION.
DURING LAKE EFFECT SNOW, THE WEATHER CAN VARY FROM BANDS OF LOCALLY
HEAVY SNOW TO DRY WEATHER JUST A FEW MILES AWAY. VISIBILITIES CAN
ALSO VARY GREATLY. BE PREPARED FOR RAPID CHANGES IN WEATHER,
VISIBILITY, AND ROAD CONDITIONS.
ILZ006-013-103-301300-
/O.CON.KLOT.WW.Y.0006.260130T1500Z-260130T2100Z/
LAKE IL-DUPAGE-NORTHERN COOK-
INCLUDING THE CITIES OF LOMBARD, PALATINE, DES PLAINES, BUFFALO
GROVE, NAPERVILLE, WHEATON, WAUKEGAN, DOWNERS GROVE, NORTHBROOK,
CAROL STREAM, GURNEE, MUNDELEIN, SCHAUMBURG, AND EVANSTON
848 PM CST THU JAN 29 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 AM TO 3 PM CST
FRIDAY...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS UP TO ONE INCH.
* WHERE...DUPAGE, LAKE IL, AND NORTHERN COOK COUNTIES.
* WHEN...FROM 9 AM TO 3 PM CST FRIDAY.
* IMPACTS...ROADS, AND ESPECIALLY BRIDGES AND OVERPASSES, WILL
LIKELY BECOME SLICK AND HAZARDOUS. PLAN ON SLIPPERY ROAD
CONDITIONS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SLOW DOWN AND USE CAUTION WHILE TRAVELING. THE LATEST ROAD
CONDITIONS FOR ILLINOIS CAN BE OBTAINED AT
WWW.GETTINGAROUNDILLINOIS.COM.
IZZI
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