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Home Return to list Winter Weather Advisory 0009 Issued by the Chicago Forecast Office
Action: New Issued At: 2026-02-21 13:02:51 072 WWUS43 KLOT 211902 WSWLOT URGENT - WINTER WEATHER MESSAGE National Weather Service Chicago IL 102 PM CST Sat Feb 21 2026 INZ002-220515- /O.NEW.KLOT.WW.Y.0009.260222T0600Z-260223T1800Z/ Porter- Including the cities of Valparaiso, Portage, and Chesterton 102 PM CST Sat Feb 21 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO NOON CST MONDAY... * WHAT...Lake effect snow expected. Total snow accumulations between 2 and 5 inches, with locally higher amounts possible mainly east of State Road 49 and north of US Route 30. Some blowing and drifting snow is possible Sunday night into Monday. * WHERE...Porter County. The highest totals are expected across the northeast half of the county. * WHEN...From midnight tonight to noon CST Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. The hazardous conditions are expected to impact the Monday morning commute. * ADDITIONAL DETAILS...A period of snow with some lake enhancement will develop late tonight through Sunday morning. A brief lull in snowfall may occur towards midday Sunday before another round of lake effect snow develops Sunday afternoon and evening through Monday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Indiana can be obtained at https://511in.org. && $$ Action: Continued Issued At: 2026-02-21 21:13:13 116 WWUS43 KLOT 220312 WSWLOT URGENT - WINTER WEATHER MESSAGE National Weather Service Chicago IL 912 PM CST Sat Feb 21 2026 INZ002-221315- /O.CON.KLOT.WW.Y.0009.260222T0600Z-260223T1800Z/ Porter- Including the cities of Portage, Chesterton, and Valparaiso 912 PM CST Sat Feb 21 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO NOON CST MONDAY... * WHAT...Lake effect snow expected. Total snow accumulations between 2 and 5 inches, with locally higher amounts possible mainly east of State Road 49 and north of US Route 30. Some blowing and drifting snow is possible Sunday night into Monday. * WHERE...Porter County. * WHEN...Until noon CST Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. The hazardous conditions are expected to impact the Monday morning commute. * ADDITIONAL DETAILS...A brief lull in snowfall may occur midday Sunday before another round of lake effect snow develops Sunday afternoon and evening through Monday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Indiana can be obtained at https://511in.org. && $$ Petr Action: Continued Issued At: 2026-02-22 03:52:04 722 WWUS43 KLOT 220951 WSWLOT URGENT - WINTER WEATHER MESSAGE National Weather Service Chicago IL 351 AM CST Sun Feb 22 2026 INZ002-222000- /O.CON.KLOT.WW.Y.0009.000000T0000Z-260223T1800Z/ Porter- Including the cities of Portage, Valparaiso, and Chesterton 351 AM CST Sun Feb 22 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST MONDAY... * WHAT...Lake effect snow expected. Total snow accumulations between 2 and 5 inches, with locally higher amounts possible mainly east of State Road 49 and north of US Route 30. Some blowing and drifting snow is possible Sunday night into Monday. * WHERE...Porter County. * WHEN...Until noon CST Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. The hazardous conditions are expected to impact the Monday morning commute. * ADDITIONAL DETAILS...A brief lull in snowfall may occur Sunday morning before another round of lake effect snow develops Sunday afternoon and evening through Monday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Indiana can be obtained at https://511in.org. 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. && $$ Doom Action: Continued Issued At: 2026-02-22 10:26:49 485 WWUS43 KLOT 221626 WSWLOT URGENT - WINTER WEATHER MESSAGE National Weather Service Chicago IL 1026 AM CST Sun Feb 22 2026 INZ002-230230- /O.CON.KLOT.WW.Y.0009.000000T0000Z-260223T1800Z/ Porter- Including the cities of Valparaiso, Chesterton, and Portage 1026 AM CST Sun Feb 22 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST MONDAY... * WHAT...Lake effect snow causing localized hazardous travel. Additional snow accumulations in the most persistent snow showers between 2 and 4 inches, with locally higher amounts possible mainly east of State Road 49 and north of US Route 30. Winds gusting as high as 35 to 40 mph near the lakeshore. Some blowing and drifting snow is possible tonight into Monday. * WHERE...Porter County. * WHEN...Until noon CST Monday. * IMPACTS...Roads, and especially bridges and overpasses, will be slick and hazardous in spots. The hazardous conditions are expected to impact the Monday morning commute. * ADDITIONAL DETAILS...The worst conditions are expected to occur this evening into Monday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Indiana can be obtained at https://511in.org. During lake effect snow, the weather can vary from bands of moderate to locally heavy snow to dry weather just a few miles away. Visibilities can also vary greatly. Be prepared for rapid changes in weather, visibility, and road conditions. && $$ RC Action: Continued Issued At: 2026-02-22 15:28:26 597 WWUS43 KLOT 222128 WSWLOT URGENT - WINTER WEATHER MESSAGE National Weather Service Chicago IL 328 PM CST Sun Feb 22 2026 INZ002-230730- /O.CON.KLOT.WW.Y.0009.000000T0000Z-260223T1800Z/ Porter- Including the cities of Portage, Valparaiso, and Chesterton 328 PM CST Sun Feb 22 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST MONDAY... * WHAT...Lake effect snow causing localized hazardous travel. Additional snow accumulations in the most persistent snow showers between 2 and 4 inches, with locally higher amounts possible mainly east of State Road 49 and north of US Route 30. Winds gusting as high as 35 to 40 mph near the lakeshore. Some blowing and drifting snow is possible tonight into Monday. * WHERE...Porter County. * WHEN...Until noon CST Monday. * IMPACTS...Roads, and especially bridges and overpasses, will be slick and hazardous in spots. The hazardous conditions are expected to impact the Monday morning commute. * ADDITIONAL DETAILS...The worst conditions are expected to occur this evening into Monday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Indiana can be obtained at https://511in.org. 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. && $$ Action: Continued Issued At: 2026-02-22 21:51:08 487 WWUS43 KLOT 230351 WSWLOT URGENT - WINTER WEATHER MESSAGE National Weather Service Chicago IL 951 PM CST Sun Feb 22 2026 INZ002-231400- /O.CON.KLOT.WW.Y.0009.000000T0000Z-260223T1800Z/ Porter- Including the cities of Valparaiso, Chesterton, and Portage 951 PM CST Sun Feb 22 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST MONDAY... * WHAT...Lake effect snow causing localized hazardous travel. Additional snow accumulations in the most persistent snow showers between 2 and 4 inches, with locally higher amounts possible mainly east of State Road 49 and north of US Route 30. Winds gusting as high as 35 to 40 mph near the lakeshore. Some blowing and drifting snow is possible. * WHERE...Porter County. * WHEN...Until noon CST Monday. * IMPACTS...Roads, and especially bridges and overpasses, will be slick and hazardous in spots. The hazardous conditions are expected to impact the Monday morning commute. * ADDITIONAL DETAILS...The worst conditions are expected to occur overnight into Monday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Indiana can be obtained at https://511in.org. During lake effect snow, the weather can vary from bands of locally heavy snow to dry weather just a few miles away. Visibilities can also vary greatly. Be prepared for rapid changes in weather, visibility, and road conditions. && $$ Action: Time Extended Issued At: 2026-02-23 02:38:45 482 WWUS43 KLOT 230838 WSWLOT URGENT - WINTER WEATHER MESSAGE National Weather Service Chicago IL 238 AM CST Mon Feb 23 2026 INZ002-231845- /O.EXT.KLOT.WW.Y.0009.000000T0000Z-260224T0000Z/ Porter- Including the cities of Chesterton, Valparaiso, and Portage 238 AM CST Mon Feb 23 2026 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...Lake effect snow causing localized hazardous travel. Additional snow accumulations in the most persistent snow showers between 2 and 4 inches, with locally higher amounts possible mainly east of State Road 49 and north of US Route 30. Winds gusting as high as 35 to 40 mph near the lakeshore. Some blowing and drifting snow is possible. * WHERE...Porter County. * WHEN...Until 6 PM CST this evening. * IMPACTS...Roads, and especially bridges and overpasses, will be slick and hazardous in spots. The hazardous conditions are expected to impact the Monday morning commute. * ADDITIONAL DETAILS...The worst conditions are expected to occur this morning into early this afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Indiana can be obtained at https://511in.org. During lake effect snow, the weather can vary from bands of moderate to 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. && $$ Ratzer Action: Continued Issued At: 2026-02-23 10:14:47 281 WWUS43 KLOT 231614 WSWLOT URGENT - WINTER WEATHER MESSAGE National Weather Service Chicago IL 1014 AM CST Mon Feb 23 2026 INZ002-240000- /O.CON.KLOT.WW.Y.0009.000000T0000Z-260224T0000Z/ Porter- Including the cities of Portage, Valparaiso, and Chesterton 1014 AM CST Mon Feb 23 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...Lake effect snow showers. Additional snow accumulations of an inch or two possible, mainly near the lake. Winds gusting as high as 35 mph near the lake. * WHERE...Porter County. * WHEN...Until 6 PM CST this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Indiana can be obtained at https://511in.org. During lake effect snow, the weather can vary from bands of locally heavier snow showers to dry weather just a few miles away. Visibilities can also vary greatly. Be prepared for rapid changes in weather, visibility, and road conditions. && $$ - Izzi Action: Cancelled Issued At: 2026-02-23 13:16:51 331 WWUS43 KLOT 231916 WSWLOT URGENT - WINTER WEATHER MESSAGE National Weather Service Chicago IL 116 PM CST Mon Feb 23 2026 INZ002-232030- /O.CAN.KLOT.WW.Y.0009.000000T0000Z-260224T0000Z/ Porter- Including the cities of Portage, Valparaiso, and Chesterton 116 PM CST Mon Feb 23 2026 ...WINTER WEATHER ADVISORY IS CANCELLED... While flurries and brief light snow showers will remain possible the rest of the afternoon. No significant additional accumulation is expected. $$ - Izzi | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||