IEM VTEC Product Browser
This application allows easy navigation of National Weather Service issued products with Valid Time Event Coding (VTEC).
13 Nov 2024 Update: The tool was updated to use non-hash link style URLs. A shim is in place to translate the old URLs to the new ones, so nothing should be broken (famous last words). This was done to allow the HTML5 History API to provide a better user experience.
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2025 [KLOT] CHICAGO Gale (GL) Warning (W) Number 12
Listing of Counties/Parishes/Zones Included in Product
RADAR Composite at Issuance Time
Storm Based Warning History
800 WHUS73 KLOT 280313 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 1013 PM CDT Thu Mar 27 2025 LMZ740>745-281115- /O.UPG.KLOT.GL.A.0010.250328T1800Z-250329T0800Z/ /O.NEW.KLOT.GL.W.0012.250328T1800Z-250329T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 1013 PM CDT Thu Mar 27 2025 ...GALE WARNING IN EFFECT FROM 1 PM FRIDAY TO 3 AM CDT SATURDAY... * WHAT...Southwest gales to 35 kt and significant waves to 5 ft expected. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...From 1 PM Friday to 3 AM CDT Saturday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$
764 WHUS73 KLOT 280837 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 337 AM CDT Fri Mar 28 2025 LMZ740>745-281645- /O.CON.KLOT.GL.W.0012.250328T1800Z-250329T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 337 AM CDT Fri Mar 28 2025 ...GALE WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 3 AM CDT SATURDAY... * WHAT...Southwest gales to 35 kt and significant waves to 5 ft expected. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...From 1 PM this afternoon to 3 AM CDT Saturday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$
937 WHUS73 KLOT 281443 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 943 AM CDT Fri Mar 28 2025 LMZ740>745-282245- /O.CON.KLOT.GL.W.0012.250328T1800Z-250329T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 943 AM CDT Fri Mar 28 2025 ...GALE WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 3 AM CDT SATURDAY... * WHAT...Southwest gales to 35 kt and significant waves to 5 ft expected. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...From 1 PM this afternoon to 3 AM CDT Saturday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$
633 WHUS73 KLOT 281959 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 259 PM CDT Fri Mar 28 2025 LMZ740>745-290400- /O.CON.KLOT.GL.W.0012.000000T0000Z-250329T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 259 PM CDT Fri Mar 28 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM CDT SATURDAY... * WHAT...Southwest winds to 35 kt and significant waves to 5 ft. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...Until 3 AM CDT Saturday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$
552 WHUS73 KLOT 290226 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 926 PM CDT Fri Mar 28 2025 LMZ740>745-290800- /O.CON.KLOT.GL.W.0012.000000T0000Z-250329T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 926 PM CDT Fri Mar 28 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM CDT SATURDAY... * WHAT...Southwest gales to 40 kt and significant waves to 4 ft. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...Until 3 AM CDT Saturday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$
242 WHUS73 KLOT 290756 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 256 AM CDT Sat Mar 29 2025 LMZ740>742-291500- /O.EXP.KLOT.GL.W.0012.000000T0000Z-250329T0800Z/ /O.NEW.KLOT.SC.Y.0039.250329T0800Z-250329T1500Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 256 AM CDT Sat Mar 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... * WHAT...Southwest winds to 30 kt and significant waves to 5 ft. Occasional gale gusts to 35 kt early this morning. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-291600- /O.EXP.KLOT.GL.W.0012.000000T0000Z-250329T0800Z/ /O.NEW.KLOT.SC.Y.0039.250329T0800Z-250329T2100Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 256 AM CDT Sat Mar 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON... * WHAT...Southwest winds to 30 kt and significant waves to 5 ft. Occasional gale gusts to 35 kt early this morning. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 4 PM CDT this afternoon. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$
Permalink to 202503280313-KLOT-WHUS73-MWWLOT
800 WHUS73 KLOT 280313 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 1013 PM CDT Thu Mar 27 2025 LMZ740>745-281115- /O.UPG.KLOT.GL.A.0010.250328T1800Z-250329T0800Z/ /O.NEW.KLOT.GL.W.0012.250328T1800Z-250329T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 1013 PM CDT Thu Mar 27 2025 ...GALE WARNING IN EFFECT FROM 1 PM FRIDAY TO 3 AM CDT SATURDAY... * WHAT...Southwest gales to 35 kt and significant waves to 5 ft expected. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...From 1 PM Friday to 3 AM CDT Saturday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$
Permalink to 202503280837-KLOT-WHUS73-MWWLOT
764 WHUS73 KLOT 280837 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 337 AM CDT Fri Mar 28 2025 LMZ740>745-281645- /O.CON.KLOT.GL.W.0012.250328T1800Z-250329T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 337 AM CDT Fri Mar 28 2025 ...GALE WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 3 AM CDT SATURDAY... * WHAT...Southwest gales to 35 kt and significant waves to 5 ft expected. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...From 1 PM this afternoon to 3 AM CDT Saturday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$
Permalink to 202503281443-KLOT-WHUS73-MWWLOT
937 WHUS73 KLOT 281443 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 943 AM CDT Fri Mar 28 2025 LMZ740>745-282245- /O.CON.KLOT.GL.W.0012.250328T1800Z-250329T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 943 AM CDT Fri Mar 28 2025 ...GALE WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 3 AM CDT SATURDAY... * WHAT...Southwest gales to 35 kt and significant waves to 5 ft expected. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...From 1 PM this afternoon to 3 AM CDT Saturday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$
Permalink to 202503281959-KLOT-WHUS73-MWWLOT
633 WHUS73 KLOT 281959 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 259 PM CDT Fri Mar 28 2025 LMZ740>745-290400- /O.CON.KLOT.GL.W.0012.000000T0000Z-250329T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 259 PM CDT Fri Mar 28 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM CDT SATURDAY... * WHAT...Southwest winds to 35 kt and significant waves to 5 ft. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...Until 3 AM CDT Saturday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$
Permalink to 202503290226-KLOT-WHUS73-MWWLOT
552 WHUS73 KLOT 290226 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 926 PM CDT Fri Mar 28 2025 LMZ740>745-290800- /O.CON.KLOT.GL.W.0012.000000T0000Z-250329T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 926 PM CDT Fri Mar 28 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM CDT SATURDAY... * WHAT...Southwest gales to 40 kt and significant waves to 4 ft. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...Until 3 AM CDT Saturday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$
Permalink to 202503290756-KLOT-WHUS73-MWWLOT
242 WHUS73 KLOT 290756 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 256 AM CDT Sat Mar 29 2025 LMZ740>742-291500- /O.EXP.KLOT.GL.W.0012.000000T0000Z-250329T0800Z/ /O.NEW.KLOT.SC.Y.0039.250329T0800Z-250329T1500Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 256 AM CDT Sat Mar 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... * WHAT...Southwest winds to 30 kt and significant waves to 5 ft. Occasional gale gusts to 35 kt early this morning. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-291600- /O.EXP.KLOT.GL.W.0012.000000T0000Z-250329T0800Z/ /O.NEW.KLOT.SC.Y.0039.250329T0800Z-250329T2100Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 256 AM CDT Sat Mar 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON... * WHAT...Southwest winds to 30 kt and significant waves to 5 ft. Occasional gale gusts to 35 kt early this morning. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 4 PM CDT this afternoon. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$
All Storm Reports within Event Political Coverage
Storm Reports within Product Polygon
This table lists other events issued by the selected office for the selected year. Click on the row to select that event.