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Home Return to list Small Craft Advisory 0101 Issued by the Green Bay Forecast Office
Action: New Issued At: 2025-12-19 14:16:53 643 WHUS73 KGRB 192016 MWWGRB URGENT - MARINE WEATHER MESSAGE National Weather Service Green Bay WI 216 PM CST Fri Dec 19 2025 LMZ521-522-541>543-200430- /O.EXP.KGRB.SC.Y.0100.000000T0000Z-251219T2000Z/ /O.NEW.KGRB.SC.Y.0101.251220T0600Z-251220T2100Z/ /O.UPG.KGRB.GL.A.0008.251220T2100Z-251221T0600Z/ /O.NEW.KGRB.GL.W.0021.251220T2100Z-251221T0600Z/ Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI- Green Bay south of line from Oconto WI to Little Sturgeon Bay WI- Rock Island Passage to Sturgeon Bay WI- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 216 PM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST SATURDAY... ...GALE WARNING IN EFFECT FROM 3 PM SATURDAY TO MIDNIGHT CST SATURDAY NIGHT... ...SMALL CRAFT ADVISORY FOR EARLY THIS AFTERNOON HAS EXPIRED... * WHAT...For the Small Craft Advisory, southwest winds 15 to 25 kts with a few gusts up to 35 kts and waves 4 to 7 ft expected. For the Gale Warning, west winds 20 to 30 kt with gusts up to 35 kts and waves 2 to 5 ft expected. * WHERE...Lake Michigan nearshore waters from Washington Island to Sheboygan, and Central and Southern Bay of Green Bay. * WHEN...For the Small Craft Advisory, from midnight tonight to 3 PM CST Saturday. For the Gale Warning, from 3 PM Saturday to midnight CST Saturday night. * 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. && $$ Action: Continued Issued At: 2025-12-19 20:53:33 925 WHUS73 KGRB 200253 MWWGRB URGENT - MARINE WEATHER MESSAGE National Weather Service Green Bay WI 853 PM CST Fri Dec 19 2025 LMZ521-522-541>543-201200- /O.CON.KGRB.SC.Y.0101.251220T0600Z-251220T2100Z/ /O.CON.KGRB.GL.W.0021.251220T2100Z-251221T0600Z/ Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI- Green Bay south of line from Oconto WI to Little Sturgeon Bay WI- Rock Island Passage to Sturgeon Bay WI- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 853 PM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST SATURDAY... ...GALE WARNING REMAINS IN EFFECT FROM 3 PM SATURDAY TO MIDNIGHT CST SATURDAY NIGHT... * WHAT...For the Small Craft Advisory, southwest winds 15 to 25 kts with a few gusts up to 35 kts and waves 4 to 7 ft expected. For the Gale Warning, west winds 20 to 30 kt with gusts up to 35 kts and waves 2 to 5 ft expected. * WHERE...Lake Michigan nearshore waters from Washington Island to Sheboygan, and Central and Southern Bay of Green Bay. * WHEN...For the Small Craft Advisory, from midnight tonight to 3 PM CST Saturday. For the Gale Warning, from 3 PM Saturday to midnight CST Saturday night. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ JLA Action: Continued Issued At: 2025-12-20 03:33:03 651 WHUS73 KGRB 200932 MWWGRB URGENT - MARINE WEATHER MESSAGE National Weather Service Green Bay WI 332 AM CST Sat Dec 20 2025 LMZ521-522-541>543-201745- /O.CON.KGRB.SC.Y.0101.000000T0000Z-251220T2100Z/ /O.CON.KGRB.GL.W.0021.251220T2100Z-251221T0600Z/ Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI- Green Bay south of line from Oconto WI to Little Sturgeon Bay WI- Rock Island Passage to Sturgeon Bay WI- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 332 AM CST Sat Dec 20 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS AFTERNOON... ...GALE WARNING REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO MIDNIGHT CST TONIGHT... * WHAT...For the Small Craft Advisory, south to southwest winds 15 to 25 kts with a few gusts up to 35 kts and waves of 3 to 6 ft on the bay and 6 to 12 feet on Lake Michigan expected. For the Gale Warning, west winds 20 to 30 kt with gusts up to 40 kts and waves 2 to 6 ft expected. * WHERE...Lake Michigan nearshore waters from Washington Island to Sheboygan, and Central and Southern Bay of Green Bay. * WHEN...For the Small Craft Advisory, until 3 PM CST this afternoon. For the Gale Warning, from 3 PM this afternoon to midnight CST tonight. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. Freezing spray also possible. 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. && $$ Action: Continued Issued At: 2025-12-20 10:05:16 366 WHUS73 KGRB 201604 MWWGRB URGENT - MARINE WEATHER MESSAGE National Weather Service Green Bay WI 1004 AM CST Sat Dec 20 2025 LMZ521-522-541>543-210015- /O.CON.KGRB.SC.Y.0101.000000T0000Z-251220T2100Z/ /O.CON.KGRB.GL.W.0021.251220T2100Z-251221T0600Z/ Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI- Green Bay south of line from Oconto WI to Little Sturgeon Bay WI- Rock Island Passage to Sturgeon Bay WI- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 1004 AM CST Sat Dec 20 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS AFTERNOON... ...GALE WARNING REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO MIDNIGHT CST TONIGHT... * WHAT...For the Small Craft Advisory, west winds 15 to 25 kt with gusts up to 35 kt and waves 3 to 6 ft. For the Gale Warning, west winds 20 to 30 kt with gusts up to 40 kt and waves 2 to 5 ft expected. * WHERE...Lake Michigan nearshore waters from Washington Island to Sheboygan, and Central and Southern Bay of Green Bay. * WHEN...For the Small Craft Advisory, until 3 PM CST this afternoon. For the Gale Warning, from 3 PM this afternoon to midnight CST tonight. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. Freezing spray also possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2025-12-20 14:19:38 663 WHUS73 KGRB 202019 MWWGRB URGENT - MARINE WEATHER MESSAGE National Weather Service Green Bay WI 219 PM CST Sat Dec 20 2025 LMZ521-522-541>543-210430- /O.CON.KGRB.SC.Y.0101.000000T0000Z-251220T2100Z/ /O.CON.KGRB.GL.W.0021.251220T2100Z-251221T0600Z/ /O.NEW.KGRB.SC.Y.0102.251221T0600Z-251221T1200Z/ Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI- Green Bay south of line from Oconto WI to Little Sturgeon Bay WI- Rock Island Passage to Sturgeon Bay WI- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 219 PM CST Sat Dec 20 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS AFTERNOON... ...GALE WARNING REMAINS IN EFFECT FROM 3 PM UNTIL MIDNIGHT CST TONIGHT... ...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 AM CST SUNDAY... * WHAT...For the first Small Craft Advisory, west winds 20 to 25 kt with gusts up to 35 kt and waves 2 to 5 ft. For the Gale Warning, west winds 20 to 30 kt with gusts up to 40 kt and waves 3 to 6 ft expected. For the second Small Craft Advisory, west winds 15 to 25 kt with gusts up to 30 kt and waves 1 to 4 ft expected. * WHERE...Lake Michigan nearshore waters from Washington Island to Sheboygan, and Central and Southern Bay of Green Bay. * WHEN...For the first Small Craft Advisory, until 3 PM CST this afternoon. For the Gale Warning, until midnight CST tonight. For the second Small Craft Advisory, from midnight tonight to 6 AM CST Sunday. * 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. && $$ Action: Expired Issued At: 2025-12-20 15:06:24 755 WHUS73 KGRB 202106 MWWGRB URGENT - MARINE WEATHER MESSAGE National Weather Service Green Bay WI 306 PM CST Sat Dec 20 2025 LMZ521-522-541>543-210515- /O.EXP.KGRB.SC.Y.0101.000000T0000Z-251220T2100Z/ /O.CON.KGRB.GL.W.0021.000000T0000Z-251221T0600Z/ /O.CON.KGRB.SC.Y.0102.251221T0600Z-251221T1200Z/ Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI- Green Bay south of line from Oconto WI to Little Sturgeon Bay WI- Rock Island Passage to Sturgeon Bay WI- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 306 PM CST Sat Dec 20 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 AM CST SUNDAY... * WHAT...For the Gale Warning, west winds 20 to 30 kt with gusts up to around 45 kt through early this evening easing back to 35 kt during the evening and waves 3 to 6 ft in ice free areas. For the Small Craft Advisory, west winds 15 to 25 kt with gusts up to 30 kt and waves 2 to 4 ft expected in ice free areas. * WHERE...Lake Michigan nearshore waters from Washington Island to Sheboygan, and Central and Southern Bay of Green Bay. * WHEN...For the Gale Warning, until midnight CST tonight. For the Small Craft Advisory, from midnight tonight to 6 AM CST Sunday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||