Alert archive / Michigan / Small Craft Advisories in 2021
Small Craft Advisory 73, NWS Detroit, MI
NWS Detroit, MI issued this small craft advisory at Nov 20, 2021, 3:44 PM EST. It took effect at Nov 21, 2021, 7:00 PM EST. It was in force for 21 hr.
The area
The counties it named.
The facts
- Issued
- Nov 20, 2021, 3:44 PM EST (20:44 UTC)
- In effect from
- Nov 21, 2021, 7:00 PM EST
- Expired
- Nov 22, 2021, 4:00 PM EST
- In force
- 21 hr
- Issued by
- NWS Detroit, MI
The text
As transmitted.
298 WHUS73 KDTX 202044 MWWDTX URGENT - MARINE WEATHER MESSAGE National Weather Service Detroit/Pontiac MI 344 PM EST Sat Nov 20 2021 LHZ421-441-442-210900- /O.EXP.KDTX.SC.Y.0072.000000T0000Z-211120T2100Z/ /O.UPG.KDTX.GL.A.0014.211121T2100Z-211122T1500Z/ /O.NEW.KDTX.GL.W.0018.211122T0000Z-211122T1500Z/ Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay-Port Austin to Harbor Beach MI- Harbor Beach to Port Sanilac MI- 344 PM EST Sat Nov 20 2021 ...GALE WARNING IN EFFECT FROM 7 PM SUNDAY TO 10 AM EST MONDAY... ...SMALL CRAFT ADVISORY WILL EXPIRE AT 4 PM EST THIS AFTERNOON... * WHAT...Expect sustained winds up to 24 knots from the west with gusts up to 35 knots. The largest significant waves will be 5 feet with a potential maximum wave height of 7 feet. * WHERE...Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay, Port Austin to Harbor Beach MI and Harbor Beach to Port Sanilac MI. * WHEN...The maximum winds are expected around 10 PM EST Sunday with the largest waves expected around 12 AM EST Monday. * 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 severe conditions. && $$ LHZ361>363-210900- /O.UPG.KDTX.GL.A.0014.211121T2100Z-211122T1500Z/ /O.NEW.KDTX.GL.W.0018.211121T2100Z-211122T1500Z/ Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore- Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore- Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore- 344 PM EST Sat Nov 20 2021 ...GALE WARNING IN EFFECT FROM 4 PM SUNDAY TO 10 AM EST MONDAY... * WHAT...Expect sustained winds up to 30 knots from the west with gusts up to 41 knots. The largest significant waves will be 11 feet with a potential maximum wave height of 16 feet. * WHERE...Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore, Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore and Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore. * WHEN...The maximum winds are expected around 11 PM EST Sunday with the largest waves expected around 4 AM EST Monday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. && $$ LHZ422-443-462>464-210900- /O.UPG.KDTX.GL.A.0014.211121T2100Z-211122T1500Z/ /O.NEW.KDTX.GL.W.0018.211122T0000Z-211122T1500Z/ Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- Port Sanilac to Port Huron MI- Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore- Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore- Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore- 344 PM EST Sat Nov 20 2021 ...GALE WARNING IN EFFECT FROM 7 PM SUNDAY TO 10 AM EST MONDAY... * WHAT...Expect sustained winds up to 27 knots from the west with gusts up to 36 knots. The largest significant waves will be 8 feet with a potential maximum wave height of 11 feet. * WHERE...Inner Saginaw Bay SW of Point Au Gres to Bay Port MI, Port Sanilac to Port Huron MI, Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore, Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore and Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore. * WHEN...The maximum winds are expected around 11 PM EST Sunday with the largest waves expected around 3 AM EST Monday. * 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 severe conditions. && $$ LCZ460-LEZ444-210900- /O.NEW.KDTX.SC.Y.0073.211122T0000Z-211122T1500Z/ Lake St Clair- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 344 PM EST Sat Nov 20 2021 ...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM SUNDAY TO 10 AM EST MONDAY... * WHAT...Expect sustained winds up to 20 knots from the west with gusts up to 31 knots. The largest significant waves will be 2 feet with a potential maximum wave height of 3 feet. * WHERE...In Lake St Clair, Lake St Clair. In Lake Erie, Michigan Waters of Lake Erie from Detroit River to North Cape MI. * WHEN...The maximum winds are expected around 10 PM EST Sunday with the largest waves expected around 8 PM EST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ IRL
7 follow-up statements
718 WHUS73 KDTX 210156 MWWDTX URGENT - MARINE WEATHER MESSAGE National Weather Service Detroit/Pontiac MI 856 PM EST Sat Nov 20 2021 LHZ361>363-210900- /O.CON.KDTX.GL.W.0018.211121T2100Z-211122T1500Z/ Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore- Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore- Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore- 856 PM EST Sat Nov 20 2021 ...GALE WARNING REMAINS IN EFFECT FROM 4 PM SUNDAY TO 10 AM EST MONDAY... * WHAT...Expect sustained winds up to 30 knots from the west with gusts up to 41 knots. The largest significant waves will be 11 feet with a potential maximum wave height of 16 feet. * WHERE...Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore, Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore and Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore. * WHEN...The maximum winds are expected around 11 PM EST Sunday with the largest waves expected around 4 AM EST Monday. * 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 severe conditions. && $$ LHZ421-422-441>443-462>464-210900- /O.CON.KDTX.GL.W.0018.211122T0000Z-211122T1500Z/ Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI- Port Sanilac to Port Huron MI- Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore- Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore- Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore- 856 PM EST Sat Nov 20 2021 ...GALE WARNING REMAINS IN EFFECT FROM 7 PM SUNDAY TO 10 AM EST MONDAY... * WHAT...Expect sustained winds up to 26 knots from the west with gusts up to 36 knots. The largest significant waves will be 7 feet with a potential maximum wave height of 10 feet. * WHERE...Portions of Lake Huron including Saginaw Bay. * WHEN...The maximum winds are expected around 11 PM EST Sunday with the largest waves expected around 3 AM EST Monday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. && $$ LCZ460-LEZ444-210900- /O.CON.KDTX.SC.Y.0073.211122T0000Z-211122T1500Z/ Lake St Clair- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 856 PM EST Sat Nov 20 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM SUNDAY TO 10 AM EST MONDAY... * WHAT...Expect sustained winds up to 20 knots from the west with gusts up to 31 knots. The largest significant waves will be 2 feet with a potential maximum wave height of 3 feet. * WHERE...In Lake St Clair, Lake St Clair. In Lake Erie, Michigan Waters of Lake Erie from Detroit River to North Cape MI. * WHEN...The maximum winds are expected around 10 PM EST Sunday with the largest waves expected around 10 PM EST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ IRL
122 WHUS73 KDTX 210842 MWWDTX URGENT - MARINE WEATHER MESSAGE National Weather Service Detroit/Pontiac MI 342 AM EST Sun Nov 21 2021 LHZ361>363-212130- /O.CON.KDTX.GL.W.0018.211121T2100Z-211122T1500Z/ Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore- Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore- Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore- 342 AM EST Sun Nov 21 2021 ...GALE WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 10 AM EST MONDAY... * WHAT...Expect sustained winds up to 31 knots from the west with gusts up to 41 knots. The largest significant waves will be 11 feet with a potential maximum wave height of 16 feet. * WHERE...Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore, Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore and Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore. * WHEN...The maximum winds are expected around 11 PM EST Sunday with the largest waves expected around 4 AM EST Monday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. && $$ LHZ421-422-441>443-462>464-212130- /O.CON.KDTX.GL.W.0018.211122T0000Z-211122T1500Z/ Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI- Port Sanilac to Port Huron MI- Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore- Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore- Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore- 342 AM EST Sun Nov 21 2021 ...GALE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 10 AM EST MONDAY... * WHAT...Expect sustained winds up to 26 knots from the west with gusts up to 36 knots. The largest significant waves will be 7 feet with a potential maximum wave height of 10 feet. * WHERE...Portions of Lake Huron. * WHEN...The maximum winds are expected around 11 PM EST Sunday with the largest waves expected around 4 AM EST Monday. * 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 severe conditions. && $$ LCZ460-LEZ444-212130- /O.CON.KDTX.SC.Y.0073.211122T0000Z-211122T1500Z/ Lake St Clair- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 342 AM EST Sun Nov 21 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 10 AM EST MONDAY... * WHAT...Expect sustained winds up to 20 knots from the west with gusts up to 31 knots. The largest significant waves will be 2 feet with a potential maximum wave height of 3 feet. * WHERE...In Lake St Clair, Lake St Clair. In Lake Erie, Michigan Waters of Lake Erie from Detroit River to North Cape MI. * WHEN...The maximum winds are expected around 10 PM EST Sunday with the largest waves expected around 8 PM EST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$
515 WHUS73 KDTX 211432 MWWDTX URGENT - MARINE WEATHER MESSAGE National Weather Service Detroit/Pontiac MI 932 AM EST Sun Nov 21 2021 LHZ361-362-220400- /O.EXT.KDTX.GL.W.0018.211121T2100Z-211122T2000Z/ Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore- Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore- 932 AM EST Sun Nov 21 2021 ...GALE WARNING NOW IN EFFECT FROM 4 PM THIS AFTERNOON TO 3 PM EST MONDAY... * WHAT...Expect sustained winds up to 31 knots from the west with gusts up to 43 knots. The largest significant waves will be 11 feet with a potential maximum wave height of 16 feet. * WHERE...Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore and Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore. * WHEN...The maximum winds are expected around 11 PM EST Sunday with the largest waves expected around 4 AM EST Monday. * 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 severe conditions. && $$ LHZ363-220400- /O.EXT.KDTX.GL.W.0018.211122T0000Z-211122T1500Z/ Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore- 932 AM EST Sun Nov 21 2021 ...GALE WARNING NOW IN EFFECT FROM 7 PM THIS EVENING TO 10 AM EST MONDAY... * WHAT...Expect sustained winds up to 29 knots from the west with gusts up to 40 knots. The largest significant waves will be 9 feet with a potential maximum wave height of 13 feet. * WHERE...Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore. * WHEN...The maximum winds are expected around 11 PM EST Sunday with the largest waves expected around 3 AM EST Monday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. && $$ LHZ421-422-441>443-462>464-220400- /O.CON.KDTX.GL.W.0018.211122T0000Z-211122T1500Z/ Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI- Port Sanilac to Port Huron MI- Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore- Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore- Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore- 932 AM EST Sun Nov 21 2021 ...GALE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 10 AM EST MONDAY... * WHAT...Expect sustained winds up to 26 knots from the west with gusts up to 38 knots. The largest significant waves will be 7 feet with a potential maximum wave height of 10 feet. * WHERE...Portions of Lake Huron. * WHEN...The maximum winds are expected around 11 PM EST Sunday with the largest waves expected around 2 AM EST Monday. * 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 severe conditions. && $$ LCZ460-LEZ444-220400- /O.CON.KDTX.SC.Y.0073.211122T0000Z-211122T1500Z/ Lake St Clair- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 932 AM EST Sun Nov 21 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 10 AM EST MONDAY... * WHAT...Expect sustained winds up to 20 knots from the west with gusts up to 33 knots. The largest significant waves will be 2 feet with a potential maximum wave height of 3 feet. * WHERE...In Lake St Clair, Lake St Clair. In Lake Erie, Michigan Waters of Lake Erie from Detroit River to North Cape MI. * WHEN...The maximum winds are expected around 10 PM EST Sunday with the largest waves expected around 9 PM EST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ sf
988 WHUS73 KDTX 212038 MWWDTX URGENT - MARINE WEATHER MESSAGE National Weather Service Detroit/Pontiac MI 338 PM EST Sun Nov 21 2021 LHZ361-362-220930- /O.CON.KDTX.GL.W.0018.211121T2100Z-211122T2000Z/ Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore- Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore- 338 PM EST Sun Nov 21 2021 ...GALE WARNING REMAINS IN EFFECT UNTIL 3 PM EST MONDAY... * WHAT...Expect sustained winds up to 31 knots from the west with gusts up to 43 knots. The largest significant waves will be 11 feet with a potential maximum wave height of 16 feet. * WHERE...Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore and Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore. * WHEN...The maximum winds are expected around 11 PM EST Sunday with the largest waves expected around 2 AM EST Monday. * 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 severe conditions. && $$ LHZ363-220930- /O.CON.KDTX.GL.W.0018.211122T0000Z-211122T1500Z/ Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore- 338 PM EST Sun Nov 21 2021 ...GALE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 10 AM EST MONDAY... * WHAT...Expect sustained winds up to 30 knots from the west with gusts up to 43 knots. The largest significant waves will be 10 feet with a potential maximum wave height of 14 feet. * WHERE...Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore. * WHEN...The maximum winds are expected around 11 PM EST Sunday with the largest waves expected around 2 AM EST Monday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. && $$ LHZ421-422-441>443-462>464-220930- /O.CON.KDTX.GL.W.0018.211122T0000Z-211122T1500Z/ Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI- Port Sanilac to Port Huron MI- Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore- Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore- Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore- 338 PM EST Sun Nov 21 2021 ...GALE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 10 AM EST MONDAY... * WHAT...Expect sustained winds up to 27 knots from the west with gusts up to 42 knots. The largest significant waves will be 7 feet with a potential maximum wave height of 10 feet. * WHERE...Portions of Lake Huron including Saginaw Bay. * WHEN...The maximum winds are expected around 8 PM EST Sunday with the largest waves expected around 1 AM EST Monday. * 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 severe conditions. && $$ LCZ460-LEZ444-220930- /O.CON.KDTX.SC.Y.0073.211122T0000Z-211122T1500Z/ Lake St Clair- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 338 PM EST Sun Nov 21 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 10 AM EST MONDAY... * WHAT...Expect sustained winds up to 27 knots from the west with gusts up to 33 knots. The largest significant waves will be 3 feet with a potential maximum wave height of 4 feet. * WHERE...In Lake St Clair, Lake St Clair. In Lake Erie, Michigan Waters of Lake Erie from Detroit River to North Cape MI. * WHEN...The maximum winds are expected around 10 PM EST Sunday with the largest waves expected around 10 PM EST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ IRL
463 WHUS73 KDTX 220827 MWWDTX URGENT - MARINE WEATHER MESSAGE National Weather Service Detroit/Pontiac MI 327 AM EST Mon Nov 22 2021 LHZ421-422-441>443-222100- /O.CAN.KDTX.GL.W.0018.000000T0000Z-211122T1500Z/ /O.EXB.KDTX.SC.Y.0073.000000T0000Z-211122T2100Z/ Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI- Port Sanilac to Port Huron MI- 327 AM EST Mon Nov 22 2021 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... ...GALE WARNING IS CANCELLED... * WHAT...Expect sustained winds up to 23 knots from the west with gusts up to 32 knots. The largest significant waves will be 4 feet with a potential maximum wave height of 5 feet. * WHERE...Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay, Inner Saginaw Bay SW of Point Au Gres to Bay Port MI, Port Austin to Harbor Beach MI, Harbor Beach to Port Sanilac MI and Port Sanilac to Port Huron MI. * WHEN...The maximum winds are expected around 3 AM EST Monday with the largest waves expected around 3 AM EST Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LHZ361-362-222100- /O.EXT.KDTX.GL.W.0018.000000T0000Z-211122T2100Z/ Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore- Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore- 327 AM EST Mon Nov 22 2021 ...GALE WARNING NOW IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... * WHAT...Expect sustained winds up to 33 knots from the west with gusts up to 42 knots. The largest significant waves will be 11 feet with a potential maximum wave height of 16 feet. * WHERE...Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore and Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore. * WHEN...The maximum winds are expected around 4 AM EST Monday with the largest waves expected around 3 AM EST Monday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. && $$ LHZ363-221500- /O.CON.KDTX.GL.W.0018.000000T0000Z-211122T1500Z/ Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore- 327 AM EST Mon Nov 22 2021 ...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM EST THIS MORNING... * WHAT...Expect sustained winds up to 29 knots from the west with gusts up to 38 knots. The largest significant waves will be 10 feet with a potential maximum wave height of 14 feet. * WHERE...Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore. * WHEN...The maximum winds are expected around 3 AM EST Monday with the largest waves expected around 3 AM EST Monday. * 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 severe conditions. && $$ LHZ462>464-221500- /O.CON.KDTX.GL.W.0018.000000T0000Z-211122T1500Z/ Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore- Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore- Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore- 327 AM EST Mon Nov 22 2021 ...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM EST THIS MORNING... * WHAT...Expect sustained winds up to 25 knots from the west with gusts up to 34 knots. The largest significant waves will be 8 feet with a potential maximum wave height of 11 feet. * WHERE...Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore, Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore and Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore. * WHEN...The maximum winds are expected around 3 AM EST Monday with the largest waves expected around 3 AM EST Monday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. && $$ LCZ460-LEZ444-221500- /O.CON.KDTX.SC.Y.0073.000000T0000Z-211122T1500Z/ Lake St Clair- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 327 AM EST Mon Nov 22 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST THIS MORNING... * WHAT...Expect sustained winds up to 17 knots from the west with gusts up to 27 knots. The largest significant waves will be 2 feet with a potential maximum wave height of 3 feet. * WHERE...In Lake St Clair, Lake St Clair. In Lake Erie, Michigan Waters of Lake Erie from Detroit River to North Cape MI. * WHEN...The maximum winds are expected around 3 AM EST Monday with the largest waves expected around 3 AM EST Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$
070 WHUS73 KDTX 221457 MWWDTX URGENT - MARINE WEATHER MESSAGE National Weather Service Detroit/Pontiac MI 957 AM EST Mon Nov 22 2021 LHZ363-221600- /O.EXP.KDTX.GL.W.0018.000000T0000Z-211122T1500Z/ Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore- 957 AM EST Mon Nov 22 2021 ...GALE WARNING WILL EXPIRE AT 10 AM EST THIS MORNING... Northeast winds will continue to weaken through the afternoon and will remain below warning criteria. Waves will diminish through the afternoon hours. $$ LHZ462>464-221600- /O.EXP.KDTX.GL.W.0018.000000T0000Z-211122T1500Z/ Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore- Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore- Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore- 957 AM EST Mon Nov 22 2021 ...GALE WARNING WILL EXPIRE AT 10 AM EST THIS MORNING... Northeast winds will continue to weaken through the afternoon and will remain below warning criteria. Waves will diminish through the afternoon hours. $$ LCZ460-LEZ444-221600- /O.EXP.KDTX.SC.Y.0073.000000T0000Z-211122T1500Z/ Lake St Clair- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 957 AM EST Mon Nov 22 2021 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 10 AM EST THIS MORNING... Northeast winds will continue to weaken through the afternoon and will remain below advisory criteria. Waves will diminish through the afternoon hours. $$ LHZ361-362-222100- /O.CON.KDTX.GL.W.0018.000000T0000Z-211122T2100Z/ Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore- Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore- 957 AM EST Mon Nov 22 2021 ...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... * WHAT...Expect sustained winds up to 33 knots from the west with gusts up to 42 knots. The largest significant waves will be 11 feet with a potential maximum wave height of 16 feet. * WHERE...Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore and Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore. * WHEN...The maximum winds are expected around 4 AM EST Monday with the largest waves expected around 3 AM EST Monday. * 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 severe conditions. && $$ LHZ421-422-441>443-222100- /O.CON.KDTX.SC.Y.0073.000000T0000Z-211122T2100Z/ Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI- Port Sanilac to Port Huron MI- 957 AM EST Mon Nov 22 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... * WHAT...Expect sustained winds up to 23 knots from the west with gusts up to 32 knots. The largest significant waves will be 4 feet with a potential maximum wave height of 5 feet. * WHERE...Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay, Inner Saginaw Bay SW of Point Au Gres to Bay Port MI, Port Austin to Harbor Beach MI, Harbor Beach to Port Sanilac MI and Port Sanilac to Port Huron MI. * WHEN...The maximum winds are expected around 3 AM EST Monday with the largest waves expected around 3 AM EST Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$
984 WHUS73 KDTX 222046 MWWDTX URGENT - MARINE WEATHER MESSAGE National Weather Service Detroit/Pontiac MI 346 PM EST Mon Nov 22 2021 LHZ361-362-222200- /O.EXP.KDTX.GL.W.0018.000000T0000Z-211122T2100Z/ Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore- Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore- 346 PM EST Mon Nov 22 2021 ...GALE WARNING WILL EXPIRE AT 4 PM EST THIS AFTERNOON... Winds are weakening this afternoon with gusts beginning to fall below gales. While an occasional gust to low-end gales will be possible for the next couple hours early this evening, winds expected to generally fall below gales. $$ LHZ421-422-441>443-222200- /O.EXP.KDTX.SC.Y.0073.000000T0000Z-211122T2100Z/ Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI- Port Sanilac to Port Huron MI- 346 PM EST Mon Nov 22 2021 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 4 PM EST THIS AFTERNOON... Winds and waves are slowly decreasing this afternoon and will continue to trend down this evening. $$
What forecasters said that day
The local office's own words before this small craft advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Detroit, MI wrote its last area forecast discussion before this small craft advisory went out at Nov 20, 11:35 AM EST, 4 hours 9 minutes earlier.
Area forecast discussion, Nov 20, 11:35 AM EST, 4 hours 9 minutes before
Area Forecast Discussion
National Weather Service Detroit/Pontiac MI
1135 AM EST Sat Nov 20 2021
.AVIATION...
An upper level disturbance tracking through southern Lower Michigan
this afternoon will lead to scattered sprinkles (flurries not
totally out of the question but surface temps in upper 30s). The dry
low level air in place should hold, maintaining cloud bases above
5000 ft outside of perhaps a short window this afternoon from PTK
northward due to a moisture release off Lake Michigan. MBS looks to
be most susceptible to the potential low clouds (2500-5000 Feet)
into the evening, but confidence is too low to include at this time.
Southerly winds generally around 10 knots through the period,
slightly weaker tonight. Better moisture will arrive on Sunday,
providing greater potential for some lower ceiling heights within an
increasing coverage of showers in the early afternoon. Highest
confidence in DTW/YIP/DET seeing rainfall resulting in cigs/vsby
dipping into MVFR.
.DTW THRESHOLD PROBABILITIES...
* High confidence in cigs aob 5000 tomorrow afternoon
* Medium confidence in precip type as rain
&&
.PREV DISCUSSION...
Issued at 1035 AM EST Sat Nov 20 2021
UPDATE...
The earlier update tweaked the forecast for an explicit mention of
sprinkles given the radar trend across Indiana. The 12Z DTX sounding
carries a lot of influence for holding potential to no more than a
trace event with the depiction of a formidable layer of dry air below
700 mb. Model consensus also shows mid level advection moistening
the region near 700 mb while dry air holds from 850 mb to the
surface during late morning through this afternoon. That being said,
mid level theta-e advection is substantial in near 50 knot flow
above 850 mb and the 700 mb moisture gradient is sharp which helps
explain the band of hotter radar depiction seen this morning over
Indiana. The resulting band of elevated instability has a chance to
brush through SE MI mainly south of I-69 where a few pockets of
sprinkles have the best chance to reach the ground. The surface based
warm layer is also shown in model sounding to hold near 2000 ft
helping ensure a sprinkle is favored over a flurries through this
afternoon.
PREV DISCUSSION...
Issued at 408 AM EST Sat Nov 20 2021
DISCUSSION...
Cloudy and cool day ahead as weak mid level wave embedded in a zonal
southern stream jet advances across the southern Great Lakes.
Overcast skies will hold through the day as elevated warm advection
brings moisture aloft keeping ceilings mainly above 10kft as lower
levels from the surface up to around 700mb is quiet dry and will be
tough to overcome. This will also make it very difficult to realize
any precipitation today although virga will likely be present at
times. Highs will reach the low 40s this afternoon before dropping
to near freezing tonight. Ample cloud cover will prevent temps from
getting too cold tonight.
Weather gets a little more active Sunday and Monday as stronger
trough driven by a 150 knot jet, drops out of Canada and phases with
the weaker southern stream jet around 110 knots over the region. The
base of the northern stream trough will surge east due to the jet
making it negatively tilted by the time it reaches the Great Lakes
Sunday night. Strongest part of the mid level system will cut across
southern Canada but a strong vort lobe will pivot down through the
area late Sunday. Pressure falls ahead of the mid level trough will
quickly spin up a surface low Sunday which will rapidly deepen while
lifting into Ontario/Quebec Sunday night into Monday. Moisture will
lift north into the area from southwest to northeast on Saturday
night and Sunday ahead of the cold front which will bring rain
chances to the area. Best chances down around Detroit with lesser
chances up toward Tri-Cities beginning Sunday morning. Model trends
are for a drier system overall keeping QPF below a quarter inch
Sunday.
More notable impact will be winds Sunday night into Monday. A
secondary arctic front around 00Z Monday will bring strong cold
advection with northwest flow behind it. 850mb temps will quickly
drop close to 10C with strong subsidence in the wake of the front.
Over land, model soundings suggest mixing depths to around 7kft
mixing down winds around 35-40 mph. There are a few soundings with
40 knots near the top of the layer so we could see a few hours of
strong winds immediately behind the front, tempered slightly by
nocturnal timing, before stabilizing more around gusts to 30 for the
remainder of the night. High pressure building into the region
Monday will further temper winds as well as force the low level jet
max off to the east. So gusts will probably top out more around 25
mph during the afternoon. This combined with highs topping out
around 35F will keep wind chill temps in the 20s through the day.
Cold northwest flow will excite lake effect but this direction is
typically not favorable for snow bands of substance making it to SE
MI so could see some flurries during the day.
Ridge will slide through the area Tuesday and Wednesday keeping the
weather fairly quiet with a slight warm up as winds turn back to the
SW. There is a weak shortwave lifting NE ahead of the next trough
which could drum up a few light showers Wednesday. Otherwise, next
chances of showers will come later in the week Thursday and Friday
as the next longwave trough passes east through the Great Lakes.
MARINE...
Moderate southwest to south/southwest flow will continue across the
local waters today as strong high pressure drifts eastward
from the northern Ohio Valley towards the Mid-Atlantic coast.
Gusts to around 25 knots will be possible through mid-afternoon
across outer Saginaw Bay and the nearshore Lake Huron waters from
Port Austin to Port Sanilac, where Small Craft Advisories are in
effect. Despite offshore winds, waves will still range from 3-5
feet, with occasional peak waves around 7 feet.
Winds will temporarily slacken Saturday night before ramping up
again Sunday and especially Sunday night and into Monday as low
pressure developing over the upper Midwest rapidly deepens and
tracks northeast towards the northern Great Lakes. This system will
pull a strong cold front across the region flipping winds to the
northwest along with a surge of cold air. Winds to gale force across
much of the local waters will be possible during this time,
especially across the Lake Huron basin, and a Gale Watch has been
issued. Winds will be slightly lower across Lake St Clair and Lake
Erie thus will hold off on the watch at this point as current
guidance points toward possible Small Craft Advisories.
&&
.DTX WATCHES/WARNINGS/ADVISORIES...
MI...NONE.
Lake Huron...Gale Watch from Sunday afternoon through Monday morning for
LHZ361>363-421-422-441>443-462>464.
Small Craft Advisory until 4 PM EST this afternoon for LHZ421-441-
442.
Lake St Clair...NONE.
Michigan waters of Lake Erie...NONE.
&&
AVIATION.....SF
UPDATE.......BT
DISCUSSION...DRK
MARINE.......IRL/DRK
You can obtain your latest National Weather Service forecasts online
at www.weather.gov/detroit.Hazardous weather outlook, Nov 20, 4:28 AM EST, 11 hours 16 minutes before
Hazardous Weather Outlook National Weather Service Detroit/Pontiac MI 428 AM EST Sat Nov 20 2021 MIZ047>049-053>055-060>063-068>070-075-076-082-083-211000- Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer- St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe- 428 AM EST Sat Nov 20 2021 This hazardous weather outlook is for portions of southeast Michigan. .DAY ONE...Today and Tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Sunday through Friday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today and tonight. LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-211000- Lake St Clair- Michigan Waters of Lake Erie from Detroit River to North Cape MI- Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore- Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore- Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore- Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI- Port Sanilac to Port Huron MI- Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore- Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore- Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore- 428 AM EST Sat Nov 20 2021 This hazardous weather outlook is for portions of Lake Erie, Lake Huron and Lake St Clair. .DAY ONE...Today and Tonight A Small Craft Advisory is in effect today for outer Saginaw Bay and the nearshore waters of Lake Huron from Port Austin to Port Sanilac. Please refer to the latest marine hazards and forecasts for additional details. .DAYS TWO THROUGH SEVEN...Sunday through Friday A Gale Watch is in effect for all of Lake Huron Sunday afternoon through Monday morning. Please refer to the latest marine hazards and forecasts for additional details. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today and tonight. You can obtain your latest National Weather Service forecasts online at www.weather.gov/detroit. DRK
The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 20, 3:48 AM EST | Gale Watch | DTX | 12 hr | |
| Nov 20, 3:44 PM EST | Gale Warning | DTX | 48 hr |
Nearby
Small Craft Advisories in Michigan, 2021Every small craft advisory in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.