Alert archive / Illinois / Small Craft Advisories in 2021
Small Craft Advisory 21, NWS Chicago, IL
NWS Chicago, IL issued this small craft advisory at Mar 9, 2021, 3:50 AM CST. It took effect at Mar 9, 2021, 12:00 PM CST. It was in force for 21 hr.
The area
The counties it named.
The facts
- Issued
- Mar 9, 2021, 3:50 AM CST (09:50 UTC)
- In effect from
- Mar 9, 2021, 12:00 PM CST
- Expired
- Mar 10, 2021, 9:00 AM CST
- In force
- 21 hr
- Issued by
- NWS Chicago, IL
The text
As transmitted.
649 WHUS73 KLOT 090950 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 350 AM CST Tue Mar 9 2021 LMZ740>745-091800- /O.NEW.KLOT.SC.Y.0021.210309T1800Z-210310T1500Z/ /O.NEW.KLOT.GL.A.0003.210310T1500Z-210311T1000Z/ 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- 350 AM CST Tue Mar 9 2021 ...SMALL CRAFT ADVISORY IN EFFECT FROM NOON TODAY TO 9 AM CST WEDNESDAY... ...GALE WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE WEDNESDAY NIGHT... * WHAT...For the Small Craft Advisory, south winds to 25 to 30 kt, significant waves up to 6 ft, and occasional waves up to 8 ft. For the Gale Watch, south to southwest gales to 35 to 40 kt likely, with significant waves up to 6 ft and occasional waves up to 8 ft. * WHERE...Portions of Lake Michigan. * WHEN...For the Small Craft Advisory, from noon today to 9 AM CST Wednesday. For the Gale Watch, from Wednesday morning through late Wednesday night. * IMPACTS...Strong winds can cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should consider altering plans to avoid possible hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe wind and waves. && $$ RC
6 follow-up statements
532 WHUS73 KLOT 091552 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 952 AM CST Tue Mar 9 2021 LMZ740>745-100000- /O.CON.KLOT.SC.Y.0021.210309T1800Z-210310T1500Z/ /O.CON.KLOT.GL.A.0003.210310T1500Z-210311T1000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 952 AM CST Tue Mar 9 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST WEDNESDAY... ...GALE WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE WEDNESDAY NIGHT... * WHAT...For the Small Craft Advisory, south winds to 25 to 30 kt, significant waves up to 6 ft, and occasional waves up to 8 ft. For the Gale Watch, south to southwest gales to 35 to 40 kt likely, with significant waves up to 6 ft and occasional waves up to 8 ft. * WHERE...Portions of Lake Michigan. * WHEN...For the Small Craft Advisory, from noon today to 9 AM CST Wednesday. For the Gale Watch, from Wednesday morning through late Wednesday night. * IMPACTS...Strong winds can cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should consider altering plans to avoid possible hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe wind and waves. && $$
953 WHUS73 KLOT 092116 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 316 PM CST Tue Mar 9 2021 LMZ740>745-100530- /O.EXT.KLOT.SC.Y.0021.000000T0000Z-210310T1800Z/ /O.UPG.KLOT.GL.A.0003.210310T1500Z-210311T1000Z/ /O.NEW.KLOT.GL.W.0006.210310T1800Z-210311T1000Z/ 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- 316 PM CST Tue Mar 9 2021 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL NOON CST WEDNESDAY... ...GALE WARNING IN EFFECT FROM NOON WEDNESDAY TO 4 AM CST THURSDAY... * WHAT...For the Gale Warning, south to southwest gales to 35 to 40 kt likely, with significant waves up to 6 ft and occasional waves up to 8 ft. For the Small Craft Advisory, south winds 15 to 25 kt with gusts up to 30 kt and waves 2 to 4 ft expected. Highest waves along the Illinois nearshore. * WHERE...Southwest Lake Michigan nearshore waters. * WHEN...For the Gale Warning, from noon Wednesday to 4 AM CST Thursday. For the Small Craft Advisory, until noon CST Wednesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. * ADDITIONAL DETAILS...The winds will be strongest right here the shore line, where a few 40 kt gusts will be possible. Lighter winds will be found offshore. 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. && $$
933 WHUS73 KLOT 100330 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 930 PM CST Tue Mar 9 2021 LMZ740>745-101130- /O.EXT.KLOT.SC.Y.0021.000000T0000Z-210310T1500Z/ /O.EXT.KLOT.GL.W.0006.210310T1500Z-210311T1000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 930 PM CST Tue Mar 9 2021 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 AM CST WEDNESDAY... ...GALE WARNING NOW IN EFFECT FROM 9 AM WEDNESDAY TO 4 AM CST THURSDAY... * WHAT...For the Gale Warning, south to southwest gales to 35 to 40 kt likely, with significant waves up to 6 ft and occasional waves up to 8 ft. For the Small Craft Advisory, south winds 15 to 25 kt with gusts up to 30 kt and waves 2 to 4 ft expected. Highest waves along the Illinois nearshore. * WHERE...Southwest Lake Michigan nearshore waters. * WHEN...For the Gale Warning, from 9 AM Wednesday to 4 AM CST Thursday. For the Small Craft Advisory, until 9 AM CST Wednesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. * ADDITIONAL DETAILS...The winds will be strongest along the immediate shoreline, where a few 40 kt gusts will be possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. && $$
851 WHUS73 KLOT 101003 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 403 AM CST Wed Mar 10 2021 LMZ740>745-101815- /O.CON.KLOT.SC.Y.0021.000000T0000Z-210310T1500Z/ /O.CON.KLOT.GL.W.0006.210310T1500Z-210311T1000Z/ 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- 403 AM CST Wed Mar 10 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING... ...GALE WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 4 AM CST THURSDAY... * WHAT...For the Gale Warning, south to southwest gales to 35 to 40 kt likely, with 45 kt gales possible in the mid to late afternoon through mid evening. Significant waves up to 6 to 7 ft and occasional waves up to 8 to 9 ft. For the Small Craft Advisory, south winds to 30 kt. Highest waves of up to 6 ft along the Illinois nearshore. * WHERE...Southwest Lake Michigan nearshore waters. * WHEN...For the Gale Warning, from 9 AM Wednesday to 4 AM CST Thursday. For the Small Craft Advisory, until 9 AM CST Wednesday. * 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. && $$
949 WHUS73 KLOT 101004 CCA MWWLOT URGENT - MARINE WEATHER MESSAGE...CORRECTED National Weather Service Chicago IL 404 AM CST Wed Mar 10 2021 LMZ740>745-101815- /O.COR.KLOT.SC.Y.0021.000000T0000Z-210310T1500Z/ /O.COR.KLOT.GL.W.0006.210310T1500Z-210311T1000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 404 AM CST Wed Mar 10 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING... ...GALE WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 4 AM CST THURSDAY... * WHAT...For the Gale Warning, south to southwest gales to 35 to 40 kt, with 45 kt gales possible in the mid to late afternoon through mid evening. Significant waves up to 6 to 7 ft and occasional waves up to 8 to 9 ft. For the Small Craft Advisory, south winds to 30 kt. Highest waves of up to 6 ft along the Illinois nearshore. * WHERE...Southwest Lake Michigan nearshore waters. * WHEN...For the Gale Warning, from 9 AM Wednesday to 4 AM CST Thursday. For the Small Craft Advisory, until 9 AM CST Wednesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. && $$
185 WHUS73 KLOT 101514 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 914 AM CST Wed Mar 10 2021 LMZ740>745-102315- /O.EXP.KLOT.SC.Y.0021.000000T0000Z-210310T1500Z/ /O.CON.KLOT.GL.W.0006.000000T0000Z-210311T1000Z/ 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- 914 AM CST Wed Mar 10 2021 ...GALE WARNING REMAINS IN EFFECT UNTIL 4 AM CST THURSDAY... ...SMALL CRAFT ADVISORY HAS EXPIRED... * WHAT...South to southwest gales to 35 kt this morning, with 45 kt gales possible in the mid to late afternoon through mid evening. Significant waves up to 6 to 7 ft and occasional waves up to 8 to 9 ft. * WHERE...Southwest Lake Michigan nearshore waters. * WHEN...Until 4 AM CST Thursday. * 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. && $$ Carlaw
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 9, 3:50 AM CST | Gale Watch | LOT | 11 hr | |
| Mar 9, 8:46 AM CST | River Flood Advisory | LOT | Lake | 52 hr |
| Mar 9, 3:16 PM CST | Gale Warning | LOT | 37 hr |
Nearby
Small Craft Advisories in Illinois, 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.