Alert archive / Illinois / Gale Warnings in 2021

Gale Warning 7, NWS Chicago, IL

March 15, 2021

NWS Chicago, IL issued this gale warning at Mar 15, 2021, 1:56 PM CDT. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Mar 15, 2021, 1:56 PM CDT (18:56 UTC)
Expired
Mar 15, 2021, 7:00 PM CDT
In force
5 hr
Issued by
NWS Chicago, IL

The text

As transmitted.

777 
WHUS73 KLOT 151856
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
156 PM CDT Mon Mar 15 2021

LMZ740>742-160300-
/O.UPG.KLOT.SC.Y.0023.000000T0000Z-210316T0900Z/
/O.NEW.KLOT.GL.W.0007.210315T1900Z-210316T0000Z/
/O.NEW.KLOT.SC.Y.0024.210316T0000Z-210316T0900Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
156 PM CDT Mon Mar 15 2021

...GALE WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING...

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 4 AM
CDT TUESDAY...

* WHAT...East gales to 35 kt. Significant waves to 10 ft. 
  Occasional waves to 13 ft.

* WHERE...Winthrop Harbor to Wilmette Harbor IL, Wilmette Harbor 
  to Northerly Island IL and Northerly Island to Calumet Harbor 
  IL.

* WHEN...For the Gale Warning, until 7 PM CDT this evening. For 
  the Small Craft Advisory, from 7 PM this evening to 4 AM CDT 
  Tuesday.

* 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.

&&

$$

LMZ743>745-160300-
/O.UPG.KLOT.SC.Y.0023.000000T0000Z-210316T0300Z/
/O.NEW.KLOT.GL.W.0007.210315T1900Z-210316T0000Z/
/O.NEW.KLOT.SC.Y.0024.210316T0000Z-210316T0300Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
156 PM CDT Mon Mar 15 2021

...GALE WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING...

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM TO 10 PM CDT THIS
EVENING...

* WHAT...East gales to 35 kt. Significant waves to 6 ft.
  Occasional waves to 8 ft.

* WHERE...Calumet Harbor IL to Gary IN, Gary to Burns Harbor IN 
  and Burns Harbor to Michigan City IN.

* WHEN...For the Gale Warning, until 7 PM CDT this evening. For 
  the Small Craft Advisory, from 7 PM to 10 PM CDT this evening.

* 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.

&&

$$
2 follow-up statements
943 
WHUS73 KLOT 152039
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
339 PM CDT Mon Mar 15 2021

LMZ740>742-160445-
/O.CON.KLOT.GL.W.0007.000000T0000Z-210316T0000Z/
/O.CON.KLOT.SC.Y.0024.210316T0000Z-210316T0900Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
339 PM CDT Mon Mar 15 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING
TO 4 AM CDT TUESDAY...

* WHAT...For the Gale Warning, east gales to 35 kt and waves 5 to
  8 ft occaionally 10 ft. For the Small Craft Advisory, east winds
  15 to 25 kt kt and waves 4 to 6 ft occasionally 8 ft expected.

* WHERE...Northerly Island to Calumet Harbor IL, Winthrop Harbor 
  to Wilmette Harbor IL and Wilmette Harbor to Northerly Island 
  IL.

* WHEN...For the Gale Warning, until 7 PM CDT this evening. For 
  the Small Craft Advisory, from 7 PM this evening to 4 AM CDT 
  Tuesday.

* 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.

&&

$$

LMZ743>745-160300-
/O.CON.KLOT.GL.W.0007.000000T0000Z-210316T0000Z/
/O.CON.KLOT.SC.Y.0024.210316T0000Z-210316T0300Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
339 PM CDT Mon Mar 15 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM TO 10 PM CDT
THIS EVENING...

* WHAT...For the Gale Warning, east gales to 35 kt and waves 3 to
  5 ft. For the Small Craft Advisory, east winds 15 to 25 kt and 
  waves 3 to 5 ft expected.

* WHERE...Gary to Burns Harbor IN, Burns Harbor to Michigan City 
  IN and Calumet Harbor IL to Gary IN.

* WHEN...For the Gale Warning, until 7 PM CDT this evening. For 
  the Small Craft Advisory, from 7 PM to 10 PM CDT this evening.

* 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.

&&

$$
861 
WHUS73 KLOT 160024
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
724 PM CDT Mon Mar 15 2021

LMZ740>742-160830-
/O.EXP.KLOT.GL.W.0007.000000T0000Z-210316T0000Z/
/O.CON.KLOT.SC.Y.0024.000000T0000Z-210316T0900Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
724 PM CDT Mon Mar 15 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT
TUESDAY...
...GALE WARNING HAS EXPIRED...

* WHAT...East winds 15 to 25 kt with gusts up to 30 kt and waves 4
  to 6 ft occasionally to 8 ft expected.

* WHERE...Northerly Island to Calumet Harbor IL, Winthrop Harbor 
  to Wilmette Harbor IL and Wilmette Harbor to Northerly Island 
  IL.

* WHEN...Until 4 AM CDT Tuesday.

* 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>745-160300-
/O.EXP.KLOT.GL.W.0007.000000T0000Z-210316T0000Z/
/O.CON.KLOT.SC.Y.0024.000000T0000Z-210316T0300Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
724 PM CDT Mon Mar 15 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THIS
EVENING...
...GALE WARNING HAS EXPIRED...

* WHAT...East winds 15 to 25 kt and waves 3 to 5 ft expected.

* WHERE...Gary to Burns Harbor IN, Burns Harbor to Michigan City 
  IN and Calumet Harbor IL to Gary IN.

* WHEN...Until 10 PM CDT this evening.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 15, 2:58 AM CDTWinter Weather AdvisoryLOTBoone, DeKalb, Ford, Grundy, Iroquois, Kane and 10 more16 hr
Mar 15, 1:56 PM CDTSmall Craft AdvisoryLOT14 hr

Nearby

Gale Warnings in Illinois, 2021Every gale warning 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.