Alert archive / Illinois / Gale Warnings in 2020

Gale Warning 21, NWS Chicago, IL

October 12, 2020

NWS Chicago, IL issued this gale warning at Oct 12, 2020, 3:46 AM CDT. It took effect at Oct 12, 2020, 10:00 AM CDT. It was in force for 9 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
Oct 12, 2020, 3:46 AM CDT (08:46 UTC)
In effect from
Oct 12, 2020, 10:00 AM CDT
Expired
Oct 12, 2020, 7:00 PM CDT
In force
9 hr
Issued by
NWS Chicago, IL

The text

As transmitted.

814 
WHUS73 KLOT 120846
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
346 AM CDT Mon Oct 12 2020

LMZ741>744-121700-
/O.UPG.KLOT.SC.Y.0085.201012T1500Z-201013T0000Z/
/O.NEW.KLOT.GL.W.0021.201012T1500Z-201013T0000Z/
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
346 AM CDT Mon Oct 12 2020

...GALE WARNING IN EFFECT FROM 10 AM THIS MORNING TO 7 PM CDT
THIS EVENING...

The National Weather Service in Chicago has issued a Gale
Warning, which is in effect from 10 AM this morning to 7 PM CDT
this evening. The Small Craft Advisory is no longer in effect. 

* WINDS...Southeast to 25 kt early, increasing to 35 kt gales late
  this morning and shifting northwest in the afternoon.

* SIGNIFICANT WAVES...to 6 ft.

* OCCASIONAL WAVES...to 8 ft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Gale Warning means winds of 34 to 47 knots are imminent or
occurring. Operating a vessel in gale conditions requires
experience and properly equipped vessels. It is highly
recommended that mariners without the proper experience seek safe
harbor prior to the onset of gale conditions.

&&

$$

LMZ740-121700-
/O.EXT.KLOT.SC.Y.0085.000000T0000Z-201012T1500Z/
/O.NEW.KLOT.GL.W.0021.201012T1500Z-201013T0000Z/
Winthrop Harbor to Wilmette Harbor IL-
346 AM CDT Mon Oct 12 2020

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

The National Weather Service in Chicago has issued a Gale
Warning, which is in effect from 10 AM this morning to 7 PM CDT
this evening. 

* WINDS...Southeast to 25 kt early, increasing to 35 kt gales late
  this morning and shifting northwest in the afternoon.

* SIGNIFICANT WAVES...to 6 ft.

* OCCASIONAL WAVES...to 8 ft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
are expected to produce hazardous wave conditions to small craft.
Inexperienced mariners...especially those operating smaller
vessels should avoid navigating in these conditions.

A Gale Warning means winds of 34 to 47 knots are imminent or
occurring. Operating a vessel in gale conditions requires
experience and properly equipped vessels. It is highly
recommended that mariners without the proper experience seek safe
harbor prior to the onset of gale conditions.

&&

$$

LMZ745-121700-
/O.NEW.KLOT.GL.W.0021.201012T1500Z-201013T0000Z/
/O.EXT.KLOT.SC.Y.0085.201013T0000Z-201013T0600Z/
Burns Harbor to Michigan City IN-
346 AM CDT Mon Oct 12 2020

...GALE WARNING IN EFFECT FROM 10 AM THIS MORNING TO 7 PM CDT
THIS EVENING...
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 7 PM THIS EVENING TO
1 AM CDT TUESDAY...

The National Weather Service in Chicago has issued a Gale
Warning, which is in effect from 10 AM this morning to 7 PM CDT
this evening. 

* WINDS...Southeast to 25 kt, increasing to 35 kt gales late this
  morning and shifting northwest in the afternoon.

* SIGNIFICANT WAVES...to 7 ft.

* OCCASIONAL WAVES...to 9 ft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
are expected to produce hazardous wave conditions to small craft.
Inexperienced mariners...especially those operating smaller
vessels should avoid navigating in these conditions.

A Gale Warning means winds of 34 to 47 knots are imminent or
occurring. Operating a vessel in gale conditions requires
experience and properly equipped vessels. It is highly
recommended that mariners without the proper experience seek safe
harbor prior to the onset of gale conditions.

&&

$$

Carlaw
3 follow-up statements
723 
WHUS73 KLOT 121449
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
949 AM CDT Mon Oct 12 2020

LMZ740-122300-
/O.EXP.KLOT.SC.Y.0085.000000T0000Z-201012T1500Z/
/O.CON.KLOT.GL.W.0021.201012T1500Z-201013T0000Z/
Winthrop Harbor to Wilmette Harbor IL-
949 AM CDT Mon Oct 12 2020

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

* WINDS...South winds to 30 kt increasing to 35 kt gales by noon
  then shifting to west to northwest in the afternoon. 

* SIGNIFICANT WAVES...to 6 ft.

* OCCASIONAL WAVES...to 8 ft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Gale Warning means winds of 34 to 47 knots are imminent or
occurring. Operating a vessel in gale conditions requires
experience and properly equipped vessels. It is highly
recommended that mariners without the proper experience seek safe
harbor prior to the onset of gale conditions.

&&

$$

LMZ745-122300-
/O.CON.KLOT.GL.W.0021.201012T1500Z-201013T0000Z/
/O.CON.KLOT.SC.Y.0085.201013T0000Z-201013T0600Z/
Burns Harbor to Michigan City IN-
949 AM CDT Mon Oct 12 2020

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

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING
TO 1 AM CDT TUESDAY...

* WINDS...South to 30 kt increasing to 35 kt gales early this
  afternoon and shifting to west to northwest in the afternoon. 

* SIGNIFICANT WAVES...to 8 ft.

* OCCASIONAL WAVES...to 10 ft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
are expected to produce hazardous wave conditions to small craft.
Inexperienced mariners...especially those operating smaller
vessels should avoid navigating in these conditions.

A Gale Warning means winds of 34 to 47 knots are imminent or
occurring. Operating a vessel in gale conditions requires
experience and properly equipped vessels. It is highly
recommended that mariners without the proper experience seek safe
harbor prior to the onset of gale conditions.

&&

$$

LMZ741>744-122300-
/O.CON.KLOT.GL.W.0021.201012T1500Z-201013T0000Z/
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
949 AM CDT Mon Oct 12 2020

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

* WINDS...South winds to 30 kt increasing to 35 kt gales by noon
  then shifting to west to northwest in the afternoon. 

* SIGNIFICANT WAVES...to 6 ft.

* OCCASIONAL WAVES...to 8 ft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Gale Warning means winds of 34 to 47 knots are imminent or
occurring. Operating a vessel in gale conditions requires
experience and properly equipped vessels. It is highly
recommended that mariners without the proper experience seek safe
harbor prior to the onset of gale conditions.

&&

$$

MTF
303 
WHUS73 KLOT 122032
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
332 PM CDT Mon Oct 12 2020

LMZ745-130445-
/O.CON.KLOT.GL.W.0021.000000T0000Z-201013T0000Z/
/O.CON.KLOT.SC.Y.0085.201013T0000Z-201013T0600Z/
Burns Harbor to Michigan City IN-
332 PM CDT Mon Oct 12 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING
TO 1 AM CDT TUESDAY...

* WINDS...Northwest 20 to 30 kt. Gale gusts up to 35 kt.  

* SIGNIFICANT WAVES...to 8 ft.

* OCCASIONAL WAVES...to 10 ft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
are expected to produce hazardous wave conditions to small craft.
Inexperienced mariners...especially those operating smaller
vessels should avoid navigating in these conditions.

A Gale Warning means winds of 34 to 47 knots are imminent or
occurring. Operating a vessel in gale conditions requires
experience and properly equipped vessels. It is highly
recommended that mariners without the proper experience seek safe
harbor prior to the onset of gale conditions.

&&

$$

LMZ740>744-130000-
/O.CON.KLOT.GL.W.0021.000000T0000Z-201013T0000Z/
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-
332 PM CDT Mon Oct 12 2020

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

* WINDS...Northwest 20 to 30 kt. Gale gusts up to 35 kt. 

* SIGNIFICANT WAVES...to 6 ft.

* OCCASIONAL WAVES...to 8 ft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Gale Warning means winds of 34 to 47 knots are imminent or
occurring. Operating a vessel in gale conditions requires
experience and properly equipped vessels. It is highly
recommended that mariners without the proper experience seek safe
harbor prior to the onset of gale conditions.

&&

$$

Petr
996 
WHUS73 KLOT 130004
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
704 PM CDT Mon Oct 12 2020

LMZ745-130600-
/O.EXP.KLOT.GL.W.0021.000000T0000Z-201013T0000Z/
/O.CON.KLOT.SC.Y.0085.000000T0000Z-201013T0600Z/
Burns Harbor to Michigan City IN-
704 PM CDT Mon Oct 12 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT
TUESDAY...

* WINDS...Northwest to 30 kt.

* SIGNIFICANT WAVES...to 8 ft.

* OCCASIONAL WAVES...to 10 ft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
are expected to produce hazardous wave conditions to small craft.
Inexperienced mariners...especially those operating smaller
vessels should avoid navigating in these conditions.

&&

$$

LMZ740>744-130115-
/O.EXP.KLOT.GL.W.0021.000000T0000Z-201013T0000Z/
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-
704 PM CDT Mon Oct 12 2020

...GALE WARNING HAS EXPIRED...

The gale warning is no longer in effect.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 12, 11:41 AM CDTSpecial Weather StatementLOTOgle19 min
Oct 12, 2:00 PM CDTSpecial Weather StatementLOTCook, Kankakee45 min
Oct 12, 2:44 PM CDTSpecial Marine WarningLOT61 min
Oct 12, 2:24 PM CDTSevere Thunderstorm WarningLOTLake, Porter36 min
Oct 12, 3:06 PM CDTSpecial Weather StatementLOTJasper24 min

Nearby

Gale Warnings in Illinois, 2020Every gale warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.