Marine Weather Forecast from Environment Canada

Winds


Issued 10:30 AM EST
18 February 2020

Today Tonight and Wednesday. Wind northwest 30 knots diminishing to northwest 20 Wednesday morning and to northwest 15 near noon Wednesday. Wind increasing to northwest 20 Wednesday evening.

Extended Forecast


Issued 03:00 AM EST
18 February 2020
Thursday Wind northwest 15 knots increasing to west 30 late in the day.
Friday Wind southwest 35 knots diminishing to southwest 30 late in the day.
Saturday Wind southwest 30 knots.

Waves


Issued 10:30 AM EST
18 February 2020

Today Tonight and Wednesday. Over open water waves 2 to 3 metres subsiding to 2 near noon Wednesday and to one Wednesday afternoon.

Weather & Visibility


Issued 10:30 AM EST
18 February 2020

Today Tonight and Wednesday.Flurries. Visibility 1 mile or less in flurries.

Freezing Spray


Issued 10:30 AM EST
18 February 2020

Today Tonight and Wednesday. Freezing spray warning in effect. Freezing spray ending near noon Wednesday.

Ice Forecast*


Issued 12:00 PM EST
18 February 2020

Today Tonight and Wednesday Open water except 9 tenths new lake ice including 2 tenths thin lake ice along parts of the shore.

*Ice Forecast and Warnings also apply to U.S. waters

 

Lake Superior Mafor Forecast and Weather Conditions
From NOAA National Weather Service Weather Forecast Office



  
805  
FZUS63 KMQT 182103  
GLFLS  
 
OPEN LAKE FORECAST FOR LAKE SUPERIOR  
NATIONAL WEATHER SERVICE MARQUETTE MI  
403 PM EST TUE FEB 18 2020  
 
FOR WATERS BEYOND 5 NAUTICAL MILES OF SHORE ON LAKE SUPERIOR.  
 
WAVES ARE THE SIGNIFICANT WAVE HEIGHT - THE AVERAGE OF THE  
HIGHEST 1/3 OF THE WAVE SPECTRUM. OCCASIONAL WAVE HEIGHT IS THE  
AVERAGE OF THE HIGHEST 1/10 OF THE WAVE SPECTRUM.  
   
SYNOPSIS
 
A 29.5 INCH LOW PRESSURE SYSTEM OVER QUEBEC THIS  
AFTERNOON WILL CONTINUE MOVING NORTHEAST AWAY FROM THE GREAT LAKES  
REGION TONIGHT. ON WEDNESDAY, A 30.9 INCH HIGH PRESSURE WILL DROP  
SOUTH INTO THE NORTHERN PLAINS FROM THE CANADIAN ROCKIES. THIS  
HIGH PRESSURE WILL WEAKEN TO 30.7 INCHES AS IT HEADS TOWARD THE  
OHIO VALLEY THURSDAY INTO FRIDAY. ON SATURDAY NIGHT, A 29.9 INCH  
TROUGH WILL BEGIN MOVING ACROSS LAKE SUPERIOR. THIS TROUGH WILL  
STRENGTHEN TO 29.7 INCHES BY SUNDAY.  
 
LSZ162-190515-  
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND  
PORTAGE MN BEYOND 5NM-  
403 PM EST TUE FEB 18 2020 /303 PM CST TUE FEB 18 2020/  
 
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH WEDNESDAY  
EVENING...  
   
LATE THIS AFTERNOON
 
NORTHWEST WINDS 20 TO 30 KNOTS. HEAVY  
FREEZING SPRAY. ISOLATED SNOW SHOWERS. WAVES 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET BUILDING TO 4 TO 7 FEET OCCASIONALLY TO  
9 FEET.    
TONIGHT
 
NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO  
25 KNOTS LATE. HEAVY FREEZING SPRAY. ISOLATED SNOW SHOWERS. WAVES  
SUBSIDING TO 2 TO 4 FEET.    
WEDNESDAY
 
NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST.  
ISOLATED SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET, THEN  
BUILDING TO 2 TO 4 FEET.    
WEDNESDAY NIGHT
 
NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO  
10 TO 20 KNOTS BY MIDNIGHT, THEN BECOMING WEST 5 TO 15 KNOTS  
LATE. WAVES SUBSIDING TO 1 TO 3 FEET.    
THURSDAY
 
WEST WINDS 15 TO 25 KNOTS. FREEZING SPRAY. WAVES  
SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO 4 TO 7 FEET  
OCCASIONALLY TO 9 FEET.    
THURSDAY NIGHT
 
WEST WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST  
20 TO 30 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. WAVES 4 TO 7 FEET  
OCCASIONALLY TO 9 FEET.    
FRIDAY
 
SOUTHWEST WINDS 20 TO 30 KNOTS. FREEZING SPRAY IN THE  
MORNING. WAVES BUILDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.    
FRIDAY NIGHT
 
SOUTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO  
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 3 TO 5 FEET  
OCCASIONALLY TO 7 FEET.    
SATURDAY
 
SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS. WAVES SUBSIDING TO 2 TO 4 FEET, THEN BUILDING TO 3 TO  
5 FEET OCCASIONALLY TO 7 FEET.    
SUNDAY
 
WEST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM TO  
2 FEET.  
 

 
 
LSZ263-190515-  
LAKE SUPERIOR FROM SAXON HARBOR WI TO UPPER ENTRANCE TO PORTAGE  
CANAL MI 5NM OFF SHORE TO THE US/CANADIAN BORDER INCLUDING ISLE  
ROYALE NATIONAL PARK-  
403 PM EST TUE FEB 18 2020  
 
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH WEDNESDAY  
EVENING...  
   
LATE THIS AFTERNOON
 
NORTHWEST WINDS TO 30 KNOTS WITH A FEW  
GALE FORCE GUSTS TO 35 KNOTS POSSIBLE. FREEZING SPRAY. SCATTERED  
SNOW SHOWERS. WAVES 4 TO 8 FEET OCCASIONALLY TO 10 FEET.    
TONIGHT
 
NORTHWEST WINDS TO 30 KNOTS WITH A FEW GALE FORCE  
GUSTS TO 35 KNOTS POSSIBLE DIMINISHING TO 15 TO 25 KNOTS. HEAVY  
FREEZING SPRAY. SCATTERED SNOW SHOWERS. WAVES BUILDING TO 6 TO  
9 FEET OCCASIONALLY TO 11 FEET, THEN SUBSIDING TO 3 TO 5 FEET  
OCCASIONALLY TO 7 FEET.    
WEDNESDAY
 
NORTHWEST WINDS 15 TO 25 KNOTS. HEAVY FREEZING  
SPRAY. SCATTERED SNOW SHOWERS. WAVES 3 TO 5 FEET OCCASIONALLY TO  
7 FEET.    
WEDNESDAY NIGHT
 
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST  
10 TO 20 KNOTS LATE. HEAVY FREEZING SPRAY IN THE EVENING. A  
SLIGHT CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.    
THURSDAY
 
WEST WINDS 15 TO 25 KNOTS INCREASING TO GALES TO  
35 KNOTS IN THE AFTERNOON. FREEZING SPRAY. WAVES BUILDING TO 6 TO  
9 FEET OCCASIONALLY TO 11 FEET.    
THURSDAY NIGHT
 
WEST GALES TO 35 KNOTS. FREEZING SPRAY. WAVES  
BUILDING TO 6 TO 10 FEET OCCASIONALLY TO 13 FEET.    
FRIDAY
 
SOUTHWEST GALES TO 35 KNOTS. FREEZING SPRAY IN THE  
MORNING. WAVES BUILDING TO 8 TO 11 FEET OCCASIONALLY TO 14 FEET.    
FRIDAY NIGHT
 
WEST GALES TO 35 KNOTS DIMINISHING TO 15 TO  
25 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 5 TO 8 FEET  
OCCASIONALLY TO 10 FEET.    
SATURDAY
 
SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO  
20 KNOTS. WAVES SUBSIDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.    
SUNDAY
 
WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO 3 TO  
5 FEET OCCASIONALLY TO 7 FEET.  
 

 
 
LSZ264-190515-  
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU  
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-  
403 PM EST TUE FEB 18 2020  
 
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH WEDNESDAY  
EVENING...  
   
LATE THIS AFTERNOON
 
NORTHWEST WINDS 20 TO 30 KNOTS. FREEZING  
SPRAY. SCATTERED SNOW SHOWERS. WAVES 4 TO 7 FEET OCCASIONALLY TO  
9 FEET.    
TONIGHT
 
NORTHWEST WINDS TO 30 KNOTS WITH A FEW GALE FORCE  
GUSTS TO 35 KNOTS POSSIBLE VEERING NORTH BY MIDNIGHT, THEN  
BECOMING NORTHWEST 20 TO 30 KNOTS LATE. HEAVY FREEZING SPRAY.  
SCATTERED SNOW SHOWERS. WAVES BUILDING TO 7 TO 10 FEET  
OCCASIONALLY TO 13 FEET, THEN SUBSIDING TO 4 TO 7 FEET  
OCCASIONALLY TO 9 FEET.    
WEDNESDAY
 
NORTHWEST WINDS 15 TO 25 KNOTS. HEAVY FREEZING  
SPRAY. SCATTERED SNOW SHOWERS. WAVES SUBSIDING TO 3 TO 5 FEET  
OCCASIONALLY TO 7 FEET.    
WEDNESDAY NIGHT
 
NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO  
10 TO 20 KNOTS LATE. HEAVY FREEZING SPRAY. A SLIGHT CHANCE OF  
SNOW SHOWERS. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET, THEN  
SUBSIDING TO 2 TO 4 FEET.    
THURSDAY
 
WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO  
30 KNOTS IN THE AFTERNOON. FREEZING SPRAY. WAVES BUILDING TO 6 TO  
9 FEET OCCASIONALLY TO 11 FEET.    
THURSDAY NIGHT
 
WEST WINDS 20 TO 30 KNOTS. FREEZING SPRAY.  
WAVES BUILDING TO 8 TO 11 FEET OCCASIONALLY TO 14 FEET.    
FRIDAY
 
WEST GALES TO 35 KNOTS. WAVES BUILDING TO 10 TO 14 FEET  
OCCASIONALLY TO 18 FEET, THEN SUBSIDING TO 9 TO 12 FEET  
OCCASIONALLY TO 15 FEET.    
FRIDAY NIGHT
 
WEST GALES TO 35 KNOTS DIMINISHING TO 15 TO  
25 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 5 TO 8 FEET  
OCCASIONALLY TO 10 FEET.    
SATURDAY
 
SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO  
20 KNOTS. WAVES SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
SUNDAY
 
WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM TO  
2 FEET.  
 

 
 
LSZ265-190515-  
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI  
BEYOND 5NM FROM SHORE-  
403 PM EST TUE FEB 18 2020  
 
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH WEDNESDAY  
EVENING...  
   
LATE THIS AFTERNOON
 
NORTHWEST WINDS TO 30 KNOTS WITH A FEW  
GALE FORCE GUSTS TO 35 KNOTS POSSIBLE. FREEZING SPRAY. NUMEROUS  
SNOW SHOWERS. WAVES 3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
TONIGHT
 
NORTHWEST WINDS TO 30 KNOTS WITH A FEW GALE FORCE  
GUSTS TO 35 KNOTS POSSIBLE DIMINISHING TO 20 TO 30 KNOTS LATE.  
HEAVY FREEZING SPRAY. NUMEROUS SNOW SHOWERS IN THE EVENING.  
SCATTERED SNOW SHOWERS AFTER MIDNIGHT. WAVES 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET.    
WEDNESDAY
 
NORTHWEST WINDS 20 TO 30 KNOTS. HEAVY FREEZING SPRAY  
IN THE MORNING. SCATTERED SNOW SHOWERS. WAVES SUBSIDING TO 2 TO  
4 FEET.    
WEDNESDAY NIGHT
 
NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO  
10 TO 20 KNOTS LATE. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO  
CALM TO 2 FEET.    
THURSDAY
 
WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO  
25 KNOTS IN THE AFTERNOON. FREEZING SPRAY IN THE AFTERNOON. WAVES  
CALM TO 2 FEET.    
THURSDAY NIGHT
 
WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO  
30 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. WAVES BUILDING TO 1 TO  
3 FEET.    
FRIDAY
 
WEST WINDS 20 TO 30 KNOTS. WAVES SUBSIDING TO CALM TO  
2 FEET.    
FRIDAY NIGHT
 
WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO  
25 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.    
SATURDAY
 
SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST. WAVES  
CALM TO 2 FEET.    
SUNDAY
 
WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.  
 

 
 
LSZ266-190515-  
LAKE SUPERIOR EAST OF A LINE FROM MANITOU ISLAND TO MARQUETTE MI  
AND WEST OF A LINE FROM GRAND MARAIS MI TO THE US/CANADIAN BORDER  
BEYOND 5NM FROM SHORE-  
403 PM EST TUE FEB 18 2020  
   
..GALE WARNING IN EFFECT UNTIL 1 AM EST WEDNESDAY
 
 
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH WEDNESDAY  
EVENING...  
   
LATE THIS AFTERNOON
 
NORTHWEST GALES TO 35 KNOTS. FREEZING  
SPRAY. NUMEROUS SNOW SHOWERS. WAVES 8 TO 11 FEET OCCASIONALLY TO  
14 FEET.    
TONIGHT
 
NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 20 TO  
30 KNOTS LATE. HEAVY FREEZING SPRAY. PERIODS OF SNOW SHOWERS IN  
THE EVENING. SCATTERED SNOW SHOWERS AFTER MIDNIGHT. WAVES  
SUBSIDING TO 7 TO 10 FEET OCCASIONALLY TO 13 FEET, THEN BUILDING  
TO 9 TO 12 FEET OCCASIONALLY TO 15 FEET.    
WEDNESDAY
 
NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO  
30 KNOTS BY LATE MORNING, THEN DIMINISHING TO 15 TO 25 KNOTS BY  
MID AFTERNOON. HEAVY FREEZING SPRAY. NUMEROUS SNOW SHOWERS IN THE  
MORNING. SCATTERED SNOW SHOWERS IN THE AFTERNOON. WAVES SUBSIDING  
TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.    
WEDNESDAY NIGHT
 
NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO  
10 TO 20 KNOTS LATE. HEAVY FREEZING SPRAY. A CHANCE OF SNOW  
SHOWERS. WAVES BUILDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET,  
THEN SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
THURSDAY
 
WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO  
30 KNOTS IN THE AFTERNOON. FREEZING SPRAY. WAVES BUILDING TO 6 TO  
9 FEET OCCASIONALLY TO 11 FEET.    
THURSDAY NIGHT
 
WEST WINDS 20 TO 30 KNOTS. FREEZING SPRAY.  
WAVES BUILDING TO 8 TO 11 FEET OCCASIONALLY TO 14 FEET.    
FRIDAY
 
WEST GALES TO 35 KNOTS BACKING SOUTHWEST IN THE  
AFTERNOON. WAVES BUILDING TO 10 TO 14 FEET OCCASIONALLY TO  
18 FEET, THEN SUBSIDING TO 9 TO 12 FEET OCCASIONALLY TO 15 FEET.    
FRIDAY NIGHT
 
WEST GALES TO 35 KNOTS DIMINISHING TO 15 TO  
25 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 5 TO 8 FEET  
OCCASIONALLY TO 10 FEET.    
SATURDAY
 
SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO  
3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
SUNDAY
 
WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO 1 TO  
3 FEET.  
 

 
 
LSZ267-190515-  
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF  
SHORE TO THE US/CANADIAN BORDER-  
403 PM EST TUE FEB 18 2020  
   
..GALE WARNING IN EFFECT UNTIL 1 AM EST WEDNESDAY
 
 
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH WEDNESDAY  
EVENING...  
   
LATE THIS AFTERNOON
 
NORTHWEST GALES TO 40 KNOTS. FREEZING  
SPRAY. SCATTERED SNOW SHOWERS. WAVES 8 TO 11 FEET OCCASIONALLY TO  
14 FEET.    
TONIGHT
 
NORTHWEST GALES TO 35 KNOTS BECOMING NORTH 20 TO  
30 KNOTS BY MIDNIGHT, THEN BACKING NORTHWEST LATE. FREEZING  
SPRAY. PERIODS OF SNOW SHOWERS. WAVES SUBSIDING TO 7 TO 10 FEET  
OCCASIONALLY TO 13 FEET, THEN BUILDING TO 8 TO 11 FEET  
OCCASIONALLY TO 14 FEET.    
WEDNESDAY
 
NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO  
30 KNOTS. HEAVY FREEZING SPRAY. PERIODS OF SNOW SHOWERS. WAVES  
SUBSIDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.    
WEDNESDAY NIGHT
 
NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH  
BY MIDNIGHT, THEN BECOMING NORTHWEST 5 TO 15 KNOTS LATE. HEAVY  
FREEZING SPRAY. SNOW SHOWERS LIKELY. WAVES BUILDING TO 5 TO  
8 FEET OCCASIONALLY TO 10 FEET, THEN SUBSIDING TO 3 TO 5 FEET  
OCCASIONALLY TO 7 FEET.    
THURSDAY
 
NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO  
25 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS IN THE  
MORNING. FREEZING SPRAY. WAVES BUILDING TO 4 TO 7 FEET  
OCCASIONALLY TO 9 FEET.    
THURSDAY NIGHT
 
WEST WINDS 15 TO 25 KNOTS. FREEZING SPRAY.  
WAVES BUILDING TO 4 TO 8 FEET OCCASIONALLY TO 10 FEET.    
FRIDAY
 
SOUTHWEST WINDS 15 TO 25 KNOTS. FREEZING SPRAY IN THE  
MORNING. WAVES 4 TO 7 FEET OCCASIONALLY TO 9 FEET.    
FRIDAY NIGHT
 
SOUTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO  
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES 4 TO 7 FEET OCCASIONALLY TO  
9 FEET.    
SATURDAY
 
SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO  
2 TO 4 FEET.    
SUNDAY
 
WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO 1 TO  
3 FEET.  
 

 
 
LSZ261-190515-  
MAFOR 1822/  
SUPERIOR WEST...HEAVY FREEZING SPRAY WARNING IN EFFECT...12752  
12742 13732 11632. WAVES 5 TO 8 FEET SUBSIDING TO 3 TO 6 FEET  
TONIGHT. WAVES SUBSIDING TO 2 TO 4 FEET WEDNESDAY.  
 
SUPERIOR NORTH CENTRAL...HEAVY FREEZING SPRAY WARNING IN EFFECT...  
11750 19757 11752 19757 11852 19857 12742 19747 13732 19737.  
WAVES 5 TO 9 FEET TONIGHT. WAVES SUBSIDING TO 3 TO 7 FEET  
WEDNESDAY.  
 
SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11747 11757  
11752 19757 13742 19747 12732 19737. WAVES 4 TO 7 FEET BUILDING  
TO 5 TO 9 FEET TONIGHT. WAVES SUBSIDING TO 3 TO 7 FEET WEDNESDAY.  
 
SUPERIOR EAST...GALE WARNING IN EFFECT...11750 19757 11757 11857  
13747 12737. WAVES 7 TO 10 FEET TONIGHT. WAVES 5 TO 9 FEET  
WEDNESDAY.  
 

 
 
TAP  
 
EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT  
WEATHER.GOV/MQT/GLFTABLE  
 
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:  
WEATHER.GOV/GREATLAKES  
 




Random Weather Facts

HIGH
In the Northern Hemisphere, an area of high atmospheric pressure with a closed, clockwise movement of air (circulation) is called a high and is also known as an anticyclone.