Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
052
FZUS63 KMQT 282106
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
406 PM EST TUE FEB 28 2017

.SYNOPSIS...A 29.6 INCH LOW PRESSURE OVER IOWA WILL TRACK
NORTHEAST...CROSSING LOWER MICHIGAN WEDNESDAY AND REACHING SOUTHERN
QUEBEC WEDNESDAY NIGHT WHILE DEEPENING TO 29.1 INCHES. ALTHOUGH THE
LOW WILL CONTINUE EAST INTO THE CANADIAN MARITIMES ON THURSDAY...A
WEAK LOW PRESSURE TROUGH AVERAGING 30.2 INCHES WILL LINGER BACK TO
THE WESTERN GREAT LAKES. HIGH PRESSURE OF 30.6 INCHES OVER SOUTHERN
MANITOBA THURSDAY AFTERNOON WILL THEN BUILD SOUTHEAST...REACHING THE
WESTERN GREAT LAKES FRIDAY AFTERNOON AND THE LOWER GREAT LAKES BY
SATURDAY AFTERNOON. AS THE HIGH MOVES TO THE EAST COAST ON
SUNDAY...A 29.8 INCH LOW PRESSURE TROUGH WILL SWEEP EAST TO THE
UPPER GREAT LAKES.

LSZ162-010515-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
406 PM EST TUE FEB 28 2017 /306 PM CST TUE FEB 28 2017/

.LATE THIS AFTERNOON...NORTHEAST WINDS 20 TO 30 KNOTS. PATCHY
FOG. NUMEROUS SNOW SHOWERS...AREAS OF DRIZZLE AND PATCHY FREEZING
DRIZZLE. WAVES 4 TO 7 FEET.
.TONIGHT...NORTHEAST WINDS 20 TO 30 KNOTS. PATCHY FREEZING
DRIZZLE IN THE EVENING. SCATTERED SNOW SHOWERS. FREEZING SPRAY
AFTER MIDNIGHT. WAVES BUILDING TO 7 TO 10 FEET.
.WEDNESDAY...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. FREEZING SPRAY IN THE MORNING.
ISOLATED SNOW SHOWERS IN THE MORNING. WAVES SUBSIDING TO 3 TO
5 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES CALM
TO 2 FEET.
.THURSDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN
SHOWERS...POSSIBLY MIXED WITH SNOW. WAVES BUILDING TO 1 TO
3 FEET.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING NORTHEAST. WAVES
SUBSIDING TO CALM TO 2 FEET.

$$

LSZ263-010515-
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-
406 PM EST TUE FEB 28 2017

...GALE WARNING IN EFFECT THROUGH WEDNESDAY MORNING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 1 AM EST WEDNESDAY
THROUGH WEDNESDAY AFTERNOON...

.LATE THIS AFTERNOON...NORTHEAST GALES TO 35 KNOTS. PATCHY FOG.
NUMEROUS SNOW SHOWERS AND PATCHY FREEZING DRIZZLE. WAVES 4 TO
7 FEET.
.TONIGHT...NORTHEAST GALES TO 35 KNOTS. PATCHY FOG IN THE
EVENING. HEAVY FREEZING SPRAY. PATCHY FREEZING DRIZZLE IN THE
EVENING. SCATTERED SNOW SHOWERS. WAVES BUILDING TO 7 TO 11 FEET.
.WEDNESDAY...NORTHEAST GALES TO 35 KNOTS DIMINISHING TO 15 TO
25 KNOTS IN THE AFTERNOON. ISOLATED SNOW SHOWERS IN THE MORNING.
HEAVY FREEZING SPRAY. WAVES SUBSIDING TO 3 TO 6 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO
3 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN
SHOWERS...POSSIBLY MIXED WITH SNOW. WAVES BUILDING TO 3 TO
6 FEET.
.SUNDAY...WEST WINDS 10 TO 20 KNOTS BACKING EAST. WAVES SUBSIDING
TO CALM TO 2 FEET.

$$

LSZ264-010515-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
406 PM EST TUE FEB 28 2017

...GALE WARNING IN EFFECT THROUGH WEDNESDAY MORNING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 1 AM EST WEDNESDAY
THROUGH WEDNESDAY AFTERNOON...

.LATE THIS AFTERNOON...NORTHEAST GALES TO 35 KNOTS. PATCHY FOG.
PATCHY FREEZING DRIZZLE. WAVES 4 TO 8 FEET.
.TONIGHT...NORTHEAST GALES TO 35 KNOTS. PATCHY FOG IN THE
EVENING. HEAVY FREEZING SPRAY. PATCHY FREEZING DRIZZLE IN THE
EVENING. ISOLATED SNOW SHOWERS. WAVES BUILDING TO 8 TO 11 FEET.
.WEDNESDAY...NORTHEAST GALES TO 35 KNOTS BECOMING NORTH 20 TO
30 KNOTS IN THE AFTERNOON. ISOLATED SNOW SHOWERS IN THE MORNING.
HEAVY FREEZING SPRAY. WAVES SUBSIDING TO 4 TO 7 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. A
SLIGHT CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES BUILDING
TO 3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
.FRIDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS 15 TO 25 KNOTS BECOMING SOUTHEAST 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS. A CHANCE OF RAIN SHOWERS.
WAVES BUILDING TO 6 TO 9 FEET...THEN SUBSIDING TO 4 TO 7 FEET.
.SUNDAY...SOUTH WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ265-010515-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
406 PM EST TUE FEB 28 2017

...GALE WARNING IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
WEDNESDAY AFTERNOON...

.LATE THIS AFTERNOON...NORTH WINDS 20 TO 30 KNOTS. PATCHY FOG.
AREAS OF DRIZZLE...FREEZING DRIZZLE AND ISOLATED SNOW SHOWERS.
WAVES 2 TO 4 FEET BUILDING TO 3 TO 5 FEET.
.TONIGHT...NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS AFTER MIDNIGHT. PATCHY FOG IN THE EVENING. FREEZING
SPRAY BY MIDNIGHT. AREAS OF DRIZZLE IN THE EVENING. SCATTERED
SNOW SHOWERS AND PATCHY FREEZING DRIZZLE. WAVES BUILDING TO 7 TO
10 FEET.
.WEDNESDAY...NORTHEAST GALES TO 35 KNOTS BECOMING NORTH 20 TO
30 KNOTS IN THE AFTERNOON. FREEZING SPRAY. SCATTERED SNOW
SHOWERS. WAVES SUBSIDING TO 5 TO 8 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS BACKING NORTHWEST
AFTER MIDNIGHT. SNOW SHOWERS LIKELY IN THE EVENING...THEN A
CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO
5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.FRIDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS 15 TO 25 KNOTS BACKING SOUTHEAST. A
CHANCE OF SNOW SHOWERS. A CHANCE OF RAIN SHOWERS. WAVES BUILDING
TO 4 TO 7 FEET...THEN SUBSIDING TO 3 TO 5 FEET.
.SUNDAY...SOUTH WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ266-010515-
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-
406 PM EST TUE FEB 28 2017

...GALE WARNING IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
WEDNESDAY AFTERNOON...

.LATE THIS AFTERNOON...NORTHEAST WINDS 15 TO 25 KNOTS. PATCHY
FOG. ISOLATED RAIN SHOWERS AND PATCHY DRIZZLE. WAVES 3 TO 6 FEET
BUILDING TO 5 TO 8 FEET.
.TONIGHT...NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
40 KNOTS AFTER MIDNIGHT. PATCHY FOG IN THE EVENING. FREEZING
SPRAY AFTER MIDNIGHT. PATCHY DRIZZLE IN THE EVENING. SCATTERED
SNOW SHOWERS AND PATCHY FREEZING DRIZZLE. WAVES BUILDING TO 8 TO
11 FEET.
.WEDNESDAY...NORTHEAST GALES TO 40 KNOTS BECOMING NORTH GALES TO
35 KNOTS IN THE AFTERNOON. FREEZING SPRAY. SCATTERED SNOW SHOWERS.
WAVES SUBSIDING TO 6 TO 9 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. A
SLIGHT CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. SNOW SHOWERS LIKELY IN THE EVENING...
THEN A CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO
3 TO 5 FEET.
.FRIDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS BACKING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS. A CHANCE OF RAIN SHOWERS.
WAVES BUILDING TO 5 TO 9 FEET.
.SUNDAY...SOUTH WINDS 15 TO 25 KNOTS BACKING NORTH. A CHANCE OF
RAIN AND SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ267-010515-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
406 PM EST TUE FEB 28 2017

...GALE WARNING IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
WEDNESDAY AFTERNOON...

.LATE THIS AFTERNOON...NORTHEAST WINDS 10 TO 20 KNOTS. PATCHY
FOG. ISOLATED RAIN SHOWERS AND PATCHY DRIZZLE. WAVES CALM TO
2 FEET.
.TONIGHT...NORTHEAST WINDS 15 TO 25 KNOTS INCREASING TO GALES TO
35 KNOTS AFTER MIDNIGHT. PATCHY FOG IN THE EVENING. FREEZING
SPRAY AFTER MIDNIGHT. PATCHY DRIZZLE IN THE EVENING. ISOLATED
SNOW SHOWERS AND PATCHY FREEZING DRIZZLE. WAVES BUILDING TO 7 TO
10 FEET.
.WEDNESDAY...NORTHEAST GALES TO 35 KNOTS BACKING NORTH IN THE
AFTERNOON. HEAVY FREEZING SPRAY. SCATTERED SNOW SHOWERS. WAVES
SUBSIDING TO 6 TO 9 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. A
SLIGHT CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO
1 TO 3 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
.THURSDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH
AFTER MIDNIGHT. SNOW SHOWERS LIKELY. WAVES BUILDING TO 2 TO
4 FEET.
.FRIDAY...NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS IN THE AFTERNOON. SNOW SHOWERS LIKELY IN THE MORNING...
THEN A CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES SUBSIDING
TO CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS BACKING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS 15 TO 25 KNOTS BECOMING SOUTHEAST 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO
6 FEET.
.SUNDAY...SOUTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS. A CHANCE OF RAIN AND SNOW SHOWERS. WAVES SUBSIDING TO
CALM TO 2 FEET.

$$

LSZ261-010515-
MAFOR 2822/
SUPERIOR WEST...GALE AND HEAVY FREEZING SPRAY WARNINGS IN
EFFECT...11140 11150 11151 12152 12142 11130. HEAVY FREEZING
SPRAY. PATCHY FOG EARLY THIS EVENING. SCATTERED SNOW SHOWERS WITH
AREAS OF LIGHT FREEZING DRIZZLE EARLY THIS EVENING... THEN AREAS
OF LIGHT FREEZING DRIZZLE THROUGH EARLY EVENING. SCATTERED SNOW
SHOWERS LATE THIS EVENING. FREEZING SPRAY WEDNESDAY AFTERNOON.
WAVES 5 TO 8 FEET BUILDING TO 6 TO 10 FEET TONIGHT. WAVES 6 TO 10
FEET SUBSIDING TO 5 TO 7 FEET WEDNESDAY.

SUPERIOR NORTH CENTRAL...GALE AND HEAVY FREEZING SPRAY WARNINGS
IN EFFECT...11150 11151 12152 13152 11140. PATCHY FOG THIS
EVENING...THEN FREEZING SPRAY WITH PATCHY FOG LATE THIS EVENING.
PATCHY LIGHT FREEZING DRIZZLE THIS EVENING...THEN SCATTERED SNOW
SHOWERS WITH PATCHY LIGHT FREEZING DRIZZLE LATE THIS EVENING.
HEAVY FREEZING SPRAY. FREEZING SPRAY LATE WEDNESDAY. WAVES 5 TO 9
FEET BUILDING TO 7 TO 11 FEET TONIGHT. WAVES 7 TO 11 FEET
SUBSIDING TO 6 TO 9 FEET WEDNESDAY.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11845 11145
11140 11141 12150 11140 11840. PATCHY FOG LATE THIS EVENING.
FREEZING SPRAY OVERNIGHT. SCATTERED SNOW SHOWERS WITH AREAS OF
LIGHT FREEZING DRIZZLE LATE THIS EVENING. SCATTERED SNOW SHOWERS
WITH PATCHY LIGHT FREEZING DRIZZLE AFTER MIDNIGHT...THEN
SCATTERED SNOW SHOWERS LATE TONIGHT. FREEZING SPRAY IN THE
MORNING. SCATTERED SNOW SHOWERS WEDNESDAY MORNING. WAVES 1 TO 3
FEET BUILDING TO 6 TO 10 FEET TONIGHT AND WEDNESDAY.

SUPERIOR EAST...GALE WARNING IN EFFECT...11130 14150 13152.
PATCHY FOG THIS EVENING. FREEZING SPRAY LATE. SCATTERED RAIN
SHOWERS EARLY THIS EVENING. PATCHY DRIZZLE AND LIGHT FREEZING
DRIZZLE LATE THIS EVENING. SCATTERED SNOW SHOWERS LATE WEDNESDAY
MORNING. WAVES 1 TO 2 FEET BUILDING TO 7 TO 10 FEET TONIGHT. WAVES
7 TO 11 FEET SUBSIDING TO 6 TO 9 FEET WEDNESDAY.

$$

PETRO



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.