Synopsis for Lake Superior
.SYNOPSIS...A 29.5 INCH LOW PRESSURE SYSTEM CENTERED OVER TORONTO
TONIGHT WILL MOVE INTO THE NORTHEAST STATES BY WEDNESDAY MORNING
WHILE A 30.5 INCH HIGH PRESSURE RIDGE BUILDS FROM CENTRAL CANADA INTO
THE UPPER MISSISSIPPI RIVER VALLEY. EXPECT THIS RIDGE TO MOVE INTO
THE OHIO RIVER VALLEY ON THURSDAY AND INTO THE SOUTHEAST STATES ON
FRIDAY. A LOW PRESSURE TROUGH AVERAGING 30.2 INCHES WILL CROSS THE
UPPER GREAT LAKES ON THURSDAY NIGHT AHEAD OF ANOTHER 30.8 INCH HIGH
PRESSURE BUILDING OVER SOUTH CENTRAL CANADA. LOOK FOR THIS HIGH TO
MOVE OVER MINNESOTA ON SATURDAY WHILE A WEAK LOW PRESSURE TROUGH
LINGERS OVER LAKE SUPERIOR AND DEPARTS SATURDAY EVENING. ON
SUNDAY...THE 30.8 INCH HIGH WILL MOVE ACROSS THE UPPER GREAT LAKES AS
A 29.7 INCH LOW DROPS OUT OF SASKATCHEWAN AND TRACKS SOUTHEAST ACROSS
THE NORTHERN PLAINS. THE HIGH WILL REACH THE EASTERN SEABOARD BY LATE
SUNDAY NIGHT.

Synopsis for Lake Michigan
.SYNOPSIS...LOW PRESSURE OF 29.4 OVER SOUTHEAST ONTARIO THIS
EVENING WILL CONTINUE TO LIFT NORTHEAST TOWARDS NEW ENGLAND COAST
WEDNESDAY. HIGH PRESSURE OF 30.4 INCHES LIES OVER MANITOBA AND
STRETCHES SOUTH ACROSS THE PLAINS. ANOTHER LOW OF 30.0 INCHES WILL
FORM OVER THE NORTHERN GREAT LAKES THURSDAY NIGHT WITH A TRAILING
COLD FRONT PUSHING DOWN LAKE MICHIGAN ON FRIDAY. MEANWHILE...THE
HIGH WILL STRENGTHEN TO 30.8 INCHES BY SATURDAY AS IT BECOMES
CENTERED OVER THE UPPER MISSISSIPPI VALLEY. THE HIGH WILL SHIFT
ACROSS LAKE MICHIGAN SATURDAY NIGHT INTO THE UPPER OHIO VALLEY
SUNDAY.

Synopsis for Lake Huron
.SYNOPSIS...LOW PRESSURE OVER THE SOUTH END OF LAKE HURON...29.50
INCHES...WILL DRIFT TOWARD LAKE ONTARIO TODAY. THIS WILL PRODUCE
INCREASING NORTH WIND OVER LAKE HURON AND LOWER MICHIGAN WHICH WILL
BRING ARCTIC AIR INTO THE REGION TONIGHT. EXPECT BUILDING WAVES...
NUMEROUS SNOW SQUALLS...AND POSSIBLY FREEZING SPRAY THROUGH
WEDNESDAY INTO THURSDAY. THE WIND WILL DIMINISH BUT ARCTIC AIR WILL
REMAIN IN PLACE AS HIGH PRESSURE...30.80 INCHES...MOVES INTO THE
WESTERN GREAT LAKES FOR THE END OF THE WEEK.

Synopsis for Lake Erie
.SYNOPSIS...LOW PRESSURE 29.50 INCHES OVER SOUTHERN ONTARIO WILL
SLOWLY WEAKEN AS IT DRIFTS TO NORTHERN NEW YORK STATE BY WEDNESDAY
AFTERNOON. HIGH PRESSURE 30.40 INCHES WILL BUILD FROM THE WESTERN
LAKES ON WEDNESDAY NIGHT TO THE LOWER OHIO VALLEY ON THURSDAY. ANOTHER
LOW PRESSURE SYSTEM WILL SLIDE ACROSS THE CENTRAL AND EASTERN
GREAT LAKES ON FRIDAY FORCING AN ARCTIC COLD FRONT SOUTH ACROSS
LAKE ERIE. ARCTIC HIGH PRESSURE 30.80 INCHES WILL BUILD OVER THE
GREAT LAKES FOR SUNDAY.

Synopsis for Lake Ontario
.SYNOPSIS...A 29.5 INCH LOW WILL CROSS LAKE ONTARIO OVERNIGHT
THROUGH WEDNESDAY MORNING BEFORE MOVING TO NORTHERN NEW ENGLAND BY
WEDNESDAY NIGHT. A 30.6 INCH HIGH OVER THE NORTHERN PLAINS ON
THURSDAY WILL SETTLE OVER THE OHIO VALLEY THURSDAY NIGHT. AN
ARCTIC COLD FRONT WILL THEN PUSH SOUTH ACROSS THE LAKE LATE FRIDAY
EVENING. A 30.6 AREA OF HIGH PRESSURE WILL THEN PASS OVER THE LAKE
SUNDAY AND SUNDAY NIGHT.