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Great Lakes Ice Outlook
National Weather Service Cleveland Ohio
458 PM EST Mon Mar 3 2025
Active watches...warnings...and advisories on the Great Lakes can
be found at:
http://www.weather.gov/greatlakes/
5 Day Ice Discussion...
Total ice coverage across the Great Lakes region is up slightly to 27%.
However, the distribution of ice across the region has changed with this
past weekend's low pressure system and strong winds. Large openings in the
ice have occurred on Lake Erie, western Lake St. Clair, and Green Bay.
Meanwhile, ice coverage has increased over Lake Superior with ice along
the entire southern shoreline. Otherwise, fast ice remains in the typical
spots for early March including Southwest Lake Superior around the
Apostle Islands and Southeast Lake Superior and Whitefish Bay into the St.
Mary's River and the SOO Locks. Fast ice remains in southern Green Bay
and the Bays de Noc along with northern Lake Michigan into the Straits of
Mackinac. Finally, fast ice also is present in Saginaw Bay, the eastern
two-thirds of Lake St. Clair, and the far eastern portions of Lake Erie.
A strong low pressure system will develop over the central Plains states
tonight and deepen significantly as it moves northeast toward the Great
Lakes. Temperatures ahead of this system on Tuesday and Wednesday will be
well above normal and winds will be strong, which will diminish ice
coverage and may cause significant breaks over the southern lakes. As the
low departs the region on Thursday, winds will shift to the northwest and
temperatures closer to normal will return. This will favor ice development
mainly over the northern lakes. Colder air will be reinforced from the
north toward the end of the week with high pressure and could maintain
decent conditions for ice growth in the northern lakes. Meanwhile, a low
pressure system will move through the Ohio Valley and could stir up a
little wind and more marginal temperatures to prohibit much new ice from
forming in the southern lakes late in the week.
The Great Lakes ice analysis products can be found at:
http://usicecenter.gov/Products/GreatLakesHome
and
http://www.glerl.noaa.gov/data/ice/#currentconditions
MAX WIND (KNOTS) AT EACH SITE FOR THE 12 HOUR FCST PERIOD
Location Tonight Tue Tue Night Wed Wed Night
West Superior 050/16 040/28 020/33 010/26 320/11
Mid Superior 060/11 050/27 030/36 010/34 340/19
East Superior 200/13 060/22 030/29 020/30 340/21
North Michigan 190/14 190/12 010/19 350/29 330/21
South Michigan 190/18 180/19 110/19 330/32 320/25
North Huron 200/14 190/14 100/20 340/24 330/29
Mid Huron 200/15 180/16 140/22 320/23 320/29
South Huron 190/17 180/17 140/25 300/22 310/27
West Erie 180/13 190/14 140/20 240/22 290/27
East Erie 190/11 190/10 160/20 220/21 250/23
Central Ontario 190/15 160/15 140/19 150/17 230/24
A full graphical forecast of wind on the Great Lakes can be found at:
http://www.weather.gov/greatlakes/
Temperature Forecasts for Selected Cities
Location 03/04 03/05 03/06 03/07 03/08 03/09
Duluth 33 37 26 32 17 39 17 37 19 41 24 44
Marquette 32 39 30 32 21 32 21 30 15 32 21 37
GreenBay 37 46 35 37 23 39 24 39 21 39 24 44
Milwaukee 39 48 39 46 24 41 30 39 26 41 28 46
Chicago 41 48 44 50 28 42 33 41 32 42 32 48
Muskegon 35 46 41 50 28 35 30 37 26 37 28 37
Alpena 32 41 35 41 19 32 23 35 19 32 19 35
Detroit 37 50 44 59 30 41 30 44 28 41 28 44
Toledo 37 53 46 59 30 39 30 46 32 42 28 46
Cleveland 37 57 48 59 32 37 30 44 32 41 28 42
Buffalo 28 50 41 57 33 37 26 37 26 35 23 35
A full graphical forecast of the Great Lakes forecast temperatures
can be found at http://www.weather.gov/greatlakes/
FREEZING DEGREE DAY ACCUMULATIONS AT SELECTED STATIONS
COMPARED TO NORMAL CALCULATED ON Mon Mar 3:
LOCATION DATE NORMAL CURRENT
----------------------------------------
DULUTH, MN MAR 2 1685 1760
MARQUETTE, MI MAR 2 1457 1405
SAU_S_MAR, MI MAR 2 1174 1075
GREENBAY, WI MAR 2 973 934
MILWAUKEE, WI MAR 2 469 562
CHICAGO, IL MAR 2 357 428
MUSKEGON, MI MAR 2 320 357
ALPENA, MI MAR 2 871 822
DETROIT, MI MAR 2 351 437
TOLEDO, OH MAR 2 211 357
CLEVELAND, OH MAR 2 109 358
BUFFALO, NY MAR 2 420 436
NORMAL TEMPS FOR SELECTED LOCATIONS AROUND THE
GREAT LAKES FOR Mon Mar 3
LOCATION HIGH LOW
----------------------------------------------
DULUTH,MN 31 13
MARQUETTE,MI 31 15
GREENBAY,WI 37 19
MILWAUKEE,WI 39 24
CHICAGO,IL 43 26
MUSKEGON,MI 39 24
ALPENA,MI 35 16
DETROIT,MI 42 25
TOLEDO,OH 43 25
CLEVELAND,OH 43 26
BUFFALO,NY 39 23
$$
Sefcovic