Great Lakes Ice Forecasts - Text

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Great Lakes Ice Outlook (CLEICELIO)

issued Monday Wednesday Friday


120
FZUS81 KCLE 032050
ICELIO

Great Lakes Ice Outlook
National Weather Service Cleveland Ohio
450 PM EDT Fri Apr 3 2020

Active watches...warnings...and advisories on the Great Lakes can
be found at:

http://www.weather.gov/greatlakes/

5 Day Ice Discussion...

Most of the Great Lakes are ice-free. Lingering ice cover is confined to
small bays and inlets of the Upper Great Lakes, including Whitefish Bay in
Lake Superior, portions of Georgian Bay, and Lake Michigan`s Big Bay De
Noc, Little Bay De Noc, and Sturgeon Bay. An overall decay in ice cover
is expected over the next week as mild temperatures persist in the Great
Lakes region.

The Great Lakes ice analysis products can be found at:

http://www.natice.noaa.gov/products/great_lakes.html

and

http://www.glerl.noaa.gov/data/ice/#currentconditions

     MAX WIND (KNOTS) AT EACH SITE FOR THE 12 HOUR FCST PERIOD

       Location   Tonight      Sat  Sat Night      Sun  Sun Night
  West Superior      310/17    260/16    170/06    100/06    080/08
   Mid Superior      310/20    290/17    320/09    140/09    150/06
  East Superior      320/20    310/20    310/10    130/08    210/05
 North Michigan      350/16    350/12    020/06    190/05    170/05
 South Michigan      320/16    340/17    010/09    010/07    160/10
    North Huron      150/07    310/11    310/12    310/09    230/07
      Mid Huron      160/05    320/07    340/12    340/08    180/06
    South Huron      360/06    170/05    350/13    350/09    170/06
      West Erie      010/04    080/07    010/11    020/06    090/03
      East Erie      330/02    320/03    270/07    250/08    260/05
Central Ontario      040/08    160/04    270/08    270/12    300/06

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   04/04   04/05   04/06   04/07   04/08   04/09
   Duluth  17  42  25  48  34  47  36  48  34  47  31  45
Marquette  31  37  26  45  34  46  35  45  37  44  32  40
 GreenBay  36  48  26  53  36  54  40  57  42  55  35  48
Milwaukee  36  45  32  46  37  48  43  54  45  52  38  44
  Chicago  39  43  37  45  39  57  47  60  47  61  41  52
 Muskegon  40  47  33  49  36  53  43  55  42  51  37  47
   Alpena  35  46  28  45  31  47  34  46  36  47  33  43
  Detroit  34  59  40  54  37  58  45  62  48  63  43  55
   Toledo  38  59  39  56  38  60  47  64  50  64  43  55
Cleveland  37  54  40  52  38  57  45  61  49  60  43  53
  Buffalo  39  52  40  53  36  55  40  57  43  56  40  45

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 Fri Apr 3:

LOCATION           DATE   NORMAL CURRENT
----------------------------------------

   DULUTH,   MN  APR    2 2001 1677
MARQUETTE,   MI  APR    2 1788 1465
SAU_S_MAR,   MI  APR    2 1422  851
 GREENBAY,   WI  APR    2 1189  606
MILWAUKEE,   WI  APR    2  537    0
  CHICAGO,   IL  APR    2  300    0
 MUSKEGON,   MI  APR    2  298    0
   ALPENA,   MI  APR    2 1048  452
  DETROIT,   MI  APR    2  197    0
   TOLEDO,   OH  APR    2  190    0
CLEVELAND,   OH  APR    2    0    0
  BUFFALO,   NY  APR    2  440    0


NORMAL TEMPS FOR SELECTED LOCATIONS AROUND THE
GREAT LAKES FOR Fri Apr 3

LOCATION     HIGH LOW
----------------------------------------------

    DULUTH,MN  45  26
 MARQUETTE,MI  44  26
  GREENBAY,WI  51  31
 MILWAUKEE,WI  52  32
   CHICAGO,IL  55  36
  MUSKEGON,MI  51  35
    ALPENA,MI  48  28
   DETROIT,MI  55  35
    TOLEDO,OH  56  35
 CLEVELAND,OH  55  36
   BUFFALO,NY  51  33

This will be the last ice forecast for the 2019-2020 ice season. The first
freeze-up outlook will be issued the first week of November and every two
weeks thereafter until ice begins to form. At that point, the ice forecast
will resume.

$$

Freezing Degree Day Information

	CLEWRKLIO DEF 
TTAA00 KCLE 061715
 
FREEZING DEGREE DAY ACCUMULATIONS AT SELECTED STATIONS
COMPARED TO NORMAL CALCULATED ON Mon Apr 6:
 
LOCATION           DATE   NORMAL CURRENT
----------------------------------------
    
   DULUTH,   MN  APR    5 1994 1679    
MARQUETTE,   MI  APR    5 1787 1457    
SAU_S_MAR,   MI  APR    5 1414  831    
 GREENBAY,   WI  APR    5 1169  567    
MILWAUKEE,   WI  APR    5  508    0    
  CHICAGO,   IL  APR    5  262    0    
 MUSKEGON,   MI  APR    5  268    0    
   ALPENA,   MI  APR    5 1034  429    
  DETROIT,   MI  APR    5  159    0    
   TOLEDO,   OH  APR    5  151    0    
CLEVELAND,   OH  APR    5    0    0    
  BUFFALO,   NY  APR    5  412    0

Canadian Daily Ice Forecast


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FICN19 CWIS 061545
Ice forecasts for the Great Lakes issued by Environment Canada at
12:00 p.m. EDT Monday 6 April 2020 for today tonight and Tuesday.
The next scheduled forecasts will be issued at 12:00 p.m. Tuesday.

Western Lake Superior.
Open water except consolidated very thick lake ice in Black Bay and
Nipigon Bay and the eastern section of Thunder Bay.

Eastern Lake Superior.
Open water except consolidated rotten thick lake ice in a few bays.

Whitefish Bay.
3 tenths thick lake ice except consolidated rotten thick lake ice in
some bays.

Northern Lake Huron.
Open water.

North Channel.
3 tenths thick lake ice except consolidated rotten thick lake ice in
the eastern and western sections.

Georgian Bay.
Open water except consolidated rotten thick lake ice along the
northeastern shore.

Southern Lake Huron
Lake St. Clair
Lake Erie
Lake Ontario.
Ice free.

Northern Lake Michigan.
Open water.

Southern Lake Michigan.
Ice free.

Green Bay.
Open water except 2 tenths thick lake ice in Big Bay de Noc.
Consolidated thick lake ice in some northern bays.

The Lake Michigan ice description has been pared by the U.S.
National Ice Center.

End

Freeze-Up/Break-Up Outlook (NWS CLE)

National Ice Center 30 day ice outlook

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FECN19 CWIS 011800
THIRTY DAY ICE OUTLOOK FOR THE GREAT LAKES ISSUED BY ENVIRONMENT CANADA ON 1 APRIL 2020 FOR APRIL.
THE NEXT SCHEDULED BULLETIN WILL BE ISSUED ON 15 APRIL 2020.

Lake Superior

Average air temperatures were near to above normal in Lake Superior in March. Air temperatures are forecast to be above normal for April, especially so in the second half of the month.

Thunder Bay.
April 1-5:
- 1-3 tenths thick lake ice except consolidated very thick lake ice along the eastern shore.
April 6-12:
- Open water except consolidated rotten very thick lake ice along the eastern shore.
April 13-18:
- Open water except 1-3 tenths rotten very thick lake ice in the northeastern section.
April 19-30:
- Open water to ice free.

Nipigon and Black Bays.
April 1-15:
- Consolidated very thick lake ice.
April 16-25:
- 9 tenths very thick rotten lake ice.
April 26-30:
- Open water.

From Grand Marais Minnesota to the entrance to Nipigon Bay.
April 1-15:
- Open water with occasional patches of 1-3 tenths rotten thick and very thick lake ice from Thunder Bay to Nipigon Bay.
April 16-30:
- Open water.

From Grand Marais to Duluth.
April 1-30:
- Open water to ice free.

Southern Lake Superior west of Keweenaw Peninsula.
April 1-5:
- Open water except consolidated thick lake ice in Chequamegon Bay.
April 6-10:
- Open water except 7-8 tenths thick lake ice in Chequamegon Bay.
April 11-30:
- Open water.

Southern Lake Superior east of the Keweenaw Peninsula.
April 1-5:
- Open water except 1-3 tenths thick lake ice along parts of the southern shore.
April 6-30:
- Open water.

Whitefish Bay.
April 1-8:
- 4-6 tenths medium lake ice except consolidated thick lake ice in the southeastern section.
April 9-17:
- Open water except 1-3 tenths thick lake ice in the eastern section.
April 18-30:
- Open water.

From Whitefish Bay northwards to Michipicoten Bay.
April 1-7:
- 1-3 tenths medium and thick lake ice along parts of the shore.
April 8-30:
- Open water.

From Michipicoten Bay to the entrance to Nipigon Bay.
April 1-30:
- Open water.

Elsewhere in Lake Superior.
April 1-30:
- Open water.

Lake Michigan

Average air temperatures in March were near above normal. Air temperatures are forecast to be above normal in April, especially so in the second half of the month.

Green Bay.
April 1-4:
- 1-3 tenths thick lake ice except consolidated thick lake ice in the bays de Noc.
April 5-10:
- Open water except 7-8 tenths thick lake ice in the Bays de Noc.
April 11-30:
- Open water.

Northeastern Lake Michigan.
April 1-5:
- Open water except 1-3 tenths rotten thick and very thick lake ice near the Straits of Mackinac.
April 6-30:
- Open water.

Elsewhere in Lake Michigan.
April 1-31:
- Open water to ice free.

Lake Huron and Georgian Bay

Average air temperatures were above normal in March. Air temperatures are forecast be above normal for April, especially so in the second half of the month.

North Channel.
April 1-5:
- 7-8 tenths medium lake ice except consolidated thick lake ice in the eastern and western sections.
April 6-11:
- 1-3 tenths medium lake ice 7-8 tenths thick lake ice in the eastern and western sections.
April 12-21:
- Areas of 1-3 tenths thick lake ice.
April 22-30:
- Open water.

St Marys River.
April 1-5:
- Consolidated rotten thick lake ice.
April 6-11:
- 7-8 tenths thick lake ice.
April 12-15:
- 1-3 tenths thick lake ice.
April 16-30:
- Open water.

South of Manitoulin Island westward to north-western Lake Huron.
April 1-30:
- Open water.

North-western Lake Huron near the Straits of Mackinac.
April 1-3:
- Open water except 4-6 tenths medium and thick lake ice south and northwest of Bois Blanc Island.
April 4-30:
- Open water.

From north-western Lake Huron to Saginaw Bay
Saginaw Bay
The southern and eastern shore of Lake Huron
Elsewhere in Lake Huron.
April 1-30:
- Open water to ice free.

Georgian Bay.
April 1-4:
- Open water except patches of 1-3 tenths medium and thick lake ice near the northeast shore.
- Consolidated rotten thick lake ice along parts of the shore.
April 5-11:
- Open water except 7-8 tenths thick lake ice along parts of the shore.
April 12-15:
- Open water except patches of 1-3 tenths thick lake ice along parts of the shore.
April 16-30:
- Open water.

Lake Erie and Lake St. Clair

Average air temperatures were near well above normal in March. Air temperatures are forecast to be above normal for April.

Lake St Clair and the Western Basin
The rest of Lake Erie.
April 1-30:
- Ice free.

Lake Ontario

Average air temperatures were above normal in March. Air temperatures are forecast to be near normal for the April.

Northeastern Lake Ontario
Bay of Quinte
St Lawrence River
Elsewhere in Lake Ontario.
April 1-30:
- Open water to ice free.

Canadian 30-day ice outlook