Great Lakes Ice Forecasts - Text

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Great Lakes Ice Outlook (CLEICELIO)

issued Monday Wednesday Friday


544
FZUS81 KCLE 232109
ICELIO

Great Lakes Ice Outlook
National Weather Service Cleveland Ohio
509 PM EDT Mon Apr 23 2018

Active watches...warnings...and advisories on the Great Lakes can
be found at...http://www.crh.noaa.gov/greatlakes/?c=haz&l=gl&p=a

5 Day Ice Discussion...

The remaining ice on the northern Great Lakes will continue to slowly
erode but a reinforcing cold front will cross the northern lakes Tuesday
morning with a second cold front on Thursday. Temperatures will return to
near or below normal for much of the next 5 days. The ice deterioration
will occur mainly during the daylight hours and the melting will continue
to be painfully slow. North winds will peak at 20 to 25 knots following
the front Tuesday and Tuesday night. Some shifting of the ice is possible
especially in areas exposed to the north wind and tracks may not hold.
Winds should lighten up for a short while on Wednesday but pick up again
Thursday with the next cold front.

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      Tue  Tue Night      Wed  Wed Night
  West Superior      020/11    010/12    010/11    200/10    210/12
   Mid Superior      350/12    350/17    010/15    230/11    200/13
  East Superior      350/11    350/19    010/18    320/11    190/12
 North Michigan      013/05    360/17    340/20    360/12    030/09
 South Michigan      130/08    360/19    010/24    350/21    200/11
    North Huron      180/12    170/11    010/18    340/14    330/12
      Mid Huron      180/10    130/07    360/21    350/19    320/12
    South Huron      120/09    140/07    340/20    340/21    320/11
      West Erie      100/13    070/12    340/14    340/14    290/09
      East Erie      180/09    140/09    050/07    280/10    250/13
Central Ontario      170/12    100/12    100/11    320/20    300/18

A full graphical forecast of wind on the Great Lakes can be found at:
http://www.crh.noaa.gov.greatlakes/?c=map&l=gl&p=a&m=ws

        Temperature  Forecasts for Selected Cities

 Location   04/24   04/25   04/26   04/27   04/28   04/29
   Duluth  41  52  31  56  38  53  31  53  33  61  35  59
Marquette  37  46  31  40  30  50  32  39  30  44  32  48
 GreenBay  34  60  34  52  33  59  35  52  34  56  36  59
Milwaukee  40  53  39  47  35  56  38  48  38  51  40  54
  Chicago  42  49  40  47  36  56  41  49  38  52  41  55
 Muskegon  47  58  39  49  34  53  38  49  35  52  36  54
   Alpena  37  55  37  45  31  52  35  49  33  49  33  51
  Detroit  48  54  43  51  37  56  41  56  38  54  39  56
   Toledo  49  56  43  53  37  56  41  55  37  55  39  60
Cleveland  50  59  43  49  38  52  41  54  39  50  39  54
  Buffalo  47  61  46  54  38  52  39  58  39  52  37  52

A full graphical forecast of the Great Lakes forecast temperatures
can be found at http://www.crh.noaa.gov/greatlakes/?c=map&l=gl&p=a&m=te

FREEZING DEGREE DAY ACCUMULATIONS AT SELECTED STATIONS
COMPARED TO NORMAL CALCULATED ON Mon Apr 23:

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

   DULUTH,   MN  APR   22 1865 2351
MARQUETTE,   MI  APR   22 1685 2155
SAU_S_MAR,   MI  APR   22 1271 1507
 GREENBAY,   WI  APR   22  970 1139
MILWAUKEE,   WI  APR   22  285  410
  CHICAGO,   IL  APR   22    0  211
 MUSKEGON,   MI  APR   22   28  309
   ALPENA,   MI  APR   22  870 1164
  DETROIT,   MI  APR   22    0  171
   TOLEDO,   OH  APR   22    0  148
CLEVELAND,   OH  APR   22    0    0
  BUFFALO,   NY  APR   22  183  588


NORMAL TEMPS FOR SELECTED LOCATIONS AROUND THE
GREAT LAKES FOR Mon Apr 23

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

    DULUTH,MN  55  33
 MARQUETTE,MI  54  34
  GREENBAY,WI  55  33
 MILWAUKEE,WI  61  39
   CHICAGO,IL  63  42
  MUSKEGON,MI  59  41
    ALPENA,MI  55  33
   DETROIT,MI  63  42
    TOLEDO,OH  64  41
 CLEVELAND,OH  63  42
   BUFFALO,NY  60  41

$$

Freezing Degree Day Information

	CLEWRKLIO DEF 
TTAA00 KCLE 241715
 
FREEZING DEGREE DAY ACCUMULATIONS AT SELECTED STATIONS
COMPARED TO NORMAL CALCULATED ON Tue Apr 24:
 
LOCATION           DATE   NORMAL CURRENT
----------------------------------------
    
   DULUTH,   MN  APR   23 1854 2329    
MARQUETTE,   MI  APR   23 1675 2139    
SAU_S_MAR,   MI  APR   23 1259 1492    
 GREENBAY,   WI  APR   23  955 1124    
MILWAUKEE,   WI  APR   23  269  393    
  CHICAGO,   IL  APR   23    0  190    
 MUSKEGON,   MI  APR   23   10  284    
   ALPENA,   MI  APR   23  857 1156    
  DETROIT,   MI  APR   23    0  146    
   TOLEDO,   OH  APR   23    0  124    
CLEVELAND,   OH  APR   23    0    0    
  BUFFALO,   NY  APR   23  166  562

Canadian Daily Ice Forecast


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FICN19 CWIS 241545
Ice forecasts for the Great Lakes issued by Environment Canada at
12:00 p.m. EDT Tuesday 24 April 2018 for today tonight and
Wednesday.
The next scheduled forecasts will be issued at 12:00 p.m. Wednesday.

Western Lake Superior.
1 tenth thick lake ice except 5 tenths thick lake ice including 1
tenth very thick lake ice along parts of the southern and
northwestern shores. Consolidated thick lake ice including 4 tenths
very thick lake ice in bays along the north shore.

Eastern Lake Superior.
Open water except 7 tenths thick lake ice near parts of the southern
and eastern shores.

Whitefish Bay.
9 tenths thick lake ice including 1 tenth very thick lake ice except
consolidated thick lake ice including 2 tenths very thick lake ice
in eastern bays.

Northern Lake Huron.
Open water except 1 tenth thick lake ice in strips and patches near
the northern shore.

Southern Lake Huron.
Open water.

North Channel.
9 tenths rotten thick lake ice including 2 tenths rotten very thick
lake ice.

Georgian Bay.
Open water except 3 tenths thick lake ice along parts of the
northern and eastern shores.

Lake St. Clair
Western Lake Erie.
Ice free.

Eastern Lake Erie.
Open water except 3 tenths rotten thick lake ice along parts of the
eastern shore.

Lake Ontario.
Ice free.

Northern Lake Michigan.
Open water except 3 tenths thick lake ice northeast of Beaver Island
and along the southern shore of the Straits of Mackinac.
Consolidated thick lake ice in Little Traverse Bay.

Southern Lake Michigan.
Ice free.

Green Bay.
Consolidated thick lake ice in the Bays de Noc. 6 tenths thick lake
ice south of Chambers Island.

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 181800
THIRTY DAY ICE OUTLOOK FOR THE GREAT LAKES ISSUED BY ENVIRONMENT CANADA ON 18 APRIL 2018 FOR MID-APRIL TO MID-MAY. THE NEXT SCHEDULED BULLETIN WILL BE ISSUED ON 2 MAY 2018.

Lake Superior

Average air temperatures were below normal in the first half of April. Air temperatures will be near normal for mid-April to mid-May.

Thunder Bay.
April 19 to 25.
- 1 to 3 tenths of rotten very thick lake ice except consolidated rotten very thick lake ice along the shores.
April 26 to May 5.
- 1 to 3 tenths of rotten very thick lake ice except consolidated rotten very thick lake ice in the northeastern section.
May 6 to 19.
- Open water except 1 to 3 tenths of rotten very thick lake ice in the northeastern section.

Nipigon and Black Bays.
April 19 to May 10.
- Consolidated rotten very thick lake ice.
- 1 to 3 tenths of rotten very thick lake ice near the entrances to the bays.
May 11 to 18.
- 9 to 10 tenths of rotten very thick lake ice.

From Grand Marais Minnesota to the entrance to Nipigon Bay.
April 19 to 25.
- Open water except 1 to 3 tenths of rotten thick lake ice between Thunder Bay and Nipigon Bay, and near Isle Royale.
April 26 to May 5.
- Open water except isolated patches of rotten thick lake ice along the shore.
May 6 to 19.
- Open water to ice free.

From Grand Marais to Duluth.
April 19 to May 19.
- Open water to ice free.

Southern Lake Superior west of Keweenaw Peninsula.
April 19 to 25.
- Open water except 9 to 10 tenths of rotten thick lake ice along the shore.
- Consolidated rotten very thick lake ice in Chequamegon Bay and near the Apostle Islands.
April 26 to May 5.
- Open water except 7 to 8 tenths of rotten thick and very thick lake ice in the Apostle Islands and along sections of the shore.
- Consolidated rotten very thick lake ice in Chequamegon Bay.
May 6 to 15.
- Open water except 4 to 6 tenths of rotten very thick lake ice in the Apostle Islands and Chequamegon Bay.
- Isolated patches of 1 to 3 tenths of rotten thick lake ice along the shore.
May 16 to 19.
- Open water to ice free.

Southern Lake Superior east of the Keweenaw Peninsula.
April 19 to 25.
- Open water except 9 to 10 tenths of medium and thick lake ice along the shore.
- Consolidated rotten thick lake ice in isolated bays and inlets.
April 26 to 30.
- Open water except 4 to 6 tenths of rotten thick lake ice along the shore.
May 1 to 10.
- Open water except 1 to 3 tenths of rotten thick lake ice along the shore.
May 11 to 19.
- Open water to ice free.

Whitefish Bay.
April 19 to 25.
- 9 to 10 tenths of rotten thick and very thick lake ice except consolidated very thick lake ice over the eastern and southern sections.
April 26 to 30.
- 4 to 6 tenths of rotten thick and very thick lake ice except consolidated rotten very thick lake ice over the northeastern section.
May 1 to 10.
- Open water except 1 to 3 tenths of rotten very thick lake ice in the northeastern section.
May 11 to 19.
- Open water.

From Whitefish Bay northwards to Michipicoten Bay.
April 19 to 25.
- 1 to 3 tenths of rotten thick lake ice except consolidated thick lake ice along the shore from Whitefish Bay to Cape Gargantua.
April 26 to 30.
- Open water except 7 to 8 tenths of rotten thick lake ice along the shore from Whitefish Bay to Cape Gargantua.
May 1 to 5.
- Open water except 1 to 3 tenths of rotten thick lake ice along the shore from Whitefish Bay to Cape Gargantua.
May 6 to 19.
- Open water to ice free.

From Michipicoten Bay to the entrance to Nipigon Bay.
April 19 to May 19.
- Open water to ice free.

Elsewhere in Lake Superior.
April 19 to May 19.
- Open water to ice free.

Lake Michigan

Average air temperatures were below normal in the first half of April. Air temperatures will be near normal for mid-April to mid-May.

Green Bay.
April 18 to 25.
- Open water except 7 to 8 tenths of rotten thick lake ice over the southern section.
- Consolidated rotten thick lake ice in the Bays de Noc.
April 26 to May 5.
- Open water except 4 to 6 tenths of rotten thick lake ice over the southern section.
- 7 to 8 tenths of rotten thick lake ice in the Bays de Noc.
May 6 to 19.
- Open water to ice free.

Northeastern Lake Michigan.
April 19 to 25.
- Open water except 1 to 3 tenths of rotten thick lake ice east of Beaver Island.
April 26 to May 19.
- Open water to ice free.

Elsewhere in Lake Michigan.
April 19 to May 19.
- Ice free.

Lake Huron and Georgian Bay

Average air temperatures were below normal in the first half of April. Air temperatures will be near normal for mid-April to mid-May.

North Channel.
April 19 to 25.
- Consolidated rotten very thick lake ice.
April 26 to May 5.
- 7 to 8 tenths of rotten thick and very thick lake ice except consolidated rotten very thick lake ice in the eastern and western sections.
May 6 to 10.
- 4 to 6 tenths of rotten thick and very thick lake ice.
May 11 to 19.
- Open water.

St Marys River.
April 19 to 25.
- Consolidated rotten thick and very thick lake ice.
- 4 to 6 tenths of rotten thick and very thick lake ice in isolated sections of the river.
April 26 to May 5.
- 7 to 8 tenths of rotten thick and very thick lake ice.
May 6 to 10
- 1 to 3 tenths of rotten very thick lake ice.
May 11 to 19.
- Open water.

South of Manitoulin Island westward to north-western Lake Huron.
April 19 to May 19.
- Open water to ice free.

North-western Lake Huron near the Straits of Mackinac.
April 19 to 25.
- Open water except 1 to 3 tenths of rotten thick lake ice from the Straits of Mackinac to south of Bois Blanc Island.
April 26 to May 19.
- Open water to ice free.

From north-western Lake Huron to Saginaw Bay.
April 19 to May 19.
- Open water to ice free.

Saginaw Bay.
April 19 to May 19.
- Ice free.

The southern and eastern shore of Lake Huron.
April 19 to May 19.
- Open water to ice free.

Georgian Bay.
April 19 to 25.
- Open water except consolidated rotten thick lake ice in isolated bays and inlets along the northern and eastern shores.
April 26 to May 5.
- Open water except 1 to 3 tenths of rotten thick lake ice along the eastern shore.
May 6 to 19.
- Open water to ice free.

Elsewhere in Lake Huron.
April 19 to May 19.
- Open water to ice free.

Lake Erie and Lake St. Clair

Average air temperatures were below normal in the first half of April. Air temperatures will be near normal for mid-April to mid-May.

Lake St Clair and the Western Basin.
April 19 to May 19.
- Ice free.

The rest of Lake Erie.
April 19 to 25.
- Open water except 7 to 8 tenths of rotten thick lake ice along the shore near Dunkirk to Buffalo.
April 26 to 30.
- Open water except 1 to 3 tenths of rotten thick lake ice along the shore near Dunkirk to Buffalo.
May 1 to 19.
- Open water to ice free.

Lake Ontario

Average air temperatures were below normal in the first half of April. Air temperatures will be near normal for mid-April to mid-May.

Northeastern Lake Ontario.
April 19 to May 19.
- Ice free.

Bay of Quinte.
April 19 to May 19.
- Ice free.

St Lawrence River.
April 19 to May 19.
- Ice free.

Elsewhere in Lake Ontario.
April 19 to May 19.
- Ice free.

END

Canadian 30-day ice outlook