Lake Erie Winds: Latest HAB Bulletin Indicates Continuing Spread of Algae Bloom Over Western Lake Erie

Friday, August 26, 2011

Latest HAB Bulletin Indicates Continuing Spread of Algae Bloom Over Western Lake Erie

Nowcast position of Microcystis spp. bloom for August 25 using GLCFS modeled currents to move the bloom from the August 23 image. Please note: Colored pixels in Sandusky Bay are due to a mixed bloom dominated by Planktothrix spp. (Courtesy NOAA)

The last Lake Erie Harmful Algal Bloom Bulletin issued by NOAA, just issued, reveals that the Microcystis bloom that began at the beginning of summer continues to fan out across the lake, engulfing most of the western basin. Satellite imagery for the first time shows the bloom spreading beyond Pelee Point and Sandusky Bay. Here are the particulars of the HAB Bulletin.

Conditions: A confirmed Microcystis bloom persists in Western Lake Erie.
Analysis: A large Microcystis bloom has spread throughout the western basin of Lake Erie. Since last Thursday the bloom has moved further North and East and seems to extend past Pelee Point on the north shore, and past Sandusky Bay to the south. Transport over the weekend is expected to move the bloom further to the east. Winds today may cause the surface expression of the bloom to decrease, followed by further intensification over the weekend.

You can download a PDF of the actual bulletin here or go to the HAB website.

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About Lake Erie

9,940 sq mi (25,745 sq km), 241 mi (388 km) long and from 30 to 57 mi (48-92 km) wide, bordered on the N by S Ont., Canada, on the E by W N.Y., on the S by NW Pa. and N Ohio, and on the W by SE Mich. and NW Ohio.; fourth largest of the Great Lakes. It is 572 ft (174 m) above sea level with a maximum depth of 210 ft (64 m), making it the shallowest of the Great Lakes and the only one with a floor above sea level. It is part of the Great Lakes-St. Lawrence Seaway system and is linked to Lake Huron by the Detroit River, Lake St. Clair, and St. Clair River, and with Lake Ontario by the Niagara River (Lake Erie's only natural outlet) and the Welland Canal. The New York State Canal System links the lake with the Hudson River. Several small rivers, including the Maumee, Sandusky, and Cuyahoga, flow into the lake from the south; the Grand River enters from Ontario. Lake Erie is partially icebound in winter and is usually closed to navigation from mid-December to the end of March. Rich agricultural lands border the Canadian shore, where the chief towns are Port Colborne and Port Stanley. The principal U.S. cities on the lake are Buffalo, Erie, Cleveland, and Toledo; all are ports with heavy industry. Untreated industrial and municipal wastes from lakeshore cities-and from Detroit, whose wastes enter the western end of the lake-polluted the waters and rendered surrounding areas foul smelling. A U.S.-Canadian pact (1972) ended the discharge of contaminating materials into the water, and the environmental damage has since abated. Numerous recreation facilities are provided at national (Point Pelee and Fort Malden in Canada), provincial, and state parks located on the lake's islands and shores. The first European to see the lake was French explorer Louis Jolliet in 1669. The British and the French, and later the British and the Americans, fought for its control. The battle of Lake Erie (Sept. 10, 1813), a naval engagement in the War of 1812, led successfully by the U.S. leader Oliver H. Perry against the British, was fought at Put-in Bay. (Courtesy the Columbia Encyclopedia)

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Friday, August 26, 2011

Latest HAB Bulletin Indicates Continuing Spread of Algae Bloom Over Western Lake Erie

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