CTV Toronto - Frigid Lake Superior "warms" up, could set record - CTV News
"We would normally just be getting to turnover, to 39 degrees, about this time in July," Austin said. "But it happened so early this year that we're already at 59 degrees (15 degrees C; at a western Lake Superior buoy near the Apostle Islands). That's 20 degrees (11 degrees C) warmer than we should be right now."Swimming Pool Water Temperatures
The surface temperature of Lake Superior could reach record highs by mid-August, the typical peak for water temperature, they said.
In 1998, a warm year, the lake peaked at 68 degrees F (20 degrees C), "and we're well on our way to that, or higher," Austin said. That compares with a high of just 54 degrees F (12 degrees C) in August 1996, a cool year.
Climate change is responsible for the warming effect, the researchers said.
The American Red Cross suggests that 78° F is appropriate for swimming. But, this temperature is ideal for competitive swimming and is quite chilly for regular swimming. Water at 78° F is ideal for competitive swimming as the cold water promotes heavier breathing and faster heartbeat in order to keep warm. Even for the most adventurous swimmers, 65° F is unbearably cold.
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1 comment:
Okay - we have had a southerly wind off and on for weeks. That blows the surface water north. Plus we have several days of unusually warm (80+ degree) weather. That makes the surface water warm. Warm or not, we swim in the summer.
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