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June 15, 2005
Extreme Heat Alert terminated
  
Dr. David McKeown, Toronto's Medical Officer of Health, has terminated the
Extreme Heat Alert called on June 10. There is no Heat Alert for today, June
15.

Five factors are used to determine whether a Heat Alert or Extreme Heat Alert
is called: temperature, dew point, cloud cover, humidity, wind speed and
direction.

A Heat Alert is called when an "oppressive" air mass is forecast and the
likelihood of weather-related mortality exceeds 65 per cent. An Extreme Heat
Alert is called when the likelihood of weather-related mortality exceeds 90 per
cent.


Media contact:

Frank Giorno
Toronto Public Health
416-338-7974



 

 

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