Dear Tom,
In contrast to this summer, I remember some of Chicago's highest dew points when my daughter was born on July 31, 1999. Am I correct?
Ralph Bornhoeft, Green Oaks, Ill.
Dear Ralph,
Your daughter was born just one day after the city sweltered through one of its steamiest days in history. For nearly 16 hours, from the evening of July 29 to midday on the 30th, Chicago dew points remained at Amazon-rain-forest levels of 80 degrees or higher, peaking at an all-time record high of 83. At 9:33 a.m. on July 30 the official O'Hare temperature stood at 90. Combined with that record 83 dew point, the heat index soared to a suffocating 113.
Still humid but slightly drier air moved in during the afternoon of the 30th, allowing the dew point to fall to 69, but with the mercury soaring to 101 the heat index only dropped to 108.
In contrast to this summer, I remember some of Chicago's highest dew points when my daughter was born on July 31, 1999. Am I correct?
Ralph Bornhoeft, Green Oaks, Ill.
Dear Ralph,
Your daughter was born just one day after the city sweltered through one of its steamiest days in history. For nearly 16 hours, from the evening of July 29 to midday on the 30th, Chicago dew points remained at Amazon-rain-forest levels of 80 degrees or higher, peaking at an all-time record high of 83. At 9:33 a.m. on July 30 the official O'Hare temperature stood at 90. Combined with that record 83 dew point, the heat index soared to a suffocating 113.
Still humid but slightly drier air moved in during the afternoon of the 30th, allowing the dew point to fall to 69, but with the mercury soaring to 101 the heat index only dropped to 108.
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