A heat wave, the first of 2013, is yielding Chicago its hottest week so far this summer. The worst of the heat is expected to arrive Thursday and Friday. As a result, the National Weather Service has issued a Heat Advisory for the entire Chicagoland area that will go into effect from 11am CDT Thursday to 7pm CDT Friday.
A large and strong dome of hot air associated with a strong upper level ridge will continue to move westward or retrograde from the East Coast to the Ohio Valley and Great Lakes region Thursday. The heat combine with high moisture or dewpoint values will result in heat indices in the 100ºF-110ºF range Thursday and Friday.
During this time it is important to follow heat safety guidelines. Makes sure to drink plenty of fluids. Wear light and loose clothing. Reschedule outdoor activities to early morning or after sunset.
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