Event Expanded – Heat Advisory. Calvert and St. Marys Counties. Heat index values around 105° are expected Wednesday from 11 AM to 8 PM EDT. An Extreme Heat Watch is also in effect Thursday morning through Friday evening with heat index values 110 to 115° possible. Heat illness risk rises with high humidity. Dangerous heat may linger into Saturday.
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John Bordash
View More PostsJB Weather forecaster John Bordash is working around the clock to provide Southern Maryland, and neighboring communities, with accurate and reliable weather information.
