Dangerous Heat and Humidity Building from the Plains to the East Coast

A strengthening ridge of high pressure will produce much above average temperatures from the Plains to the East Coast, a true summer heat wave. Highs in the 90s and triple digits combined w/ humidity and dewpoints surging into the upper 70s, if not low 80s, will create heat indices as high as 110 to 115 through this weekend. Air quality will likely be poor due to haze and little air circulation.
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Hazardous Weather Conditions

Last Update: 355 AM EDT Thu Jul 18 2019

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Detroit/Pontiac, MI Local Forecast Office

11NM WNW Sebewaing MI

Marine Zone Forecast

Today
South winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Partly cloudy in the morning, then mostly cloudy with a chance of showers and thunderstorms in the afternoon. Waves 2 feet or less.
Tonight
Southwest winds 10 to 15 knots. Partly cloudy with a chance of showers and thunderstorms. Waves 2 feet or less.
Friday
Southwest winds 10 to 15 knots. Mostly cloudy in the morning becoming partly cloudy. Waves 2 feet or less.
Friday Night
Southwest winds 10 to 15 knots becoming west 5 to 10 knots in the late evening and early morning, then becoming southwest 10 to 15 knots after midnight. Mostly clear. Waves 2 feet or less. see lake huron open lake forecast for days 3 through 5.
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ABOUT THIS FORECAST

Last Update: 355 AM EDT Thu Jul 18 2019
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