More flooding downpours are possible in the Philly region. A heat advisory is in effect through Saturday.

Skin-clinging humidity, random downpours, heat indexes in triple figures, steamy nights. Welcome to Miami North.The heat advisory for the entire region has been extended to 8 p.m. Saturday, with more random showers likely. As to when something resembling comfort returns to Philly, “That’s the million-dollar question,” said Matt Benz, senior meteorologist with AccuWeather Inc.Similar conditions could persist into the late next week, he added. Highs might not get much past 90, but with the atmosphere this steamy, head indexes up to 104 are possible. Camden County has posted a “code red” heat advisory, even though the conditions are not expected to approach the official criteria of two consecutive days of highs of at least 95 degrees.Waves of air from the Gulf Stream and the Gulf, itself, con