What Is An Indian Summer ((install)) -

For a warm spell to be correctly classified as an “Indian Summer,” it must meet specific climatological criteria, distinguishing it from a general late-season warm front. Meteorologists generally agree on the following parameters:

So, when the haze rolls in and the thermometer hits 70 degrees in November, enjoy the flattery of the climate—but remember that winter is waiting just behind the high-pressure ridge. what is an indian summer

As the calendar turns to November, the jackets come out, the heating clicks on, and the natural world begins its slow descent into dormancy. Then, suddenly, the script flips. The wind dies down, the haze settles in, and the thermometer spikes. For a few precious days, the air feels like September again. For a warm spell to be correctly classified

The origin of the term “Indian Summer” is disputed and lacks definitive historical documentation. Several theories exist, none of which have been conclusively proven. The term entered the English lexicon in the late 18th or early 19th century, with one of the earliest written records found in a letter by French-American author J. Hector St. John de Crèvecœur in 1778. Then, suddenly, the script flips

Technically, not every sunny day in November qualifies. The National Weather Service defines an Indian Summer as a spell of unseasonably warm, dry weather occurring in autumn, specifically after the first killing frost.