Madras and cold? That just sounds like a really cruel joke. Given this, NO one would buy it if we were to tell them Madras had a temperature drop, and that too below freezing point, in the month of April! Rewind 200 summers, in the last week of April 1815, the morning temperature read 11 degrees Celsius on Monday, April 24, and by Friday, April 28, it dipped to -3 degrees Celsius. We kid you not. Just for your reference, if you don't know what Madras is like and have been living under a rock, right now, at the time of writing this, the temperature is a fuming 35 degrees Celsius with 65% humidity! According to this report in The Hindu, "There are unverified reports of snow falling too but that may be an exaggeration."

MINUS THREE DEGREES IN APRIL and that too, IN MADRAS! WHY?

The cause of this extremely WTF phenomenon, according to this report, "Was the volcanic eruption of Mount Tambora in distant Indonesia. At that time, this was the tallest peak in the archipelago which formed that country, rising to a height of 4,300 m.

Lava burst forth from it on April 10 and 11, 1815, with such ferocity that the explosion killed around 12,000 people and was heard 2,000 km away."

It also boasts of the largest volcanic activity ever recorded in the world till date.

Tambora: The Eruption That Changed The World, by Gillen D’Arcy Wood, describes the event further. According to it,

“Tambora’s dust veil, serene and massive above the clouds, began its westward drift aloft the winds of the upper atmosphere. Its airy passage to India outran the thousands of waterborne vessels below bent upon an identical course, breasting the trade winds from the resource-rich East Indies to the commercial ports of the Indian Ocean. The vanguard of Tambora’s stratospheric plume arrived over the Bay of Bengal within days”.