Circumhorizontal arcs (loosely known as fire rainbows) are the rarest of all naturally occurring atmospheric phenomena.
21
In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
25
-40 degrees Celsius is equal to -40 degrees Fahrenheit.
96
There is a persistent storm in Venezuela that produces lightning 140 to 160 nights a year, 10 hours per day and up to 280 times per hour and has been going since at least the 16th century.
25
The winter of 1932 in the US was so cold that Niagara falls froze completely solid!
442
The speed of a typical raindrop is 17 miles per hour.
181
Moist air holds heat better than dry air.
114
Dirty snow melts faster than clean.
350