Special Report

The Rarest Types of Weather on Earth

Source: Jeff Schmaltz, MODIS Rapid Response Team, NASA under Public Domain Dedication / GSFC / Wikimedia Commons

11. South Atlantic hurricanes

Tropical storms are incredibly rare below the equator in the South Atlantic. Only one South Atlantic hurricane has ever been recorded: Hurricane Catarina, which hit Brazil in 2004. The infrequency of storms in the South Atlantic can be attributed to both cool ocean surface temperatures and strong wind shears.

Source: Richard Heath / Getty Images

12. Kelvin-Helmholtz clouds

Resembling a series of rolling ocean waves, Kelvin-Helmholtz clouds often form when two adjacent layers of atmospheric air are moving at different speeds. Their presence may indicate atmospheric instability and turbulence for aircraft. They may also have been the inspiration behind Van Gogh’s famous painting Starry Night.

Source: artist unknown under Public Domain Dedication / Wikimedia Commons

13. St. Elmo’s fire

Most often occurring during thunderstorms at sea, St. Elmo’s Fire is a burst of plasma, or ionized air that glows blue and can cause tall structures such as ships masts or church steeples to appear to be on fire. It occurs when an imbalance in electrical charge causes molecules to rip apart.

Source: panaramka / Getty Images

14. Thundersleet

Thundersleet happens when a thunderstorm occurs simultaneously with a sleet storm. Like thundersnow, this phenomenon is extremely rare and occurs when the friction created by strong up and downdrafts causes charged particles to collide within a cloud.

Source: pr2is / Getty Images

15. Fallstreak holes

These picturesque elliptical holes that can appear in cirrocumulus or altocumulus clouds are caused by tiny water droplets within the cloud that are colder than freezing but have yet to turn to ice. Once a triggering event such as a plane flying through the clouds causes the supercooled droplets to start freezing, they rapidly crystalize and fall, leaving a hole in the cloud layer.

Sponsored: Tips for Investing

A financial advisor can help you understand the advantages and disadvantages of investment properties. Finding a qualified financial advisor doesn’t have to be hard. SmartAsset’s free tool matches you with up to three financial advisors who serve your area, and you can interview your advisor matches at no cost to decide which one is right for you. If you’re ready to find an advisor who can help you achieve your financial goals, get started now.

Investing in real estate can diversify your portfolio. But expanding your horizons may add additional costs. If you’re an investor looking to minimize expenses, consider checking out online brokerages. They often offer low investment fees, helping you maximize your profit.