Media playback is unsupported on your device

Water spout filmed over Lough Neagh in Northern Ireland

4 June 2014 Last updated at 11:18 BST

Staff at Belfast International Airport witnessed a water spout forming over Lough Neagh on Tuesday evening.

A funnel cloud usually forms during a thunderstorm or heavy shower, from a cumulonimbus cloud or a large cumulus cloud, when the atmosphere is unstable.

It consists of condensed water droplets and is associated with a column of air that rotates as it is drawn into the cloud.

If a funnel cloud touches the ground it is generally regarded as a tornado and could lift debris and even cause some minor damage on the ground - depending on the strength of convection within the cloud.

However, if the funnel cloud touches down at sea we get what is known as a waterspout.

Most watched

Copyright © 2015 BBC. The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.