Category Archives: Weather

Even clouds have families

Posted on May 11, 2011 by

Clouds are grouped into families by altittude. The World Meteorological Organization (WMO) classification uses the French term ‘étage’: high étage (3-8km/2-5miles); middle étage (/2-4km1.25-2.5miles); and low étage (surface to 2km/1.25miles). Family Altitude (depending on region) Species Features A (high) 3,048-18,288m … Continue reading →

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Terrible Tornadoes

Posted on May 8, 2011 by

Recently we have seen the destructive power of yet another type of natural hazard, the tornado in both the USA and New Zealand. April 2011, was one of the most active months for Tornadoes in US history with over 180 … Continue reading →

Posted in hazards, Physical geography, Weather | Tagged , , , , | Leave a comment