The most persistent and most spectacular thunderstorm in the world is Catatumbo Lightning. This is nearly continuous thunderstorm with up to 20,000 flashes of lightning per night, seen 140 - 160 nights per year and lasting approximately 10 hours long. It produces approximately 10% of tropospheric ozone in the world.
We do not know when started the Catatumbo Lightning started but this phenomenon has become a part of the tales of indigenous people.
Some of the most powerful rain downpours are observed in Khasi Hills of Meghalaya.
Since 1871 meteorological records have been collected in the beautiful Cherrapunji town, where have been registered several world records, such as maximum yearly rainfall (24,555 mm in 1974) and rainfall in one month (9,300 mm in July 1861). But the nearby Mawsynram village seems to get even more rain - medium annual rainfall here is 11,873 mm.
Incredible amounts of rain make this place special, it has unique plant life and unique traditions and clothing of local Khasi people.
Most likely there are several locations with more precipitation but none could be that spectacular.
3. Dome A - possibly the coldest place on the surface
The eventual coldest place on Earth is located on one of the highest places of Antarctica - on Dome A (Dome Argus). Thus far the lowest measured temperature reached here -82.5°C (July 2005) but scientists consider that it might fall even as low as -102°C.
There are several contenders for the title "The hottest place on Earth" but Gandom Beryan in Lut Desert, Kerman province is one of the few where this is proven with scientific methods.
Data collected in 2003 - 2005 by MODIS system mounted on NASA's "Aqua" satellite shows that the hottest place on Earth is located in Lut Desert, Iran. Temperature of the lifeless soil here often heats up to 71°C.
Mean annual speed of wind at Cape Denison is 80 km per hour (22 m per second). Meteorologists consider that storm begins at 24.5 km/h - thus the mean weather in Cape Denison is almost storm, and, as this is Antarctica - this storm is very very cold.
Maximum speed of the unusual katabatic wind here might reach 320 km/h.
Kifuka experiences violent thunderstorms unprecedented anywhere else in the world. Each square kilometre experiences approximately 158 lightning strikes per year - one lightning strike per 6,300 square metres. In Europe north from Alps density and frequency of lightning is 150 - 300 times lower.
Tajikistan, Kuhistoni-Badakhshon Autonomus Province
Markansu Valley is dry, lifeless valley high up in Pamir mountains.
In afternoons here starts very strong wind, which rises dust and countless whirlwinds. They often reach the strength of tornadoes and are very dangerous - there are reports about camels with all their burdens lifted by winds. People in earlier times believed that these are real, fearsome spirits - jinns.
Around the acid crater lake of Poás Volcano the acidity of fog and rain is circa 2.0 of pH and may be even less. As a result around the crater and to the west from it there has formed some 3.5 km long and 1 km wide, lifeless, naked scar surrounded by jungle.
Effects of the volcanic acid rain extend far beyond this scar. In vicinities the farm equipment, cars and home untensils become rusty, roofs of the buildings are damaged. Often tourists have been rescued from the nature trails to avoid potential health problems due to acid fog - sometimes tourists have been running out of the fog coughing and with runny eyes.
If somebody would like to get the most exciting results of astronomical research without leaving the Earth, Ridge A is the exact place to install his astronomical equipment. Astronomical images taken here would be three times sharper than in the best current observatories and their quality would be comparable with the quality of images taken in space.
Most likely no one has been in this place thus far.
The driest place on Earth is Yungay. This is highly unusual place which has attracted attention of astrobiologists due to high similarity to Mars environment. Only lately, after intense search here have been found some microorganisms in some places.
Soil here is covered with nitrogen salts falling over millions of years from the air as a result of photochemical reactions. Elsewhere in the world this nitrogen is dissolved by water and used by life, but here is no water and no life.