lunar rainbows and so much more

natural phenomenons:

• maelstrom in Pirates of the Caribbean At World's End, towards the end when the two ships are spinning around, the whirlpool that the ships are swirling in is called a maelstrom, which means crushing current

• fire rainbow the term ‘fire rainbow’ is really misleading; the correct term is circum horizon arc. it’s basically an ice halo formed by ice crystals located very high, in the cirrcus clouds. this huge flamboyant lovely display of colors is really not as rare as you might think, and how often it appears depends mostly on location, and especially latitude. for example, in the US it can be seen several times a summer in each year in the same place, but in central or northern europe it’s very rare.
• moon rainbow we’ve all (probably) seen rainbows, at day. but how many of us have seen rainbows at night? yeah, this can actually happen, due to the light produced by the moon (thus moonbow, or lunar rainbow or white rainbow). of course the light emitted by the moon is much much fainter than that of the sun, so as a result, so is the formed rainbow; most of the time, it’s even hard for the human eye to separate the colors there.
• supercells are rotating updrafts within severe thunderstorms; they’re big, and bloody scary. they can appear anywhere in the world given the right meteorological conditions, but most of the times they appear in the great plains of the US, last generally 2-3 hours and they sometimes split in 2, with the two resulting storms going in opposite directions.
• ice circles they’re very rare, appearing only in slow moving waters from cold climates such as northern europe or america, but some have also been spotted in britain, including a huge one bigger than 3 meters. there are two types of ice circles.