Severe weather phenomena are weather conditions that are hazardous to human life and property.
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Severe weather can occur under a variety of situations, but three characteristics are generally needed: a temperature or moisture boundary, moisture, and (in the event of severe, precipitation-based events) instability in the atmosphere.
Examples[edit]
Atmospheric[edit]
Electrical storms[edit]
- Thunderstorm
- Derecho
- Multicellular thunderstorm
- Pulse storm
- Squall line
- Storm cell (single-cell)
- Supercells, rotating thunderstorms
- Lightning
Fire[edit]
- Wildfire or bushfire (ignition of wildfires is sometimes by lightning strike, especially in "dry thunderstorms")
- Firestorm
- Fire whirl, also called firenado and fire tornado
Flood[edit]
Oceans and bodies of water[edit]
- Harmful algal bloom
- High seas
- Sneaker wave
- High tides
- King tide
- Ice shove
- Rogue wave
- Seiche
- Swell (ocean)
- Tidal surge
- Storm surge
- Rip currents
- Undertow (water waves)
- Whirlpools
Snow[edit]
Ice[edit]
Rain[edit]
- Acid rain
- Blood rain
- Cold drop (Spanish: gota fría; archaic as a meteorological term), colloquially, any high impact rainfall event along the Mediterranean coast of Spain
- Drought, a prolonged water supply shortage, often caused by persistent lack of, or much reduced, rainfall
- Floods
- Rainstorm
- Red rain in Kerala (for related phenomena, see Blood rain)
- Monsoon
Surface movement[edit]
- Avalanche
- Mass wasting and landslips
Temperature[edit]
Wind[edit]
- Cyclones
- Extratropical cyclone
- "Medicane", Mediterranean tropical-like cyclones
- Polar cyclone
- Tropical cyclone, also called a hurricane, typhoon, or just "cyclone"
- Subtropical cyclone
- Australian east coast low
- Explosive cyclogenesis or weather bomb
- Dust storm
- Hurricane
- Katabatic winds
- Gale
- Monsoon
- Nor’easter
- Nor'westers
- Steam devil
- Squall
- Tornado (also colloquially referred to as a "whirlwind" or "twister")
- Landspout
- Gustnado, a "gust front tornado"
- Waterspout
- Winter storms
- Wind gust
- Windstorm
- Gust front
Other[edit]
- Heat lightning
- Zud, widespread livestock death, mainly by starvation, caused by climatic conditions
- Hayfever
Some related meteorological terms: weather front ,gust front , bow echo,Atmospheric river
Phenomena caused by severe thunderstorms[edit]
- Excessive Lightning
- Derecho
- Extreme wind (70 mph or greater)
- Downpours
- Heavy rain
- Flood, flash flood, coastal flooding
- Hail
- High winds – 93 km/h(58 mph) or higher.
- Lightning
- Thundersnow, Snowsquall
- Tornado
- Windstorm (gradient pressure induced)
- Severe thunderstorm (hailstorm, downburst: microbursts and macrobursts)
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction