Diseases have a detrimental effect on plants and animals and impact on market access and agricultural production. Diseases include micro-organisms, disease agents (bacteria, fungi and viruses), infectious agents, parasites and genetic disorders. Western Australia is free from some of the world's major agricultural and livestock diseases.
Landslide: a landslide is movement of soil,mud, rock and other debris rolling down a mountain Avalanche: An avalanche is a great amount of snow and ice which breaks off of a side of a mountain What Causes Avalanche, Mudslide & Landslide Avalanche: 1. Low-flying aircraft 2. Snow Storms 3. Explosions 4. Loud Noises 5. Heavy Snow falls 6.
Blizzard . By definition, a blizzard is an extended, severe snowstorm. In order to qualify as a blizzard, winds have to be at least 35mph and rage for a longer period of time—at least three hours or more. The amount of snowfall has little to do with a storm qualifying as a snowstorm, but rather the intensity of the wind and length of time.
What are damaging winds? Damaging winds are often called “straight-line” winds to differentiate the damage they cause from tornado damage. Strong thunderstorm winds can come from a number of different processes. Most thunderstorm winds that cause damage at the ground are a result of outflow generated by a thunderstorm downdraft. Damaging winds are classified as those exceeding 50-60 mph.
The word ‘ Drought ’ is always a difficult one to define, because it is often used in more than one context. In simple terms, it is the absence of water for a long period of time, at a place where it is considered ‘not normal’ compared to its usual conditions.
Drought can simply be defined as extended periods of precipitation shortage, normally for a season or more resulting in water deficiency for some human activities or environmental sustainability. Human activities such as farming, irrigation, or domestic uses of water are normally highly impacted during droughts.
Flooding is a lot more than that. Flooding is extremely dangerous and has the potential to wipe away an entire city, coastline or area, and cause extensive damage to life and property. It also has great erosive power and can be extremely destructive, even if it is a foot high.
Flash floods are the most dangerous kind of floods, because they combine the destructive power of a flood with incredible speed and unpredictability. Flash floods occur when excessive water fills normally dry creeks or river beds along with currently flowing creeks and rivers, causing rapid rises of water in a short amount of time.
Hail is a natural disaster and it can prove fatal also. Many do not believe this or even think about this but it is possible; and that is why it is always wise to be indoors when it a hail storm brews. In most cases, it will come to nothing but there are going to be some cases in which the hail becomes deadly.
• A Hurricane/Tropical Storm WATCH means there is a threat of hurricane/tropical storm conditions within 36 hours. People in a watch area should review their hurricane plans (Family Disaster Plan, Disaster Supplies Kit, evacuation routes), keep informed, and be ready to act if a warning is issued.
A limnic eruption, also referred to as a lake overturn, is a rare type of natural disaster in which dissolved carbon dioxide (CO 2) suddenly erupts from deep lake waters, forming a gas cloud that can suffocate wildlife, livestock, and humans. Such an eruption may also cause tsunamis in the lake as the rising CO 2 displaces water.
Storms, a natural phenomenon caused by violent atmospheric disturbances occurring over land and water, represent a major potential threat to the entire population of the earth because of their prevalence, the size of areas devastated and the scale of the resulting damage.
Tropical cyclones can produce heavy rainfall and sustained winds that can exceed 155 miles per hour (249 km/hr). The official seasons during which cyclones are predicted to become destructive hurricanes and typhoons are different in different areas, but the fact is that, at any time of year, a cyclone is capable of becoming a dangerous hazard.
A tsunami (from Japanese: 津波, "harbour wave"; English pronunciation: / t s uː ˈ n ɑː m i / tsoo-NAH-mee) or tidal wave, also known as a seismic sea wave, is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake.
The pyroclastic flow is formed from rock fragments following a volcanic explosion , the flow surges down the flanks of the volcano at speeds of up to several hundred kilometres per hour, to distances often up to 10km and occasionally as far as 40 km from the original disaster site.
Different wildfires burn differently. Fires that burn organic material in the soil are called ground fires. This is a slower burning fire, usually under litter or under vegetation. They burn by glowing combustion. Some fires burn on the surface of the ground. They burn dry leaves, broken twigs and branches and other materials on the ground.