Storms

Some areas experienced record snowfalls as the storm is blamed for four deaths and power outages for about , residents. States of emergency have been declared in Virginia and North Carolina. Roy Cooper said 1 foot of snow has already fallen. Power lines are down and cars are stranded in the snow as the storm makes its way through Virginia and North Carolina. Snowfall totals could be as much as a foot in western North Carolina. Heavy rain and snow dominating the southern states as the storm makes its way to the East, stretching more than 2, miles long from Arizona to Virginia.

Airlines are offering waivers and Amtrak is announcing services changes as the dangerous system barrels across the U. A storm system will bring flooding and ice to eastern Texas, from San Antonio to Houston, this weekend. State of emergency declared after rain jammed traffic and loosened hillsides that have been affected by wildfires last month. Rain jammed traffic and loosed hillsides that have been affected by wildfires.

Colder-than-normal temperatures in the U. The burn areas in Malibu could be at risk for mudslides. Cars and trucks were seen sliding off an icy interstate in St. Louis as the storm system moved eastward. Downpours in the West are raising the risk of mudslides.

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Nearly 30 tornadoes were reported from Oklahoma to Illinois to Georgia, causing damage to roads, trees and homes. Flood watches have been issued in parts of Florida and Georgia. Nearly two dozen tornadoes damaged dozens of buildings and injured more than 30 people. The storms produced 22 reported tornadoes in Illinois.

The storms swept across the South overnight as snow piled up in the North and tornadoes touched down in Illinois. The system, which buried parts of Arizona in deep snow, has sparked severe storms in the South and winter-storm alerts in the North. Storms could lead to travel delays ABC News Senior Meteorologist Rob Marciano tracks a series of storms slamming the West Coast and moving across the country, just in time for the holiday travel rush.

Major storms bearing down on Pacific Northwest, California Lots of rainfall and flooding are possible this week. High surf warning in California Strong storm brings tofoot waves to the San Francisco area. Gorgeous snow-capped forest in northern Utah Stunning drone photography captures a wintry, snow-capped forest in northern Utah. More Northeast snow as West Coast storms form The storms in the West will make their way east over the week. Major storm slams Northeast with freezing rain ABC News chief meteorologist Ginger Zee tracks the latest weather conditions and temperatures across the country.

Wintry mix makes its way into Northeast to close out weekend Rain and some inland ice and snow are on tap for Sunday. Storm brings heavy rain to the Northeast The storm has caused heavy flooding and bad driving conditions.

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Heavy rain, potential flooding threaten East Coast over the weekend Rain is expected throughout the weekend in the eastern U. In September , the Hubble telescope — using Wide Field Planetary Camera 2 — imaged storms on Saturn generated by upwelling of warmer air, similar to a terrestrial thunderhead.

The east-west extent of the same-year [ clarification needed ] storm equalled the diameter of Earth. The storm was observed earlier in September and acquired the name Dragon Storm.

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The dust storms of Mars vary in size, but can often cover the entire planet. They tend to occur when Mars comes closest to the Sun, and have been shown to increase the global temperature. One particularly large Martian storm was exhaustively studied up close due to coincidental timing. When the first spacecraft to successfully orbit another planet, Mariner 9 , arrived and successfully orbited Mars on 14 November , planetary scientists were surprised to find the atmosphere was thick with a planet-wide robe of dust , the largest storm ever observed on Mars.

The surface of the planet was totally obscured. Mariner 9's computer was reprogrammed from Earth to delay imaging of the surface for a couple of months until the dust settled, however, the surface-obscured images contributed much to the collection of Mars atmospheric and planetary surface science. Two extrasolar planets are known to have storms: HD b [13] and HD b. The spin of the planet then creates giant swirling shock-wave storms that carry the heat aloft.

Shipwrecks are common with the passage of strong tropical cyclones. Such shipwrecks can change the course of history, [15] as well as influence art and literature. A hurricane led to a victory of the Spanish over the French for control of Fort Caroline, and ultimately the Atlantic coast of North America, in Strong winds from any storm type can damage or destroy vehicles, buildings, bridges, and other outside objects, turning loose debris into deadly flying projectiles.

Storms and lightning | AfricaWeather

Furthermore, the damage caused by tropical cyclones to buildings and dwellings can result in economic damage to a region, and to a diaspora of the population of the region. The storm surges and winds of hurricanes may be destructive to human-made structures, but they also stir up the waters of coastal estuaries, which are typically important fish breeding locales.

Cloud-to-ground lightning frequently occurs within the phenomena of thunderstorms and have numerous hazards towards landscapes and populations. One of the more significant hazards lightning can pose is the wildfires they are capable of igniting. Wildfires that occur close to urban environments can inflict damages upon infrastructures, buildings, crops, and provide risks to explosions, should the flames be exposed to gas pipes. Direct damage caused by lightning strikes occurs on occasion. Precipitation with low potential of hydrogen levels pH , otherwise known as acid rain, is also a frequent risk produced by lightning.

Distilled water , which contains no carbon dioxide , has a neutral pH of 7. Liquids with a pH less than 7 are acidic, and those with a pH greater than 7 are bases. Acid rain can damage infrastructures containing calcite or other solid chemical compounds containing carbon. In ecosystems, acid rain can dissolve plant tissues of vegetations and increase acidification process in bodies of water and in soil , resulting in deaths of marine and terrestrial organisms.

Hail damage to roofs often goes unnoticed until further structural damage is seen, such as leaks or cracks. It is hardest to recognize hail damage on shingled roofs and flat roofs, but all roofs have their own hail damage detection problems. Rarely, massive hailstones have been known to cause concussions or fatal head trauma. Hailstorms have been the cause of costly and deadly events throughout history.

One of the earliest recorded incidents occurred around the 9th century in Roopkund , Uttarakhand , India. Various hazards, ranging from hail to lightning can affect outside technology facilities, such as antennas , satellite dishes , and towers. As a result, companies with outside facilities have begun installing such facilities underground, in order to reduce the risk of damage from storms.

Substantial snowfall can disrupt public infrastructure and services, slowing human activity even in regions that are accustomed to such weather. Air and ground transport may be greatly inhibited or shut down entirely. Populations living in snow-prone areas have developed various ways to travel across the snow, such as skis , snowshoes , and sleds pulled by horses, dogs, or other animals and later, snowmobiles.

Basic utilities such as electricity , telephone lines , and gas supply can also fail. In addition, snow can make roads much harder to travel and vehicles attempting to use them can easily become stuck. The combined effects can lead to a " snow day " on which gatherings such as school, work, or church are officially canceled. In areas that normally have very little or no snow, a snow day may occur when there is only light accumulation or even the threat of snowfall, since those areas are unprepared to handle any amount of snow.

In some areas, such as some states in the United States, schools are given a yearly quota of snow days or "calamity days". Once the quota is exceeded, the snow days must be made up. Accumulated snow is removed to make travel easier and safer, and to decrease the long-term effect of a heavy snowfall. This process utilizes shovels and snowplows , and is often assisted by sprinkling salt or other chloride-based chemicals, which reduce the melting temperature of snow.

This allows the snow to be used through the summer for refrigeration and air conditioning, which requires far less electricity than traditional cooling methods.

Hail can cause serious damage, notably to automobiles , aircraft, skylights, glass-roofed structures, livestock , and most commonly, farmers' crops. Some agricultural areas depend on an accumulation of snow during winter that will melt gradually in spring, providing water for crop growth. If it melts into water and refreezes upon sensitive crops, such as oranges, the resulting ice will protect the fruit from exposure to lower temperatures. Hurricanes in the eastern north Pacific often supply moisture to the Southwestern United States and parts of Mexico.

Hail is one of the most significant thunderstorm hazards to aircraft. Strong wind outflow from thunderstorms causes rapid changes in the three-dimensional wind velocity just above ground level. Initially, this outflow causes a headwind that increases airspeed, which normally causes a pilot to reduce engine power if they are unaware of the wind shear. As the aircraft passes into the region of the downdraft, the localized headwind diminishes, reducing the aircraft's airspeed and increasing its sink rate. Then, when the aircraft passes through the other side of the downdraft, the headwind becomes a tailwind, reducing lift generated by the wings, and leaving the aircraft in a low-power, low-speed descent.

This can lead to an accident if the aircraft is too low to effect a recovery before ground contact. As the result of the accidents in the s and s, in the U. Federal Aviation Administration mandated that all commercial aircraft have on-board wind shear detection systems by Between and , wind shear directly caused or contributed to 26 major civil transport aircraft accidents in the U. Thunderstorms arise when layers of warm, moist air rise in a large, swift updraft to cooler regions of the atmosphere.

There the moisture contained in the…. By the early decades of the 19th century, it was known that storms were associated with low barometric readings, but the relation of the winds to low-pressure systems, called cyclones, remained unrecognized. William Redfield, a self-taught meteorologist from Middletown, Conn. Tornado , a small-diameter column of violently rotating air developed within a convective cloud and in contact with the ground.

Tornadoes occur most often in association with thunderstorms during the spring and summer in the mid-latitudes of both the Northern and Southern Hemispheres. These whirling atmospheric vortices can generate the strongest…. Tropical cyclone , an intense circular storm that originates over warm tropical oceans and is characterized by low atmospheric pressure, high winds, and heavy rain. Drawing energy from the sea surface and maintaining its strength as long as it remains over warm water, a tropical cyclone…. Storm s and tsunamis exert an effect on lagoons when they breach or overtop the barriers around a lagoon by raising the water level temporarily.

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Major changes in configuration can occur in a short time. Hurricanes, for instance, can cause serious effects…. Storms and catastrophic events prediction In weather forecasting: Analysis of synoptic weather reports.