What is a mound of water driven toward coastal areas by hurricane winds?
At the center of a hurricane, air pressure is low. Low air pressure causes a slight bulge in the ocean, which adds to the mound of water that causes storm surge.
What are the stages in the life cycle of a thunderstorm?
Thunderstorms have three stages in their life cycle: The developing stage, the mature stage, and the dissipating stage. The developing stage of a thunderstorm is marked by a cumulus cloud that is being pushed upward by a rising column of air (updraft).
Why is a sea-breeze thunderstorm considered a type of air mass thunderstorm?
Why is a sea-breeze thunderstorm considered a type of air-mass thunderstorm? A sea-breeze thunderstorm is considered an air mass thunderstorm because sea-breeze thunderstorms are caused by temperature differences, and air-mass thunderstorms extreme temperature differences, They are caused by unequal heating.
What are often associated with very severe thunderstorms called supercells?
Tornadoes that come from a supercell thunderstorm are the most common, and often the most dangerous. A rotating updraft is a key to the development of a supercell, and eventually a tornado.
What is storm surge in a hurricane?
Storm surge is an abnormal rise of water generated by a storm, over and above the predicted astronomical tide. • It's the change in the water level. that is due to the presence of the. storm.
What are the three main stages of a tropical cyclone?
The development of cycle of tropical cyclones may be divided into three stages. a) Formation and initial development (b) Full maturity (c) Modification or decay!
What does thunderstorm mean?
thunderstorm. / (ˈθʌndəˌstɔːm) / noun. a storm caused by strong rising air currents and characterized by thunder and lightning and usually heavy rain or hail.
What is the cumulus stage?
The Cumulus Stage When warm, moist air moves upward in an updraft, puffy cumulus clouds may form in the atmosphere. The moisture in the air condenses into water droplets as it rises. The cloud will continue to grow as long as warm air from below continues to rise.
What is the term for a thunderstorm that forms a line that can extend hundreds of miles?
Multi-cell Line (Squall Line) Sometimes thunderstorms will form in a line which can extend laterally for hundreds of miles. These "squall lines" can persist for many hours and produce damaging winds and hail.
What is orographic thunderstorm?
Orographic thunderstorms are caused by air that is forced up by a mountain or hillside. Air mass thunderstorms are the result of localized convection in an unstable air mass. Frontal thunderstorms occur along boundaries of weather fronts (e.g. cold front).
What is microburst storm?
A microburst is a localized column of sinking air (downdraft) within a thunderstorm and is usually less than or equal to 2.5 miles in diameter. Microbursts can cause extensive damage at the surface, and in some instances, can be life-threatening.
What is a supercell in weather?
Supercells are storms — usually, but not necessarily, thunderstorms — that contain updrafts that rotate about a vertical axis. This rotation is derived from shear in the environmental wind field (that is, a change in wind direction and / or speed with height) surrounding the storm as it begins to grow.
What is a tidal flood called?
Tidal flooding, also known as sunny day flooding or nuisance flooding, is the temporary inundation of low-lying areas, especially streets, during exceptionally high tide events, such as at full and new moons.
What is the difference among cyclones hurricanes and typhoons?
Called hurricanes when they develop over the North Atlantic, central North Pacific, and eastern North Pacific, these rotating storms are known as cyclones when they form over the South Pacific and Indian Ocean, and typhoons when they develop in the Northwest Pacific.
What are the 4 stages of a cyclone?
Meteorologists have divided the development of a tropical cyclone into four stages: Tropical disturbance, tropical depression, tropical storm, and full-fledged tropical cyclone.
What is mature stage of tropical cyclone?
Three basic features at the mature stage are observed: the reduction of intensity, the outward expansion of the eyewall, and the increase of tangential wind in the outer primary circulation. Globally, about a quarter of tropical cyclones undergo the mature stage.
What is lightning Class 8?
Lightning is an electric discharge in the atmosphere between oppositely charged clouds (or between charged cloud and the earth). Lightning is produced by the electric charges in the sky.
What is a thunderstorm Class 7?
A thunderstorm is a storm with sound and lightning and typically also heavy rain or hail. Thunderstorms develop in hot and humid areas. High temperature in this areas cause hot humid (with water vapours) air to rise up. So, strong upward rising winds with water droplets are generated.
What is the first stage of a thunderstorm?
cumulus stage The cumulus stage of a growing thunderstorm. The life of a typical non-severe thunderstorm goes through three stages: Cumulus, Mature, and Dissipating. In the first stage (cumulus), we see the cloud that will become the thunderstorm starting to form and grow due to the rising thermal (or updraft).
What is thunderstorm for Class 7th?
Thunderstorms are the storms with thunder and lightning. Thunderstorms are due to the uneven heating of air around the earth. The earth's surface is heated by the surface of the sun. Air above the earth's surface is heated by conduction.
What is a long line of thunderstorms called?
A squall line is a group of storms arranged in a line, often accompanied by “squalls” of high wind and heavy rain.
What Mesocyclone means?
Definition of mesocyclone : a rapidly rotating air mass within a thunderstorm that often gives rise to a tornado.
What is cyclonic rainfall?
Cyclonic or Frontal rain: This type of rainfall occurs when warm and cold air meets each other. Since warm air is lighter, it rises above the cold air. The rising air is then cooled beyond the saturation point resulting in heavy rainfall. Such rainfall lasts only for few hours.
What is a Convectional rainfall?
Convectional rainfall occurs when the energy of the sun (or insolation) heats the earth's surface and causes water to evaporate changing to water vapor. This warm, moist air then rises, and as it rises, it cools.
What is a rain burst?
cloudburst, a sudden, very heavy rainfall, usually local in nature and of brief duration. Most so-called cloudbursts occur in connection with thunderstorms. In these storms there are violent uprushes of air, which at times prevent the condensing raindrops from falling to the ground.
What’s a derecho storm?
A derecho, according to the US's National Weather Service is “a widespread, long-lived, straight-line windstorm” that is associated with a “band of rapidly moving showers or thunderstorms”. The name comes from the Spanish word 'la derecha' which means 'straight'.
What mesocyclone means?
Definition of mesocyclone : a rapidly rotating air mass within a thunderstorm that often gives rise to a tornado.
What is tide flood?
Tidal flooding, also known as sunny day flooding or nuisance flooding, is the temporary inundation of low-lying areas, especially streets, during exceptionally high tide events, such as at full and new moons. The highest tides of the year may be known as the king tide, with the month varying by location.
What are ebb and flood tides?
As the tide rises, water moves toward the shore. This is called a flood current. As the tide recedes, the waters move away from the shore. This is called an ebb current. The movement of water toward and away from the shore is illustrated by the movement of the green seaweed.
What is a tropical cyclone quizlet?
Tropical cyclone. A low pressure system which develops over a large body of warm tropical water, and moves in an easterly direction. Other names.