of data from this site, please make reference to the: Station Licensee: Virginia T. Giannetta. Owner - Author: Charles A. Giannetta. Computer Consultant: Charles E. Giannetta & This Web Site. Thank you.
* * Pictures of Clouds Under A Thunderstorm ...
Since all thunderstorms are associated with some type of forcing mechanism, synoptic-scale or otherwise, the existence of true air-mass thunderstorms is debatable. Therefore the term is somewhat controversial and should be used with discretion.
Types of Thunderstorms single cell, multicell clusters, multicell lines and supercells ...
thunderstorm - (Sometimes called electrical storm.) In general, a local storm, invariably produced by a cumulonimbus cloud and always accompanied by lightning and thunder, usually with strong gusts of wind, heavy rain, and sometimes with hail.
Thunderstorm/Thundershower: A local storm produced by a cumulonimbus cloud that contains thunder and lightning and often strong wind gusts, heavy rain showers and, at times, hail.
Thunderstorm - A local storm (accompanied by lightning and thunder) produced by a cumulonimbus cloud, usually with gusty winds, heavy rain, and sometimes hail. Non-severe thunderstorms rarely have lifetimes over two hours.
thunderstorm initiation mechanism"Rising motion associated with an atmospheric feature capable of releasing convective instability leading to thunderstorm development.
THUNDERSTORM TERMS:
1. Cumulus cloud - a cauliflower shaped cloud with a flat base and sharp edges. Tufts are rising columns of air condensing. As the cloud and cloud droplets grow in size, the base will begin to gray.
Thunderstorm
Sudden electrical discharges manifested by a flash of light (lightning) and a sharp rumbling sound. Thunderstorms are associated with convective clouds (Cumulonimbus) and are more often accompanied by precipitation.
Thunderstorm (TS) A local storm produced by cumulonimbus clouds. It is always accompanied by lightning and thunder. It is estimated that nearly 2,000 thunderstorms occur simultaneously around the Earth at any given instant.
Thunderstorm - a local storm produced by a cumulonimbus cloud, always with lightning and thunder, and usually accompanied by strong gusts of wind, heavy rain, and sometimes hail ...
Thunderstorm
Convective showers which produce lightning. Heavy rain, strong winds and hail are all possible in thunderstorms.
Tilted storm ...
THUNDERSTORM Produced by a cumulonimbus cloud, it is a microscale event of relatively short duration characterized by thunder, lightning, gusty surface winds, turbulence, hail, icing, precipitation, moderate to extreme up and downdrafts, ...
Thunderstorm Indication
0 to -2
Marginally Unstable - Thunderstorms possible ...
THUNDERSTORM: A storm with lightning and thunder, produced by a cumulonimbus cloud, usually producing gusty winds, heavy rain and sometimes hail.
THUNDERSTORM (TS, TSRA, TSTM) - A shower accompanied by thunder. It is always accompanied by lightning and thunder, and occasionally by strong gusty winds, hail, and or heavy rain.
Thunderstorm A mesoscale weather system produced by strong convection currents that reach to great altitudes within the troposphere.
Thunderstorm Local storm resulting from warm humid air rising in an unstable environment.
Dry Thunderstorm
Generally a high-based thunderstorm when lightning is observed, but little if any precipitation reaches the ground. Most of the rain produced by the thunderstorm evaporates into relatively dry air beneath the storm cell.
Severe Thunderstorm Warning- Issued when large hail of damaging wind is actually occurring or imminent. Severe thunderstorms can produce tornadoes with little or no advance warning.
Severe Thunderstorm-Any one of the three conditions must be met. 1) Tornadoes 2) Hailstones larger than 3/4" 3) Wind gusts greater than 58 miles per hours.
SEVERE THUNDERSTORM A thunderstorm with winds measuring 50 knots (58 mph) or greater, 3/4 inch hail or larger, or tornadoes. Severe thunderstorms may also produce torrential rain and frequent lightning. Related term: supercell ...
Severe Thunderstorm Warning
Indicates that severe thunderstorms have been sighted or indicated on radar.
Severe thunderstorms Intense thunderstorms capable of producing heavy showers, flash floods, hail, strong and gusty surface winds, and tornadoes.
*Severe Thunderstorm - A thunderstorm which produces tornadoes, hail 0.75 inches or more in diameter, or winds of 50 knots (58 mph) or more. Structural wind damage may imply the occurrence of a severe thunderstorm. See approaching (severe).
Severe Thunderstorm Warning - Issued to warn the public, emergency management and other cooperating agencies when a severe thunderstorm is forecast to occur or is occurring.
Thunderstorm
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: Back-building Thunderstorm, Core Punch, Dry Thunderstorm, Misoscale, Storm Motion, Tail-End Charlie, TSRA, TSTM
Also listed in ...
Thunderstorms caused by powerful sea breeze fronts frequently occur in Florida, a peninsula surrounded on both the east and west by the Atlantic Ocean and Gulf of Mexico, respectively.
Thunderstorms- Storms that produce lightning and thunder.
Tornado- A violently rotating column of air that reaches from the base of a cloud to the ground.
Tropics- The area of the globe from latitudes 23.5 degrees north to 23.5 degrees south.
THUNDERSTORM - A local violent storm caused by large volumes of rapidly rising moist air.
TIP RUDDERS - Rudders at the tips (outside ends) of a wing. Also called dragelons.
TIP VORTICES - See VORTICES.
Thunderstorm
A local storm, usually produced by a cumulonimbus cloud (thunderhead), and accompanied by thunder and lightning.
Tidal bore ...
THUNDERSTORM - A large cumulonimbus cloud (deep vertical convection) reaching extreme altitudes, sometimes in excess of 50,000 feet. Often produces heavy precipitation in the form of rain showers and gusty winds.
[Thunderstorms & Tornadoes] [Hurricanes] [Blizzards & Winter Weather] [Clouds] ...
A thunderstorm in which new development takes place on the upwind side (usually the west or northwest side), such that the storm seems to remain stationary or propagate in a backward direction.
New thunderstorms often develop along outflow boundaries, especially near the point of intersection with another boundary (cold front, dry line, another outflow boundary, etc.; see triple point).
The thunderstorms most likely to produce tornadoes are called supercells and are often a product of the severe weather trigger known as the dry line.
SEVERE THUNDERSTORM: A thunderstorm with wind gusts in excess of 58 mph (50 knots), frequent lightning and hail with a diameter of 3/4" or larger.
SHOWER: Liquid precipitation with frequent changes in intensity or sudden stops or starts.
A Severe Thunderstorm Watch is issued by the Storm Prediction Center in Norman, Oklahoma.
AIR MASS THUNDERSTORM
A thunderstorm that is produced by convection within an unstable air mass through an instability mechanism.
Supercell Thunderstorm
An unusually violent thunderstorm that is capable of generating tornadoes.
Supercooled Water ...
Air-Mass Thunderstorm - A localized thunderstorm that forms in a warm, moist, unstable air mass. Most frequent in the afternoon in spring and summer.
Air mass thunderstorm - a garden variety storm which causes little if any damage. It occurs a considerable distance from any front.
Air pollutant - anthropogenic or otherwise unusual substance in the air. Usually harmful.
Nearly all thunderstorms (including supercells) are multi-cellular, but the term often is used to describe a storm which does not fit the definition of a supercell.
TS, TSRA- Thunderstorm
TUTT- Tropospheric Upper level Tilted Trough or (Tropical Upper Tropospheric Trough).
Four Basic Thunderstorm Types Thunderstorms occur in a variety of forms, sometimes as an isolated cumulonimbus cloud (anvil shaped), sometimes as a cluster of clouds, sometimes as a squall line, ...
>> Supercell thunderstorms: In some ways, this can be regarded as a special case of the multi-cell storm, with some additional factors.
severe thunderstormA thunderstorm that produces heavy precipitation, frequent lightning, strong, gusty surface winds or hail. A severe thunderstorm can cause flash flooding and wind and hail damage and may spawn tornadoes.
Supercell - A thunderstorm with a persistent rotating updraft. Supercells are rare, but are responsible for a remarkably high percentage of severe weather events - especially tornadoes, extremely large hail and damaging straight-line winds.
Barber poleA thunderstorm updraft with a visual appearance including cloud striations that are curved in a manner similar to the stripes of a barber pole.
They are often along and behind cold fronts and gust fronts, being associated with cool moist air, such as an outflow from a thunderstorm. When observed from a distance, they are sometimes mistaken for tornadoes.
In order for a precipitation target to be detected by the radar, it must fill the entire radar beam; therefore, the radar will have a difficult time detecting small showers and thunderstorms at a great distance from the radar.
TrainingRepeated areas of rain, typically associated with thunderstorms, that move over the same region in a relatively short period of time and are capable of producing excessive rainfall totals.
The most common source of lightning is the electric charge separated in ordinary thunderstorm clouds (cumulonimbus). Well over half of all lightning discharges occur within the thunderstorm cloud and are called intracloud discharges.
During thunderstorms, static electricity builds up within the clouds. A positive charge builds in the upper part of the cloud, while a large negative charge builds in the lower portion.
The thunderstorms that result are the principal source of moisture for this region.
Gust Front- the leading edge of a thunderstorm's downdraft air that is most prominent beneath the rain-free base and the leading edge of a thunderstorm; ...
The terms "convection" and "thunderstorms" are often use interchangeably, although thunderstorms are only one form of convection.
Mesoscale Pertaining to atmospheric phenomena having horizontal scales ranging from a few to several hundred kilometers, including thunderstorms, squall lines, fronts, precipitation bands in tropical and extratropical cyclones, ...
watch: for a tornado, thunderstorm, flood, or hurricane. Indicates that the conditions are ideal for one of the aforementioned events to occur. Issued by the U.S.
Tropical depression A mass of thunderstorms and clouds generally with a cyclonic wind circulation of between 20 and 34 knots
Tropical disturbance An organized mass of thunderstorms with a slight cyclonic wind circulation of less than 20 knots.
 See also: Thunder, Storm, Cloud, Weather, Air
|
