### storm:

Thunderstorm
* All thunderstorms are capable of producing deadly lightning.
* All thunderstorms are dangerous and can be associated with a number of hazards
  - because every thunderstorm produces lightning
* All thunderstorms contain dangerous lightning
* All thunderstorms go through various stages of growth and development
  - of growth, development, and dissipation
* All thunderstorms produce deadly lightning
  - lightening
* All thunderstorms produce lightning and thunder
  - which can be deadly
  - lightning, by definition
  - start off as a cumulus cloud, the fleece white cloud of summer days
* Every thunderstorm has lightning
  - produces heavy rain, strong winds and most dangerous of all, lightning
* Every thunderstorm produces lightning , which kills more people each year than tornadoes
  - which has the potential to kill people
* Every thunderstorm produces lightning, and can bring strong winds, hail, tornadoes, and flooding
  - which nationally kills more people each year than tornadoes
* Keep an eye on the sky.
* Many thunderstorms rotate.
* Most thunderstorms affect locations.
* Most thunderstorms bring gust wind
  - little rain
  - localize rainfall
  - create clouds
  - deliver rain
* Most thunderstorms dump heavy rainfall
  - vast amounts of rain for a few minutes and pass on
* Most thunderstorms generate little rainfall
  - surface rainfall
  - happen in summer
* Most thunderstorms have flat tops because they have risen all the way to the tropopause
  - move fronts
  - occur in the late afternoon or evening after maximum radiational warming
  - pose the threat of heavy downpours
* Most thunderstorms produce gusts
  - high wind
  - intense rainfall
  - weather
  - wind gusts
* Some thunderstorms bring hails
  - cause tornado
* Some thunderstorms have common mechanisms
  - lift mechanisms
  - occur during afternoons
* Some thunderstorms occur in afternoons
  - late afternoons
* Some thunderstorms produce damage tornado
  - hailstones
  - strong damaging winds
  - violent tornado
* affect relatively small areas when compared with hurricanes and winter storms
  - with hurricanes or winter storms
  - the jet stream
* also can produce strong wind gusts
  - occur in the spring and fall in association with passage of weather fronts
* always produce thunder and lightning.
* are a daily occurrence in the summer so start early in the day
  - threat to Coot Bay in the summer
  - severe form of weather that is present in all games
  - also dangerous because they can lead to flash floods
* are also possible across the Central Rockies, the Great Basin and northern Florida
  - in the southwestern states
  - rare
  - always possible in the summer
  - among nature s most spectacular and potentially dangerous events
* are an amazing natural phenomena
  - important part of meteorology at a number of different scales
  - capable of producing hail, heavy rain, frequent lightning and strong gusty winds
  - caused when moist, warm air rises from the Earth's surface
* are common and often unpredictable
  - during the spring and summer months, including some severe storms
  - especially in the southern regions of the state
* are common in the afternoon and night
  - occurrences in the Midwest and Central United States
  - throughout the spring and summer
  - common, occasionally obscuring the sky
  - dynamic
  - essentially beneficial, producing much of the rainfall in the United States
* are frequent in the summer as well, but can often clear up quickly
  - partners of hurricanes and typhoons
* are generally few, increasing in frequency in late spring
  - only in late spring and summer
  - giant thermal systems and often have more than one convection cell
  - likely during any time of the year
* are more likely in summer
  - typical of warmer climates
* are most common in the late afternoon and evening during the warm months
  - spring and summer but can occur anytime during the year
  - warmer months, almost exclusively so in the tropical north
  - likely to happen in the spring and summer
* are most likely to occur in a moist, unstable atmosphere
  - the late afternoon and early evening hours
  - numerous throughout southwest Florida as sea breezes dominate the weather pattern
  - one of the most thrilling and dangerous of weather phenomena
  - our most common experience of severe weather
  - possible in northern California, mostly in the western mountains
  - primarily warm-season phenomena, but have been observed also in the winter months
  - quite common in early summer
  - rainstorm
  - rare during the dry season
* are rare in polar regions because of cold surface temperatures
  - the arctic regions due to the lack of warm moist air
  - rather localized and occasionally severe with hail and strong winds
  - responsible for some of the strongest winds on the lake
  - slow to move and very isolated
  - so complicated a weather phenomenon that many of their mechanisms remain unknown
* are the commonest of storms and frequently accompany hurricanes, tornadoes, etc
  - electrical generators that keep the global electric current flowing
  - predominant form of precipitation during the warm season in middle latitudes
* are the primary hazard at international flight altitudes
  - source of electrical surges
* are very active electrically
  - common in Texas, especially the eastern and northern portion of the state
  - dangerous, even when no tornadoes are formed
  - unpredictable and can pop up at any time in Southwest Florida
* arise every summer with amazing speed and the sun often comes out afterward.
* average one or two a year and generally are the result of frontal activity
  - two days per year
* begin in cumulus clouds
  - to develop when the atmosphere becomes sufficiently unstable
* bring damage wind
* bring strong damage wind
* build due to instabilities based on positive feedbacks.
* can also erupt under the high moisture plumes
  - produce violent straight-line winds which produce a similar sound
  - band together and grow into a proto-hurricane known as a tropical depression
* can be beautiful, but they also can be deadly
  - easy to find, but it depends what time of year it is
  - scary because of the loud boom
  - severe and can occur suddenly
  - single cell, multicell cluster, multicell line, and super cell
  - become threatening in as little as half an hour
  - blow in with little warning and create dangerous lightning conditions
  - bring horrendous winds, rain, and blowing dust
  - build in a matter of hours and produce heavy rain and flash floods
* can cause a lot of damage
  - flash flooding which can quickly fill sandy washes
  - create several downbursts in succession, with varying degrees of intensity
  - develop quickly and offer a serious threat
  - form dense cirrus at their tops
  - happen anywhere where the right conditions are present
* can occur any time of year, although they are most common during spring and summer
  - anytime, but are most frequent in the late spring and summer months
* can occur at any time but are most frequent during the late spring and summer
  - time, but are mostly a summertime problem
  - anytime and snow also
  - in any month of the year in the Keys
  - year-round and at all hours
  - pop up in short order even on a day that started with clear blue skies
* can produce deadly lightning, hail, heavy rain, violent winds
  - flash flooding, damaging winds, hail and even tornadoes
  - heavy localized downpours and sudden dramatic drops in temperatures
  - strong winds, lightning, hail or heavy rain
  - result in rapidly rising streams
  - show up quickly, with high winds and lots of lightning
  - still occur, but fog is rare
* cause destruction
  - flash floods, which are weather's biggest killer
  - very sharp peaks
* coagulate above molting birds of prey at humid sunset.
* come and go, sometimes drenching downpours.
* concentrate allergens and trigger asthma attacks, researchers say.
* contain frequent deadly cloud to ground lightning
  - very strong electrical charges
* continue to pose threat for aviation and the energy sector.
* cover a wide spectrum and present a wide variety of hazards.
  - downdrafts that can cause the storm to die out or intensify
* depend on strong rising current of air to build and develop.
* develop from the warm and humid air.
* develop in warm, moist air in advance of east-ward moving cold fronts
  - advance of eastward-moving cold fronts
  - unstable air
* disrupt the jet stream changing the weather pattern.
* drop huge amounts of rain locally.
* dump hails
* exercise great influence, for both good and bad, on many human activities.
* form along squall lines and associated cold fronts
  - and die out within the storm
  - because the air is fairly warm and humid
  - from the equator to as far north as Alaska
* form when a particularly warm, moist air mass rises into cold air above land or sea
  - air parcels are lifted vertically
  - particularly warm, moist air rises into cold air above land or sea
  - warm, moist air collides with cooler, drier air
* forming in tropical air masses are especially common in Florida.
* generally move, develop, and dissipate.
* generate elusive and mysterious sprites
* give rains to the desert, and they only rain in parts of a very large expanse of land.
* happen in every state, and every thunderstorm has lightning.
* have wind.
* impact areas.
* includes storm centers.
* localized phenomenon.
* make the sky flash like a strobe light in a nightclub.
* materialize quickly, and the wind can blow hard, particularly in late afternoon
  - very quickly, the weather is very unpredictable
* normally occur in warmer climates.
* occur as fronts collide
  - because the gradient is in excess of adiabatic
  - during the summer months
  - each month, but are most frequent in spring and summer months
  - every other day
* occur frequently in summer, and in winter there is generally light snowfall
  - in late afternoon regularly throughout the summer in Florida
  - infrequently throughout the year, averaging five annually
  - late in the afternoon and evening hours because of maximum heating at that time
* occur most frequently in the summer but have been observed each month of the year
  - over land, but do occur over the oceans as well
  - often throughout the summer
* occur on about one of every five days
  - an average of thirty days per year
  - suddenly at higher altitudes
  - throughout the year, most frequently in the spring
  - with the greatest frequency in the eastern counties
* occurring the night can cause blackouts.
* often come in by noon or early afternoon
  - move quickly
* often occur in the early morning hours when temperatures are cooler
  - summer and often bring heavy winds
  - reach greater heights than the usual cruising levels of commercial aviation
* outflows preceding epidemics of asthma during spring and summer.
* pose a variety of threats to boater safety from both gusty winds and lightning
  - many threats to marine safety
* produce flash flooding when very heavy rain falls in a short period of time
  - large hail and damaging winds across Georgia and the Carolinas
  - other hazards as well
  - two types of wind
* provide summer water, cool the earth, and clean the air
  - the vast majority of our rain during the late spring and summer months
* rapidly reduce ozone levels.
* represent an awesome power in the universe.
* require instability, moisture and lifting air.
* result from the rapid upward movement of warm, moist air, sometimes along a front.
* rise quickly, especially in late summer.
* shift east out of region, then clearing skies.
* thrive under certain conditions.
* typically consist of very high winds, rain, lightning, and in many cases hail.
* usually are infrequent and apply a large amount of water in a short period of time
  - come from unstable air
  - contain updrafts, large rising swells of warm, moist air
* usually occur in warmer climates and are extremely rare along the Arctic coast
  - on hot days
+ Lexington, North Carolina, Geography, Climate: Cities in North Carolina :: 1828 establishments
  * Thunderstorms are common during the spring and summer months, including some severe storms. Being in central North Carolina, between the Appalachian Mountains and the Mid-Atlantic coast, Lexington has a humid subtropical climate, with moderate temperatures during spring and autumn and warm to hot summers. Winters are relatively mild and wet with highs typically in the 40s to 50s and overnight lows averaging just below freezing.
+ Thunderstorm, Benefits
  * Thunderstorms are dangerous, but they are also a great blessing.
  * Thunderstorms are also our natural air conditioners. Hot air at the surface rises up into the high atmosphere where it is put out into space. Clouds give us shades, and rain can cool down a hot day. In the summer, dust, haze, and other pollutants come together in the lower atmosphere. When the air rises, either in cumulus clouds or in thunderstorms, spreads the pollution higher up into the atmosphere. Rain from thunderstorms washes away many of these pollutants out of the air
  - Lightning: Severe weather
  * Thunderstorms are very active electrically. Lightning is a large electrical  that happens between two opposite charged surfaces