what is a storm chaser?
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Storm chasing is broadly defined as the intentional pursuit of any severe weather condition, regardless of motive. A person who chases storms is known as a storm chaser, or simply a chaser. While witnessing a tornado is the biggest objective for many chasers, many chase thunderstorms and delight in seeing cumulonimbus structure, watching a barrage of hail and lightning, and seeing what skyscapes unfold. There are also a smaller number of storm chasers who chase hurricanes.
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Isolated thunderstorms- A potential threat for thunderstorms in the area. The percentage is usually below 50% and it also depends on the air mass. This also means that this can change to anything else depending on the season and climate. Also, usually associated with a Low Preassure, but rearly with a cold front or dry line.\nScattered Thunderstorms- A threat for thunderstorms in the area is 60% or above. This means that there will more than likely be thunderstorms associated with a dry line or a cold front. For this to develope with a low preassure, it has to be very powerful.
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I think I can tell from how you pose this question that you're looking with the intent of finding something to use for chasing. As an experienced spotter, the best advice I can give you first is to take a StormWarn spotter training course. You'll learn a lot about what you think you want to chase before doing so, and can get some tips. The tool I use is http://www.weathertap.com; for $6/month, you get near real-time Doppler - all fields, from all stations. You get NLDN data products, SPC/NOAA warnings, and extremely high-res (1 km grid spacing) visible satellite imagery. It's also available on Windows CE PDAs. Another tool, either independent of or combined with weathertap, would be the Professional Accuweather site, http://proa.accuweather.com. And, don't forget the Storm Prediction Center operational and experimental forecast products at http://www.spc.noaa.gov.
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Atmospheric bressure, the shorter the distance between the isobars indicates that a storm is brewing
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A tornado is basically like a giant vacuum cleaner.  They are frightening and amazing all at the same time!\n\nEverything you ever wanted to know about them can be found in this excellent resource from NOAA.
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The Storm Prediction Center (SPC) is one of 7 National Centers for Environmental Prediction. Their mission is to provide timely and accurate forecasts and watches for severe thunderstorms and tornadoes over the contiguous United States. The SPC also monitors heavy rain, heavy snow, and fire weather events across the U.S. and issues specific products for those hazards
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the flash of electricity is lightning... the sound that follow is thunder... storm usually occurs when lightning, thunder, strong wind and rain happen at the same time...
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It depends on when you want to chase them.  If you're chasing in the winter, go to the Dixie Alley or areas near the Gulf of Mexico.  If you're chasing in the Spring, go to tornado alley, which includes Oklahoma, Kansas, and Texas.  If you're chasing in the summer, go to Michigan, Ohio, New York, Pennslyvania, and Southern Ontario.  Southern Ontario is in Canada, but they do see a lot of tornadoes and severe storms during the summer.  Also Manitoba, Saskatchewan, and Alberta are also good.  They have less storms, but more random and possibly more Oklahoma style tornadoes.
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a warning means there is actually a storm heading your way, a watch means conditions are likely for one to develop
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A large storm pulls energy from as far around as it can reach. Therefore if the storm moving is pulling all the heat and moisture out of the air around it, then there is a void of mayhem, a calm, before the actual storm throws back all that was there to begin with.
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Everything you wanted to know about cyclones. [please see link]
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The ones you can get from the storm Romantix.
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Hurricanes are what scientists call "strong Tropical Cyclones". They are formed when large areas of the ocean become heated, and the air pressure over that area drops. This causes thunderstorms and strong surface winds. Cyclones develop over tropical or sub-tropical waters (for example, in the Atlantic off the coast of Africa, or in the Pacific). As they travel long distances gathering energy from the ocean, they are likely to be classified as strong Tropical Cyclones. When the winds of a tropical storm reach 74 mph, then the storm is classified as a hurricane.\n\nMore information on how hurricanes happen can be found on this good site : http://kids.earth.nasa.gov/archive/hurricane/creation.html
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They use a ouiji board.\n\nNot hard to predict snow, sleet, and hail in Winter and rain, wind, and thunderstorms in Summer.  Nice to throw in sunny or cloudy.\nThere are only so many different weather results.
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C'mon now, sometimes I wonder why people ask questions like this....sorry to be rude but I know you know what a hurricane is but here...\n\nhur·ri·cane    ( P )  Pronunciation Key  (hûr-kn, hr-)\nn. \nA severe tropical cyclone originating in the equatorial regions of the Atlantic Ocean or Caribbean Sea or eastern regions of the Pacific Ocean, traveling north, northwest, or northeast from its point of origin, and usually involving heavy rains. \nA wind with a speed greater than 74 miles (119 kilometers) per hour, according to the Beaufort scale.
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Actually, cyclones ARE another name for hurricanes - I post this directly, not changing the context one bit.\n\nIn meteorology, a cyclone is the rotation of a volume of air about an area of low atmospheric pressure. Cyclones are responsible for a wide variety of different meteorological phenomena such as tropical cyclones and tornadoes. Because of this, most weather forecasters avoid using the term cyclone without a qualifying term.\n\nTropical cyclones (also known as tropical storms, hurricanes and typhoons) are cyclones which form over warm (generally tropical) ocean waters and draw their energy from evaporation and condensation. They are characterized by a strong area of low pressure at the surface and an area of higher pressure aloft. Tropical cyclones are associated with strong thunderstorms, high winds, and flooding.\n\nIn North America, tornadoes are sometimes described as cyclones because they involve powerful winds around a low-pressure vortex. However, they differ from other cyclones by their very local nature; most cyclones are massive storms, while tornados are comparatively small but extremely powerful. Tornadoes occur on too local a scale for the Coriolis effect to determine the direction of rotation; for this reason tornado winds sometimes flow anticyclonically, or opposite the direction dictated by the Coriolis effect.
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whal.. er, I mean hurricanes