Search results
Results From The WOW.Com Content Network
A back-building thunderstorm, commonly referred to as a training thunderstorm, is a thunderstorm in which new development takes place on the upwind side (usually the west or southwest side in the Northern Hemisphere), such that the storm seems to remain stationary or propagate in a backward direction. Though the storm often appears stationary ...
Cloud. Cumulonimbus cloud; Arcus cloud; Downburst. Microburst; Heat burst; Derecho; Lightning. Volcanic lightning; Thunderstorm. Air-mass thunderstorm; Thundersnow
A dangerous rotating column of air in contact with both the surface of the earth and the base of a cumulonimbus cloud (thundercloud) or a cumulus cloud, in rare cases. Tornadoes come in many sizes but typically form a visible condensation funnel whose narrowest end reaches the earth and surrounded by a cloud of debris and dust .
Winter Tornadoes Are Dangerous. As we've discussed before, several factors make winter severe weather outbreaks dangerous.. Storms move rapidly: Severe thunderstorms can often move at speeds above ...
This explains why updrafts underneath the base of a cumulonimbus are often laminar. This phenomenon is well known by glider pilots. [16] (see below). The phenomenon is enhanced under the weak echo region of a supercell thunderstorm that is extremely dangerous. At approximately 4 kilometres (13,000 ft) these smooth updrafts become suddenly very ...
PDS severe thunderstorm watches are issued when there is a higher than normal risk of severe thunderstorm winds capable of major structural damage (in addition to large hail and perhaps a few isolated tornadoes), usually due to a strong and persistent derecho. These watches are very rare (accounting an average of only two each year), as the ...
This process cause thunderstorm formation (and decay) to last for several hours or even over multiple days. Cumulonimbus clouds can also occur as dangerous winter storms called "thundersnow" which are associated with particularly intense snowfall rates and with blizzard conditions when accompanied by strong winds that further reduce visibility.
Why doesn’t Boise get thunderstorms very often? There are three major components you need for a thunderstorm, according to National Weather Service meteorologist Bill Wojciek: moisture ...