Severe Weather Alerts Delivered To Your Desktop
Download your Desktop Alert today! Click Here.
View the System Requirements.
severe weather - Generally, same as severe storm.
shear - The variation (usually the directional derivative) of a vector field along a given direction in space. The most frequent context for this concept is wind shear.
SEVERE WEATHER
Generally, any destructive weather event, but usually applies to localized storms, such as blizzards, intense thunderstorms, or tornadoes.
Severe Weather Analysis
This WSR-88D radar product provides 3 base products (reflectivity (SWR), radial velocity (SWV), and spectrum width (SWW)) at the highest resolution available along with radial shear (SWS).
Severe Weather Potential Statement (SPS or HWO) This statement is issued designed to alert the public and state/local agencies to the potential for severe weather up to 24 hours in advance.
Public Severe Weather Outlook
These are issued when the Storm Prediction Center (SPC) in Norman, Oklahoma anticipates an especially significant and/or widespread outbreak of severe weather.
Severe Weather Events: links to web pages on tropical cyclones, severe storms, bushfire weather etc.
SOI (Southern Oscillation Index): definition
Solar Radiation Browse Service ...
Severe Weather Outlook, National Forecast, Hurricanes, Tornado Video, Weather News, Pet Video, Bloopers
Shopping
The Weather Channel Store ...
Severe weather is expected to affect more than 10 percent of the area. A high risk is rare, and implies an unusually dangerous situation and usually the possibility of a major severe weather outbreak.
High Surf Advisory ...
Severe Weather - Its any kind of destructive or life-threatening weather event. Thunderstorms that can be destructive, while tornadoes, high winds, hail, excessive rainfall and lightning can be life threatening.
SEVERE WEATHER AWARENESS WEEK - A week dedicated to severe weather and tornado safety and awareness in the United States. Designation of this week varies by state.
SFC - Abbreviation for surface. May also be referred to as SURFACE OBS.
A severe weather condition characterized by low temperatures, winds 35 mph or greater, and sufficient falling and/or blowing snow in the air to frequently reduce visibility to 1/4 mile or less for a duration of at least 3 hours.
In severe weather, various transportation systems, such as airlines, railroads, or buses may cancel or delay services due to inclement weather.
The last severe weather element is the tornado. Defined as a violently rotating column of air in contact with the ground and pendent from a cumulonimbus cloud, tornadoes are capable of inflicting extreme damage.
Photograph by: Marshall ...
"6 Meter Severe Weather Net"
July 5, 1983.
Amateur radio operators from a five-state area who are part of the National Weather Service "Severe Weather Service Network" will hold their first annual meet at Beltzville State Park this Sunday.
BLIZZARD: Severe weather characterized by snow with winds in excess of 35 mph and visibility 1/4 mile or less for 3 hours or longer.
blizzard: severe weather in which there is low temperatures, strong winds and heavy amounts of snow falling or blowing.
(return to top)C
climate: average meteorological conditions in a certain area over a certain period.
SWEAT Index - Severe Weather ThrEAT index. A stability index developed by the Air Force which incorporates instability, wind shear, and wind speeds as follows: SWEAT = (12 Td 850 ) + (20 [TT-49]) +( 2 f 850) + f 500 + (125 [s+0.2]) where ...
Blizzard A severe weather condition characterized by low temperatures and strong winds (greater than 32 mi/hr) bearing a great amount of snow. When these conditions continue after the falling snow has ended, it is termed a ground blizzard.
Blizzard - severe weather condition characterized by low temperatures, winds of 32 mph or higher, and sufficient snow for visibility to be reduced to less than 500 ft
Boiling Point - the temperature at which a liquid boils ...
ICE STORM
A severe weather condition characterized by falling freezing precipitation. Such a storm forms a glaze on objects, creating hazardous travel conditions and utility problems.
High risk (of severe thunderstorm)Severe weather is expected to affect more than 10 percent of the area.
Total-Totals IndexA stability index and severe weather forecast tool, equal to the temperature at 850 mb plus the dew point at 850 mb, minus twice the temperature at 500 mb.
SPSSevere Weather Potential StatementSQLNSquall LineSquallA strong wind characterized by a sudden onset in which the wind speed increases at least 16 knots and is sustained at 22 knots or more for at least one minute. 2.
MCCs typically form during the afternoon and evening in the form of several isolated thunderstorms, during which time the potential for severe weather is greatest. During peak intensity, the primary threat shifts toward heavy rain and flooding.
Dry LineA boundary separating moist and dry air masses, and an important factor in severe weather frequency in the Great Plains.
The SWEAT Index and Total-Totals Index The SWEAT Index was derived by the Air Force, not for putting cadets through basic training but for indicating the potential for severe weather to pilots.
duststorm"(Or dust storm; also called duster, black blizzard.) An unusual, frequently severe weather condition characterized by strong winds and dust-filled air over an extensive area.
An important factor in severe weather frequency in the Great Plains (US).
This product lets the NWFO know of the status of the current severe weather watch (Tornado or Severe Thunderstorm). During the severe weather watch, the Storm Prediction Center (SPC) will issue these reports periodically.
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. They frequently travel to the right of the main environmental winds (i.
CAPE is directly related to the maximum potential vertical speed within an updraft; thus, higher values indicate greater potential for severe weather.
WATCH - identifies a relatively large area in which hazardous or severe weather might occur. The watch is only an indication of where and when the severe weather probabilities are the highest, and should not be confused with a warning.
While a severe thunderstorm may produce severe convective wind gusts that last for several minutes at a point location, derecho wind can last 30 minutes or longer. Derechos can be tracked from radar and severe weather reports while they are ...
Statement- provides the public with information concerning the status of existing severe weather conditions; ...
It is the opposite of ridge and generally is associated with severe weather, as the cyclone itself. The maximum curvature of the isobars occurs along its axis. A front is necessarily located within a trough.
these clouds are ragged and wind-torn and are not usually attached to the thunderstorm base. Scud clouds do not produce severe weather.
A back-sheared anvil often implies a very strong updraft and a high severe weather potential.BackfireA fire started to stop an advancing fire by creating a burned area in its path.
There is also a special type of Precipitation mode sometimes called "Severe Weather" mode. This mode operates like normal precip mode, but utilizes VCP11 and produces an image about every 5 minutes.
instability: a state of the atmosphere when a parcel of air will keep moving either up or down from its starting position when moved. An unstable atmosphere is often associated with severe weather.
values indicate instability - the more negative, the more unstable the air is, and the stronger the updrafts are likely to be with any developing thunderstorms. However there are no "magic numbers" or threshold LI values below which severe weather ...
 See also: Weather, Storm, Air, Thunder, Cloud
|
