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Topic: Severe weather terminology


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In the News (Tue 2 Dec 08)

  
  ScienceDaily: Severe weather terminology (United States)
Researchers Demonstrate NEXRAD Radar Helps National Weather Service Forecasters Save Lives (June 11, 2005) -- Tornado warnings have improved significantly and the number of tornado casualties has decreased by nearly half since a network of Doppler weather radars were installed nationwide by the National...
NOAA Forecasters Predict Critical Fire Weather Conditions In Southwest U.S. (July 16, 2005) -- Weather conditions on Tuesday have the potential to create a significant fire weather situation across parts of southeastern Nevada, southwestern Utah and northwestern Arizona, according to...
Numerical weather prediction -- Numerical weather prediction is the science of predicting the weather using "models" of the atmosphere and computational techniques.
www.sciencedaily.com /encyclopedia/Severe_weather_terminology_(United_States)   (1443 words)

  
  Severe weather terminology (United States) - Facts, Information, and Encyclopedia Reference article
Severe local storms - These are short-fused, small scale hazardous weather or hydrologic events produced by thunderstorms, including large hail, damaging winds, tornadoes, and flash floods.
Severe thunderstorm watch - Conditions are favorable for the development of severe thunderstorms in and close to the watch area.
Severe thunderstorm warning - A severe thunderstorm is indicated by Doppler radar or sighted by skywarn spotters.
www.startsurfing.com /encyclopedia/s/e/v/Severe_weather_terminology.html   (3801 words)

  
 Severe weather Summary
Severe thunderstorms are classified as having winds greater than or equal to 58 mph (miles per hour), and/or hail greater than or equal to three-quarters of an inch.
The ability to determine the structure of storms is particularly useful in the detection of severe weather.
Severe weather phenomena are weather conditions that are hazardous.
www.bookrags.com /Severe_weather   (1797 words)

  
 directopedia : Directory : Regional : Asia : Weather
Weather comprises all the various phenomena that occur in the atmosphere of a planet.
Average weather conditions over significantly longer periods is known as climate, which is studied by climatologists for signs of climate change.
Weather phenomena and systems on other planets are thought to be similar to those on Earth, but often occur on a much bigger scale.
www.directopedia.org /directory/Regional-Asia/Weather.shtml   (602 words)

  
 Environment Canada's Special Weather Statements and Weather Warnings for the Atlantic Region
A Special Weather Statement may also be used when conditions show signs of becoming favorable for severe weather when the situation is not definite enough or too far in the future to justify a warning.
A WEATHER WARNING alerts you that severe weather is occurring or that hazardous weather is highly probable.
Severe thunderstorm or tornado warnings may be issued less than one hour in advance.
www.atl.ec.gc.ca /weather/terminology.html   (2048 words)

  
  USATODAY.com - The Weather Guys: Archives
The National Weather Service classifies a thunderstorm as severe if wind gusts reach 57.5 mph or faster, if hail is three quarters of an inch in diameter or bigger, or if the thunderstorm produces a tornado or tornadoes.
In weather terminology, a front is simply a boundary between two different air masses, typically between a colder, denser air mass and a warmer, less dense air mass.
When severe weather threatens your area, forecasters at your local National Weather Service office are at the top of their games.
blogs.usatoday.com /weather/severe_weather/index.html   (4603 words)

  
 WECA - Weather Glossary
Severe Thunderstorm - A thunderstorm with winds of 58 mph or greater and/or with hail 3/4 inches diameter or larger.
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.
Severe Thunderstorm Watch - Issued when conditions are favorable for the development of severe thunderstorms in and close to a defined area.
www.weca.org /nws-terms.html   (3124 words)

  
 Channel3000.com - Weather
The Storm Prediction Center says that there is a MODERATE RISK of severe thunderstorms on Thursday and Thursday night for the eastern two-thirds of Illinois and southeastern Wisconsin (south and east of a Dubuque, IA to Madison to Green Bay line).
There is a SLIGHT RISK of severe thunderstorms for Thursday and Thursday night for the eastern half of Iowa, the rest of Illinois, and the rest of the southeastern two-thirds of Wisconsin (south and east of a La Crosse to Marquette, MI line).
The severe weather threat should end with the passage of the cold front on Thursday night, although showers and thunderstorms may continue into much of the night, along with the threat for heavy rainfall.
www.channel3000.com /weather   (895 words)

  
 KATV Weather Center - Weather Glossary
MCCs typically form during the afternoon and evening in the form of several isolated thunderstorms, during which the potential for severe weather is greatest.
Hail and wind are the two elements for classifying a thunderstorm as severe; lightning and flooding rains are elements of the thunderstorm itself.
Several suction vortices typically are present in a multiple-vortex tornado.
www.katv.com /external.hrb?p=wxglossary&w=1   (1724 words)

  
 NWS FORECAST DISCUSSION JARGON
A severe wind is one with wind speeds of 50 knots (58 miles per hour) at the surface.
Its primary usage is for aviation and severe weather forecasting.
A severe convective wind gust from a thunderstorm is a straight-line wind while the winds of a tornado are not.
www.theweatherprediction.com /jargon   (6752 words)

  
 Freeze Protection Publication: Weather Terminology
Energy radiating from the soil surface as well as plants is lost to space (as on clear nights) or absorbed or reflected by water vapor (as in clouds) and water.
This is important to remember because actual air temperature at the soil surface or on crop beds (such as strawberries) may easily be several degrees colder than at a height of five feet on calm, clear nights.
However, measurements from remote weather stations in the state and from helicopters used for freeze protection have shown strong inversions of 6 to 8 degrees at 50 to 60 feet and 8 to 14 degrees at 100 to 200 feet.
www.aces.edu /dept/peaches/frzweather.html   (1882 words)

  
 WEAU - HomePage
Severe thunderstorms have been indicated by radar or sighted by a trained weather spotter.
A severe thunderstorm warning is issued when winds are 58 miles per hour or greater and/or hail is 3/4 inch in diameter or larger.
*Severe thunderstorm warnings include the location of the center of the severe thunderstorm, direction of movement and speed at which the storm is moving.
www.weau.com /unclassified/1442657.html   (934 words)

  
 Severe weather terminology (United States) - Wikipedia, the free encyclopedia
Severe Thunderstorm Watch - Conditions are favorable for the development of severe thunderstorms in and close to the watch area.
Severe Thunderstorm Warning - A severe thunderstorm is indicated by Doppler radar or sighted by skywarn spotters.
Conditions are favorable for the development of severe thunderstorms producing tornadoes in and close to the watch area.
en.wikipedia.org /wiki/Severe_weather_terminology   (4322 words)

  
 Severe weather terminology (United States) information - Search.com
NWS may activate weather spotters in areas effected by watches to help them better track and analyze the event.
NWS may activate weather spotters in areas effected by warnings to help them better track and analyze the event.
NWS may activate weather spotters in areas effected by advisories to help them better track and analyze the event.
www.search.com /reference/Severe_weather_terminology   (3699 words)

  
 Severe Weather Unit
The Severe Weather Patterns unit consists of a series of related lessons that form a comprehensive study of dangerous weather patterns in the United States.
As part of this unit, local weather data is collected daily and posted to a collaborative weather site on the Web, and the students develop (or review) a severe weather action plan for their school.
Following the first five lessons, a special severe weather awareness day is planned where students present their research reports, along with their action plan and any other associated products (models, Web-pages, etc.) to the rest of the class/school.
commtechlab.msu.edu /sites/letsnet/noframes/subjects/science/b4u5.html   (818 words)

  
 |Safety & Security| Millikin University
Severe Weather can range from thundertorms, tornados, foods, large hail, lightening and damaging winds.
Severe Thunderstorms are possible and you need to listen to the radio or television for updated information.
A severe thunderstorm is occurring and you need to stay indoors and take shelter.
www.millikin.edu /security/WeatherSafety.asp   (383 words)

  
 Severe Weather Information Table
SEVERE THUNDERSTORM or TORNADO WATCH Severe thunderstorms with large hail, damaging winds, and/or tornadoes are possible, but the exact time and location of storm development is still uncertain.
SEVERE THUNDERSTORM WARNING A severe thunderstorm is imminent or occurring; it is either detected by weather radar or reported by storm spotters.
A severe thunderstorm is one that produces winds 58 mph or stronger and/or hail 3/4 inch in diameter or larger.
home.ptd.net /~steveric/Severe_Weather_Information_Table.html   (857 words)

  
 Welcome to Florida Coastal School of Law
Florida Coastal School of Law will close because of severe weather when normal operation would pose a danger to students, staff and faculty while on campus or would prevent large numbers of them from coming to campus or returning safely to their homes in the immediate surrounding area.
During severe weather emergency periods, such as when a hurricane warning has been declared for Duval County, the Dean of the Law School may close the school and cancel classes.
If the Dean determines that the weather conditions in Duval County do not necessitate the cancellation of classes, but students in surrounding areas or states have been significantly affected by the severe weather and are not, therefore, able to attend classes, those absences will be handled on a case-by-case basis.
www.fcsl.edu /weather   (993 words)

  
 Severe Weather Safety
Severe weather presents one of the most common hazardous conditions in the Cincinnati area.
Severe Thunderstorm - A thunderstorm producing winds in excess of 58 MPH and/or hail of 3/4" or larger.
The first line of defense against severe weather should be a NOAA Weather Radio warning alarm receiver.
www.greentwp.org /severe.htm   (638 words)

  
 Class Info, Notes, and Syllabi Index Page
Basic physical principles, their relation to weather events, and weather's impact on society will be explored.
Weather Forecasting II A continuing study of day-to-day weather analysis and forecasting.
Experience actual severe weather events in the infamous "Tornado Alley!" Wednesday night classes prepare students to identify storm structure and learn to nowcast.
weather.cod.edu /classnotes.html   (367 words)

  
 Severe Weather
Severe weather is a constant threat to the Hub City and the South Plains.
The National Weather Service defines a tornado as a violently rotating column of air extending from a thunderstorm to the ground.
He's referring to a map of the United States with data compiled by the National Severe Storms Laboratory that shows Lubbock to be the ''yolk,'' that is, the most likely location in the nation for a tornado Sunday.
www.lubbockonline.com /special/severe_weather   (1147 words)

  
 Tornado Preparedness and Safety (Adopted by AMS Council 14 February 2000)
Basic weather knowledge, combined with an understanding of severe weather terminology and dissemination services, can help a person determine the level of threat and the urgency of a situation.
These include NOAA Weather Radio, local and cable television programs, local radio programs, web sites, etc. The national and local severe weather outlooks issued by the National Weather Service and disseminated through various government and commercial services are extremely valuable sources of information and should be sought out, especially during the favored seasons.
In severe weather situations, motorists should be extremely cautious about driving into threatening conditions, since tornadoes can be hard to distinguish when very close and can sometimes be hidden in rain.
www.ametsoc.org /AMS/policy/tornadopolicy2000.html   (3315 words)

  
 Bureau-Marine pamphlet
Wind direction and speed are determined by the patterns of highs, lows and fronts seen on weather maps and by local effects such as sea-breezes and thunderstorm downdrafts.
Wind (or sea) waves are generated by the local prevailing wind and vary in size according to the length of time a particular wind has been blowing, the fetch (distance the wind has blown over the sea) and the water depth.
The Bureau's HF radio fax service transmits a range of weather charts and warning summaries on a 24-hour schedule which can be obtained from the Bureau's Radio Fax Schedule page or by phoning one of the Bureau's capital city offices.
www.bom.gov.au /info/marine/marpamp.shtml   (1507 words)

  
 NBC 6 StormTrac Weather
A Severe Thunderstorm Watch or a Tornado Watch is issued when atmospheric conditions are favorable for severe weather to develop.
A Severe Thunderstorm Watch is issued for areas where 3/4 inch hail or larger and/or damaging thunderstorm winds are expected and are the primary concern.
Severe Thunderstorm or Tornado Warnings are issued by local National Weather Service offices when severe thunderstorms or tornadoes are imminent, either indicated by doppler radar or reported by reliable sources such as Skywarn spotters.
www.kcentv.com /weather/sww-6p.html   (290 words)

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