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Topic: Tropical cyclone warnings and watches

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	HURRICANE ALLEY Tropical Cyclone Glossary
		The term implies both poleward displacement of the cyclone and the conversion of the cyclone's primary energy source from the release of latent heat of condensation to baroclinic (the temperature contrast between warm and cold air masses) processes.
		A warning of 1-minute sustained surface winds in the range 34 kt (39 mph or 63 kph) to 47 kt (54 mph or 87 kph) inclusive, either predicted or occurring not directly associated with tropical cyclones.
		A warning for tropical storm conditions including sustained winds within the range of 34 to 63 kt (39 to 73 mph or 63 to 118 kph) that are expected in a specified coastal area within 24 hours or less.
	www.hurricanealley.net /info4.htm (1550 words)

	FAQ : HURRICANES, TYPHOONS, AND TROPICAL CYCLONES
		Tropical cyclones are named to provide ease of communication between forecasters and the general public regarding forecasts, watches, and warnings.
		According to Dunn and Miller (1960), the first use of a proper name for a tropical cyclone was by an Australian forecaster early in the 20th century.
		The Northeast Pacific basin tropical cyclones were named using women's names starting in 1959 for storms near Hawaii and in 1960 for the remainder of the Northeast Pacific basin.
	www.aoml.noaa.gov /hrd/tcfaq/B1.html (457 words)

	Historical Tropical Cyclone Tracks
		The term "tropical cyclone" is a generic term for a low-pressure storm system that usually forms in the tropics.
		Tropical storms are classified by wind speed and by the structure of the storm and include hurricanes, other tropical cyclones, subtropical cyclones, and related storms.
		A subtropical cyclone, such as a subtropical depression or storm, is a low pressure system that develops over subtropical waters and that initially has a non-tropical circulation but in which some elements of tropical cyclone cloud structure are present.
	www.nationalatlas.gov /mld/huralll.html (713 words)

	BBC Weather Centre - World Weather - News - 15/02/2005 - Two tropical cyclones heading for the Cook Islands
		Cyclones Olaf and Nancy, which (at the time of writing) are on track to hit Samoa, American Samoa and the Cook Islands, could cross paths creating one giant, destructive storm centre where the two cyclones spin around one another until one is flung off in a fairground ride type of motion.
		The cyclone is so large that for the last few days its outer bands of rain and thunderstorms have been affecting some of the attols, with the eye now fast approaching.
		Tropical cyclone warnings and watches have been issued for a total of seven island nations as the two storms track southeast across the South Pacific.
	www.bbc.co.uk /weather/world/news/15022005news.shtml (318 words)

	Tropical Information: NOAA Watch: NOAA's All-Hazard Monitor: National Oceanic and Atmospheric Administration: U.S. ...
		The cyclone is accompanied by powerful thunderstorms, and in the Northern Hemisphere, a counterclockwise circulation of winds near the Earth's surface.
		Once this warning has been issued, your family should be in the process of completing protective actions and deciding the safest location to be during the storm.
		In the Central Pacific, the NOAA Central Pacific Hurricane Center issues tropical cyclone warnings, watches, advisories, discussions and statements for all tropical cyclones in the Central Pacific from 140 Degrees West Longitude to the International Dateline.
	www.noaawatch.gov /themes/tropical.php (875 words)

	Warnings, Watches, & Advisories - Coastal & Tropical (Site not responding. Last check: 2007-10-12)
		GALE WARNING - Warning is issued for 1 minute sustained surface winds in the range of 34kt (39mph) to 47kt (54mph), either predicted or occurring, but not directly associated with a tropical cyclone.
		STORM WARNING - Warning is issued for 1 minute sustained surface winds in the range of 48kt (55mph) or greater, either predicted or occurring, but not directly associated with a tropical cyclone.
		TROPICAL STORM WARNING - Issued went a tropical storm includes sustained winds within the range of 34 to 63kt (39 to 73mph) that is expected in the coastal area in 24 hours or less.
	home.comcast.net /~halethorpe_weather/warning-coast.htm (259 words)

	About Brisbane TCWC Tropical Cyclone Products
		Tropical Cyclone Watches contain a brief estimate of the cyclone's location, intensity, severity category and movement and the coastal area that could be affected.
		Tropical Cyclone Warnings identify the communities being threatened and contain the cyclone's name, its location, intensity (including maximum wind gusts and its severity category) and its movement.
		A Tropical Cyclone Advice is prefixed FLASH when it is the first warning to a community not previously alerted by a cyclone watch.
	www.bom.gov.au /weather/qld/cyclone/warn_info.shtml (385 words)

	TROPICAL WEATHER TERMINOLOGY HURRICANE
		HURRICANE WATCH - This watch is issued by the National Hurricane Center to alert the public, emergency management, and other cooperating agencies that conditions are favorable for a hurricane, or hurricane conditions to develop over and close to a specific coastal area within thirty six (36) hours, but its occurrence is still uncertain.
		TROPICAL STORM - A warm core tropical cyclone in which the maximum sustained winds speeds are from 39 to 73 mph.
		TROPICAL STORM WARNING - This warning is issued by the National Hurricane Center to alert the public, emergency management, and other cooperating agencies that a tropical storm is occurring, imminent, or likely to occur in a specific coastal area within twenty four (24) hours.
	www.ipass.net /smusten/tropwxterms.htm (811 words)

	The Hurricane Watch Net - (NHC Products Explained)
		Tropical Cyclone Strike Probabilities are normally issued for Atlantic tropical or subtropical cyclones every six hours when the system is forecast to be within 72 hours of landfall.
		Tropical Cyclone Updates are brief statements issued in lieu of or preceding special advisories to inform of significant changes in a tropical cyclone or to post or cancel watches or warnings.
		Tropical Cyclone Position Estimates are issued between 2-hourly intermediate advisories whenever a tropical cyclone with a well-defined radar center is within 200 nautical miles of land-based radar in the United States.
	www.hwn.org /home/nhcproducts-explained.html (1907 words)

	Planet Ark - Twin Cyclones Bear Down on South Pacific Islands (Site not responding. Last check: 2007-10-12)
		Cyclones Olaf and Nancy, which are expected to hit Samoa, American Samoa and the Cook islands, could cross paths creating one giant, destructive storm centre where the two cyclones spin around each other until one is flung off.
		Cyclone Nancy, a category 4 storm which had seemed to peak, was expected to hit the Cook Islands, which are also east of the International Dateline, on Tuesday night.
		It said tropical cyclone warnings and watches had been issued for a total of seven island nations as the two storms track southeast across the South Pacific.
	www.planetark.com /avantgo/dailynewsstory.cfm?newsid=29564 (518 words)

	Section 1. WARNING SUPPORT REGION (Site not responding. Last check: 2007-10-12)
		Tropical cyclone is a generic term for a surface cyclone that is located in the equatorial, tropical, or subtropical region.
		A tropical cyclone that moves into the mid-latitude region and is not completely transformed into a mid-latitude cyclone is still considered a tropical cyclone.
		Tropical Cyclone Warnings for the Western South Pacific/South Indian Ocean (Bulletin Headers: WTXS31-39 PGTW): JTWC issues warnings on TCs in the western South Pacific and South Indian Ocean areas of responsibility.
	www.nrlmry.navy.mil /~chu/chap1/se101.htm (1710 words)

	Storms \| Early Warning System
		Tropical Depression is a weather front with sustained winds of less than 39 miles per hour.
		Tropical Storm is a cyclone where winds range from 39 to 73 miles per hour.
		A Hurricane Warning is declared by the Met Office when dangerous conditions are expected to affect the islands within 24 hours or less.
	www.bahamasweather.org.bs /tropical/early_warning (256 words)

	[No title]
		Tropical Storm Earl formed at the same time as Danielle and moved through the southern Windwards as a tropical storm, but lost its circulation and was downgraded to a tropical wave in the southeastern Caribbean.
		Tropical Storm Earl's motion was controlled by the steering flow provided by a strong mid-level ridge to its north, and this feature was forecast to persist and continue driving the tropical cyclone smartly westwards for the rest of its short Caribbean cruise.
		Tropical Storm Meranti continued to quickly intensify, and at 05/1200 UTC was upgraded to typhoon status by both JMA and JTWC, based on CI estimates of 65 and 77 kts.
	www.tropicalcyclone2005.com /database/tc_summaries/2004_08_Aug.txt (20415 words)

	[No title]
		These warnings are issued to help the public make informed decisions that protect their life, welfare and property in the event of severe weather over the next few days.
		Tsunami watch, warning and information bulletins issued by PTWC and ATWC are disseminated to local, state, national and international users as well as the media.
		The National Weather Service Forecast Office in Honolulu activates the CPHC when: (1) a tropical cyclone moves into the Central Pacific from the Eastern Pacific, (2) a tropical cyclone forms in the Central Pacific, or (3) a tropical cyclone moves into the Central Pacific from the West.
	www.lycos.com /info/warning--warnings.html (558 words)

	Watches and Warnings
		A hurricane watch will be recommended when a tropical is expected to make landfall within 30 hours (more lead time will be given as the system increases in intensity), or when a hurricane is expected to make landfall at a different coastal location, but could affect the watch area if the track unexpectedly changes.
		A Hurricane Watch/Tropical Storm Warning may also be recommended for a tropical storm which has a greater than 50/50 chance of becoming a hurricane before landfall.
		Gale and Storm Warnings: NWHHC can recommend gale and storm warnings when a tropical cyclone is expected to bring gale or storm force winds to a particular location, but when the winds are not expected to be directly from the tropical cyclone.
	www.nwhhc.com /gpage4.html (586 words)

	Lab 12: Tropical Cyclones
		Tropical cyclones are warm-core, vertically stacked cyclones that weaken in intensity (wind speeds decrease) with height in the midlevels and upper levels of the troposphere.
		The energy that drives tropical cyclones is the latent heat of condensation from the thunderstorms in the feeder bands and eyewall that comprise the hurricane.
		This theory of intensification of tropical cyclones is called "Conditional Instability of the Second Kind" or CISK (the first kind of conditional instability is the parcel stability we have already discussed).
	www.borg.com /~glenn/umuc/171/lab12/lab12.htm (3499 words)

	Landfalling Tropical Cyclone Webpage Questions and Answers
		That coastal residents will not take these tropical storm and hurricane wind speed probabilities as seriously as they should when they learn how small the seasonal probability of high winds is at any individual location.
		Many tropical cyclones come very near a coastal area and just miss bringing high winds due to changes in their forecast motion or intensity.
		That the chances of tropical cyclone high wind force wind events in any one year at any location are very small.
	www.e-transit.org /hurricane/faq.html (1379 words)

	Questions on Hurricanes and Tropical Cyclones
		This is when all the ingredients for tropical cyclones come together, including warm ocean waters, a warm moist atmosphere that can produce lots of thunderstorms, plenty of spin in the atmosphere, and not much turning of winds as you go higher up.
		But when we see a tropical cyclone with maximum sustained wind speeds of 39 mph (34 knots), we also usually see the thunderstorms in the cyclone concentrated near the center, and we also see rainfall in the outer part of the cyclone organizing into distinct bands, and we call it a Tropical Storm.
		So as a tropical cyclone strengthens and the air pressure in the center drops, air flows in from all sides of the cyclone in a counter-clockwise direction in the Northern Hemisphere and a clockwise direction in the Southern Hemisphere.
	www.wxdude.com /tropical.html (8172 words)

	2004: the year of the tropical cyclone
		Such tropical cyclones are among the most devastating of all natural hazards.
		They provide the international community and the public with advisories and bulletins containing up-to-date, quality basic meteorological information on tropical cyclones and their behaviour everywhere in the world—their movement and changes in intensity—and the associated phenomena of storm surges and flash floods.
		With the aid of modern technology, such as satellites, weather radars and computers, all tropical cyclones around the globe are now being monitored throughout their lifetime, from their early stages of formation to their disappearance.
	www.wmo.ch /meteoworld/archive/en/dec2004/tropicalcyclone.htm (764 words)

	weather.com - Storm Encyclopedia -
		During this time, the National Hurricane Center (NHC) maintains a continuous watch on tropical cyclones over the Atlantic Ocean, Caribbean Sea, and Gulf of Mexico, as well as the eastern North Pacific.
		For hurricane development location, check the origins of tropical cyclones.
		Generally, warm water needed to generate hurricanes is beginning to cool in late autumn, and weather patterns become unfavorable for tropical cyclone development.
	www.weather.com /encyclopedia/tropical/season.html (193 words)

	Hurricanes: Nature's Greatest Storms
		A hurricane is a severe tropical storm that forms in the North Atlantic Ocean, the Northeast Pacific Ocean east of the dateline, or the South Pacific Ocean east of 160E.
		NOAA Central Pacific Hurricane Center - issues tropical cyclone warnings, watches, advisories, discussions and statements for all tropical cyclones in the Central Pacific from 140 Degrees West Longitude to the International Dateline.
		The Center prepares and distributes hurricane watches and warnings for the general public, and also prepares and distributes marine and military advisories for other users.
	hurricanes.noaa.gov (1270 words)

	Australian Tropical Cyclone Tracker (Site not responding. Last check: 2007-10-12)
		Despite the quiet start to the tropical cyclone season, residents of the northwest are being alerted to the increased cyclone risk from February through to April.
		The tropical depression is in a high shear environment and is tracking south-east away from the Soloman Islands toward the Cook Islands and Tonga.
		Watches and warnings issued for Daly River communites, Kimberley coastline and border areas of NT and WA.
	journals.aol.com /pvodogaz/australian-tropical-cyclone-trac (2781 words)

	Hurricane Paul weakening/Tropical Cyclone Xavier grows
		for advisories and warnings on the tropical cyclone.
		Tropical Cyclone Xavier 01F [930hPa] centre was located near 13.7 South 169.6 East at 240600 UTC.
		Cyclone moving southeast under upper northwest flow but expected to gradually turn south in the next 24 hours under a northeast steering field.
	www.surfersvillage.com /surfing/24459/news.htm (410 words)

	TROPICAL CYCLONE PUBLIC SAFETY
		TROPICAL STORM WATCH: Tropical Storm conditions are possible in the specified area of the Watch, usually within 36 hours
		TROPICAL STORM WARNING: Tropical Storm conditions are expected in the specified area of the Warning, usually within 24 hours
		HURRICANE WATCH: Hurricane conditions are possible in the specified area of the Watch, usually within 36 hours.
	theweatherprediction.com /wxsafety/hurricane (210 words)

	Twin cyclones bear down on South Pacific islands - 15 Feb 2005 - Samoa
		SYDNEY - Two tropical cyclones are bearing down on three South Pacific island nations creating a "critically dangerous situation", Australian disaster officials said on Tuesday.
		Cyclone Olaf, heading towards Samoa and American Samoa, is forecast to intensify to a top category 5 storm by the time it reaches the islands in 12 to 36 hours, said the Australian-Pacific Centre for Emergency and Disaster Information.
		Cyclone Nancy is forecast to reach a category 4 storm in the next 24 hours as it heads towards the Cook Islands, already battered by Cyclone Meena on February 7.
	www.nzherald.co.nz /location/story.cfm?l_id=88&ObjectID=10011183 (243 words)

	weatherUSA.net - Tropical Depression Sergio (Eastern Pacific), Tropical Cyclone Dicussion #29
		The following tropical advisory is pulled from the National Hurricane Center.
		Tropical Depression Sergio Discussion Number 29 NWS TPC/National Hurricane Center Miami Fl Ep212006 100 PM PST Mon Nov 20 2006 the satellite appearance of the sergio has deteriorated over the course of the day.
		with respect to statistics, sergio is the longest running tropical cyclone in the eastern pacific for november.
	www.weatherusa.net /wxwarnings/fulltext.php?type=tropical&location=ep&product=discussion&storm=1 (302 words)

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