Raymarine e7 - Page 247

TermDenition
Tropicaldepression
Anorganizedsystemofcloudsandthunderstormswithadenedsurfacecirculationandmaximumsustainedwindsof38mph(33kt)orless.
Tropicalstorm
Anorganizedsystemofstrongthunderstormswithadenedsurfacecirculationandmaximumsustainedwindsof3973mph(3463kt).
Tropics
AnareaontheEarth’ssurfacethatliesbetween30ºnorthand30ºsouthoftheequator.
Trough
Anelongatedareaofrelativelylowatmosphericpressure,usuallyextendingfromthecentreofalowpressureregion.
Typhoon
ThenameforatropicalstormoriginatinginthePacicOcean,usuallytheChinaSea.Theyarebasicallythesameasthehurricanesofthe
AtlanticOceanandthecyclonesoftheBayofBengal.
Wavecyclone
Astormorlowpressurecentrethatmovesalongafront.
Waveperiod
Theperiodisthetimegapbetweensuccessivewavesandthelongertheperiodthefasterthewavestravel.
Usingtheweatherapplication(NorthAmericaonly)
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