HURRICANE INFO
FOR THE  BRITISH VIRGIN ISLANDS & CARIBBEAN

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Hurricanes and Hangovers and Other Tall Tales and Loose Lies from the Coconut Telegraph by Dear Miss Mermaid
HURRICANE & TROPICAL STORM  INFOhurricane forecasts for the bvi and caribbean

TROPICAL CYCLONE CLASSIFICATIONS

Tropical Depression (numbered)
    20 - 34 knots
Tropical Storm (named)
    35 - 64 knots
Hurricane (named)
    65 knots or higher

Saffir-Simpson Scale
Category Wind - Knots Wind - MPH Pressure - MB
1  65 -  82  74 -  95 > 980
2  83 -  95  96 - 110 965 - 979
3  96 - 113 111 - 130 945 - 964
4 114 - 135 131 - 155 920 - 944
5 > 135 > 155 < 920
Intensity classifications

Tropical waves
, or easterly waves, also known as African easterly waves in the Atlantic region, are a type of atmospheric trough, an elongated area of relatively low air pressure, oriented north to south, which move from east to west across the tropics causing areas of cloudiness and thunderstorms. West-moving waves can also form from the tail end of frontal zones in the subtropics and tropics and may be referred to as easterly waves, but these waves are not properly called tropical waves; they are a form of inverted trough sharing many characteristics with fully tropical waves. All tropical waves form in the easterly flow along the southern side of the subtropical ridge or belt of high pressure which lies north and south of the Intertropical Convergence Zone (ITCZ). Tropical waves are generally carried westward by the prevailing easterly winds along the tropics and subtropics near the equator. They can lead to the formation of tropical cyclones in the north Atlantic and northeast Pacific basins.

Three tropical cyclones at different stages of development. The youngest, though recently upgraded to a tropical storm, lacks the organization of the other two.Tropical cyclones are classified into three main groups, based on intensity: tropical depressions, tropical storms, and a third group of more intense storms, whose name depends on the region.

A tropical depression
is an organized system of clouds and thunderstorms with a defined surface circulation and maximum sustained winds of less than 17 m/s (33 kt, 38 mph, or 62 km/h). It has no eye, and does not typically have the organization or the spiral shape of more powerful storms. It is already a low-pressure system, however, hence the name "depression."

A tropical storm is an organized system of strong thunderstorms with a defined surface circulation and maximum sustained winds between 17 and 32 m/s (34–63 kt, 39–73 mph, or 62–117 km/h). At this point, the distinctive cyclonic shape starts to develop, though an eye is usually not present. Government weather services assign first names to systems that reach this intensity (thus the term named storm).

A hurricane or typhoon (sometimes simply referred to as a tropical cyclone, as opposed to a depression or storm) is a system with sustained winds greater than 33 m/s (64 kt, 74 mph, or 118 km/h).[1] A tropical cyclone tends to develop an eye, an area of relative calm (and lowest atmospheric pressure) at the center of circulation. The eye is often visible in satellite images as a small, circular, cloud-free spot. Surrounding the eye is the eyewall, an area about 10–50 mi (16–80 km) wide in which the strongest thunderstorms and winds circulate around the storm's center.

Hurricane Names 2010-2015
2010 Alex Bonnie Colin Danielle Earl Fiona Gaston Hermine Igor Julia Karl
Lisa Matthew Nicole Otto Paula Richard Shary Tomas Virginie Walter
2011 Arlene Bret Cindy Don Emily Franklin Gert Harvey Irene Jose Katia
Lee Maria Nate Ophelia Philippe Rina Sean Tammy Vince Whitney
2012 Alberto Beryl Chris Debby Ernesto Florence Gordon Helene Isaac Joyce Kirk
Leslie Michael Nadine Oscar Patty Rafael Sandy Tony Valerie William
2013 Andrea Barry Chantal Dorian Erin Fernand Gabrielle Humberto Ingrid Jerry Karen
Lorenzo Melissa Nestor Olga Pablo Rebekah Sebastien Tanya Van Wendy
2014 Arthur Bertha Cristobal Dolly Edouard Fay Gonzalo Hanna Isaias Josephine Kyle
Laura Marco Nana Omar Paulette Rene Sally Teddy Vicky Wilfred
2015 Ana Bill Claudette Danny Erika Fred Grace Henri Ida Joaquin Kate
Larry Mindy Nicholas Odette Peter Rose Sam Teresa Victor Wanda