warmoceanwaters - 26.5 degrees celcius, warm water provides the energy needed for the storm to develop
atmospheric conditions - it rises and condenses to form clouds
corioliseffect - causes the air to spin around the low pressure center
eyeformation - which contains the strongest winds and heaviest rainfall
intensification - as long as the storm remains over warm waters and encounters favorable atmospheric conditions, it can continue to strengthen and grow in size
landfallordissipation - it loses its energy source and eventually weakens and dissipates
tropical depression - 62 km per hour or less than 34 nautical miles per hour
tropicalstorm - 62 to 88 kph or 34-47 knots
severetropicalstorm - 87 to 117 kph or 48 - 63 knots