🔹 What is a Cyclone?

A cyclone is a low-pressure system where air moves towards the center and rises upward, creating stormy weather.

---

🔹 Formation of Cyclones

Cyclones form when:

• Warm ocean water heats the air
• Air rises → creates low pressure
• Surrounding air rushes in
• Rotation begins due to the Coriolis Effect

---

🔹 Types of Cyclones

1. Tropical Cyclones

• Form over warm oceans (temperature > 26°C)
• Strong winds, heavy rainfall

Examples (regional names):

• Cyclone (India Ocean)
• Hurricane (Atlantic Ocean)
• Typhoon (Pacific Ocean)

---

2. Temperate Cyclones (Extratropical)

• Form in mid-latitudes
• Caused by meeting of warm and cold air masses

---

🔹 Structure of a Cyclone

• Eye – Calm center
• Eyewall – Most violent winds
• Rainbands – Spiral bands of clouds

---

🔹 Characteristics of Cyclones

• Low pressure at center
• Inward spiraling winds
• Heavy rainfall and thunderstorms
• Strong wind speeds

---

🔹 Effects of Cyclones

⚠️ Negative Effects

• Floods
• Destruction of houses and crops
• Storm surges (sea water rise)
• Loss of life and property

🌟 Positive Effects

• Bring rainfall in dry regions
• Help maintain atmospheric balance

---

🔹 Cyclone Management

• Early warning systems
• Evacuation plans
• Coastal shelters
• Disaster preparedness

---

🌤️ ANTICYCLONES

🔹 What is an Anticyclone?

An anticyclone is a high-pressure system where air sinks and moves outward from the center.

---

🔹 Formation of Anticyclones

• Cooling of air → increases density
• Air sinks → creates high pressure
• Air moves outward from the center

---

🔹 Characteristics of Anticyclones

• High pressure at center
• Outward wind movement
• Clear skies and dry weather
• Light winds

---

🔹 Effects of Anticyclones

🌟 Positive Effects

• Pleasant weather
• Ideal for agriculture harvesting
• Clear skies for travel

⚠️ Negative Effects

• Can cause drought
• Fog and cold waves in winter
• Air pollution trapping

---

🔁 Difference Between Cyclones & Anticyclones

Feature	Cyclone	Anticyclone
Pressure	Low pressure	High pressure
Wind Direction	Inward (towards center)	Outward (away from center)
Air Movement	Rising air	Sinking air
Weather	Cloudy, rainy, stormy	Clear, dry, calm
Wind Speed	Strong	Light

---

🔹 Wind Direction (Important Concept)

• Northern Hemisphere:
  • Cyclone → Anti-clockwise
  • Anticyclone → Clockwise

👉 Due to the Coriolis Effect

---

1. Cyclones bring intense weather and hazards, while anticyclones bring stable weather conditions.
2. Both are important parts of the Earth’s atmospheric system.
3. Understanding them helps in disaster management and weather forecasting.