Consider the following statements: 1. Jet streams occur in the Northern Hemisphere only. 2. Only some cyclones develop an eye. 3. The temperature inside the eye of a cyclone is nearly 10 degree C lesser than that of the surroundings. Which of the statements given above is/are correct?

1. Jet streams occur in the Northern Hemisphere only — Incorrect. Jet streams are high-altitude westerly winds found in both hemispheres, though they are more studied in the Northern Hemisphere.

2. Only some cyclones develop an eye — Correct. A well-defined eye forms only in strong, mature cyclones; weaker cyclones may not have an eye.

3. The temperature inside the eye of a cyclone is nearly 10°C lesser than that of the surroundings — Incorrect. The eye is generally warmer than its surroundings due to subsiding air, not cooler.

Hence, only statement 2 is correct.