The appearance of cirrus clouds over the eye of a hurricane indicates that _________.

Cirrus cloud motion can be used to determine which direction the incoming weather is coming from. Cirrus clouds typically signal an impending weather change that will take place within the next 24 hours. Cirrostratus are thin, sheet-like clouds that typically completely cover the sky.

A group of lofty clouds called Cirrus are comprised of ice crystals. The characteristic appearance of cirrus clouds is fragile and wispy with white filaments. Cirrus often develops when warm, dry air rises, forcing water vapor to condense at high altitudes on stony or metallic dust particles.
Cirrus clouds have a net heating impact and can cover up to 25% of the Earth at night (up to 70% in the tropics). The clouds effectively absorb outgoing infrared radiation when they are thin and translucent, but they only slightly reflect the incoming sunshine.
The greenhouse effect occurs when the temperature of the atmosphere beneath cirrus clouds rises by an average of 10 °C (18 °F) when the clouds are 100 m (330 ft) thick.
Cirrus clouds reflect only about 9% of the incoming sunlight but block over 50% of the outgoing infrared radiation from escaping. Globally, the production of clouds causes a loss of 5 °C (9 °F) in surface temperature, primarily due to stratocumulus clouds.

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