Cirrus Clouds

Cirrus clouds are characterized by high ice crystals, pumped high in the sky by a vortex, blown ahead by high winds. They general bring good weather if winds are from W NW to N. Precipitaion is likely within 20 to 30 hours if winds steady from NE E to S. They warn of a coming storm if coming from the southwest.

Other varieties include:

Cirrus fibratus

Cirrus spissatus

Cirrus spissatus

Cirrus above 45⁰

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