Appear as circular spirals
{"Image DocumentName": "Appear as circular spirals", "Image ImageDescription": "May be 1000 km in diameter and 15 km high. Calm center is the eye & can be km. Occur June \u2013 November in N hemisphere.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}