This document describes two rare weather phenomena: ice balls and snow rollers. Ice balls occur along shores after heavy snowfalls, as the snow is turned to ice by wave motion, forming large frozen balls. Snow rollers are cylindrical snow formations that form when powder snow is blown by winds of 40 km/h over ice or frozen surfaces at temperatures near 0°C, causing the snow to roll into cylinders that can reach 70cm in diameter. Both require precise temperature and wind conditions to form.

1. Vertaald uit het Spaans – Freddy Storm 07/2011

2. ICE BALLS

5. This freak of nature occurs after heavy snow falls
along the shores of large lakes and oceans. The
snow is turned into ice by the motion of the waves,
creating huge frozen ice balls.

8. Thousands of balls of ice the size of a football,
huddle along the shore in a wonderful show. For this
to happen the water temperature should be 0 ° C. A
phenomenon known as "Lolly" by the fishermen of
the Canadian Island of Cape Breton.

14. SNOW ROLLERS

18. A curious meteorological phenomenon of cylindrical snow
formations known as SNOW ROLLERS is rare because the
precise conditions must be present for their formation.

20. .

23. -The frozen surface or ice covered area should glide
with ease to make a roller.
-The ice must be covered with a 2 cm moist layer
thick powder snow and the temperature must be
close to the point where ice melts.

24. -The air temperature must be equal to or slightly
above freezing, between 0 and 1 ° C.
-The wind must be approximately 40 km / hour to
roll the snow.

25. -A gust of wind takes the snow along like a spoonful of
ice cream. Each gust of wind increases its size.

28. The size of the cylinders may reach several
centimeters and one roller had a diameter of 70
cm.

33. Finally, when the roll is too heavy to be
pushed by the wind or comes against an
obstacle, it stops, leaving a trail behind.

39. Gravity also forms snow rollers. The snow falls from a
tree on a slope and rolls down, forming a sphere.