Before you skate outside this winter, make sure the ice is safe. Not all sources agree on the required thickness. Most accept that six inches of solid, clear lake ice is safe for skating. Large skating parties, with more concentrated weight, may require eight inches. Remember, ice thickness may vary and is not the only factor.
Slushy ice is much weaker than solid, clear ice.
Never skate where the ice is thawing, or has cracks. Never skate over a stream. The current can wear away the bottom of the ice and weaken it. Look for ice that has been tested by local officials and posted for skating. If in doubt, stay off the ice, or find a rink.