Sign from god or meteorological oddity?

When I was waiting to pick my kids up from the school bus, it started to snow. A snowflake shaped like a tiny, perfect, six pointed star landed on my knee then melted away. A few seconds later, another landed on my arm, then another, larger one on my dog's head. While I waited I saw at least a dozen of them! When my daughter got off the bus, she saw a couple as well. Was this a sign from yahweh that I, my dog and my daughter should immediately convert from atheism to judaism, or just an odd meteorological phenomenon with a perfectly rational explanation?