According to TechCrunch, Spire has just landed $40 million in Series B funding led by an earlier backer, Promus Ventures. Bessemer Venture Partners and Jump-Capital also joined the round, as did previous investors RRE Ventures and Lemnos Labs.

The financing brings the company's total funding to roughly $80 million - a fair amount for a company that employs just 57 people and turns three in September. Then again, Spire has huge ambitions to become a big player in the weather data market and to strengthen its position as a provider of maritime data. In fact, says David Cowan, a partner with Bessemer, by some time next year, Spire 'will have the largest constellation of satellites known to man.'