Yes, it means 30% chance of any rain today, and as Cosmos points out it’s based primarily on historical data: 30% of historical situations significantly like this have head rain. And since the estimates update based on new data, they’re practically tautologous.
Yes, it means 30% chance of any rain today, and as Cosmos points out it’s based primarily on historical data: 30% of historical situations significantly like this have head rain. And since the estimates update based on new data, they’re practically tautologous.
I don’t have a reference for that though.