stolen Specialized Glove Live 1

I left my bike for about 24 hours locked to a street sign or a stop sign on N. Dorgenois and Esplanade. It was pouring rain all day yesterday, so I couldn't go get it. I went to get it first thing this morning and it appears they removed the sign, then slid my bike up the pole with the lock still on it, and took it. I suspect they either stole it yesterday between 4 and 6 (I always leave my bike over here and this has never happened at this time) or very early this morning.