Boy has it been raining today! Now that darkness has descended it seems to have abated but only a couple of hours ago I took this video of one of the many flooded intersections in town.
I've often heard that Hoboken is a flood zone but to confirm this I went to what, I hope, is an authoratative source: FEMA. Indeed, FEMA considers almost all of Hoboken to be in a flood zone as you can see from this map (PDF).