This article shall be inoperative unless it shall have been ratified as an amendment to the Constitution by the legislatures of three-fourths of the several states within seven years from the date of its submission to the states by the Congress.
(Redirected from Flash Flood Warning) A flash flood warning (SAME code: FFW) is issued when a flash flood is imminent or occurring in the warned area. A flash flood is a sudden, violent flood after a heavy rain, or occasionally after a dam break. Rainfall intensity and duration, topography, soil conditions, and ground cover contribute to flash flooding.
A (coastal) flood warning is issued when coastal flooding is occurring or is expected to happen in the next day. Again, moderate flooding or worse is needed to trigger a warning. If the flooding is only minor, then a coastal flood advisory will be issued instead. Courtesy: FEMA and the National Weather Service