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Storm Agnes has made landfall with 80mph gusts, downing power lines and causing flooding; trees have been toppled and, in one Irish town, a roof was ripped from a building; but forecasters have warned the worst is still to come, with weather warnings in place across much of the UK.
Ireland was first to be hit by Agnes as the storm felled trees and caused flooding and large waves on the coast - now the UK is next in line.
However, this year, the Mississippi is experiencing low water levels and a weaker flow rate due to drought conditions.
Storm Agnes has brought high winds and heavy rains to the island of Ireland as it makes its way northeast.
The saltwater wedge in the Mississippi River expected to choke off access to freshwater may threaten vulnerable populations sensitive to salt before it impacts the average healthy adult. Those groups, including people with certain health conditions, pregnant women and those with infants using tap water for formula, should closely monitor the levels of salt in water, according to health experts.