NOAA: Rare Tsunami Hit East Coast Earlier This Month « CBS Connecticut

NOAA: Rare Tsunami Hit East Coast Earlier This Month « CBS Connecticut: "Tsunami"

Here is the meaning of the word Tsunami.
This article talks about a Tsunami that was almost 1 ft high.  Doesn't make sense to me.

Catastrophic ocean wave, usually caused by a submarine earthquake. Underwater or coastal landslides or volcanic eruptions also may cause tsunamis. The term tsunami is Japanese for “harbour wave.” The term tidal wave is a misnomer, because the wave has no connection with the tides.