Following are a number of back-translations as well as a sample translation for translators of Isaiah 28:2:

• Kupsabiny: “Listen, God has prepared a fierce person
  who is powerful.
  That person is like a hailstorm
  that comes with a whirlwind.
  (He) is fierce like a river
  that has overflowed and broken the land.
  (He) shall take/capture the city of Samaria
  and throw it down/destroy it.” (Source: Kupsabiny Back Translation)
• Newari: “The LORD has prepared someone very strong,
  a powerful man, to attack them.
  He will ruin the land like a whirlwind of hail, heavy rain,
  and a flood which no one is able to restrain” (Source: Newari Back Translation)
• Hiligaynon: “Listen! The Lord has-prepared a strong and powerful nation which will-destroy Samaria. This is like a destructive storm/typhoon and rushing flood.” (Source: Hiligaynon Back Translation)