Atmospheric rivers are around 250-375 miles wide

Coastal

mountains

1. The atmospheric river carries moisture from the tropics to the coast

2. As the "river" moves inland it sweeps over mountain ranges

3. As the water vapour rises it cools, creating heavy rainfall

Atmospheric rivers are around 250-375 miles wide

Coastal

mountains

1. The atmospheric river carries moisture from the tropics to the coast

2. As the "river" moves inland it sweeps over mountain ranges

3. As the water vapour rises it cools, creating heavy rainfall