While much of our winter here in the Pacific Northwest (PNW) has been relatively dry, that has quickly changed due to an atmospheric river coming from the Pacific Ocean. The PNW states, Oregon and Washington, have been experiencing record-breaking rainfalls. 

Atmospheric rivers typically occur when water vapor from the ocean rises and becomes concentrated in narrow bands of moisture in the atmosphere. This water vapor condenses and moves around due to high-pressure and low-pressure systems, often delivering significant precipitation when it makes landfall.

This year, Oregon and Washington experienced some of their driest conditions on record. Under normal circumstances, an atmospheric river works to ease dry periods, but in this case, the atmospheric river has instead triggered major flooding across the PNW region.

During periods of heavy rainfall and flooding, there are several steps residents can take to stay safe. 

• Stay Informed: Monitor weather alerts from the National Weather Service and local emergency agencies. Be sure to update your neighbors, too! Community is important in these events; make sure to take care of each other.
• Prepare your home: Make sure to clean those gutters, clear storm drains, and make sure your downspouts are functioning properly. If you live in a flood-prone area, consider using sandbags or barriers around any vulnerable entrances. 
• Report Flooding: If you see any flooding, report it on our iFlood page and provide as much detail as possible. 

As the Pacific Northwest continues to brace for this incoming atmospheric river, preparation and awareness will be key to reducing potential impacts. Remember to stay informed and communicate information with your communities.