National Weather Service United States Department of Commerce

Atmospheric River in the Pacific Northwest and Northwest California Early This Week

An atmospheric river event will bring heavy rains and rising snow levels to the Pacific Northwest and northwest California early this week. Snow levels will rise above 8,000 feet, and 4 to 7 inches of rain is forecast for the southwest facing slopes of the mountains. Minor river and localized flooding will be possible. In the east, winds decrease by Monday, and the week will be relatively dry. Read More >

 

 

 

What to Report

 

Spotters are encouraged to report the following phenomena, if it is safe to do so

 

 

Tornadoes

Flooding

Winter Weather

  • Tornado
  • Funnel Cloud
  • Wall Cloud
  • Persistent Rotation

 

 

  • Flooding that results in evacuations
  • Water rescues: cars, roofs, or trees
  • Water Rapidly rising, or entering homes, not just basements
  • Roads Impassable or closed due to high water
  • Small Streams or rivers overflowing their banks
  • Moderate coastal flooding, not just nuisance inundation
  • 1” Snow in 24 hours
  • 1” Snow in past hour
  • Freezing Rain/Drizzle
  • Any Ice Accumulation

 

Thunderstorms

 

Miscellaneous

  • Tree uprooted or downed
  • > 1 large limb downed
  • Power lines downed
  • Hail (any size)
  • Rain > 1” in past hour
  • Winds > 40 MPH
  • Damage to Structures
  • Tsunami

 

Any injuries or deaths that are weather related

 

Note: Lightning is not a reportable phenomenon, but lightning related damage and casualties are.