National Weather Service United States Department of Commerce

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

WFO PHI Weather Product Criteria

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-- Convective:
  Tornado Warning
  Severe Thunderstorm Warning
  Special Weather Statement

-- Flooding:
  Flash Flood Warning
  Flood Warning
  Flood Advisory
  Flood Watch

-- Heat:
  Extreme Heat Watch or Warning
  Heat Advisory

-- Wind:
  High Wind Watch or Warning
  Wind Advisory

-- Fog:
  Dense Fog Advisory
  Freezing Fog Advisory

-- Frost/Freeze:
  Freeze Season Begins
  Freeze Season Ends

-- Fire Weather:
  Fire Weather Watch or
Red Flag Warning
NWS Philadelphia/Mount Holly

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