National Weather Service United States Department of Commerce

Record Cold in the Central and Southern U.S.; Pacific Northwest Region Braces for Another Storm

An arctic air mass will continue over the Central and Southern U.S. producing widespread, record-breaking cold temperatures through Friday. An atmospheric river will impact the Pacific Northwest states over the weekend with heavy rain and high mountain snow. 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:
  Excessive 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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