Pacific Storm Moves Inland; Clipper System for the Northeast; Strong Storm Impacting Alaska

A Pacific system will bring low elevation rain and isolated thunderstorms to California tonight. Heavy snow is expected for the Sierra Nevada through late tomorrow. In the Northeast, snow may cause hazardous travel this evening into tomorrow. In Alaska, a powerful storm will bring dangerous seas, blizzard conditions, strong winds and bitterly cold across the state through mid-week. Read More >

ICE Buildup on Rivers

When Arctic air stays in our area for an extended period of time during the winter months there may be ice buildup on the rivers. If the ice moves there can be a rapid rise in the water level and there is potential for subsequent flooding behind jams. The National Weather Service monitors the rivers and streams and will issue ice statements and flood potential outlooks on a periodic basis. The following products discuss these conditions:
Hydrologic Outlook (PHLESFPHI FGUS71 KPHI) Note: This product will have a FLOOD POTENTIAL OUTLOOK if needed.
The National Ice Center (NIC) website provides worldwide operational sea ice analyses and forecasts for the armed forces of the U. S. and allied nations, the Departments of Commerce and Transportation, and other U. S. Government and international agencies, and the civil sector. more...
Several pictures of ice packs are available from our storm archives.
River Ice Reports Submit a report View River Ice Reports Current RIVER ICE STATEMENT (May need to check Previous Version(s))