National Weather Service United States Department of Commerce

Rare Southern U.S. Winter Storm; Dangerous Cold Weather For Much of the Eastern U.S.; Critical Fire Weather for Southern California

A rare winter storm impacting the Southern U.S. will move offshore Wednesday morning. Behind the storm, arctic air will continue encompassing the eastern two-thirds of the Nation with only a slow return to normal temperatures expected by the end of the week. Moderate to strong Santa Ana winds and low humidity will maintain Critical fire weather conditions in southern California into Thursday. Read More >

 

NERFC Hydromet Outlook Page

Supporting Gulf of Maine Harmful Algal Bloom (HAB) Monitoring & Forecasting

This hydromet outlook page has been developed to support seasonal Harmful Algal Bloom (HAB) Monitoring and Forecasting Activities in the Gulf Of Maine. Weekly 2-week Outlooks are provided by NERFC from mid-March to early June in support of these activities.



 

30 Day Precipitation Departures

60 Day Precipitation Departures

90 Day Precipitation Departures



 


 


 

NERFC Observed Snow Depth

NOHRSC Observed SWE

NOHRSC Modeled Snow Water



 


 

 

Current Streamflow Forecasts

Current Streamflow Departures

Short-range Ensemble River Forecasts


 


 

Graphical Forecasts for the Northeast

Short Range Forecasts (0.5 - 2.5 days)

Medium Range Forecasts (3 - 7 days)




CPC 6-10 Day Precipitation

CPC 8-14 Day Precipitation

CPC Experimental Week 3-4 Precipitation




NERFC Seasonal Spring Flood Outlook

90 Day Streamflow Forecasts

NCEP Model Guidance