National Weather Service United States Department of Commerce

Heavy Rains and Potential for Flash Floods

Severe thunderstorms with damaging winds and heavy rains will be possible from the Ohio Valley to the Northeast Tuesday. In addition, heavy rains possible in the central Plains and southern Rockies. Heavy rain threat moves into the southern Mid-Atlantic Wednesday. Dry conditions remain out west where isolated dry thunderstorms could exacerbate ongoing fires and start new fires. Read More >

 

Experimental

 

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