The legacy OPC website URL permanently redirects to On or after July 9, 2019 the old URL will not work. Users must use to access the OPC website. More information is available at

Graphical Forecast Verification

Step 1: Select the Charts:   Display the   With the  Hour Forecast   

Step 2: Select the Times*:  Atlantic Surface Analysis Valid:          48 Hour Forecast Valid: 
Step 3: Choose the Resolution:   Standard Large XL
Step 4:
Displaying the Atlantic Surface Analysis Valid: 00Z Jan 01 1970analysis image Displaying the 48 Hour Forecast Valid: 00Z Jan 03 1970forecast image

*NOTE: Ensure the valid times on the charts match each other. Either the 48-hour or 96-hour forecasts can be verified by using the drop down menu to select a similar valid date and time.