Accumulated Net Degree Days (Freezing Degree Days and Thawing Degree Days) are calculated from NOAA Real-Time Mesoscale Analysis (RTMA) and National Blend of Models (NBM) for forecast guidance. Ice Timing Outlooks provide guidance on likelihood of water freezing or ice thawing/breaking-up over the next 9 days using multiple weather parameters including temperature, humidity, wind, and cloud cover.
