10 - 100 Days Operational Models
Global Ensemble Forecast System
Description/Overview: The Global Ensemble Forecast System (GEFS), previously known as the GFS Global ENSemble (GENS), is a weather forecast model made up of 21 separate forecasts, or ensemble members. The experimental GEFS version 12 is premised upon the Global Forecast System (GFS) model.
Climate Prediction Center
Description/Overview: The Climate Prediction Center (CPC) is responsible for issuing seasonal climate outlook maps for one to thirteen months in the future. In addition, the CPC issues extended range outlook maps for 6-10 and 8-14 days as well as several special outlooks, such as degree day, drought and soil moisture, and a forecast for daily ultraviolet radiation index. Many of the outlook maps have an accompanying technical discussion. The CPC's outlook and forecast products complement the short range weather forecasts issued by other components of the National Weather Service (e.g. local Weather Forecast Offices, and National Centers for Environmental Prediction). These weather and climate products comprise the National Weather Service's Suite of Forecast Products. Temperature and Precipitation Forecasts: The National Weather Service CPC employs 3 to 12 month forecasts of temperature and precipitation.