Aviation Model; one of the operational forecast models run at NMC. The AVN is run twice daily, with forecast output out to 72 hours.
AViatioN model; one of the operational forecast models run at NCEP. The AVN is run four times daily, at 0000, 0600, 1200, and 1800 GMT. As of fall 1996, forecast output was available operationally out to 72 hours only from the 0000 and 1200 runs. At 0600 and 1800, the model is run only out to 54 hours.
( AV iatio model) - one of the operational forecast models run at NCEP. The AVN is run four times daily, at 0000, 0600, 1200, and 1800 GMT.
"Aviation" numerical weather prediction model generated at the National Centers for Environmental Prediction ( NCEP). No longer called the Aviation Model (AVN) but rather GFS (Global Forecasting System).
Aviation Model generated every 12 hours by NCEP.
AViation ruN of the NCEP MRF model.