Day 1 Day 2 Day 3 Days 4-8 Medium/Long Range Computer Models: RUC UCAR | COD 12 hr CRAS 36 hr ETA KF 36 hr NGM 48 hr HIRESW-NMM 48 hr HIRESW-ARW 48 hr NMS 12z | 00z 48 hr MM5 60 hr UKMET 72 hr RUC 72 hr NAM-WRF UCAR 84 hr SREF 87 hr GEM 144 hr ECMWF 168 hr NOGAPS 180 hr GFS 180 hr | GFS 384 hr