Alaska Extended Forecast Discussion NWS Weather Prediction Center College Park MD 210 PM EST Wed Feb 21 2018 Valid 12Z Sun Feb 25 2018 - 12Z Thu Mar 01 2018 *** Limited model data available *** Upper pattern near Alaska next week will feature punctuated ridging south of the Gulf of Alaska with a westward moving upper low through the Arctic. This should take a lead storm through the Bering and then into/through the Gulf with another system entering the western Bering Sea next Wed/Thu. The models have bounced around a bit with the track of the first system but opted to lean on the better clustering of the 00Z GFS/Canadian (and ECMWF) rather than the much quicker 12Z GFS. After that, ECMWF and GEFS means diverge in how to handle the next Bering system. Stayed closer to the ECMWF ensemble mean given continuity, but with limited confidence. Fracasso