Alaska Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
351 PM EDT Fri Jun 14 2019
Valid 12Z Tue Jun 18 2019 - 12Z Sat Jun 22 2019
The forecast period begins on Tuesday with a broad upper low over
the Gulf of Alaska and an upper level ridge extending northward
across the western Aleutians and the Bering Sea. The model
consensus is for the upper low to track inland across the
southeast Panhandle and then northern British Columbia by
Wednesday. Greater model differences exist with a second upper
level low developing near the southwest Alaska mainland and its
evolution towards the end of the week, with the CMC and GFS better
defined and farther north, and the ECMWF weaker and farther south.
This will have an effect on the next storm system to develop over
the Gulf region. The forecast becomes quite uncertain by the end
of the forecast period next Saturday regarding the eventual
break-down of the Bering Sea ridge and the overall amplitude of
the upper level pattern.
A relatively quiet weather pattern is expected to continue going
into next week with no significant events. There will be an
increased chance of showers and high elevation snow for southeast
Alaska through Wednesday in association with the upper low moving
inland, and generally drier conditions farther to the north and
west. Pleasant temperatures are expected with highs generally
from the mid 60s to upper 70s across inland areas, and colder near
the coasts.
Hamrick
Additional 3-7 Day Hazard information can be found on the WPC
medium range hazards chart at:
https://www.wpc.ncep.noaa.gov/threats/threats.php
No significant hazards are expected over Alaska during this
forecast period.
WPC medium range Alaskan products including 500mb, surface
fronts/pressures progs and sensible weather grids can also be
found at:
https://www.wpc.ncep.noaa.gov/alaska/ak_5dayfcst500_wbg.gif
https://www.wpc.ncep.noaa.gov/alaska/akmedr.shtml
https://www.wpc.ncep.noaa.gov/alaska/ak_5km_gridsbody.html