Alaska Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
444 PM EDT Tue Jun 11 2024
Valid 12Z Sat Jun 15 2024 - 12Z Wed Jun 19 2024
...Overview, Guidance Evaluation, & Preferences...
The guidance shows reasonable agreement on an Omega Block slowly
flattening over time. This leaves a deep layer cyclone drifting
eastward from the Aleutians into the northeast Pacific with time
and allows a front to cross portions of western and northern AK.
The pressures, winds, and QPF were a blend of the 12z
deterministic guidance with increasing amounts of the 00z ECMWF
and 12z NAEFS means with time. The remainder of the grids heavily
relied upon the 19z NBM.
...Weather/Hazards Highlights...
Winds near gale force at times across the Aleutians, AK Peninsula,
and North Slope. Precipitation chances slowly gain real estate
across AK as the ridge slowly erodes; precipitation amounts are
expected to be modest. High temperatures are forecast to range
from the upper 30s in the North Slope, 40s in the Aleutians, the
50s along the southern coast, and the 70s/near 80F across the
interior. Low temperatures are expected to dip below freezing
across the North Slope and the higher terrain of south-central and
southeast AK.
Roth
Additional 3-7 Day Hazard Information can be found on the WPC
medium range hazards outlook chart at:
https://www.wpc.ncep.noaa.gov/threats/threats.php
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