NWS ALY
.LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...
Period of relative calm Tuesday-Wednesday, before possible storm
system affects at least portions of region for Thursday-Friday.
There are signals from multiple global models and their ensemble
suites of a developing coastal storm for Thursday-Friday, although
the exact details regarding any track or evolution are obviously
sketchy at this time range. However, several pieces of the puzzle
which suggest some form of a slow moving, potentially high-impact
storm include a possible strong blocking upper level high
retrograding west/southwest to the south of Greenland, as well as
strong pieces of energy both in the northern and southern stream
approaching from the west. If the two incoming pieces of energy are
timed just right and phase, the retrograding block to the north
could allow for a closed mid/upper tropospheric low to develop, and
could allow any surface low to remain slow moving, although too
strong of a block could shunt the storm farther south and east of
the region and limit any impacts. These initial signals could favor
an elevation snow storm across the region, if not more widespread.
So again, trends will need to be watched through the upcoming week.
For now, chances of rain/snow in valleys, and mainly snow for higher
elevations have been included for late Thursday into Friday. Daytime
highs are currently forecast to be in the upper 30s to mid 40s
Thursday, cooling to the 30s to around 40 Friday, although these
temperatures could be colder if stratiform precipitation occurs.
Overnight lows mainly in the upper 20s to lower/mid 30s.
"You just need to go at that shit wide open, hang on, and own it." —Camp