374
FXUS65 KBOI 090812
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
212 AM MDT Thu May 9 2024

.SHORT TERM...Today through Saturday night...An upper level
ridge to our northwest combined with a trough to our southeast
will give us NE flow aloft through Saturday. It will also give
most of us mostly clear skies and warmer temperatures. And while
they will also be warming up, the western Magic Valley and
points south will see a chance of showers and weak thunderstorms
this afternoon into the early evening. Friday will be dry with
temperatures around 5 degrees above normal. Late Saturday, as
the ridge axis weakens and moves overhead, we will have light NW
winds aloft. Temperatures will rise to around 10 degrees above
normal by Saturday.

.LONG TERM...Sunday through Thursday...After our upper flow
shifts to out of the NW late Saturday, a weak trough will move
over the region late Sunday night or Monday. This should bring
increased clouds, but most likely little to no precipitation.
Ensembles indicate this will likely be followed by a return to
NW flow aloft as a new ridge builds along the coast. The latest
GFS is an outlier with its depiction of a trough moving into the
area next Thursday. For now, this solution has been noted but
not included in the forecast. Temps in the long term will be
above normal, with Sunday the most likely to be the warmest at
10-15 degrees above normal. There is high chance (70-99%) of
temps above 80 degrees from Ada County northwest through the
lower Treasure Valley Saturday, then a near 100% chance Sunday.
This high chance extends throughout the upper Treasure Valley
and into the western Magic Valley Sunday.

&&

.AVIATION...VFR with mostly clear skies. Sfc winds: W-N 5-10 kt,
becoming NW through E and increasing to 5-15 kt by 18Z. Winds
at 10k ft MSL: E-NE 10-15 kt north and 15-30 kt south.

KBOI...VFR with clear skies. Sfc winds: NW 10-15 kt with gusts
to 25 kt, diminishing to 10 kt or less by 04Z.

Weekend Outlook...VFR with mostly clear skies.

&&

.BOI WATCHES/WARNINGS/ADVISORIES...
ID...None.
OR...None.

&&

$$

www.weather.gov/Boise

Interact with us via social media:
www.facebook.com/NWSBoise
www.twitter.com/NWSBoise

SHORT TERM...SP
LONG TERM....SP
AVIATION.....SP