868
NOUS46 KOTX 220917
PNSOTX
IDZ001>004-026-027-WAZ031>038-041-043-044-047>049-222117-

Public Information Statement
National Weather Service Spokane WA
217 AM PDT Tue Apr 22 2025

.LONG TERMFriday through TuesdayModels are once again converging
on a solution with regards to the upcoming weekend low, after having
flip-flopped over the last several nights. General consensus, across
both ensembles and deterministic guidance, now favors a cutoff low
that centers itself around the Great Basin of Nevada before
transplanting eastward. Net effect of this would be precip for the
majority of the forecast area, with snow levels generally above 5000
feet, however the more southerly track of this low would leave much
of the lower Basin in a dry slot. Once the low moves inland and the
forecast area finds itself within its center, there could be enough
lift to support an isolated weak shower in the lower Basin, mainly on
Saturday, but PoPs are still <20%. The current track of this low
favors precip more in the mountains and foothills, with the lower
Basin northward finding itself more in the dry slot of this upcoming
system.

Could see some isolated thunderstorm activity across the mountains
of central and eastern Oregon with the SW flow leading this low. The
warming were expecting through the midweek will certainly help
add instability, but again, so long as this system takes a more
southerly track, we should expect to be spared from the brunt of
this systems impacts. Even QPF isnt all that impressive, with NBM
probabilistic guidance suggesting only about a 30-40% chance for
at least a quarter of an inch even in the high mountains. So unless
this system shifts in a way that provides for us a more favorable
moisture advection or instability scheme, expect this to more or less
be a typical springtime system, with breezy gap winds as this
system treks through the PacNW.

Ensembles generally depict a benign pattern to kick off next work
week, with clusters leaning towards a ridge building overhead and
temperatures rising back into the 70s across the lowlands. Some
ensemble members depict a more zonal upper-level pattern, which
could inhibit warming, but NBM for now suggests a warming trend
next week. Evans/74

&&

.AVIATION12z TAFsVFR conditions expected. Outside of some few
low to mid-level clouds along the foothills of the WA Cascades
and Blues, expect mostly clear skies and light winds less than 10
kts. Winds will be terrain-driven at night, and flow mostly out of
the N and NW during the day. Evans/74



KDLS 221120Z 2212/2312 29010KT P6SM SKC
  FM221800 VRB04KT P6SM SKC
  FM230300 30005KT P6SM SKC=


KPDT 221120Z 2212/2312 16006KT P6SM FEW100
  FM221700 34008KT P6SM FEW080
  FM230400 10006KT P6SM SKC=


KRDM 221120Z 2212/2312 25005KT P6SM SKC
  FM222000 35010KT P6SM SKC=


KBDN 221120Z 2212/2312 VRB03KT P6SM SKC
  FM222000 35010KT P6SM SKC=


KYKM 221120Z 2212/2312 30007KT P6SM SKC
  FM221800 VRB04KT P6SM FEW070
  FM230300 30005KT P6SM SKC=


KALW 221120Z 2212/2312 18006KT P6SM SKC
  FM221600 24005KT P6SM FEW070
  FM222200 34006KT P6SM FEW070
  FM230300 10006KT P6SM SKC=



KPSC 221120Z 2212/2312 VRB03KT P6SM FEW090
  FM221700 36006KT P6SM SKC=