Scientific Forecaster Discussion
fxus65 kboi 222028
Area forecast discussion
National Weather Service Boise Idaho
228 PM MDT Thu Jun 22 2017
Short term...tonight through Sunday...northwest flow will relax
as an upper ridge builds over the intermountain northwest through the
weekend. Conditions will remain dry and temperatures will warm in
response to the building ridge. By Sunday, temperatures climb
into the mid 90s in the lower valleys and the low-mid 80s in the
mountains. The first signs of increasing mid-level moisture will
arrive in the form of cumulus build-ups over far southeast Oregon
Long term...Sunday night through Thursday...the upper level
ridge begins to slowly break down Sunday night as an upper level
low in British Columbia starts to impact the area. A trough
embedded in the flow pushes through Sunday night which could be
enough for afternoon thunderstorms to develop. Models are still in
disagreement on placement of the precipitation associated with
this low, but chances are still there to see afternoon
thunderstorms each day during the extended period. Temperatures
drop back to normal by the end of the period.
Aviation...VFR. Mostly clear skies. Gusty northwest surface winds
20-35 kts. Winds aloft to 10k feet msl, northwest-north 10-30 kts.
Idaho...red flag warning until 9 PM MDT this evening idz420-424-426.