Local Forecast Discussion

FXUS65 KPIH 220916

Area Forecast Discussion
National Weather Service Pocatello ID
316 AM MDT Fri Jun 22 2018

.SHORT TERM...Today through Sunday.
Despite weak short wave ridge moving through Idaho expect
scattered showers and isolated thunderstorms today in Upper Snake
River Highlands. An upper low will travel from western Wyoming
southeast into Western Wyoming Saturday with showers and
thunderstorms expected across much of southeast Idaho starting off
the weekend with much colder weather expected Saturday behind a
cold front moving through the region. Expect windy conditions
Saturday as well especially in the Snake River Plain. After
seasonal high temperatures today will have about a 5 to 10 degree
drop on Saturday. Will have dry conditions with a drop in winds
Sunday and warmer conditions but still below normal,.

.LONG TERM...Monday through Friday.
Generally expect dry and warm conditions in the long term period
with above normal temperatures and little precipitation expected.
Next chance for showers will be Thursday into Friday with the
European model projecting a stronger system with a much weaker and
faster system on the GFS model. GFS has a drier solution Thursday
and Friday with much wetter conditions Friday on European. That
far out low confidence in either model.


.AVIATION...Weak high pressure is building into the area
from the west which will bring overall dry conditions until the next
system moves through Saturday. Expect VFR conditions for most TAF
sites today. There is a weak, exiting shortwave that will bring
lingering precipitation/moisture over our northeast areas,
particularly early this morning. KDIJ will see vicinity showers this
morning and, to a lesser degree, vicinity showers and thunderstorms
in the afternoon. With any showers on station, KDIJ may see brief
MVFR cigs this morning. Wyatt


.FIRE WEATHER... A weak short wave will help trigger isolated
showers and thunderstorms this afternoon over the Eastern Highlands,
while the rest of the area will be less breezy and drier than
yesterday. Look for an upper level low to move through the area on
Saturday. This will bring another round of breezy to moderate winds
as well as scattered mountain showers and isolated thunderstorms.
Expect drier conditions on Sunday, though some isolated showers and
thunderstorms may pop up near the Wyoming border. On Tuesday
morning, another cold front/trough pushes through, but models are
keeping our area fairly dry except for northern Lemhi county. This
system will also bring breezy conditions to the Snake Plain. Wyatt




NWS PIH Office Area Forecast Discussion