Area Forecast Discussion
Issued by NWS Pocatello, ID

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FXUS65 KPIH 272058

Area Forecast Discussion
National Weather Service Pocatello ID
158 PM MST Mon Feb 27 2017

.SHORT TERM...Tonight through Thursday. Upper trough axis
and attending snowfall currently working through the region and
should clear the ERN border this evening. Thus have extended the
Advisory to 8pm per the HRRR model progs. Secondary storm system
follows late tonight/Tuesday with another round of light snowfall
and strong afternoon winds within the Snake River Plain. Thus the
wind advisory remains of track for Tuesday afternoon. A moderately
strong and moist NW flow will remain over the region Tuesday night
through Thursday resulting in light ongoing snowfall across the
CNTRL and NE mountains in upslope NW flow and slowly warming
temperatures. Huston

.LONG TERM...Thursday night through Monday.
Will see a continued warm up Friday with temperatures getting back
close to seasonal normals with any showers mainly limited to the
central mountains and Upper Snake River Highlands along the Wyoming
and Montana borders.   By Saturday high temperatures should be up
into the low 40s to around 50 in the Snake Plain and eastern Magic
Valley ahead of a cold front.   Temperatures should remain above
freezing Saturday night with snow melt flooding again becoming a
concern.   GFS and European differ in timing of cold frontal passage
Sunday with European much quicker early Sunday and GFS not driving
it through until late Sunday night.  Have high temperatures dropping
back to below seasonal normal Sunday and Monday. GK

.AVIATION...Band of snow worked through the region with brief IFR
conditions at SUN, BYI and PIH and at 1 pm at IDA.  Expect IDA to
improve rapidly this afternoon once band exits.  SUN, BYI and PIH
have returned to VFR or MVFR conditions.   Expect some MVFR to IFR
conditions at DIJ this evening as this band moves through.  Expect
BYI, SUN and PIH to be mainly VFR with possible MVFR ceilings at IDA
and DIJ overnight.   10 to 20 knot winds expected at BYI, PIH and
IDA.  Expect windy conditions by Tuesday afternoon with 20 to 30
knot sustained at those 3 sites.   Snow showers again a possibility
Tuesday especially at SUN and DIJ with MVFR to IFR ceilings
expected. GK

.HYDROLOGY...Cooler temperatures have helped to mitigate snow melt
issues. The next warm up comes late this week peaking on Saturday
with snow melt follow-through expected into Sunday. Huston

Wind Advisory from noon to 6 PM MST Tuesday for IDZ020-021.

Winter Weather Advisory until 8 PM MST this evening for IDZ019-023-

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