Area Forecast Discussion
Issued by NWS Boise, ID

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FXUS65 KBOI 200922

Area Forecast Discussion
National Weather Service Boise ID
322 AM MDT Fri Apr 20 2018

.SHORT TERM...Today through Saturday...The deep trough of low
pressure that moved eastward through the southwest US will work
its way into the southern plains today. High pressure is expected
to move over the Pacific Northwest in its wake, both in the mid
and upper levels. This will lead to generally clear conditions and
mild temperatures. At the surface a significant pressure gradient
remains in place this morning, and breezy conditions will
continue through the day for valley areas from Baker City to Twin
Falls. Models are in good agreement that a weak trough will
suppress the ridge Saturday, with an increase in clouds, dip in
temperatures, and another round of breezy conditions expected. No
significant impacts are anticipated through the short term period.

.LONG TERM...Saturday night through Friday...Westerly flow aloft
Saturday night and Sunday will keep temperatures near normal.
Clouds will increase on Sunday as a weak upper level trough moves
inland. Showers will begin over the higher terrain Sunday
afternoon, spread to the valleys Sunday night, then end from the
west on Monday as the trough exits and an upper level ridge builds
over the region. Temperatures will average around 5 degrees above
normal Wednesday through Friday.


.AVIATION...VFR today with mostly clear skies. Surface winds
northwest 5-15 kts this morning increasing to 10-20 kts this
afternoon. Winds aloft near 10k ft MSL northwest to north 15-25 kts.

Weekend outlook...VFR. Isolated showers over the higher terrain
Sunday afternoon.





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