Area Forecast Discussion
Issued by NWS Boise, ID

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
FXUS65 KBOI 270248

Area Forecast Discussion
National Weather Service Boise ID
848 PM MDT MON SEP 26 2016

.DISCUSSION...Warm airmass pushed temperatures to 10-15 degrees
above normal today. Warming will continue on Tuesday, though it
will only add a couple of degrees over today`s highs. Current
forecast is on track for tonight so no update.


.AVIATION...VFR and mostly clear. Surface winds: variable 10 kts or
less. Winds aloft near 10 KFT MSL: West at 5-10 kts.


SHORT TERM...Continued clear skies, light winds, and warming temps
as upper ridge moves across the Great Basin Tuesday to the Rocky
Mountains Wednesday.  Surface thermal pressure trough will still be
in our CWA Wednesday.  Monsoon moisture will surge only as far
north as central Nevada Wednesday afternoon.

LONG TERM...Wednesday night through Monday...Upper level ridge will
move east on Thursday as a trough approaches the Pacific Northwest.
As the upper level ridge pushes east, monsoonal moisture from the
Desert Southwest will move north and east across the Great Basin
into eastern Idaho. Showers and thunderstorms will be possible
mainly over the central Idaho mountains and southeast Idaho near the
Magic Valley on Thursday afternoon as the monsoonal moisture moves
through. By Friday the region is in strong southwesterly flow aloft
ahead of a strong cold front which will slowly move through the
region through the weekend. With Typhoon Megi in the Western Pacific
becoming embedded in the jet stream, models are still uncertain on
precipitation placement across our region with this system but
showers and unsettled weather will be present as colder air aloft
moves into the region. Snow levels will lower to around 6500-7000ft
on Sunday and Monday. Temperatures will cool by 15-25 degrees on
Sunday and Monday compared to today, or around 10 degrees below





PREV LONG TERM....KA/WH is the U.S. government's official web portal to all federal, state and local government web resources and services.