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 270849

Area Forecast Discussion
National Weather Service Boise ID
249 AM MDT Thu Jul 27 2017

.SHORT TERM...Today through Friday...A weakening upper level low
will move northeast across the area today, helping to initiate one
last round of showers and thunderstorms before it departs tonight.
Most of this activity will be on the Idaho side of the border, but
convection cannot be ruled out in the higher terrain of Baker
County and along the Oregon/Idaho border, especially early in the
afternoon. Temperatures will be near normal today before warming
rapidly to the upper 90s in the lower elevations tomorrow as upper
level ridging develops. Sufficient moisture will remain for a
slight chance of showers and thunderstorms Friday afternoon in the
higher terrain, once again mainly on the Idaho side. Winds will
be relatively light and diurnally driven except near showers and
storms, where gusts to 40 mph will be possible. Changes to the
forecast were small this morning.

.LONG TERM...Friday night through Wednesday...Models are in good
agreement that the extended will be dominated by an upper level
high located to the southeast of the area. However, the location
of the center of the low is depicted differently in the GFS and
ECMWF, and this consequently dictates how much monsoon moisture
will be available for showers and thunderstorms here. There is low
confidence in this precipitation forecast, but high confidence
that temperatures will remain above normal through the period.


.AVIATION...VFR. Showers and thunderstorms through 28/03Z. Expect
variable gusty winds up to 40 kts near thunderstorms. Otherwise,
surface winds will be variable less than 10 kts. Winds aloft near
10 KFT MSL: Southwest 10-15 kts.





AVIATION.....EP is the U.S. government's official web portal to all federal, state and local government web resources and services.