Area Forecast Discussion
Issued by NWS Pocatello, ID

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FXUS65 KPIH 220809
AFDPIH

Area Forecast Discussion
National Weather Service Pocatello ID
209 AM MDT MON AUG 22 2016

.DISCUSSION...A strong cold front will arrive today. There`s
still quite a bit of dry air across the region so we are not
expecting any thunderstorms. However, it will be rather breezy and
a lake wind advisory remains in effect for the American Falls
Reservoir. It will remain breezy on Tuesday from around Idaho
Falls to Shoshone and south, but probably not as strong as Today.
On Wednesday, a low pressure system will arrive from Montana. This
will reinforce the cool air over the region and possibly bring a
few showers to the central Idaho mountains and the upper Snake
highlands for Wednesday and Thursday. This system moves away from
the region Friday. Long range models show another system arriving
on Sunday producing the next shot at showers and thunderstorms.

Valle

&&

.AVIATION...Widespread VFR with breezy southwest winds in the Snake
Plain this afternoon. Winds will also be rather strong and gusty
in the Snake Plain on Tuesday. RS

&&

.FIRE WEATHER...A strong cold front will pass the Salmon area
about 12Z this morning and reach the Arco Desert 17-18z. A Red Flag
Warning for strong gusty winds and low humidity remains in effect
for all zones except 427 until 9 pm MDT this evening. For Tuesday,
the surface pressure gradient remains strong enough in the Middle
Snake Plain for wind gusts to 30 mph. Red Flag conditions will
probably repeat in Zones 425 and the south half of 410. Wednesday
and Thursday, a disturbance will slides SE along the Divide and
bring a slight chance of showers and thunderstorms to areas north of
Stanley, Mackay and Island Park. Temperatures cool about 5 to 8
degrees on those days. Friday and Saturday will be mostly shower
free under westerly winds aloft. Then Saturday night into Sunday,
latest models hint at some monsoon moisture slipping into Idaho
ahead of an approaching disturbance off the Pacific. RS

&&

.PIH Watches/Warnings/Advisories...
Red Flag Warning from noon today to 9 PM MDT this evening for
IDZ410-411-413-422-425-475-476.

Lake Wind Advisory from noon today to 9 PM MDT this evening for
IDZ021.

&&

$$



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