Area Forecast Discussion
Issued by NWS Pocatello, ID

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FXUS65 KPIH 230849
AFDPIH

Area Forecast Discussion
National Weather Service Pocatello ID
249 AM MDT SAT JUL 23 2016

.SHORT TERM...Today through Monday.
Expect much cooler conditions today with high temperatures near
seasonal normal. Should be mainly dry but a weak wave aloft
pushing through the state may bring isolated thunderstorms to the
Island Park area this afternoon. Temperatures will begin to warm
again Sunday with well above normal conditions by Monday. No
precipitation is expected Sunday or Monday. Expect some breezy
conditions in the Snake River Plain with 10 to 20 mph winds
expected. Light winds expected Sunday and Monday.
GK

.LONG TERM...Tuesday through Saturday.
Dry and very warm weather is expected throughout the long term
period.
GK

&&

.AVIATION...A dry west flow will prevail across the region today
with gusty west winds at the Snake Plain terminal sites this
afternoon. Huston
&&

.FIRE WEATHER...The low pressure trough that produced the strong
gusty winds across the region Friday was lifting NNE into southern
Canada this morning leaving a moderately strong dry west flow across
SRN Idaho. Numerical models continue to show a weak secondary trough
digging into WRN Montana this afternoon resulting in breezy
conditions throughout the Snake River Plain this afternoon and
perhaps producing near Red Flag conditions across the Arco desert
and INL. The ridge begins to rebound across SRN Idaho Sunday and
continuing into Monday with a return to hot and dry conditions. The
ridge breaks down Monday night/Tuesday as a shallow trough migrates
east through Idaho resulting in late afternoon and evening
thunderstorms along and east of the Montana/Wyoming borders. At a
minimum, breezy winds should return to the Snake River Plain Tuesday
afternoon and Wednesday as that system passes east of the divide
leaving a modest west flow aloft over SRN Idaho. The high pressure
ridge begins to rebound across the WRN states Thursday and Friday
promoting hot and dry conditions for SRN Idaho once again. Sub-
tropical moisture appears to pool to our south across Nevada with a
potential push northward into Idaho Saturday and Sunday ahead of the
next incoming Pacific trough which will sweep east along the
Canadian border bringing another round of strong gusty winds to
Idaho Sunday or Monday. Huston
&&

.PIH Watches/Warnings/Advisories...
None.
&&

$$



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