Sunrise 6:45 AM   Sunset 8:27 PM Moonrise 4:27 PM   Moonset 4:34 AM

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FXUS65 KPIH 200812 AFDPIH

Area Forecast Discussion National Weather Service Pocatello ID 212 AM MDT Sat Apr 20 2024

SHORT TERM
Today through Sunday Night.
Quiet weather continues for our Saturday as a ridge of high pressure passes over eastern Idaho. Mid and upper level clouds will pass through today, too, which may bring just enough moisture to squeeze out a shower or two in the mountains, but overall we will stay dry as our gradual warming trend continues. In the Magic Valley and lower Snake Plain, look for highs in the mid to upper 60s this afternoon with upper 50s and low 60s in the upper Snake Plain. Even in the higher elevations we'll push into the low 50s.
These warmer temperatures make it farther east on Sunday with the valleys of the Southern Hills approaching the low 70s with most of the Snake Plain in the mid to upper 60s. Also on Sunday, a low travels across Canada and weak troughing dips just far enough southward to push our ridge of high pressure farther east. This weak troughing/more zonal flow will open the door for some precipitation on Sunday, though it looks limited to the Central Mountains and Eastern Highlands at this point with only about a 20 percent chance of showers at that. What we will have to watch on Sunday will be wind gusts in the afternoon and evening. At this point, the strongest gusts through the Magic Valley and Snake Plain/Arco Desert areas will be around 30 to 40 mph which is just below Wind Advisory criteria. AMM

LONG TERM
Monday through Saturday.
Shortwave ridge will build through the region Monday into Tuesday which will provide us with dry weather to start the week. However the forecast becomes increasingly unsettled as a split flow system pushes onshore for midweek. This will produce scattered precipitation chances for Wednesday. Another, larger system will fill in the void behind these storms for later week. This should provide better chances for precipitation as we move towards late week. Temperatures are expected to remain mainly seasonable for most of next week. This should keep snow levels for mid to late week fairly high, generally around or above 7000 feet. 13



AVIATION
Expect vfr conditions throughout the day at all TAF locations. Winds look mainly light with typical diurnal switch from downvalley to upvalley at KSUN around 17z. 13



HYDROLOGY
Water levels on the Portneuf river continue to run high, just below moderate flood stage for the Portneuf river in Pocatello. The river forecast for the Portneuf river in Pocatello shows the river running above flood stage for the foreseeable future. At Topaz, levels remain and are forecast to remain very near minor flood stage into next week. McKaughan



PIH WATCHES/WARNINGS/ADVISORIES
None.

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