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Detailed Forecast for February 14, 2017

POCATELLO, ID (KIFI/KIDK) – The National Weather Service in Pocatello is warning Eastern Idaho residents, flooding threats will continue throughout the week.

“Dry conditions remain through Wednesday with inversions continuing through tomorrow. Temperatures within the inversion zone will warm well above freezing during the day and drop to just below 32° at night. Wednesday overall will be warm with most locations at/above freezing. Lows within the inversion zone will be slowly warming to at/above freezing through Wednesday. The next storm arrives on Thursday and Thursday night, tapering off on Friday. This begins another period of wet and warmer conditions that lasts until one week from now. This pattern taps into deep moisture from the Pacific, so the potential exists for heavier periods of rain and snow during this time. “

Lowland flooding: Areal flooding will continue where it is currently occurring, although some slow down is possible due to colder temperatures (especially overnight) Main areas of concern for flooding: All or portions of the Eastern Magic Valley, Snake Plain, valleys of the Southern and Eastern Highlands, Big and Little Wood River Valleys, Lost River and Pahsimeroi Valleys. Some ice jam flooding remains possible: Dry conditions through Wednesday: Rain and snow arrives early Thursday and lasts through Thursday night, with lingering light precipitation in the Eastern Highlands on Friday. Snow levels peak Thursday at 5000-6500ft for the Snake Plain/Eastern Magic Valley and 6500-7500ft in the mountains. Snow levels drop by Friday morning to 4500-6000ft (highest along the Wyoming border) Snowfall: 1-3″ for most mountain ranges with 4-9 inches in the central mountains (highest in the western central mountains). Potential for difficult travel on mountain passes and roads. Continued avalanche risk: Pockets of blowing and drifting possible above 6500ft (Winds 20-30mph possible) Timing details differ between the extended model forecasts, but several “waves” of moisture are expected beginning Saturday through Tuesday. Inversion conditions continue through Wednesday, especially overnight HIGHS: High temperatures will be in the mid 30s to low 50s through Tuesday afternoon within the inversion zone (5000-8500 ft) and 38° or cooler outside of this zone. HIGHS: All areas will be in the mid 30s to low 50s as inversions weaken on Thursday. LOWS: ~20° or colder below the inversion, 20-32° within the inversion zone Thursday and beyond will see more consistent and WARMER temperatures Concern for widespread lows at/above freezing outside of the central mountains Friday morning through early next week.

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