Updated: 3:05 am MST on November 25, 2015
Snow. Snow accumulation of 1 to 3 inches. Highs 20 to 28.
Areas of blowing snow in the evening. Snow in the evening...then a chance of snow after midnight. Colder. Snow accumulation up to 2 inches. Lows 1 below to 9 above zero.
Mostly cloudy. A chance of snow in the morning...then a slight chance of snow in the afternoon. Highs 13 to 23.
Partly cloudy. Colder. Lows 9 below to 1 above zero.
Mostly sunny. Highs 16 to 26.
Partly cloudy. Lows 1 below to 8 above zero.
Partly cloudy. A slight chance of snow. Highs 18 to 26. Lows 1 below to 9 above zero.
Partly sunny with a slight chance of snow. Highs 19 to 26.
Partly cloudy with a slight chance of snow. Lows 2 to 9.
Partly cloudy. Highs 21 to 29. Lows 2 to 12.
... Winter Weather Advisory remains in effect until 11 am MST
* impacts/timing... snow will begin early this morning and persist
into Thursday morning. Combination of snow along with blowing
and drifting snow may create slick driving conditions.
* Snow accumulations... 3 to 6 inches along with blowing and
* Locations... Hailey... Craters of the Moon... Arco and MacKay.
A Winter Weather Advisory for snow and blowing snow means that
visibilities will be limited due to a combination of falling and
blowing snow. Use caution when traveling... especially in open
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Area forecast discussion National Weather Service Pocatello Idaho 213 am MST Wednesday Nov 25 2015 Short term...today through Friday night. WV/infrared imagery showing upper low has shifted southeast and is currently over northwestern Nevada. Significant forcing is causing rain/snow over southwestern Idaho. Models are suggesting a cold front will strengthen as it crosses from Nevada into Utah later this morning with a band of heavy snow directed right at the eastern Magic Valley and south Central Highlands. NAM intensifies precipitation along a band further north along the Montana border late this morning...also suggested by our local WRF model. Expecting snow amounts of 4 to 6 inches across the southern half of the central mountains across to Island Park. Main brunt of system will impact the southern half of our forecast area beginning with Burley and Shoshone early this morning...shifting east across zones 22 and into zone 23...24 and 25 later this afternoon. Accumulations above 6000 feet could see 10 to 14 inches through tomorrow afternoon. Concern is also for strong down-valley winds developing across the snake plain this morning...further complicating things with the potential for blowing snow. Models push cold front eastward throughout the day...but it seems to stall along the Wasatch Range while moisture continues to wrap around the middle-level low through Friday. Models suggest tapering off the precipitation as much of the dynamics shift to the east. Hinsberger Long term...Friday night through Wednesday. Models again having a very difficult time through the extended. Upper low lingers then meanders around the Great Basin before lifting toward the northern plains Sunday. GFS and European model (ecmwf) differ on timing and placement of the low with resulting differences in quantitative precipitation forecast and temperature expectations. GFS further north and slower than the European model (ecmwf) thus warmer and wetter. Solutions further complicated by handling of energy coming into Pacific coast Monday. GFS again further north/faster and much wetter than the European model (ecmwf) with hints at an atmospheric river type event pushing into the coastal states and reaching east Idaho by Wednesday. Opted toward a blend of both solutions through the extended which remains close to previous forecast. Dmh && Aviation...even in the short term there is still quite a bit of uncertainty with the unfolding of this event over east Idaho. Quite a bit of model spread on the start of the precipitation at each of the terminal sites though they are seeming to favor onset shortly after sunrise at kbyi/ksun and a middle-afternoon start for kpih/kida. Temperature profiles close to the surface will be tricky for determining snow/rain for kpih but still favor snow at all terminals through the event. Northerly gradient continues to strengthen through the day so blowing snow remains a possibility especially kida through the afternoon/evening. Overall trend favors conditions lowering through the day to at least MVFR but likely IFR at all sites once the snow does settle in. Do not expect to make significant changes to current terminals other than adjusting for latest timing expectations. Dmh && Pih watches/warnings/advisories... Winter Weather Advisory from 5 am early this morning to 11 am MST Thursday for idz019>021-023>025-031-032. Winter Storm Warning from 5 am early this morning to 11 am MST Thursday for idz017-022. && $$