Star Valley Weather

The unseasonably cold air mass that spread across Western Wyoming overnight deposited several inches of snow in the higher mountains and flurries in Star Valley as well.  Flurries are continuing today across the valley as can be seen in the views from the Afton and Bedford respectively,     Skies will clear early tonight as high pressure moves in resulting in temperatures dropping below freezing by midnight much of Star Valley.  Temperatures will bottom out in the colder valley locations…

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URGENT – IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 337 NWS Storm Prediction Center Norman OK 155 PM MDT Thu Jun 6 2019 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Southeast Idaho Western Central and Northern Utah Western Wyoming * Effective this Thursday afternoon and evening from 155 PM until 1100 PM MDT. * Primary threats include… Scattered damaging wind gusts to 70 mph possible Scattered large hail events to 1.5 inches…

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May 2019 was another wet month with well above normal rainfall across all of Star Valley.  Over the past 3 months the total precipitation has averaged well above normal as shown on the map below:   The one obvious exception was the Big Piney region which has been very dry with less than 1 inch of precipitation so far in 2019. For the month of May 2019 Star Valley and nearby areas again have been wet.  The following map shows…

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High based convection moved northward along the east side of Star Valley this evening.  They displayed the classic downburst characteristics particularly as they moved from the Turnerville/Bedford area northward. The strongest observed wind gusts was just 26 mph at Star Valley Ranch.  Likely localized stronger gusts occurred but the time of day after peak heating lessened stronger winds reaching the surface. The following animated cams were able to track the cloud feature as it moved northward:   West Hills Afton…

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It has been a very wet May across most of Wyoming so far. For Star Valley will use the record from Star Valley Ranch as an example. Through the 25th of the month the Star Valley Ranch station has measured 4.42 inches of precipitation  There has  been measurable precipitation at the station for 13 consecutive days through this Saturday. It has also been unseasonably cool much of the time.  This is illustrated by the fact that there has been at…

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The major change in the storm track and jet stream that has occurred this weekend and ushered in unseasonably cool and damp weather over the western states will likely persist the remainder of May and possibly even into June The following is an animation of the 300 mb forecast pressure and wind fields for the next 7 days.  An unseasonably deep upper trough remains over the western states as a strong upper ridge sets up over the Eastern Pacific ocean….

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  The first of this coming week, Star Valley and surrounding areas will experience beautiful late Spring Weather.  However the models are making a strong case that by the end of the week and into next week a return to an active weather pattern will spread across the Western States and into the Great Plains.   The following is an animated loop of the forecast 300mb  pattern including the jet stream through much of the remainder of May. It can…

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HIGHLIGHTS: …Wyoming April 2019 precipitation was 115 to 120 percent of average… …Current water year precipitation is averaging 110 to 115 percent of normal across Wyoming… …Mountain snowpack across Wyoming is 90 to 100 percent of median… …Near normal to slightly above normal snowmelt streamflow volumes are still expected across several major basins in Wyoming… …Total reservoir capacity across Wyoming continues to be 75 to 80 percent by early May…   SYNOPSIS: April 2019 precipitation totals across Wyoming were 115 to 120 percent of average. Precipitation numbers varied between 160 percent of normal over the Snake and Upper Green River Drainages (west to west central Wyoming)…

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An unseasonably cold upper low pressure system over the Rockies with the center over Western Wyoming has provided a brief setback in the Spring warm up across Star Valley. This morning snow was reported across all of Star Valley and adjacent areas. While the valley floor accumulated just an inch of less, the higher slopes such as Star Valley Ranch and Smoot measured 3 and 2 inches respectively.  Also commuters over Teton Pass around sunrise had to contend with slick…

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About SKYWARN Spotter Training: The National Weather Service relies on trained volunteers to supplement Doppler Radar information when severe storms and tornadoes threaten. These dedicated individuals volunteer their time to learn about and detect severe weather. Their valuable cooperation is important in the warning process. Weather reports from trained spotters are used along with Doppler Radar data to issue warnings of tornadoes, severe thunderstorms, and flash floods. How can you get involved in this great program? Just attend one of our FREE spotter training talks at…

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