Star Valley Weather

At 9:54 am MST Friday June 21st summer officially arrives in Star Valley as well as the remainder of the Northern Hemisphere.  However it will be more like an April Fools joke in Star Valley and surrounding areas as temperatures Friday afternoon will be some 15-20 degrees below the normal.  There will also be the potential for some local near freezing temperatures by Saturday morning in some of the colder valley locations of Western Wyoming. The culprit is the forecast…

Read More Read More

Video of the cold sunrise from Star Valley Ranch area viewing northward toward Etna Public Information Statement National Weather Service Riverton WY 859 AM MDT Sun Jun 9 2019 A strong cold front invaded Western and Central Wyoming during this weekend. Besides delivering significant snowfall for this time of year to portions of Far Western Wyoming on Friday night and Saturday, frigid sub freezing temperatures were experienced across much of the area this morning once skies cleared and winds diminished,…

Read More Read More

National Weather Service Riverton WY 0521 PM MDT Sat Jun 08 2019 …Estimated Snowfall Totals for Friday night and Saturday… A late spring storm brought snow across the northwestern mountains of Wyoming, and even a bit to the valley floor in Jackson Hole. Below are preliminary snowfall amounts for Friday night and Saturday. Note: SnoTELS (Snow Telemetry) are remote sensing sites in high mountain watersheds. Snowfall data from SNOTELS are estimated based on snow water equivalent. Location Snowfall Lincoln County……

Read More Read More

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…

Read More Read More

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…

Read More Read More

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…

Read More Read More

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…

Read More Read More

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…

Read More Read More

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….

Read More Read More

  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…

Read More Read More