Whenever we have thunderstorms that are not caused strictly by afternoon heating,  there is usually another root cause. Most commonly, thunderstorms that form overnight or in the early morning hours in the Rockies are a result of a low pressure center or cold front passing overhead, or monsoon moisture. This morning, Tuesday July 17th, 2018, … Continue reading Early Morning Thunderstorms →

In this week’s post I will talk a little bit about how to prepare yourself each day to avoid being surprised by thunderstorms. And if for some reason you do get caught out during a thunderstorm, some tips on what to do. Weather Check Your first order of business each day, should be to check … Continue reading Safety Check for Thunderstorms →

Thunderstorms around the Jackson Hole area the last two days are a result of warm and moist air coming up from the Desert Southwest Monsoon that is now underway. A “monsoon” is simply a seasonal wind flow pattern, in this case, one that occurs each summer, primarily in July & August, and extends from the interior … Continue reading Monsoon Flow brings random Thunderstorms →

Happy Fourth of July…. get outside and celebrate America’s Birthday! A weak upper level disturbance moves by to the north of Jackson Hole this afternoon and evening, bringing a little bit of mid-level moisture and unstable air over Northwest Wyoming. Expect some cumulus cloud build-up and some scattered thunderstorm activity around the Yellowstone & Teton … Continue reading Fourth of July Weather →

The Summer Season officially began at 4:07 am MDT Thursday June 21st. Up to this point, June of 2018 in Jackson Hole has had its ups and downs. The first week or two of the month it was warm and dry, reaching our first 80-degree day on June 9th. Then, the last several days, going … Continue reading Summer Solstice June 21st →

Low-pressure moves inland from the Pacific Northwest Coast and settles in over the Great Basin for the Father’s Day Weekend. More clouds and scattered showers & Thunderstorms will be generated as moist and relatively unstable air is circulated over the Rockies, Friday thru Monday (June 15 to 18). The flow aloft over western Wyoming and … Continue reading Father’s Day Weekend Update →

Posted: June 13th, 2018 by meteorologist Jim Woodmencey Looks like we will be saying goodbye to the totally sunny days we have had lately. After  a week or more of nearly perfect weather to begin the month of June 2018, we can expect some changes at the end of this week and through the Father’s … Continue reading Change in the Weather →

Posted: June 5th, 2018 by meteorologist Jim Woodmencey As some of you may have noticed, I have changed my forecast format on the JH Forecast page. After 25-years of doing my own forecast from scratch, starting at 4:00 a.m. each weekday morning, I have decided to take some of the pressure off, so to speak. … Continue reading New JH Forecast Format →

It looks like the Month of May will finish out with showers, thru Friday June 1st. Then, a Ridge of High pressure builds over the Rockies for dry weather and warmer temps this weekend. That Ridge looks like it sticks around into the middle of next week, with high temps in Jackson reaching back up … Continue reading Better Weather Heading into June →

Posted: Monday May 28th, 2018 by meteorologist Jim Woodmencey Low-Pressure over Utah is still in place this morning and is circulating moisture & unstable air around the periphery of this Low. Low is present at the surface,  shown as the red “L” on Sat photo, and the big round “ball” (a closed Low) on the … Continue reading Memorial Day Weather →