Late afternoon and early evening (between about 4:30 and 8:30 pm) on Friday July 27th there were some very cool looking cumulus clouds associated with thunderstorms around the Tetons & the Jackson Hole area. Most of these would be classified as Cumulonimbus Mammatus Clouds. That is, they were of “cumulo-form” (tall & puffy)…… They produced … Continue reading Cool Cumulus Clouds →

Downpours associated with thunderstorms that moved over Jackson Hole on Sunday produced about a half an inch of rain in town. That actually put us over the top for July’s precipitation and we are now above normal for the month, with another week or so to go. Normal precipitation in town in July is 1.05 … Continue reading Thunderstorms Add Needed Water →

A large thunderstorm cell developed over Southeastern Idaho late Wednesday morning (July 11, 2012) and drifted slowly east over Northwestern Wyoming at around noontime. This thunderstorm cell grew to roughly the size of Teton County,WY and produced a fair amount of lightning as it moved overhead. The images below are from the height of that … Continue reading July 11, 2012 Thunderstorm Summary →

To no one’s surprise, June 2012 was warm & dry. It was not the hottest June ever by any means, but it was certainly one of the driest on record. I will review temperatures first and then the precipitation, or lack thereof! Temperatures The average high temperature in the Town of Jackson during June 2012 … Continue reading June 2012 Weather Review →

June is shaping up much like it did back in the Summer of 1988, with hot, dry, and windy weather rapidly escalating the fire danger. Big, rapidly growing fires this season already in Colorado, Utah, and Southwestern Wyoming should be all the reminder we need to be extra careful this Fourth of July Week. (See … Continue reading Fire Weather Season →

Back on June 4, 2012 we had wind gusts in Jackson Hole of 51 and 59 mph recorded at the Airport and in town, respectively, at around 4:30 p.m. These gusts were due to a few dry thunderstorm cells that moved up from northern Utah and southwestern Wyoming, traveling from south to north, over Snow … Continue reading Wind in June →

Almost 80 degrees yesterday and likely topping 80 degrees in Jackson today, calling for a double-take on the calendar to make sure it is really only early June. When you consider that the average high temperature in Jackson is in the upper 60’s the first few days of June, upper 70’s or lower 80’s seems … Continue reading May & Early June Running both Hot & Cold →

After a nice warm and dry start to the normally wet and cool month of May, we are back to a cool and showery weather pattern for the Memorial Day Weekend in the Rockies. At least through Sunday, rain or snow showers are to be expected each day here in Jackson Hole, with highs only … Continue reading Summer Weather Outlook →

For the past two weeks, during part of my “Spring Break”, I was involved with teaching avalanche and weather forecasting courses to military meteorologists here in Jackson Hole. I spent last week with the US Air Force’s 10thCombat Weather Squadron, based out of Hurlburt Field in Florida. The week before, I was with the US … Continue reading Avalanche & Weather Forecasting for Military Meteorologists →

Sunday morning’s snow was kind of a cruel April Fools joke, especially after the nice afternoon we had on Saturday, the last day of March! High temperatures on Saturday in Jackson Hole topped out at 63 degrees. The high Sunday afternoon was 43 degrees. Courtesy of a cold front that went through overnight Saturday night. … Continue reading April Weather See-Saw →