Sponsored by the Grand Teton Association's Jenny Lake Rangers Fund
Content contributions made by the Jenny Lake Climbing Rangers

LAKE ICE UNSAFE! - April 24, 2015

BEWARE!  The lake ice on the valley floor is unsafe.  A visitor fell through ice on Leigh Lake a few days ago and rangers in the Colter Bay District are reporting that Jackson Lake is no longer safe for travel.  The outlet area of String Lake is completely open water and Jenny Lake has open water showing along the shoreline and among several interior cracks and pockets.  Please be extra cautious around all valley lakes in the Park!  

Jenny Lake ice looking thin and weak!  - April 24, 2015


An unseasonably warm and dry February and March has left Jackson Hole with a thin and rapidly disappearing snow pack as we head into April.  Snow-free south facing aspects below 8,000' are no longer the exception, but are becoming the rule, as the impact of the sun's increasingly stronger rays becomes greater.  The Teton Park Road between Taggart Lake Trailhead and Signal Mountain has been plowed and is bare and dry, open exclusively to hiker/biker traffic until May 1st.  The valley lakes are still frozen, however, extra caution is warranted now as the ice becomes thinner and more suspect during the spring thaw.  Above 9,000' winter-like conditions prevail and travelers can expect typical, and extensive, snow coverage in the Teton Range for this time of year.

Stay tuned for more spring updates as we get ready for another Teton summer season!  Stay safe!

Teton Park Road - April 9, 2015
Jenny Lake remains frozen, but the low hills behind are almost snow-free! - April 9, 2015
The Teton high country remains very winter-like - April 9, 2015



Winter climbing conditions prevail in the high peaks of the Teton Range. Climbing and backcountry travel will involve access through avalanche prone terrain. In order to have a safe and successful trip, it’s important to have good route finding and avalanche skills while traveling throughout the range. Be diligent when selecting a route, trail, or campsite in canyons or on peaks while remaining flexible to changing your plan or itinerary depending on the conditions. This information will not change until significant warming occurs in late Spring.

Please refer to the Bridger Teton Avalanche Center for recent postings of backcountry avalanche conditions, but be aware that this information only covers areas up to 10500 feet.

Lake Ice conditions:
All of the park lakes, including Jackson Lake, are frozen and will support skiers and snowshoers in most areas. There are still areas of thinner ice throughout Jackson Lake, be sure to monitor the changing ice conditions and change your route depending on the presence of water, slush, or unusual cracking.


November and early December storms have deposited over a meter of snow at 9000',   Skiers have been out in the park to find good turns since the Thanksgiving Day storm dropped 45" of snow (20" of snow with 2.6" of water on Nov. 26th). 

Now it looks like a week of sunny weather is coming to an end as another wet and warm storm slams the coast.  Will this next  storm be adding more snow to this early season snowpack and how will it effect the snow stability? 
Before heading out into the mountains be sure to get a weather forecast mountainweather.com and check the Bridger-Teton Avalanche Center,  jhavalanche.org for the latest avalanche forecast.   

The Jenny Lake Ranger Station is
Backcountry camping permits are required year-round for all overnight trips into the backcountry of Grand Teton National Park. Permits are free and can be obtained year-round at the Craig Thomas Discovery & Visitor Center in Moose and during the summer months at the Colter Bay Visitor Center and Jenny Lake Ranger Station. Detailed information can be found in the links on the right.

All route condition information has been removed from this site for the winter season, however, the HOME PAGE will continue to provide periodic updates on general conditions in the Teton Range throughout the winter.

~The Jenny Lake Climbing Rangers