The G/WX™ forecasting model has its roots in the early 1970s, when founder Peter Lev was an avalanche forecaster for the U.S. Forest Service (USFS) in Alta, Utah. During Christmas week in 1973 an unusually severe storm shut Alta down, causing extreme chaos over the holiday and causing considerable property damage. The weather warning from the National Weather Service in Salt Lake City was accurate but late in coming. With inspiration provided by lead USFS forecaster Binx Sandahl, Lev began exploring ideas that looked at the weather differently than the National Weather Service.
In the mid-1980s, Lev and his friend Peter Hutter launched the long-range G/WX weather forecasting project. Hutter created the map-making program which is still in use today, and Lev has continued to test and refine the model. The 1988 Mid-West drought gave them the opportunity to show what the system could do: their forecast indicated that the drought would end on or about July 15, and it did. Central Soya of Fort Wayne, IN (the largest soybean processor) used this information to turn a considerable profit, despite the incorrect predictions of their official weather forecasters on staff. During the decades since, clients have included futures traders, Hollywood moviemakers, and ski areas.
Peter Carse joined the G/WX team as the head map maker in 2018, having known Lev from their days at Exum Mountain Guides, where watching the weather was necessary for the safety and survival of themselves and their clients. Lev appreciated Carse’s keen observations and often creative approaches to weather forecasting challenges, and later asked Carse to join the G/WX team. Due to other business demands Hutter left the weather project several years ago, but he and Lev are still in touch. The G/WX team is rounded out by fellow Exum staff member Kim Geil as business manager.
G/WX has painstakingly maintained the records required for the long-range forecasts, and continues to fine-tune the details of the model and improve the accuracy. The accuracy of the maps has achieved a 60-70% success rate, something that is unheard of for this type of forecast. For most forecasts of 10 days or more, a 50% success rate is the average, according to the National Oceanic & Atmospheric Administration.
The G/WX model taps into an aspect of earth climate that has been overlooked by the field of meteorology and that is not bound by time decay, as are typical forecasts. This provides the ability to make long-range forecasts that are unhampered by most time constraints.
The G/WX forecasting team has hard-won experience living and working in the mountains for many years, and are keen observers of the earth’s weather. These decades of experience, combined with an inclination to think ‘outside the box’ have led to the creation of the G/WX model and its long-range weather forecasts. Now you can benefit from their knowledge.