(as of Jan 27,2022 20:35:12 UTC – Details)
From the Publisher
How The Old Farmer’s Almanac Predicts the Weather
The Old Farmer’s Almanac has been issuing weather forecasts since it first began publishing in 1792, back when George Washington was president of the United States! The original methodology came from a formula devised by the Almanac’s founder, Robert B. Thomas, and is based on the idea that weather on Earth is influenced by magnetic storms on the surface of the Sun. Thomas’s original notes about this formula are kept in a locked black box in the Almanac’s office in Dublin, New Hampshire.
Three Scientific Disciplines
Today, while The Old Farmer’s Almanac still uses elements of Thomas’s original formula, its forecasting methodology has been refined and enhanced with state-of-the-art technology and modern scientific calculations. In fact, it employs three scientific disciplines to make its long-range predictions, including solar science (the study of sunspots and other solar activity), climatology (the study of prevailing weather patterns), and meteorology (the study of the atmosphere). The Almanac reviews its previous year’s forecasts for accuracy every year and prints those results in each new edition. Often, these results are very close to their traditional claim of 80 percent accuracy.
The Meaning of “Normal”
A term that you’ll see a lot in weather forecasting (not just in the Almanac’s predictions!) is “normal.” You’re right to wonder what exactly this means! Many of us may think of the weather in very recent history—last month or last year—but averages are based on 30-year periods prepared by government meteorological agencies. These are updated every 10 years and include daily temperature, precipitation, and other weather information from more than 7,000 weather stations!
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Publisher : Old Farmer’s Almanac (August 17, 2021)
Language : English
Paperback : 288 pages
ISBN-10 : 1571988939
ISBN-13 : 978-1571988935
Item Weight : 10.6 ounces
Dimensions : 5.63 x 0.57 x 8.25 inches