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In its second year, distribution tripled to 9,000. [3] The initial cost of the book was six pence (about four cents). [7] To calculate the Almanac ' s weather predictions, Thomas studied solar activity, [8] astronomy cycles and weather patterns and used his research to develop a secret forecasting formula, which is still in use today. [7]
Typical meteorological year (TMY) is a collation of selected weather data for a specific location, listing hourly values of solar radiation and meteorological elements for a one-year period. The values are generated from a data bank much longer than a year in duration, at least 12 years.
Wood dragon 31 January 1976: 17 February 1977: Fire dragon 17 February 1988: 5 February 1989: Earth dragon 5 February 2000: 23 January 2001: Metal dragon 23 January 2012: 9 February 2013: Water dragon 10 February 2024: 28 January 2025: Wood dragon 28 January 2036: 14 February 2037: Fire dragon 14 February 2048: 1 February 2049: Earth dragon 2 ...
July 7, 1997: Tower: August: Highest Temperature: 110 °F (43.3 °C) August 10, 1947 August 1, 1988: Beardsley Montevideo: Lowest Temperature: 21 °F (−6.1 °C) August 28, 1996 August 2, 2002: Tower Kelliher: September: Highest Temperature: 111 °F (43.9 °C) September 11, 1931: Beardsley: Lowest Temperature: 10 °F (−12.2 °C) September 30 ...
Lows sometimes fall to or below 50 °F (10 °C), with an average 3 such occurrences annually, [1] but rarely 40 °F (4 °C); from 1981 to 2010, temperatures reached that level in only eight calendar years. [2] Highs generally reach 70 °F (21 °C) or higher, and fail to do so on only an average of 12 days annually.
The average annual snowfall in the Twin Cities is 45.3 inches (115.1 cm), with an average of 100 days per year with at least 1 inch (2.5 cm) of snow cover. The most snow the Twin Cities has officially seen during one winter was in 1983–1984 with 98.6 inches (250 cm), and the least was in 1930–1931 with 14.2 inches (36.1 cm).
The precise criteria for a cold wave are the rate at which the temperature falls, and the minimum to which it falls. This minimum temperature is dependent on the geographical region and time of year. [1] In the United States, a cold spell is defined as the national average high temperature dropping below 20 °F (−7 °C). [2]
Rusty Pfost, now the head of the Miami National Weather Service Forecast Office, did a study in 1999 reviewing rainfall totals from tropical systems affecting Florida between 1960 and 1998. He found that for tropical cyclones moving at greater than 6 knots, the average storm total was normally in the 5–10 inch (127–254 mm) range.