Archive for the ‘Weather Almanac’ Category
The Farmers’ Almanac is using words like “piercing cold,” ”bitterly cold” and “biting cold” to describe the upcoming winter. And if its predictions are righ…
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The Almanac Calendars have been manufactured for 130 years and contains over 4900 bits of information including daily Fishing guides, Planting gardens by the…
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- Real-time Solunar calculations
- Planetary data powered by NASA
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Accept no substitutes! America’s oldest continuously published periodical and best-loved annual is often imitated but never equaled. This is the one, the only, Old Farmer’s Almanac! Recognized for generations by its familiar yellow cover, the Almanac for 2014 promises to be “useful, with a pleasant degree of humor,” fulfilling once again (for the 222nd time) the mission set forth in 1792 by its founder, Robert B. Thomas. In addition to its 80 percent–accurate weather, this year’s sig
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Price:Minnesota Weather Almanac : Second Edition, Completely Updated for the New...
End Date: Thursday May-18-2017 6:40:09 PDT
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Question by Cassie: Old Farmer’s Almanac?
Does the Old Farmer’s Almanac really predict the weather well?
Answer by Freight_Train
By Ed O’Lenic of the National Weather Service
The prediction techniques used by the venerable Farmer’s Almanac have never been published in a scientific journal, so its hard to say whether or not we use any of their techniques. We are open-minded about forecast techniques to the extent that we will consider using any forecast technique which has a known, documented record of useable forecast skill over at least 20 or more years of actual or simulated forecasts. Each of the three techniques we use was required to have such accuracy before they were put into use in our operation.
By “useable”, I mean that, if we are forecasting only two classes of temperature or precipitation (either ABOVE or BELOW) at a certain station, say Nashville, and we have a total of 100 forecasts for that station, the technique must predict the correct sign of temperature or precipitation (either ABOVE or BELOW) at least 57 times, on average.
The techniques we use include one which identifies trends in temperature and precipitation over the last 10 and 15 years, respectively.
The second searches through nearly 5 decades of seasonally averaged observations of U.S. surface temperature, global ocean surface temperature and flow-patterns (alot like jet-stream patterns) looking for relationships that have useable prediction skill.
The third method uses a mathematical model of the ocean and atmosphere which can simulate to a useable degree of accuracy at certain places and times, the real atmosphere-ocean system.
In the October 1981 issue of Weatherwise, pages 212-215, John E. Walsh and David Allen performed a check on the accuracy of 60 monthly forecasts of temperature and precipitation from the Old Farmer’s Almanac at 32 stations in the U.S. They found that 50.7 percent of the monthly temperature forecasts and 51.9 percent of the precipitation forecasts verified with the correct sign. These may be compared with the 50 percent success rate expected by chance.
All of our forecasts, which we update each month near the 15th, are available on our homepage at nic(dot)fb4(dot)noaa(dot)gov The homepage also contains a wealth of other information.
In Adition I would Like to add this Q & A Session from
An Interview with The Old Farmer’s Almanac’s Weather Forecaster, Dr. Richard Head, excerpted from The 1992 Old Farmer’s Almanac.
Dr. Richard Head was the weather forecaster for The Old Farmer’s Almanac for a quarter-century starting in 1970. He had a master of science degree in aeronautics, a master of science in meteorology, and a Ph.D. cum laude (for which he studied the spontaneous condensation of supersaturated vapors) from the California Institute of Technology. He was published many times on the subjects of aerodynamics, plasma propulsion, solar activity, and related areas, and during the Mercury Program of the 1960s, he served as chief scientist at the NASA center in Cambridge, Massachusetts. Dr. Head passed away in January, 2006.
Q. Are your Almanac forecasts today really based on a so-called “secret formula”?
A. The Almanac’s founder, Robert B. Thomas, did develop a formula for forecasting the weather, and I believe that it was refined by several of the editors who followed him. That formula still exists in a black tin box at the Almanac offices in Dublin, New Hampshire. While it’s interesting to read and may have some validity, it’s far too simple and broad to be useful in making our specific temperature and precipitation forecasts today for 16 regions in the United States and five across Canada.
Q. Was this old formula based on woolly bears and that sort of thing?
A. It was based on a variety of factors: old weather lore brought over from Europe and modified to fit the weather in the colonies, the effects of various phases of the Moon, careful weather observations, and the study of various plants and animals that seemed able to foretell the weather. It also involved a complex series of cycles, including those having to do with the number of sunspots on the Sun.
Q. So how does the Almanac make weather forecasts today – or is that still a secret?
A. No, I have no reticence in indicating the major factors that enter into the Almanac forecasts because I would like to encourage others to pursue these subjects. I can say that the first factor is that which is associated with the influence of solar activity on the weather. My research and the research of others have shown it to be significant.
Q. By “solar activity,” do you mean sunspots?
A. The subject of sunspots’ influence on our weather has been both touted and ridiculed for centuries and is still a hotly debated topic. In late 1979 and early 1980, the Nimbus 7 and Solar Maximum Mission satellites, respectively, began measuring the daily mean solar irradiance and showed that the solar constant is not a constant but does vary with activity on the Sun, of which sunspots are one manifestation. So, yes, solar activity includes sunspots.
Q. What, then, do you take into consideration besides sunspots?
A. The visible, ultraviolet, X-ray, and radio wavelength emissions from the Sun, for instance; also the geomagnetic activity, the solar wind, and, yes, the high-speed streams that appear to be associated with coronal holes and open magnetic field lines in conjunction with the eruption of solar flares.
Q. You feel that all this solar activity directly influences our weather?
A. With respect to the weather side of the so-called solar-terrestrial relationship, one of the long-term indicators of the effect of changes in the radiant energy from the Sun on the Earth’s climate is the change in the orbital parameters defining the motion of the Earth about the Sun and the mounting evidence that these changes were the cause of past ice ages.
In the shorter term, in addition to the so-called Little Ice Age during the late 17th and early 18th centuries, when there was little or no sunspot activity for about 70 years, various investigators have found increasing evidence for an approximate 22-year period of rainfall in certain regions and drought in other regions (including the midwestern part of the United States) that appears to be related to a double sunspot cycle or, more specifically, to the 22-year magnetic cycle on the Sun.
Q. Do you take into account anything else besides solar activity?
A. Many other factors influence Earth’s weather – the extent of snow and ice cover; the surface temperature of the oceans and the velocity of their major currents; the type of ground cover and the soil moisture content; the amount and type of cloud cover as it affects the reflection and absorption of the incoming solar radiation and the absorption of the outgoing infrared radiation from the Earth; the effect of major fires or the ejecta from major volcanic eruptions; and the dynamic state of the atmosphere and its composition – including infrared absorbing molecules such as water vapor, carbon dioxide, methane, and oxides of nitrogen.
That’s just naming a few of the things that we take into account. We don’t profess to understand or always incorporate all of these and other factors into our Almanac forecasts. But we are continually striving to improve our methods.
Q. Finally, can you hazard a forecast about what long-range weather predicting will be like when The Old Farmer’s Almanac’s age is doubled? Like in 2192?
A. Well, we’ll have far more detailed coverage of all weather elements around the globe by then – including the various depths of Earth’s atmosphere as well as the oceans. We’ll also know so much more about the radiant energy coming from the Sun. Then add incredibly expanded computer capabilities. Besides orbiting space platforms, there’ll doubtless be weather observatories on the Moon, out of the influences of our atmosphere and magnetosphere. By 2192, I’m sure that we’ll also be able to foretell more accurately major volcanic eruptions, ocean current changes, and so forth – all of which have profound effects on our weather.
Q. So in 200 years we’ll be able to predict weather with 100 percent accuracy?
A. Perhaps. Unless once we assimilate all the data of the next 200 years, it turns out that a certain small percentage of weather phenomena occurs totally at random. If that’s the case – and at this point we’re a long way from knowing enough to know – then the maximum accuracy rate for weather forecasting would be 100 percent less whatever the “at random” percent factor might be, if indeed that factor exists at all.
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Question by Malfin™: Weather…??????????
can some1 give me a good weather site that show how much accumulation of snow you get most websites are immposible to find accumulation on
Answer by Loş†pяophєt Oşcaя françoisє™
I believe the site you want to look at is:
Just type in your zip code, or city and state in the upper left box and scroll down to History and Almanac and type in the month and any day or the day you are looking for. When this page comes up you can get daily weather or weekly, or monthly averages. The precip amounts for each day will be given if any. For a group of days simply add the accumlations.
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