Ads
related to: why watery eyes during cold days time change back this fall
Search results
Results From The WOW.Com Content Network
Because the Fall Equinox is not a fixed day, but is rather based on an astronomical prediction, the date can change year to year. But it always occurs between September 21 and September 24.
The alternative word fall for the season traces its origins to old Germanic languages. The exact derivation is unclear, with the Old English fiæll or feallan and the Old Norse fall all being possible candidates. However, these words all have the meaning "to fall from a height" and are clearly derived either from a common root or from each other.
Meteorological fall lasts for 91 days every year, starting on Sept. 1 and lasting through Nov. 30. Meteorological spring is March, April and May. Meteorological summer is June, July and August.
Photoperiod is the change of day length around the seasons. The rotation of the earth around its axis produces 24 hour changes in light (day) and dark (night) cycles on earth. The length of the light and dark in each phase varies across the seasons due to the tilt of the earth around its axis.
The temperature could top out around 90 degrees in New York City and Philadelphia during the first week or two of September, slightly later than the historical average for the latest 90-degree day.
Summer is the time of the second rainfall maximum during the year across Georgia, and the time of the main rainfall maximum in Florida. [ 46 ] [ 49 ] During the late summer and fall, tropical cyclones move into the region from the Atlantic and Gulf of Mexico, supplying portions of the area with one-quarter of their annual rainfall, on average.
A warm period during fall will also lower the intensity of autumn colors, the U.S. Forest Service said. The latest forecast from the Climate Prediction Center shows that a warmer-than-average fall ...
The time of day at which people are shown a light source that produces visual discomfort is not perceived evenly. As the day progress, people tend to become more tolerant to the same levels of discomfort glare (i.e., people are more sensitive to discomfort glare in the morning compared to later in the day.)