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Moving west toward the mountainous interior of the state, the climate becomes markedly colder, the number of cloudy days increases, [1] and winter snowfall amounts are greater. Using the January freezing isotherm, the humid subtropical climate ( Cfa ) only exists in parts of Greater Philadelphia and low-lying areas of the lower Susquehanna ...
The reddish color of the Sun when it is observed through a thick atmosphere, as during a sunrise or sunset. This is because long-wavelength (red) light is scattered less than blue light. The red light reaches the observer's eye, whereas the blue light is scattered out of the line of sight. Other colours in the sky, such as glowing skies at dusk ...
The time of actual sunset is defined in astronomy as two minutes before the upper limb of the Sun disappears below the horizon. [1] Near the horizon, atmospheric refraction causes sunlight rays to be distorted to such an extent that geometrically the solar disk is already about one diameter below the horizon when a sunset is observed.
The annual U.S. winter outlook report predicts La Niña weather patterns throughout the country. Here's what it means for Pennsylvania's winter.
The Farmers' Almanac is predicting this winter will be wet and cold for most locations, but Pennsylvania may be in for more of the white, powdery stuff that kids and skiers crave.
The handlers for groundhog Punxsutawney Phil say he's forecasting six more weeks of what already has felt like a brutally long and cold winter. Pennsylvania's famed furry weatherman emerged from ...
Solar ray 1 is the lowest from the Sun – the Sun is set. Solar ray 2 is reflected in the (snow) clouds to the observer. Alpenglow (from German: Alpenglühen, lit. 'Alps glow'; Italian: enrosadira) is an optical phenomenon that appears as a horizontal reddish glow near the horizon opposite to the Sun when the solar disk is just below the horizon.
Parts of Philadelphia International Airport and neighborhoods to the north are within two or three feet above the average high tide on the Delaware River. In downtown Philadelphia, Penn's Landing and the Northeast Corridor railroad tracks at 30th Street Station are currently in the 100-year floodplain. Along the Delaware and Schuylkill rivers ...