The Time of Sunset Changes most rapidly at this time of the year. This is mainly because the sun is quickly swinging south along the ecliptic (its apparent path through the background stars). From San Diego's latitude, the sun is now setting about 75 seconds earlier every day (equivalent to about nine minutes earlier per week), and its setting position along the horizon shifts southward about one half degree per day.

Fall Migrant Birds such as wood warblers can be seen at Cabrillo National Monument and its vicinity on Point Loma, Torrey Pines State Reserve, and other parks and open spaces near the San Diego coast. Cooper’s or marsh hawks and even peregrine falcons may be seen following or pursuing these smaller birds.

The Smoggiest Days Of The Year are most likely to occur during the next several weeks. Persistent temperature inversions (warmer air overlying cool marine air) are frequent at this time of year. These inversions conspire with the mountainous topography of East County to trap locally generated air pollution under a low-lying lid. During the worst episodes, San Diego County’s coastal area is the hapless recipient of additional smog sneaking down from the Los Angeles Basin. This often occurs when a Santa Ana wind condition begins to weaken: L.A. smog blown offshore by a Santa Ana may get pushed back our way when the normal sea breeze returns.

Early Fall Is A Great Time for stargazing, nights are getting longer and temperatures are cooling down. How soon after sunset can you locate the big Summer Triangle? Look for the brightest star high in the Eastern sky, that's Vega, the top and brightest star of the triangle. Altair is lower and to the right of Vega, and the second brightest of the three. Deneb is below and to the left of Vega. Despite the name, the Summer Triangle is partially visible though most of the year. Moving into Fall and Winter it moves up and into the Western sky until January. In the Spring, the triangle is visible in early morning hours in the Eastern sky.
The Time of Sunset Changes most rapidly at this time of the year. This is mainly because the sun is quickly swinging south along the ecliptic (its apparent path through the background stars). From San Diego's latitude, the sun is now setting about 75 seconds earlier every day (equivalent to about nine minutes earlier per week), and its setting position along the horizon shifts southward about one half degree per day.

Fall Migrant Birds such as wood warblers can be seen at Cabrillo National Monument and its vicinity on Point Loma, Torrey Pines State Reserve, and other parks and open spaces near the San Diego coast. Cooper’s or marsh hawks and even peregrine falcons may be seen following or pursuing these smaller birds.

The Smoggiest Days Of The Year are most likely to occur during the next several weeks. Persistent temperature inversions (warmer air overlying cool marine air) are frequent at this time of year. These inversions conspire with the mountainous topography of East County to trap locally generated air pollution under a low-lying lid. During the worst episodes, San Diego County’s coastal area is the hapless recipient of additional smog sneaking down from the Los Angeles Basin. This often occurs when a Santa Ana wind condition begins to weaken: L.A. smog blown offshore by a Santa Ana may get pushed back our way when the normal sea breeze returns.

Early Fall Is A Great Time for stargazing, nights are getting longer and temperatures are cooling down. How soon after sunset can you locate the big Summer Triangle? Look for the brightest star high in the Eastern sky, that's Vega, the top and brightest star of the triangle. Altair is lower and to the right of Vega, and the second brightest of the three. Deneb is below and to the left of Vega. Despite the name, the Summer Triangle is partially visible though most of the year. Moving into Fall and Winter it moves up and into the Western sky until January. In the Spring, the triangle is visible in early morning hours in the Eastern sky.
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