San Antonio is located near 29.5°N 98.5°W. It is about 75 miles to the southwest of its neighboring city, Austin, the state capital. The city is also about 190 miles west of Houston and about 250 miles south of the Dallas/Fort Worth area. According to the United States Census Bureau, in 2000 the city had a total area of — (98.9%) of land and
The primary source of drinking water for the city is the Edwards Aquifer. Impounded in 1962 and 1969, respectively, Victor Braunig Lake and Calaveras Lake were among the first reservoirs in the country built to use recycled treated wastewater for power plant cooling, reducing the amount of groundwater needed for electrical generation.
San Antonio has a transitional humid subtropical climate (Köppen: Cfa). The weather is hot in the summer, comfortably warm or mild winters subject to descending northern cold fronts in the winter with cool to cold nights, and warm and rainy in the spring and fall.
San Antonio receives about a dozen subfreezing nights each year, typically seeing some sort of wintry precipitation approximately once every 2-3 winters (i.e. sleet/freezing rain), but accumulation and snow itself are very uncommon. Winters may pass without any freezing precipitation at all, and up to a decade has passed between snowfalls in the past. According to the National Weather Service, there have been 31 instances of snowfall (a trace or more) in the city in the past 122 years, for an average of about once every four years. Snow was most recently seen on February 4, 2011 when a half an inch of snow coated the city. In 1985, the city received a record snowfall of .
San Antonio and New Braunfels, forty miles to the northeast, are some of the most flood-prone regions in North America. The October 1998 Central Texas floods were one of the costliest floods in United States history, resulting in $750 million in damage and 32 deaths. In 2002, from June 30 to July 7, 35 inches of rain fell in the San Antonio area, resulting in widespread flooding and 12 fatalities.
Instances of tornadoes within the city limits have been reported as recently as October 2011, although they seldom occur. An F2 tornado will land within 50 miles of the city on average once every five years. San Antonio has experienced two F4 tornadoes, one in 1953 and another in 1973. The 1953 tornado resulted in two deaths and 15 injuries.
In San Antonio, July and August tie for the average warmest months, with an average high of . The highest temperature ever to be recorded was on September 5, 2000. The average coolest month is January. The lowest recorded temperature ever was on January 31, 1949. May, June, and October have quite a bit of precipitation. Since recording began in 1871, the average annual precipitation has been, with a maximum of and a minimum of in one year.
Natural vegetation in the San Antonio area (where undisturbed by development) includes oak-cedar woodland, oak grassland savanna, chaparral brush and riparian (stream) woodland.
2202 Roosevelt Ave.
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514 W Commerce St
116 Blue Star Building C
6701 San Jose Drive
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