San Antonio Climate & Natural Hazards Quiz
San Antonio experiences significant natural hazards including extreme heat, prolonged drought, and flash floods (10 questions).
San Antonio Climate & Natural Hazards Quiz: Quick Study Notes
San Antonio, Texas, is characterized by a humid subtropical climate that brings hot, humid summers and mild winters. However, this climate also exposes the city to significant natural hazards, primarily extreme heat, prolonged drought, and the risk of flash floods, largely influenced by its unique geography and regional weather patterns.
Key Environmental Factors
Key Takeaways
- San Antonio’s climate is classified as humid subtropical (Cfa).
- Summer months (July-August) bring extreme heat and high humidity, compounded by urban heat island effects.
- The city heavily relies on the Edwards Aquifer, making it vulnerable to drought.
- La Niña events are frequently associated with severe drought conditions in the region.
- San Antonio is part of “Flash Flood Alley,” a zone notorious for intense rainfall and rapid flooding.
- The Balcones Escarpment plays a crucial role in concentrating rainfall and increasing flood risk.
- Water conservation measures, such as outdoor watering schedules, are common during droughts.
Frequently Asked Questions
What is the primary climate type in San Antonio?
San Antonio has a humid subtropical climate (Köppen Cfa), characterized by hot, humid summers and generally mild winters.
Why is San Antonio susceptible to flash floods?
San Antonio is located in “Flash Flood Alley” due to its proximity to the Balcones Escarpment, which causes moist air to rise and rapidly drop heavy rain, combined with urban impervious surfaces.
How does drought affect San Antonio’s water supply?
The city relies heavily on the Edwards Aquifer, which is replenished by rainfall. Droughts deplete the aquifer, leading to water use restrictions and concerns for long-term supply.
What is the Urban Heat Island effect and how does it relate to San Antonio?
The Urban Heat Island effect describes higher temperatures in urban areas compared to surrounding rural areas. In San Antonio, this is due to concrete and asphalt absorbing more solar radiation, leading to hotter city temperatures, especially at night.
What is the significance of the Balcones Escarpment regarding San Antonio’s natural hazards?
The Balcones Escarpment is a geological fault line that helps define the “Flash Flood Alley.” It causes lifting and cooling of moist air, leading to very heavy, localized rainfall and rapid runoff, intensifying flood risks.
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