San Antonio to see a chance for storms early on Wednesday

Few storms could be strong to severe in the Hill Country & north of HWY 90

A broken line of storms will approach San Antonio Wednesday morning. While not much rain is expected, some of these storms could be strong or severe. (Copyright 2021 by KSAT - All rights reserved.)

SAN ANTONIO – Our last opportunity at rain ended with most of us seeing less than a tenth of an inch.

This go-round doesn’t appear to bring us a significant increase in rainfall, but our chance for severe weather does increase a bit. Here’s what you need to know:

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  • After morning fog, expect a mostly cloudy Tuesday and an outside chance for a shower or two east of I-35
  • Storms are forecast to develop along a boundary late Tuesday night into early Wednesday morning across the Edwards Plateau and Hill County. As they develop, these storms will have the potential to become strong to severe. Part of the Hill Country and San Antonio lie in a slight risk for severe weather. On a scale of one to five, one being the lowest, the yellow area represents a two.
  • If any storms become severe, they could pose a threat for hail up to the size of quarters and damaging wind gusts.
There is a slight risk for strong/severe storms generally north of HWY 90 early Wednesday morning (Copyright 2021 by KSAT - All rights reserved.)
  • Timing: Storms are forecast to arrive to the Edward Plateau just after midnight Wednesday. A line of showers and storms will be nearing San Antonio between 4 a.m. and 8 a.m. Wednesday.
A broken line of storms is expected to approach the I-35 corridor between 5-8 a.m. Wednesday (Copyright 2021 by KSAT - All rights reserved.)
  • Once the line passes, drier air will filter in, while northwest winds become gusty. Skies will clear on Wednesday.
  • Most places will receive around a tenth of an inch or less, while those east of I-35 could see up to a quarter of an inch.

Fire Danger Wednesday

  • After the brief window for morning storms, it will become windy and dry. Winds will gust from the NW up to 40 mph west of San Antonio.
  • This combinations of dry and windy weather will create HIGH FIRE DANGER, especially west of San Antonio
  • A RED FLAG WARNING will be in effect Wednesday from 10 a.m. to 7 p.m. for several counties in our western viewing area
  • Avoid outdoor burning, as any fires that develop will spread rapidly!
West of San Antonio, fire danger will be very high Wednesday (Copyright 2021 by KSAT - All rights reserved.)

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About the Authors:

Justin Horne is a meteorologist and reporter for KSAT 12 News. When severe weather rolls through, Justin will hop in the KSAT 12 Storm Chaser to safely bring you the latest weather conditions from across South Texas. On top of delivering an accurate forecast, Justin often reports on one of his favorite topics: Texas history.

Sarah Spivey is a San Antonio native who grew up watching KSAT. She has been a proud member of the KSAT Weather Authority Team since 2017. Sarah is a Clark High School and Texas A&M University graduate. She previously worked at KTEN News. When Sarah is not busy forecasting, she enjoys hanging out with her husband and cat, and playing music.