storm is brewing over Texas this week, and it means gloomy days ahead for the Alamo City. Brace for possible heavy rain, thunderstorms or hail potential as clouds roll.

Most of the forecast this week includes some level of thunderstorm chance, starting on Wednesday, April 7. A 20% to 40% thunderstorm odd looms over San Antonio all week and well into the weekend, and the National Weather Service warns some of these storms may become severe.

“Any rainfall at this point is beneficial, so despite the threat for severe weather, we will take the chance at rainfall when we can,” the National Weather Service San Antonio-Austin office warns.

The national forecaster defines a severe thunderstorm as any weather event that brings hail that’s 1 inch or larger or wind speeds of at least 58 mph. The highest storm odds in San Antonio are Thursday afternoon, at 40%, and Friday afternoon when odds peak at 50%.

However, The Weather Channel says storms are far more likely. The weather predictor says there’s a whopping 70% to 50% chance of thunderstorms Friday through Sunday. And, unfortunately, these gloomy odds linger through the weekend and well into the start of the next workweek.

These stormy days also spell a continued cooling patter for San Antonio, avoiding more 90-degree days through the week. Highs should peak in the low 80s most afternoons and dip into the upper 60s and low 70s each night.