How does hail form? Understanding the science behind the Valley's weekend storm

HARLINGEN, Texas (ValleyCentral) — How does hail form? NBC Meteorologist Marcelo Rivera Gonzalez explains what needs to happen for it to materialize. To understand how hail develops, Gonzalez points to four key ingredients. The first and most essential is a thunderstorm capable of producing powerful updrafts and downdrafts. These opposing vertical winds inside the storm [...]