An explosion at the Valero oil refinery in Port Arthur, Texas, on Monday led to extensive smoke emissions and the temporary sheltering of nearby residents, according to local officials. Port Arthur Mayor Charlotte M. Moses reported that no injuries were reported, assuring that emergency services were on the scene to tackle the fire. She advised residents on the west side to remain indoors while firefighters worked on containment. The explosion comes during a period of heightened gas prices fueled by uncertainties in global oil supply linked to regional tensions, including conflicts involving Iran. The Valero facility, which employs around 770 people, has a processing capacity of approximately 435,000 barrels of oil daily, producing gasoline, diesel, and jet fuel. Footage shared on social media displays substantial flames and smoke emergent from the site, with residents describing a loud explosion that caused vibrations in their homes. Officials from the Texas Commission on Environmental Quality are on-site to monitor air quality in the vicinity. Residents are encouraged to limit outdoor activities and maintain closed windows and doors until further notice.