(CNN) — Gas stations in the southeastern United States face significant outages Wednesday as the Colonial Pipeline shutdown stretches into a sixth day, sparking panic-buying that is exacerbating the supply crunch.

As of 7 a.m. ET, 24.8% of all gas stations in North Carolina, 15.4% in Georgia and 15% in Virginia are without gasoline, according to GasBuddy, an app that tracks fuel demand, prices and outages. All figures are higher than late Tuesday.

Outages were also reported in South Carolina (13.4%), Florida (4.2%), Maryland (3.5%) and Tennessee (2.8%)

Experts and officials pleaded with Americans not to hoard gasoline in the wake of the ransomware attack on the Colonial Pipeline because overconsumption will only make the situation worse.

Yet US gasoline demand climbed by 14% on Tuesday compared with the week before, according to GasBuddy. At midnight ET on Wednesday, GasBuddy reported that nearly 1,800 gas stations were out of gasoline in Alabama, Georgia, Florida, South Carolina, North Carolina, Maryland and Virginia.

Meanwhile, average prices at the pump climbed above the key psychological milestone of $3 a gallon on Wednesday for the first time in more than six years, according to AAA.

Energy Secretary Jennifer Granholm strongly urged Americans not to hoard gas during a White House press briefing Tuesday. She also called on gas station owners to “act responsibly” and avoid price gouging during the supply crunch.

“The American people can feel assured that this administration is working with the company to get it resumed as soon as possible, Granholm said.

The Colonial Pipeline, which supplies nearly half the gasoline and diesel to the East Coast, set a goal on Monday of “substantially restoring operational service” by the end of the week.

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