Sweltering temperatures are moving east this week into the Plains, the Upper Midwest and the Lower Mississippi River Valley, promising triple-digit heat along with a spike in gas-fired cooling demand. The National Weather Service June 13 issued a heat advisory for residents in at least 20 states stretching from New Mexico to the Carolinas. Six states are under an excessive heat warning the agency issued. The heat wave could hit hardest in and around St. Louis, where temperatures are now forecast to top 100 degrees Fahrenheit June 14-15. High temperatures in nearby cities, including Memphis, Louisville, and Indianapolis are expected to reach the upper 90s F. Spot gas prices at key locations across the region were up about 20-30 cents June 13, amid an expected spike in gas demand over the coming days. Cash prices at the benchmark Henry Hub were trading at $8.90/MMBtu, Trunkline Zone 1A was moving […]