MADISON, Wis. (AP) — Gov. Scott Walker has declared another propane emergency. Midwestern states have been grappling with a propane shortage spurred by the cold winter, a temporary pipeline closure and heavy propane demand for drying grain last fall. Walker declared an energy emergency in October that lifted hour restrictions on propane delivery drivers. In January he issued another emergency declaration allowing the state to lift road weight limits for propane trucks. That same month the federal government lifted hour restrictions for propane delivery drivers across the Midwest. That declaration expired in mid-March. Walker issued a new executive order on Thursday declaring another energy emergency. The order lifts weight limits and hour restrictions through April 26. The order says propane users are still struggling to fill their tanks as cold weather lingers.