Mexico’s natural gas system is standing firm amid bitingly cold weather in Texas that brought back memories of the 2021 winter storm that deeply impacted cross-border flows.

On Friday night, Mexico power system operator Cenace declared a state of operational emergency on the national grid “due to the possibility of rationing of natural gas imported from the United States.”

Mexico’s operator of the Sistrangas pipeline system, Cenagas, also issued a notice on its electronic bulletin board, advising clients to stick to their nominations.

Mexico imports of natural gas were slightly lower over the last three days, but still above 5 Bcf/d and not too far off par for this time of year. On Tuesday, Mexico imported 5.546 Bcf from the United States, with South Texas accounting...