DALLAS — Heavy rain could bring a soggy and possibly flooded Halloween weekend to parts of Texas and Oklahoma. A developing low-pressure system east of the Rockies is expected to pull deep moisture north into the Southern Plains. A Moderate Risk of heavy precipitation covers parts of central and eastern Texas into southeastern Oklahoma from October 30 to November 1. A broader Slight Risk stretches across more areas through November 2.
Low Pressure Pulls Moisture North
The low-pressure system is forecast to develop east of the Rocky Mountains late next week. As it strengthens, it will boost southerly winds across Texas and Oklahoma. Those winds will carry warm, humid air north from the Gulf.
That steady stream of moisture could fuel several rounds of rain and storms. The pattern may stay wet from Friday through the weekend. Repeated downpours over the same areas would raise the flood risk.
Moderate Risk Covers Central and Eastern Texas
The Moderate Risk zone covers a wide stretch of central and eastern Texas. That includes Dallas, Fort Worth, Denton, Waco, Austin, San Antonio, and Houston. Areas near Tyler, Palestine, Lufkin, Bryan, and Conroe are also included.
The zone reaches into southeastern Oklahoma near Durant, Ada, and McAlester. Parts of southwest Arkansas near Texarkana and northwest Louisiana near Shreveport are also inside the outlook. Coastal areas near Beaumont, Angleton, and Corpus Christi are on the southern edge.
Over an Inch of Rain in Three Days
Ensemble guidance shows the potential for three-day rainfall totals over one inch. Amounts like that would be unusually heavy for this time of year in many areas. Some spots could end up with much more if storms repeat over the same locations…