Recent National Weather Service and Weather Prediction Center guidance highlights a surge of tropical moisture from the remnants of Hurricane Polo interacting with southward-moving cold fronts, driving elevated probabilities of measurable precipitation across the southern tier on October 1. Moderate to high risks of excessive rainfall (locally 2–4 inches or more) are indicated from South Texas through the Gulf Coast and into the Southeast, consistent with ensemble model consensus favoring above-normal precipitation in these areas during the first week of October. In contrast, high pressure and positive 500-hPa height anomalies support drier conditions across the Northeast, Upper Midwest, Rockies, and West Coast, with near-zero probabilities of rain in many locations. Short-range model runs and updated QPF products released today will refine exact thresholds and boundaries ahead of market resolution.