The weakening nor'easter lingering off the Mid-Atlantic coast represents the main driver of precipitation patterns for September 28, with National Weather Service forecasts indicating continued rain chances across coastal New Jersey to eastern Massachusetts and potential for 1-2.5 additional inches in already saturated areas. Tropical moisture from systems including Odalys and Polo is steering showers toward the Desert Southwest and Four Corners region. Model consensus shows variable probabilities elsewhere, such as 50-70% storm chances in parts of the Southeast and Pacific Northwest, while drier conditions prevail in the central and northern Plains. NOAA and local NWS updates on storm track and moisture influx will refine resolution thresholds for specific locations ahead of the 24-hour period.