Heavy rain is forecast today. Today will be the most convectively active day of the forecast period with scattered to numerous showers and thunderstorms expected. Widespread rainfall amounts range from about a half inch to 1.5 inches (isolated higher). However, local high-resolution models suggest a 12-hr worst case scenario of 3-4+ inches this afternoon and about 2-5+ inches during the evening mainly north of the FL state line (isolated 6-8 inches appears possible). The probability of 3 inches ranges from about 25-50% - highest around the I-75 corridor and Wiregrass Region. The High-Resolution Ensemble Forecast (HREF) paints high probabilities for greater than 3 inches in SE AL, SW GA, and parts of the Eastern FL Big Bend with lower end probabilities of exceeding 5 inches. This information suggests a fairly high ceiling for heavy rain. Current flash flood guidance shows that about 2-2.5 inches in 1 hr and/or 3-4 inches in 3 hrs would be needed to produce flash flooding.