Updates Since Last Briefing: Slightly better confidence on timing and areas belowAdjustments to forecast rainfall totals below
Timing & Area of Concern:
Tonight: Hill Country and Rio GrandeSaturday: Eastern Hill Country, I-35 corridor, and eastwardSaturday Night and Sunday: Coastal Plains
Threats & Impacts:
Rainfall: 1 to 3 inches of rainfall Today through Sunday
Isolated pockets of 6 to 8 inches possible, mainly across the western Hill Country and Rio Grande
Some locations may experience flood waters capable of causing small streams, creeks, canals, and ditches to become swollen and overflow in a few places. Flooding of low water crossings possible. Quick ponding of water and minor flooding possible across urban areas and poor drainage areas.
Overview:
Increasing moisture combined with an upper level storm system and weak cold front will generate periods of showers and thunderstorms capable of locally heavy rain through the weekend. The best chances for showers and storms will be tonight across the Hill Country and Rio Grande. Good chances for rainfall will spread east on Saturday into portions of the eastern Hill Country and along and east of I-35. For Saturday night and Sunday, the cold front and focus for rainfall should move east of the I-35 corridor into the Coastal Plains.
Confidence:
Heavy Rainfall: Moderate
Flash Flooding: Low - Moderate