A flooding threat in Houston begins Thursday with areas near and south of the city bracing for heavy rainfall. When will the worst weather arrive?

While we are, again, tracking a slight risk for the Brazos Valley and Piney Woods areas, and a marginal risk for severe weather for areas around Houston, rain totals in Houston are expected to be light. This is because we are working with a slow and weak front that’s stunting weather dynamics (energy) and a limited amount of moisture.

Unlike rain that comes from a cold front, this round of storms formed along an upper-level area of low pressure. The result is that we won't feel any cooler after the rain ends. Highs are likely to reach the mid 80s both Saturday and Sunday with heat index values that could reach 90.