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 Harris County is not under a Flood Watch, Houston will still receive waves of moderate to heavy rain with drizzly weather in between. Flood Watch remains in effect until 7 PM Friday for Fort Bend,

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.