HOUSTON – As Tropical Storm Beta neared the Texas coast Monday, the biggest unknown was how much rainfall it could produce in areas that have already seen their share of damaging weather during a busy hurricane season. Rain from Beta was already coming down Monday in the Houston area. Earlier predictions of up to 20 inches (51 centimeters) in some areas were downgraded Monday to up to 15 inches (38 centimeters). Forecasters and officials reassured residents Beta was not expected to be another Hurricane Harvey or Tropical Storm Imelda. Harvey in 2017 dumped more than 50 inches (127 centimeters) of rain on Houston, causing $125 billion in damage in Texas.