Unsettled weather will continue for Houston today, as relatively small-scale, but intense showers and thunderstorms bring widespread rainfall to the area. These are nasty storms to try and forecast because while parts of central and southern Houston have received less than one-quarter an inch of rain during the last 24 hours, some parts of southern Brazoria County have received more than 9 inches.
Today
A flash flood watch remains in effect for central and southern parts of the Houston metro area today through about 4pm, as the heaviest rains are likely to continue to fall between the coast and downtown Houston. The storms are being driven by high moisture content and small features in the atmosphere. Additional rainfall amounts may be as much as 2-3 inches of rain, with higher isolated amounts.

These storms have been pretty unpredictable (certainly there was little expectation of a nine-inch rain bomb just south of Houston on Monday and Monday night), so we’ll have to keep on alert for most of today. While I don’t expect major problems for most of Harris County, you just never know when atmospheric moisture levels get this high (about 1.8 inches of precipitable water) during the spring and summer months in Houston.
(Space City Weather is sponsored this month by The Mole, a Jonathon Price novel.)