Isolated showers and thunderstorms are expected Friday, according to the National Weather Service, with heavier rainfall in the forecast for Saturday.

Here's how it will play out, according to Houston area meteorologists:

A Fire Weather Warning is in place during the day on Wednesday for Colorado, Wharton, Jackson and Matagorda counties.

Houston's dry streak will end soon. As we wind down one of the city's driest Octobers on record, heavy rainfall is on the way this weekend.

The National Weather Service (NWS) has issued a series of weather alerts for Houston and surrounding counties, urging residents to prepare for heavy rainfall, flash flooding, and the likelihood of severe thunderstorms over the weekend.

A Tornado Watch is in effect for Polk, Chambers, and Liberty Counties until 10 p.m. Other parts of Texas and parts of Louisiana are also under the watch.

The City of Houston’s Office of Emergency Management told KHOU 11 that Houston Public Works crews are staging barricades at 49 flood-prone locations across the city. At Memorial Drive and Waugh Drive, barricades are already in place in case they are needed.

After an unbearably dry weather pattern, Houston is FINALLY going to see some strong rain chances this weekend.

Houston has a brief shot of cooler weather to enjoy Wednesday before a warmer and more humid pattern returns. But could lasting fall weather be near?

Ahead of the system, Houston Public Works will lower the water level of Lake Houston, beginning at noon on Friday. In total, the lake will be lowered by 12 inches, bringing its elevation to 41.4 feet. If you live along Lake Houston, the city wants you to secure your property along the shoreline.