Tropical Storm Bill officially formed late Monday night, and it is expected to make landfall on the Texas coastline on Tuesday morning.

With maximum sustained winds of 50 miles-an-hour (MPH) as of its inaugural advisory at 11pm EDT Monday, additional minor strengthening is likely before making landfall between Houston and Corpus Christi early on Tuesday morning.

The primary hazard with the system will be flooding. With most locations of coastal Texas already 10-or-more inches above average on rainfall so far in 2015 (and some areas far higher than that), a widespread 5-10″ of rain along many of these same areas could bring deadly flash flooding to the region.

Tropical Storm Warnings were posted from Baffin Bay to High Island, Texas, covering the majority of Texas’ coastline.

Additionally, as the system moves further north, it is likely to bring significant flooding to northern Texas, eastern Oklahoma and potentially Missouri and the Ohio River valley later this week.

Galveston, Texas closed schools on Tuesday, as did several other Texas coastal communities. Voluntary evacuations were issued for low-lying areas of Galveston earlier Monday, as well.

Source: WeatherNation Tropical Storm Bill: Preparation & Voluntary Evacuation Begin  |  Meteorologist Chris Bianchi