We’re continuing to track a very intense band of rainfall just north and east of Houston, which has been producing rainfall rates of 2 to 4 inches per hour. The National Weather Service has declared a Flash Flood Emergency until 11:15 am for Southeast Montgomery County, Northeast Harris County, and Liberty County. This is enough to quickly flood streets and back water up into yards (and over a long enough period of time, homes). This band is now slowly sagging into the Houston metro area, as seen on the radar image below.
We do not have a ton of confidence in the forecast other than this band should progress through most if not all of Harris County today, potentially bringing 2 to 8 inches of rainfall later this morning and afternoon. We do not know if it will strengthen further (unlikely), remain the same, or (hopefully) weaken as it progresses throughout the day. Needless to say it has the potential to disrupt any activities today, and we are likely to see flash flooding in the metro area as it moves through.
Meanwhile, the greater Beaumont region continues to experience a massive flooding situation as overnight rains devastated the area, and to some extent, are continuing this morning. The city has conducted hundreds of high-water rescues.