Flood Watch in effect through Wednesday morning as tropical downpours set to soak Houston

HOUSTON, Texas (KTRK) -- Stay weather aware the next 3 days as we are all under a National Weather Service Flood Watch through 7 a.m. Wednesday. Drivers will need to be extremely careful on the roads as flooding downpours are possible at any time these next few days.

Tropical moisture has arrived, and those moisture levels are set to go even higher Monday and Tuesday as two weather systems converge on Southeast Texas. A low pressure system developing over South Texas will feed that tropical air into a front expected to stall out north of I-10 on Tuesday. This will focus torrential downpours over Southeast Texas that could lead to flash flooding for at least the next 3 days.

Lightning is also a big concern with many outdoor events happening around town, so just remember when thunder roars, go indoors!

Monday will feature multiple rounds of scattered thunderstorms throughout the day, so pay close attention to 13 Alert Radar as you go about your business. These storms are capable of dropping a quick inch or two of rain that could quickly fill up streets with rainwater. Temperatures will range from the upper 70s to the upper 80s dependent upon where it is raining and where it is not.

How much rain could we get over the next few days?

At this time we expect rain totals to average between 3 to 6 inches through Wednesday, and while some will get less than this range, others could easily pick up over 9 inches of rain. That's why we have our ABC13 Weather Watch for Monday, Tuesday, and Wednesday.

When will all of this tropical moisture clear out?

That depends on the track and speed of the low pressure expected to develop within the tropical moisture. The tropical air should be gone by Thursday, but it could occur at some point on Wednesday if the low pressure system speeds up more than currently predicted. Once that moisture clears out, rain will still be possible, but it should be less intense than what the atmosphere will bring our way the next few days.

What are you tracking in the tropics?

The National Hurricane Center is giving the low expected to develop over South Texas a 30% chance of developing into a tropical depression or storm once it moves offshore later this week. The track of that low will determine how much rainfall we get Wednesday and Thursday. For the latest on what's happening in the tropics, head to our Tropical Update page for our daily tropical weather discussion and forecast.

13 ALERT RADAR MAPS:
Southeast Texas
Houston
Harris County
Galveston County
Montgomery/Walker/San Jacinto/Polk/Grimes Counties
Fort Bend/Wharton/Colorado Counties
Brazoria/Matagorda Counties

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