Multi-day stormy weather pattern brings daily risk for street flooding though Memorial Day

HOUSTON, Texas (KTRK) -- A multi-day stormy weather pattern could bring the daily risk for street flooding across Southeast Texas though Memorial Day. We've got an ABC13 Weather Watch for Thursday with the chance for street flooding once again. There's also a growing concern for areas of flash flooding along the coastline Thursday. Then the combination of daily rainfall plus a stormier pattern this weekend could lead to the potential for street flooding this weekend, which is why we have you on Weather Watch Saturday too.

Temperatures this morning are starting in the low 70s as clouds and showers slowly push back into the region. Another round of showers and storms is expected to move in Thursday morning from the west, bringing more rain to portions of SE Texas Thursday around lunchtime. Street flooding is the main concern depending on how much rain falls when and where. The most vulnerable area in southeast Texas is near the coast where 4-8" of rain fell during the rainstorm Tuesday night and Wednesday morning. It's there too where heavy rainfall could pose a risk for flash flooding at times. The morning rain should move out later into the afternoon, leading to a drier evening with temperatures climbing into the low-mid 80s depending on if you receive rain or not.

A Flood Watch is now in effect until 7 a.m. Monday for Matagorda, Brazoria, Galveston, Fort Bend and Wharton counties. Communities here picked up on average 4 to 6 inches of rain Wednesday with some locations receiving upwards of 9 inches. And given that more rain is in the forecast, the risk for flooding is higher for areas within the Flood Watch. Heavy rain from showers and storms Thursday through Sunday could lead to excessive runoff and the flooding of streets, urban and low-lying areas. Pockets of flash flooding also cannot be ruled out depending on where and when the heavy rain falls.

How do rain chances look for the rest of the week?

Multiple jet stream disturbances are expected to bring more rounds of rain Thursday through Memorial Day. At this time we have rain chances at 70% Thursday, and 60% for Friday. Because these jet stream disturbances can be a little tricky to time this far out, adjustments to these rain chances are likely, so it's wise to stay weather aware this week as you finalize your plans for the holiday weekend ahead. While making those plans, also have an indoor "plan B" option just in case you get rained out.

What weather should we prepare for Memorial Day weekend?

Scattered showers and thunderstorms are possible every day, so make sure that if you have outdoor plans you also have a place to run for cover should you cross paths with a heavy thunderstorm. When it is not raining, it will be warm and humid. We have highs in the low-to-mid 80s and lows in the low 70s all three days. There is a chance an upper-low will spin up over Central Texas and stall out for the weekend, and if that happens we will need to raise rain chances even more, and rain totals will go higher. That is why we have a Weather Watch for Saturday due to the potential for street flooding, which could also be a concern for Sunday too.

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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