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. The combination of daily rainfall plus a stormier pattern this weekend could lead to the potential for more widespread street flooding late Saturday, which is why we have an ABC13 Weather Watch for Saturday.

Overnight we'll be watching two storms complexes approaching Southeast Texas, one from the Hill Country, the other from across the border in Mexico. The Hill Country storms should move through in the middle of the night and possibly dissipate before reaching Houston. The other storm complex could bring yet another wet morning drive to parts of Southeast Texas. Temperatures Friday will start off in the upper 60s, then warm into the mid 80s with lots of sunshine and low rain chances in the afternoon.

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. That said, the National Weather Service is prepared to add more counties to the watch once we have more confidence in where the heaviest rains will fall Saturday and Sunday.

Should I cancel my outdoor plans?

Because these jet stream disturbances and storm complex are tricky to time out more than 24 hours in advance, it's wise to stay weather aware as you consider your plans for the holiday weekend ahead. We are not advising anyone to cancel plans, but we strongly recommend folks also have an indoor "plan B" option just in case your original plans 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 upper 60s and low 70s all three days. An upper-low will spin up over Central Texas Saturday, sending a wave of heavy thunderstorms toward Southeast Texas sometime late Saturday and early Sunday. That is why we have a Weather Watch for Saturday due to the potential for street flooding, which could also be a concern for early Sunday too. The good news is we are seeing signs the flood risk will decrease Sunday into Memorial Day, and we have dropped Monday's rain chances down to just 40%.

When will this storm pattern come to an end?

We will have lower rain chances both Memorial Day and Tuesday, but another upper-level storm is expected to swing through with a high chance of rain on Wednesday. After the middle of the week, we should turn hotter and drier for the final weekend of May.

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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