Rounds of scattered storms expected through the holiday weekend, risk of street flooding
HOUSTON, Texas (KTRK) -- Multiple rounds of showers and thunderstorms are expected now through Memorial Day, but timing out each round of rain more than 24 hours in advance will remain a challenge in this pattern driven by an active jet stream. That said, it looks like the combination of daily rainfall plus a stormier pattern Saturday could lead to the potential for street flooding this weekend, which is why we have you on Weather Watch Saturday.
A spot shower is possible with a partly to mostly cloudy sky for the rest of your Wednesday with temperatures hovering in the upper 70s or the low 80s. Overnight we'll keep these muggy, humid conditions in place with temperatures falling into the low 70s. Another round of showers and storms is expected to move in Thursday morning around sunrise, bringing more rain to southeast Texas Thursday morning and afternoon. Street flooding is the main concern depending on how much rain falls when and where.
A Flood Watch begins at 7 a.m. Thursday and lasts 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, 60% Friday, 80% Saturday, 70% Sunday, and 60% for Memorial Day. 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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