Technology and Science · 01 September, 2026 · 3 min read
Invest 97L Threatens Heavy Rain And Flash Flooding From Houston To Beaumont Tuesday
Invest 97L could become Edouard and bring heavy rain to the Upper Texas Coast Tuesday. Some areas may receive more than 6 inches of rainfall.
Whether the key wind threat is emphasised (wind/gusts vs primarily rainfall).
6 of 8 outlets skipped it: explicit flood risk rating and rate-based flash flooding rates.
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ABC News flags 40-50 mph gusts, while Space City Weather downplays impactful winds.
Invest 97L heads toward Texas
A tropical system designated Invest 97L was meandering west toward Texas as of 7 am, with the National Hurricane Center giving it a 70 percent chance of becoming a tropical depression or storm.
“the National Hurricane Center still gives it a 70 percent chance”
The Space City Weather forecast said the primary threat was heavy rain and the potential for flash flooding, with a band of higher rainfall totals “perhaps on the order of 3 to 6 inches” as the system moved inland.S
It said the most likely period for heavy rainfall was from early Tuesday through Tuesday evening, and that in Houston the expectation was “0.5 to 2 inches of rain,” with greater amounts along and east of Interstate 45.
ABC News reported that a developing system along the Gulf Coast may strengthen to Tropical Storm Edouard and make landfall in Texas near the Louisiana border on Tuesday morning, with flooding risk concentrated between Houston and Beaumont.A
ABC News also said towns including Liberty could see more than half a foot of rain on Tuesday alone, as more than 7 million Americans were under a flood watch.A
Warnings expand; winds and rain
The National Hurricane Center designated the disturbance Potential Tropical Cyclone Five as it gradually became better organized, and WWSB said a Tropical Storm Warning was in effect from Port Bolivar, Texas, eastward to the Vermilion/Cameron Parish line in Louisiana.
WWSB warned that flash flooding was likely in parts of the upper Texas coast, east-central Texas and far southwestern Louisiana, and said minor to moderate coastal flooding was also possible along portions of the upper Texas and southwestern Louisiana coasts.
Houston Public Media said the warning did not currently include Houston or Galveston, but it reported that the region was expected to be hit with several inches of rain falling in southeast Texas.
Houston Public Media quoted Brian Kyle, an NWS meteorologist, saying, “There is a possibility it could become a tropical storm before it makes landfall,” and added that NWS predicted rainfall rates exceeding 3-4 inches per hour during the heaviest downpours.
It also reported that Houston had a 9% chance of seeing tropical storm force winds, while Galveston had a 17% chance, and that Port Arthur and Beaumont had 46% and 31% chances, respectively.
Edouard risk and what’s next
Multiple outlets tied the system’s evolution to the Atlantic naming list, with the next name on the Atlantic hurricane list described as Edouard as the disturbance approached the Texas-Louisiana border.
“A Tropical Storm Warning has been issued by the National Hurricane Center”
AccuWeather said a tropical storm warning was issued by the National Hurricane Center at midday on Monday from Port Bolivar, Texas, to the Vermilion/Cameron Parish Line in Louisiana, and it forecast a corridor of heavier rainfall with totals of 2-8 inches around Houston and the upper Texas coast.
AccuWeather also warned that thunderstorms repeatedly tracking over the same communities could produce locally higher amounts, and said the AccuWeather Local StormMax™ was 12 inches from Sunday night through Wednesday.
Eye on the Tropics said if 97L didn’t form in the coming hours, the National Hurricane Center would likely designate it a Potential Tropical Cyclone, a procedural move that would allow issuance of tropical storm watches or warnings ahead of its approach.
Sun Sentinel reported that a tropical storm warning was issued for Potential Tropical Cyclone Five off Louisiana, and said the hurricane center put it at “at least an 80% chance of developing into a short-lived Tropical Storm Edouard.”