Heat index values between 100 and 106 degrees will grip the Spring area through the weekend. A storm threat also raises the chance of street flooding in low-lying neighborhoods.
The Weather Prediction Center placed portions of Southeast Texas under a Marginal Risk for excessive rainfall this weekend, according to a CW39 Houston forecast by meteorologist Idolina Peralez. Deep tropical moisture could fuel heavy downpours even though most storms are expected to move through quickly.
"Localized street flooding and ponding on roadways will be possible where the heaviest rain falls, particularly in low-lying and poor-drainage areas," Peralez said.
Spring sits north of Interstate 10, where the forecast calls for lower storm coverage than areas closer to the coast. Rain chances still range from 30% to 50% each day through at least Tuesday, Sept. 15, and any storm that does develop could produce localized flooding and ponding on roadways.
Day-by-day outlook
Afternoon highs will hover in the low to mid-90s all week. Combined with humidity, heat index values will push past 100 degrees each afternoon through the weekend.
- Thursday, Sept. 10: 40% rain chance. High 92, low 78.
- Friday, Sept. 11: 30% rain chance. High 93, low 78.
- Saturday, Sept. 12: 40% rain chance. High 93, low 77.
- Sunday, Sept. 13: 40% rain chance. High 92, low 78. Marginal Risk for excessive rainfall.
- Monday, Sept. 14: 30% rain chance. High 92, low 77.
- Tuesday, Sept. 15: 30% rain chance. High 92, low 78.
What residents should do
The Harris County Office of Homeland Security & Emergency Management (OHSEM) urges residents to never drive through flooded roadways. During a Sept. 3 flood event, the agency and the National Weather Service Houston issued multiple advisories for Harris County, warning drivers to use extreme caution.
Residents can sign up for emergency alerts through the ReadyHarris system and check live road conditions on the Houston TranStar traffic map. The ReadyHarris website also lists Harris County Public Health summer health resources for residents dealing with extreme heat.
No relief is coming soon. The National Hurricane Center is not forecasting tropical development in the Atlantic over the next seven days, but the daily pattern of afternoon storms and triple-digit heat indices is expected to hold through at least mid-September.
