Houston, TX Warnings, Watches and Advisories

Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Houston.

Use the Radar Maps link provided to understand the trajectory of a storm.

Hydrologic Outlook issued July 18 at 2:51PM CDT by NWS Brownsville TX

ESFBRO The Brownsville Texas National Weather Service Office has implemented Advanced Hydrologic Prediction Service (AHPS) for the Los Olmos Creek basin in Deep South Texas. AHPS enables the National Weather Service to provide long-range probabilistic outlooks. This service is also available on the internet. In the table below...the 90 through 10 percent columns indicate the chance the creek could rise above the listed stage levels in the next 90 days. Example: The Los Olmos Creek near Falfurrias has a flood stage of 11 feet. There is a 50 percent chance the Falfurrias forecast point will rise above 2.4 feet during the next 90 days. Chance of Exceeding Stages at Specific Locations Valid [07/16/2025 - 10/14/2025] Location FS(FT) 90% 80% 70% 60% 50% 40% 30% 20% 10% -------- ----- --- --- --- --- --- --- --- --- --- Los Olmos Creek Falfurrias 11.0 1.8 1.8 1.8 2.0 2.4 2.7 3.2 4.2 4.9 This long-range probabilistic outlook contains numbers that are calculated using multiple scenarios from 50 years of historical climatological and stream flow data. These numbers also take into account current conditions of the creek and soil moisture. By providing the complete range of probabilistic numbers...the level of risk associated with the long-range planning decisions can be determined. Additional supportive data and explanation are available on the internet at: http://water.weather.gov/ahps2/long_range.php?wfo=bro Long range probabilistic outlooks are issued around the third Thursday of every month.

Flood Warning issued July 18 at 1:30PM CDT until July 24 at 7:00AM CDT by NWS Shreveport LA

...The Flood Warning continues for the following rivers in Texas... Angelina River Near Lufkin affecting Angelina and Nacogdoches Counties. For the Angelina River...including Alto, Lufkin...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Angelina River near Lufkin. * WHEN...Until Thursday morning. * IMPACTS...At 161.0 feet, Expect minor flooding with the gravel parking lot flooded and water beginning to overflow the gravel road where it widens into the parking lot. Also expect about a foot of overflow across the left bank of the Angelina River looking downstream. * ADDITIONAL DETAILS... - At 1:00 PM CDT Friday the stage was 161.1 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 1:00 PM CDT Friday was 161.1 feet. - Forecast...The river is expected to rise to a crest of 161.1 feet this evening. It will then fall below flood stage Tuesday evening. - Flood stage is 161.0 feet. - Flood History...No available flood history. - http://www.weather.gov/safety/flood

Heat Advisory issued July 18 at 1:00PM CDT until July 18 at 7:00PM CDT by NWS Shreveport LA

* WHAT...Heat index values of 105 to 108 degrees. * WHERE...Portions of southwest Arkansas, southeast Oklahoma, and northeast Texas. * WHEN...Until 7 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Should showers and thunderstorms develop quickly over Southwest Arkansas this afternoon, this would result in cooler conditions and would result in an early cancellation of the Advisory.

Air Quality Alert issued July 17 at 3:11PM CDT by NWS Fort Worth TX

AQAFWD The Texas Commission on Environmental Quality (TCEQ) has issued an Ozone Action Day for the Dallas-Fort Worth area for Friday, July 18, 2025. Atmospheric conditions are expected to be favorable for producing high levels of ozone air pollution in the Dallas-Fort Worth area on Friday. You can help prevent ozone pollution by sharing a ride, walking, riding a bicycle, taking your lunch to work, avoiding drive-through lanes, conserving energy, and keeping your vehicle properly tuned. For more information on ozone: Ozone: The Facts (www.tceq.texas.gov/goto/ozonefacts) Air North Texas: (www.airnorthtexas.org) EPA Air Now (www.airnow.gov/index.cfm?action.local_state&STATEID=45&TAB=0) Take care of Texas (www.takecareoftexas.org) North Central Texas Council of Governments Air Quality (www.nctcog.org/trans/air/index.asp)