Warm and unstable conditions set the stage for potentially severe weather this Sunday across the greater Houston area, with the possibility of strong storms, hail, and damaging wind gusts this evening.
Severe thunderstorm watch in effect until 10 PM
A severe thunderstorm watch has been issued across Houston and most of Southeast Texas, effective through 10:00 PM CDT, although it excludes coastal zones like Galveston and Freeport. This alert follows the arrival of another atmospheric disturbance capable of producing scattered thunderstorms, some of which could escalate into severe-level events.
According to the Storm Prediction Center, parts of Southeast Texas are under a Level 1 or Level 2 risk (on a scale of 1 to 5) for severe storms, with the greatest threat north of Houston. Anticipated storm hazards include hail, frequent lightning, and strong wind gusts.
Ozone alert: Air quality remains poor this evening
In addition to the storm threat, ozone concentrations are elevated across the region, prompting an air quality alert through this evening. People with asthma, COPD, or other respiratory conditions are advised to minimize outdoor activity, especially during peak heating hours.
The combination of warm temperatures, high humidity, and light winds is contributing to the buildup of ground-level ozone, particularly across urban corridors and traffic-congested zones in Harris County and surrounding areas.
Hot and humid start to June with heat indices near 100°F (38°C)
Looking ahead, the first week of June brings a return to classic early-summer conditions. Expect daytime highs in the low to mid-90s°F (33–35°C) with heat indices close to 100°F (38°C). Rain chances are expected to diminish early in the week, though isolated afternoon storms remain a possibility, especially inland.
Hydration and heat safety will be increasingly important, especially for those who must work or exercise outdoors. Shade and breaks will be essential through the midday hours.
Atlantic hurricane season officially begins
June 1 marks the start of the 2025 Atlantic Hurricane Season. Although the tropics are currently quiet, Saharan dust is being observed drifting westward across the Atlantic Ocean, contributing to a temporarily suppressed tropical environment.
The NOAA forecast for this season predicts:
13–19 named storms,
6–10 hurricanes,
and 3–5 major hurricanes.
Now is the time for coastal residents to prepare, particularly those living in Galveston, Brazoria, and Matagorda Counties.
On the Pacific side, Tropical Storm Alvin briefly formed but has already weakened into a post-tropical low near Cabo San Lucas.
Stay with your Gulf Coast Weather Authority for the latest updates on storm development and safety alerts across the Houston metro and beyond.
