Saharan Dust Blankets Southeast Texas, Setting Stage for Weekend Thunderstorms and Triple-Digit Heat
A plume of Saharan dust is causing hazy skies and poor air quality across Southeast Texas, with a forecast of weekend storms and a major heat wave to follow.
A significant plume of Saharan dust is drifting across Southeast Texas, leading to hazy skies and diminished air quality but keeping significant weather threats at bay for Friday. However, this brief, dry period is set to give way to scattered thunderstorms this weekend before a powerful high-pressure system ushers in a wave of potentially triple-digit heat early next week.
Weekend Washout: Storms on the Horizon
While Friday will remain mostly dry with only a slight chance for isolated afternoon showers, conditions are expected to change dramatically over the weekend. A surge of moisture moving into the region will clash with the existing atmosphere, significantly increasing the likelihood of widespread rain.
Meteorologists are forecasting heavier downpours and scattered thunderstorms for both Saturday and Sunday, with the potential for storms to arrive in waves. The heaviest and most persistent rainfall is expected to impact areas south and east of Houston, where moisture convergence will be at its strongest. Residents should remain vigilant for the possibility of street flooding during more intense downpours.
Expected Storm Timeline
- Friday: Primarily dry conditions persist across the Houston metro. A few isolated locations, such as along the Katy Freeway, might see a brief shower, but most areas will remain dry.
- Saturday & Sunday: Rain chances spike. Afternoon and evening thunderstorms become more probable, bringing the potential for heavier rainfall across the region.
Air Quality Concerns from African Dust
The immediate concern for the region is the hazy blanket of dust that has settled over the area, a phenomenon especially noticeable along the coast and in Galveston. This plume of dry air is currently suppressing rain chances.
This poor air quality may pose a challenge for individuals with allergies or respiratory conditions. The hot and humid conditions, with “feels like” temperatures already in the mid-to-upper 90s, are compounded by the dusty haze.
Brace for the Heat: Triple-Digit Temperatures Loom
The window for rain will be short-lived. By Monday, a strengthening high-pressure system is forecast to build directly over Texas. This will bring sinking, dry air, effectively shutting down storm development and kicking off a period of intense heat.
Temperatures are expected to climb, approaching triple-digit heat by early next week. The accompanying heat index values, which measure how hot it really feels, are likely to soar even higher. Rain chances will plummet to just 20-30%, a typical range for this time of year but not enough to offer relief from the blazing conditions.
How to Prepare for the Shifting Conditions
With a dynamic weather pattern unfolding, residents are advised to prepare for three distinct phases: hazy heat, stormy conditions, and extreme heat.
- For Friday’s Haze: Stay hydrated and cool. Be aware that the poor air quality from the understanding Saharan dust plumes may irritate respiratory issues.
- For the Weekend Storms: Keep umbrellas and rain gear accessible. Monitor weather updates, especially if traveling or planning outdoor activities, and be watchful for localized flooding.
- For Next Week’s Heat: Plan any strenuous outdoor activities for the early morning or evening. Ensure you know the signs of heat exhaustion and have access to cooling centers if needed. For more information, see our guide on how to stay safe in a heat wave.
