Tuesday, June 16, 2026 — Houston woke up in a thick, soupy fog Tuesday, the kind that sticks to your skin and your windshield, as a Flood Watch stayed in effect across the metro through Thursday morning. Readings at the KHOU station showed fog, temperatures near 79°F and reduced visibility, while forecasters warned that repeated heavy downpours could trigger life-threatening flash flooding in low-lying and urban areas.
When The Heaviest Rain Will Fall
Showers and thunderstorms are likely through Tuesday, with the main window for the heaviest cells this morning into the afternoon and more rounds expected into Wednesday. The National Weather Service is calling for 1 to 2 inches of new rain Tuesday for many neighborhoods and says an additional 4 to 10 inches are possible across the region through midweek, with isolated higher totals capable of producing rapid, dangerous flash flooding, according to NWS Houston/Galveston.
What This Means For Your Commute
Fast-moving downpours will make drive times unpredictable and can quickly flood familiar surface streets and low-water crossings. If you have to be on the road, expect longer trips, steer clear of water-covered pavement and keep an eye on traffic alerts and closure lists. For more background and tips on navigating flood-prone routes, see our earlier coverage on days of drenching rains, published June 15.
Coastal Conditions And Tropical Chance
Along the coast, forecasters say a trough may drift into the northwestern Gulf and could reorganize over the water. The National Hurricane Center has raised the system's development odds, and even without a named storm the low would likely boost onshore winds and rainfall on Wednesday. Look for the strongest gusts near Galveston and the bays, roughly 20 to 30 mph, along with rougher seas and a high rip-current risk at Gulf beaches. Mariners and beachgoers should pay close attention to local flags and marine advisories.
Safety Steps
If you live in a flood-prone spot, move vehicles to higher ground, charge phones and have an emergency kit ready. Do not drive through standing water, the rule is still "Turn Around, Don't Drown." Stay tuned to local alerts and Houston TranStar for road conditions and closures as the system moves through, and be ready to postpone nonessential outdoor plans until the pattern eases later in the week.
