US National Weather Service Houston-Galveston Texas

Atmospheric conditions are expected to be favorable for producing high levels of ozone pollution in the Houston, Galveston and surrounding areas through Monday evening. These conditions are unhealthy for sensitive groups. Limit outdoor activities for early or late in the day, and limit driving or carpool.

Don't forget to stay weather aware this Memorial Day!

Expect high temperatures in the upper 80s and 90s, and humid conditions throughout the day. There is a chance for isolated to scattered showers and thunderstorms in the afternoon.

Showers and thunderstorms continue to decrease in coverage over the next few hours, though flooding impacts may remain, especially in urban and poor drainage areas.

Additional showers and thunderstorms expected tomorrow. High rainfall rates and saturated soils will lead to another threat of flash flooding across the area, especially eastern areas along the coast.

The Flood Watch has been expanded and extended through Monday evening. The most likely rainfall totals are between 2 - 4 inches, with isolated higher amounts of 5-6 inches possible. Heavy rain may lead to flooding of low-lying areas, rivers/creeks, and roads.

Widespread rainfall of 1-3 inches fell over the last 72 hours, with the highest totals of 6-8 inches along the coast. More rainfall is on the way, leading to a slight risk of excessive rainfall, and the potential for flooding on Saturday and Sunday. Stay weather aware, and turn around don't drown!

NOAA Weather Radio All Hazards (NWR) is a nationwide network of radio stations broadcasting continuous weather information directly from the nearest National Weather Service office. Here is why it is an essential investment for your home:

✅24/7 Direct Alerts: It provides continuous weather information and immediate alerts for watches and warnings directly from your local National Weather Service office.

✅Reliable During Outages: Because they can run on battery, solar, or hand-crank power, they provide a way to stay informed even if the power grid, internet, or cell towers fail.

✅Nighttime Protection: Most radio brands feature a loud tone alert that will wake you up during nighttime threats like tornadoes and flash flooding, giving you crucial seconds to seek shelter.

For more information about NOAA Weather Radio visit: https://www.weather.gov/nwr/

Wireless Emergency Alerts (WEAs) are a critical lifeline during life threatening flooding and flash flooding. Unfortunately, a recent study found that 30 percent of Texans have turned WEAs off.
Don’t be a statistic. Take this moment and:
🛑 STOP what you're doing
📱 CHECK your phone's notification settings
✅ TURN WEAs ON today
It only takes a minute, and it could save your life.
For more information about WEAs visit: weather.gov/wrn/wea

Flash floods can strike in minutes, and relying on just ONE way to get alerts is a risky gamble. Cell networks can drop, phones can lose battery, or you might simply be asleep. Protect yourself and your family with multiple overlapping layers of ways to receive flood/flash flood alerts:

✅ Wireless Emegency Alerts (WEA) enabled on your phone and phone fully charged
✅ NOAA Weather Radio with a battery backup incase of power outages
✅ Local TV & Radio broadcasts
✅ Trusted Weather Apps with push notifications
✅ Contact local Office of Emergency Management to opt-in for local alerting networks
❌ Outdoor sirens are for the outdoors! Don’t rely on them indoors

Scattered afternoon showers and thunderstorms are on tap for today. For this weekend, expect multiple rounds of showers and thunderstorms, some of which could produce heavy downpours and result in flooding in urban areas and areas with poor drainage.

Now let’s discuss what to do in the aftermath of a flood event.

Listen to authorities to stay up to date on road conditions, the safety of drinking water, and the status of electricity outages (if applicable).

There are hidden dangers in the aftermath of floods too! Remnant floodwater can contain debris, toxins, and chemicals. Electrical equipment in the water could result in electrocution. Wait until the all-clear is given before returning to previously flooded areas.

Just because the rain has stopped doesn’t mean that all of the roads will be passable. Avoid driving into floodwaters and remember that it only takes a foot of water to carry away a car. Turn around, don’t drown.

Be sure to check on your neighbors and others in your community following a flood to see if they need any assistance. Check for damage and gas leaks. Do not attempt to move structural supports or large debris.