Prepare for Hurricane Season

  • Photo of a hurricane evacuation route sign

    When it comes to hurricanes, Harris County is especially at risk. While some are closer to water than others, all Harris County residents are susceptible and vulnerable to the effects of a hurricane. Hurricane season runs from June 1 to Nov. 30. With this in mind, it is as important as ever to solidify your tropical storm preparedness knowledge. View the resources below to make sure you’re ready.

Quick Links

Know Your Hurricane Risk

  • Keep an eye out for messages from local officials to understand your hurricane risk. Sign up for the Harris County Office of Homeland Security and Emergency Management’s (OHSEM) Ready Harris Alerts or download the FEMA app for text message updates on developing tropical storms. You can also view your local forecast by ZIP code on the National Oceanic and Atmospheric Administration’s (NOAA) National Hurricane Center website and follow @NCH_Atlantic on Twitter.

Emergency Alerts & Updates

Helpful Mobile Apps

Evacuation Zones & Shelters

About Hurricanes & Tropical Storms

      Glossary of Hurricane Terms

      • Term Definition
        Tropical Depression Max sustained winds ≤ 38 mph
        Tropical Storm Sustained winds 39–73 mph
        Hurricane Sustained winds ≥ 74 mph
        Storm Surge Abnormal sea level rise caused by storm
        Tropical Storm / Hurricane Watch Conditions possible within 48 hours
        Tropical Storm / Hurricane Warning Conditions expected within 36 hours
        Eye Calm center of the storm
        Eyewall Area of strongest winds and rain
        Outer Bands Spiral arms that bring rain and tornadoes

      Saffir-Simpson Hurricane Wind Scale

      • Category Wind Speed (mph) Damage Potential Historical Example
        Tropical Depression < 38 Primarily heavy rainfall and minor flooding  
        Tropical Storm 39–73 Strong winds, heavy rainfall, and potential flooding Tropical Storm Allison (2001)
        1 74–95 Minimal: Overall impact less severe than other higher-category storms. It can cause significant issues like power outages, minor structural damage, and fallen trees. Hurricane Beryl (2024)
        2 96–110 Extensive: Risk to life and property. Severe wind damage and flooding, leading to extensive power outages Hurricane Ike (2008)
        3 (Major) 111–129 Devastating: Widespread flooding, structural damage to buildings Hurricane Alicia (1983)
        4 (Major) 130–156 Catastrophic: Severe structural damage and flooding The Great Galveston Storm (1900)
        5 (Major) ≥ 157 Catastrophic: Complete building failures and severe flooding Only four storms that have made landfall in the U.S.: Labor Day Hurricane (1935), Hurricane Camille (1969), Hurricane Andrew (1992), Hurricane Michael (2018)

      Checklists & Planning Tools

      Utilities & City Services

      Know Your Evacuation Zone

      • Hurricane evacuation zones are used to determine the extent of coastal storm surge, or water pushed inland by a tropical system. Learn your evacuation zone to determine whether you will need to evacuate when a hurricane threatens. Don’t travel hundreds of miles, only far enough to avoid hurricane hazards such as flooding and tornadoes. Know your evacuation route but plan an alternate route and place to stay. Visit the Harris County OHSEM website, ReadyHarris.org, and find the Hurricane Evacuation ZIP Zone Map to find your zone and routes by ZIP code.

      Hurricane Evacuation Zones and Routes for Harris County

      What is Storm Surge?

      • Storm surge is one of the deadliest and most destructive impacts of a hurricane. Strong winds from a storm can push seawater onto land, causing rapid flooding—especially in low-lying and coastal areas. Even a few feet of storm surge can threaten lives and damage property. If you're in an evacuation zone, it's crucial to leave when instructed as storm surge can arrive quickly and without warning.

        Know Your Storm Surge Risk

      Assemble Disaster Supplies

      • Gather needed supplies for at least seven to 10 days. Don’t forget your specific needs like meds, powered devices, or pets, and keep cash in your emergency essentials kit.

      Prepare Financially

      • If you don’t have one already, start an emergency savings fund. An emergency fund should generally cover your living expenses for three to six months. Make sure your insurance policies and personal documents like ID are up to date and keep copies in a secure password-protected digital space. Review your policies to see if you have flood insurance, as flooding is the leading cause of damage from tropical storms. Take advantage the Emergency Financial First Aid Kit, a joint publication by Operation Hope and FEMA which provides tips to reduce the financial impact of disasters and aid you in the recovery process. Learn more about flood insurance and tips for financial preparedness to ensure that you’re fully covered if disaster strikes.

      Strengthen Your Home

      • Make sure your home is in good repair and meets local hurricane building codes. Declutter drains and gutters, move all loose outdoor items inside, trim trees of any weak branches. Have the proper materials in place to board up your doors and windows to protect them from flying debris. Know a safe location to move your car during a hurricane, whether it’s your garage or elsewhere. If you stay in your home during a hurricane and are not in a flood-prone area:

        • Fill bathtubs and all available containers with water
        • Turn off utilities, if requested
        • Remain indoors in a closet, bathroom, or hallway on the lower level of your house, away from windows
        • Cover yourself and family members with a mattress or a dining room table to protect yourself from falling debris

      Help Your Neighbors

      • Get to know your neighbors before an emergency strikes and exchange contact information. Check with elderly neighbors, senior adults, or others who may need additional help making a plan to see how you can assist.

      Make an Emergency Plan

      • Once you’ve gathered all pertinent information, write down your hurricane plan, share it with neighbors and family members, and practice it. Be sure to include your pets and how you will get in touch with others when planning. Review Ready Harris’ many resources for local assistance and tips from the NOAA for additional guidance on what to do after a hurricane.

      Help for People Who Need Assistance

      Pet Safety & Evacuation