Tools
Evacuation maps and routes
Life threat: call 911. A hurricane zip-zone map is not the plan for bayou water in the city.
Home / Tools / Evacuation maps and routes
Official Zip-Zone / Coastal-A-B-C maps are designed for hurricane storm-surge evacuation. Most Houston inland neighborhoods are NOT in surge zones and are often told to shelter in place for hurricanes unless ordered otherwise (H-GAC; Houston OEM). Inland flooding from extreme rainfall, bayou overflow, reservoir releases, or urban drainage failure is different: there is usually no single 'evacuation route' map. Monitor TranStar high water, FWS gages, local alerts, and move to higher ground if water threatens your home. Do not treat the hurricane route map as the plan for a Memorial Day flood or Tax Day flood-type event.
Zip-zone and routes buttons open the H-GAC 2026 maps. TranStar is live high water and closures. Gauges are bayou levels, not a road list.
Harris County evacuation map
Harris County GIS Evacuation Map. Official county page for hurricane evacuation zones.
ArcGIS Experience: Hurricane Evacuation Zones. Interactive zip zones. Cross-check a color against H-GAC and Ready Harris before you treat it as an order.
If the box is blank, open the map links. The county page does not always allow embedding.
Know your zone
Evacuate for a hurricane only if you are in a storm-surge zone and officials order it. Most inland Houston neighborhoods are told to shelter in place unless ordered out. Follow the current order over any map saved on this site.
H-GAC: H-GAC Hurricane Preparedness & Evacuation Planning hub · Houston OEM · Ready Harris
Other official maps
- H-GAC Hurricane Preparedness & Evacuation Planning hub Houston-Galveston Area Council. Know Your Zone; preparedness guides; only evacuate if in storm-surge zone AND ordered. Contact planner Justin Riley CEM 832-681-2548 listed on page for planning questions (not 911).
- NWS Houston/Galveston: 2026 H-GAC Zip-Zones PDF mirror National Weather Service (media hosting H-GAC map). weather.gov hosted copy of zip-zone map.
- Ready Harris (Harris County OHSEM) Harris County Office of Homeland Security & Emergency Management. Alerts, preparedness. Zip Zone Evacuation Map referenced in Ready Harris alerts; mitigation site points to interactive evacuation map for zones/routes.
- Houston OEM: Hurricane / Tropical Storm City of Houston Office of Emergency Management. Evacuation by zip-code zone; only evacuate if in storm surge zone or ordered. Points to H-GAC for detailed map. STEAR via 211. AlertHouston registration.
Live roads and reports
- Houston TranStar: map layers (incl. high water / flood risk)
- Houston TranStar home
- Houston 311: report flooded streets / drainage (City) Houston Public Works directs report-an-issue to 311. 311 or 713-837-0311
Turn Around Don't Drown
TxDOT: Flash flooding is the leading cause of weather-related deaths in Texas. Never walk, swim, or drive through flood waters. Six inches of fast-moving water can sweep a vehicle. Never drive around barriers at low water crossings. Penalties up to $2,000 and/or up to 180 days in jail. Source: TxDOT
Energy Corridor / west Houston underpasses (caution, not a route list)
There is no Energy Corridor evacuation route on this page. Underpasses and low spots on Memorial, Eldridge, and Dairy Ashford, and near Addicks and Barker, flood in heavy rain. That is a hazard list, not a way out. Check TranStar for water on the road and the gauges for the bayous. If water covers the pavement, turn around.
Need evacuation help (STEAR)
State of Texas Emergency Assistance Registry. Register annually for transportation/assistance needs; call 2-1-1 or see Houston OEM hurricane page. Must re-register every year.
Get alerts
Ready Harris: text READY to 281-609-9093 or readyharris.org. Houston: AlertHouston (text ALERTHOUSTON to 888777 per Houston OEM social/guidance). Always follow current official orders over any static map on this site.
Text lines are for alerts. They are not 911.
Maps and orders change. Last checked 2026-09-22. Confirm on the agency site before you leave.