Every flood warning and flood alert in force in England, every US weather warning an insurer watches, and the world's earthquakes, hurricanes and floods, on one map, refreshed every 10 minutes. Then paste your addresses to see which are inside one.
Quick answer
The Environment Agency issues three levels of flood warning in England: a flood alert (flooding is possible, be prepared), a flood warning (flooding is expected, immediate action required) and a severe flood warning (severe flooding, danger to life). The map shows each one's area as the Environment Agency draws it. For the US it shows the National Weather Service's warnings and watches (flood, tornado, severe thunderstorm, hurricane, high wind, winter storm, fire weather), and worldwide the shaking from recent earthquakes, the winds and forecast cones of active hurricanes, and GDACS's flood, wildfire and volcano alerts.
Updated 14 Oct 00:40 UTC. Refreshed every 10 minutes. Tap an outline for the issuer's message and link.
6 flood alerts in force in England.
🌊 Flood alert
The Essex coast from Clacton to and including, St Peters Flat and the Colne and Blackwater estuaries, Essex
Source🌊 Flood alert
The Essex coast from St Peters Flat to and including Shoeburyness and the Crouch and Roach estuaries, Essex, Southend-on-Sea
Source🌊 Flood alert
The Suffolk and Essex coast from Felixstowe to Clacton including Orwell and Stour estuaries, Essex, Suffolk
SourceThe same list as data: /api/tools/live-hazards?region=gb
Step 1 of 2 · about a minute
Or paste one address per line
US or UK addresses, or latitude and longitude for anywhere in the world. Only the address is used for the check.
England: the Environment Agency's flood warnings and alerts, from its flood-monitoring service. US: the National Weather Service's active alerts, keeping the ones that matter for property (marine and beach alerts are left out). Earthquakes: the US Geological Survey's ShakeMap for every earthquake of the past week that shook the ground at least moderately, drawn as the area of each shaking level. Hurricanes: the National Hurricane Center's storms in the Atlantic and the Eastern and Central Pacific, with where their winds are now, where their winds have already been and their 5-day forecast cone. Elsewhere: GDACS, the disaster alert system run by the United Nations and the European Commission, for floods, wildfires, volcanoes and cyclones; its alerts are automatic estimates, so confirm them with the national authority.
A warning is in force now: a flood warning, a tornado warning, a hurricane's winds where they are blowing. A forecast is where something may go, like a hurricane's forecast cone; the storm's winds reach well beyond the cone. A footprint is where something has already hit: the shaking from an earthquake, where a hurricane's winds have passed, the area a flood has covered. Footprints are what claims teams check after an event.
Paste addresses in the UK or the US, or latitude and longitude for anywhere in the world. Each comes back inside a warning or event area, within 5 km of one, or clear, with the warning that touches it, how serious it is and when it ends. The first 25 rows are free to see; a work email checks the rest and gives you the whole list as a CSV. Warnings change by the hour, so a list checked this morning can be different this afternoon.
This is a map of the issuers' warning areas, not a flood risk assessment and not an emergency service. A warning area is drawn around places the issuer expects could be affected; a place near the edge is worth a look either way. In an emergency follow the Environment Agency, your local authority, the National Weather Service or your national authority. For long-term flood risk, use the flood zone checkers instead.
Live data from the issuers, refreshed every 10 minutes. Not a substitute for official warnings: in danger, call 999 (UK) or 911 (US).
Is there a live flood map for England?
Yes: this map shows every flood warning and flood alert the Environment Agency has in force in England, refreshed every 10 minutes, with the Environment Agency's own outline for each.
What is the difference between a flood alert and a flood warning?
A flood alert means flooding is possible, so be prepared. A flood warning means flooding is expected and immediate action is required. A severe flood warning means severe flooding and danger to life.
Which of my properties are in a flood warning right now?
Paste the addresses or postcodes into the checker on this page. Each comes back inside a warning area, within 5 km of one, or clear. The first 25 are free to see; a work email checks the rest.
Does it cover Wales and Scotland?
The flood warnings are the Environment Agency's, which cover England. Natural Resources Wales and SEPA in Scotland run their own warning services. The world layers (earthquakes, storms, GDACS) cover everywhere.
How often does it update?
Every 10 minutes, from the Environment Agency, the National Weather Service, the US Geological Survey, the National Hurricane Center and GDACS.
Can I see where an earthquake shook hardest?
Yes: for every earthquake of the past week that shook the ground at least moderately, the map shows USGS's shaking areas, from moderate to severe. Paste addresses to see the shaking at each.
Can I get this as data?
The list of what is in force is free as JSON at /api/tools/live-hazards. To check your own lists from Claude or another AI assistant, add the InstaMaps connector and use check_live_hazards.
Insurers, brokers and property managers check thousands of locations, and check again as warnings change. The portfolio risk report takes a spreadsheet; from Claude, the InstaMaps connector checks a whole sheet against everything in force, adds up the insured values inside and near, and draws the map.