MediumFloodCS: 30 · v5

Flood near Norwich

NorfolkUnited KingdomEA FLOOD

Right now

One other detection within 20 km in the last 24 hours, <1 km from here.

Distance and hazards
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One message per event, not per detection. We send a confirmation first, and every message carries a link to stop them. We store the address and the place, nothing else.

Reported by EA FLOOD today.

No stronger detection stands among the 5 recorded within 20 km of this point since 14 August 2026 — 4 others scored the same. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.

What the source measured

EA FLOOD reported: The tidal River Yare from Thorpe St Andrew to Breydon Water

Urban PEI: 342,998 within a heuristic 50 km radius; not unique people.

Nearby, since 14 August 2026

How we know

One source: EA FLOOD. Not yet confirmed by a second, independent source.

Our own score for this event is 30 out of 100.

This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.

Computed under scoring rules v5. Rows carrying other versions were judged by different rules and are not directly comparable.

Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.

This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.

Event data

TypeFlood
SeverityMedium
Calamity Score (ours)30 / 100
Legacy data-support index0.70/1
Coordinates52.6200, 1.3000
Nearest cityNorwich (1 km)
Urban exposure index (PEI)343.0K within 50 km
Impact tiersignificant
Timestamp2026-10-05T16:17:11.000Z
Sourcehttp://environment.data.gov.uk/flood-monitoring/id/floods/054WATBT2
LicenceOpen Government Licence v3.0 · Environment Agency

Physical priority index · v5. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.

Source and revision timeline

Source: ea_flood. Occurrence: 2026-10-05T16:17:11.000Z.

First archived: 2026-05-12T08:56:40.927Z. Material modification: 2026-10-05T16:43:34.943Z.

Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.

  1. 2026-10-05T16:43:34.943Z · model change

    Index 37 → 30; version 1 → 5.

Score breakdown

20
intensity
70
Urban PEI term
0
Scenario weight
10
Recorded reference / batch anomaly

Technical details

SeverityLevel3
FloodCategoryFlood Alert
CountyNorfolk
RiverOrSeaRiver Yare
EaAreaNameEast Anglia
FloodAreaID054WATBT2
IsTidaltrue
TimeRaised2026-10-05T17:17:11
TimeSeverityChanged2026-10-05T17:17:00

Safety information

What to do in a flood

Three things first, then how little water it takes, and what to do before, during and after. From the advice of the US National Weather Service and FEMA.

For this reportFlood · Norwich

  1. In a car, turn around

    Do not drive into a flooded road or around a barrier: the road under the water may be gone. More than half of flood drownings happen in vehicles.

    NWS
  2. Do not walk through the water

    Fifteen centimetres of moving water can knock you down. It can hide open drains and debris, and a fallen power line can make it live.

    NWS · FEMA
  3. If the water rises, go higher

    With a flash flood warning, move to higher ground at once. Never into a closed attic: rising water can trap you there.

    NWS · FEMA

It takes very little moving water

15cmknock an adult down
30cmcarry away most cars
60cmcarry away SUVs and pick-ups

Moving water. Figures from the US National Weather Service, “Turn Around Don’t Drown”. Person, car and water are drawn to the same scale.

Before, during, after. Here it is still “during”.

Before · When heavy rain is forecast

  • Get the official alerts

    On your phone and from your local authorities, so a warning reaches you even at night.

  • Keep supplies ready

    Water, food, medicine, a torch and batteries, in case you must leave fast or services stop.

  • Documents kept dry

    In a waterproof container, with a password-protected digital copy.

  • Valuables up high

    Move what you cannot replace to upper floors, and clear gutters and drains.

Ready.gov (FEMA)

During · While the water is rising

  • If told to leave, leave

    When authorities order an evacuation, go at once.

  • Keep listening

    Phone alerts, weather radio and local authorities.

  • Keep off bridges over fast water

    A current can take a bridge away without warning.

  • Trapped in a car

    If the water is moving fast, stay inside. If it comes into the car, get onto the roof.

  • Trapped in a building

    Go to the highest floor, not a closed attic. Onto the roof only if you must, and make yourself seen.

Ready.gov (FEMA) · National Weather Service

After · When the water goes down

  • Go back when authorities say so

    Until then, drive only in an emergency.

  • Do not touch standing water

    It can carry sewage and debris; a fallen line can make it live.

  • Mind the electricity

    Do not touch wet appliances or stand in water while using them. Switch the power off only if it is safe.

  • Generators outdoors only

    Generators and petrol engines outside, away from windows: their fumes kill indoors.

  • Clean up protected

    Gloves, boots and covering clothes. Children should not help.

Ready.gov (FEMA)

Questions people ask

How much water does it take to sweep a car away?

About 30 centimetres of moving water carries away most cars, and 60 centimetres SUVs and pick-ups. Fifteen are enough to knock an adult over. Source: US National Weather Service.

What is the difference between a flood watch and a flood warning?

A watch means a flood is possible: get ready. A warning means it is happening or about to: act. With a flash flood warning, go to higher ground straight away. Source: US National Weather Service.

Is it safe to walk in floodwater?

No. It can be contaminated, hide debris and open drains, and carry electricity from a fallen line. Source: Ready.gov (FEMA).

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