MC / PUBLIC OBJECTS
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EARTHQUAKES IN ROMANIA / EARLY WARNING

Romania's earthquake warning, in 20–30 seconds

In Bucharest, a warning can arrive roughly 20–30 seconds before the S-wave. Use that time for actions decided in advance: a system that shuts down, a valve that closes, a person who protects themselves.

DECIDE IN ADVANCE WHAT THE SECONDS ARE FOR

Follow the signal path

A warning gives you seconds. Building assessment needs records and calculations.

P-waves can be detected before S-waves arrive. That gap can trigger a system configured in advance or leave you time to drop, cover and hold. For a building, check four different things: hazard, EVR, technical assessment and works. An alert does not establish an Rs class.

FACT

Vrancea is an intermediate-depth source. A building's risk class requires a technical assessment for that address.

INTERPRETATION

The window helps most when the next step is chosen and rehearsed before the signal.

UNKNOWN

The exact duration varies with location, depth, network and event. The 20–30-second window is described for Bucharest in certain scenarios; other places may have a different interval.

Synthesis from the sources below

THE CLOCK

Where the seconds between P and S go

An early-warning system detects the P-wave first and tries to send a response before the S-wave reaches the place that matters to you. It does not stop an earthquake or predict when one will happen.

Choose the working window20seconds
  1. 01 rupture the source starts the signal
  2. 02 P detected the network sees the first signal
  3. 03 validation and transmission the message travels to receptors
  4. 04 configured response a pre-decided action can start
  5. 05 S arrives stronger motion arrives
20 seconds

Move the marker to see what kind of action can fit inside it.

What fits inside the window

These thresholds are editorial categories. The sources describe the system and protective behavior; personal timing depends on location, network and event.

Automatic system5 s+

Close or stop equipment configured beforehand

A connected receptor can trigger a technical response. Configuration and testing happen beforehand.

DECIDED BEFOREHAND
Person10 s+

Drop, cover and hold

If you are indoors, get onto your hands and knees, cover your head and neck, and hold on to something solid. Move away from windows; do not run down stairs or outside during shaking.

PROTECTIVE RESPONSE
Address25 s+

Check the building class separately

Hazard, EVR, technical assessment and works answer different questions. During the warning window, protect yourself; check the right record before or after it.

QUESTION FOR LATER
Three thresholds, three response types
WindowWhat can fitKeep in mind
5 san automatic response configured beforehandthe configuration already exists
10 sdrop, cover and hold indoorsstay inside during shaking
20–30 sa window described for Bucharest in certain scenariosduration depends on location and event

THE RESPONSE

When the alert arrives, the first step should be simple

The alert can reach a valve, an industrial process or a person. A system responds according to a tested configuration. A person needs a rule chosen and rehearsed beforehand.

SYSTEM

The receptor executes

A connected system can stop or command equipment. The result depends on configuration, testing and maintenance.

Useful question: what automatic response is connected, and when was it tested?

AT HOME

Drop, cover and hold

If you are indoors, protect your head and neck under a sturdy table or desk or beside an interior wall, away from windows. Stay put during shaking; do not run down stairs.

Useful question: where is the nearest protected place, and what can I hold on to?

ADDRESS

The record answers

For a building, check the right record: hazard, EVR, technical assessment, risk class or works programme.

Useful question: which record am I reading, and what does it tell me?

AFTER THE SIGNAL

When you see "risk", look for the record

In public discussion, "risk" can mean a map, inspection, expert assessment, list or funding programme. Each record answers a different question. A useful order is hazard, EVR, technical assessment, then works.

  1. 01HazardWHAT IT MEASURES
  2. 02EVRWHAT IT MEASURES
  3. 03ExpertiseWHAT IT MEASURES
  4. 04WorksWHAT IT MEASURES

Choose the record you are checking

Change the record to see what it can support and what the next question is.

WHAT IT MEASURES

Where strong motion is more likely

Hazard describes the source, the ground and probability. For your building, look for a public or technical record dedicated to that address.

NEXT QUESTIONWhich public or technical record exists for the building?

Open the institution's page that defines the record.
HazardWhere strong motion is more likely
EVRWhat can be seen quickly from outside
ExpertiseWhat an engineering assessment says about the structure
WorksWhat has been funded and at which stage

BEFORE THE NEXT EARTHQUAKE

Choose the next step before you need it.

A warning can change your first gesture if you choose and rehearse it beforehand. For a building, look for the record that answers your question.

  1. 01

    Indoors, drop, cover and hold. Choose a protected place away from windows.

  2. 02

    If you are outside, move away from buildings, trees, poles and power lines.

  3. 03

    If an automatic response exists, ask who tests it and what it actually stops.

  4. 04

    For a building, separate hazard, EVR, expertise, class and works.

This is an orientation guide. It is not a live alert, a technical assessment or a local evacuation instruction.

SOURCES AND LIMITS

What we know, and what each record can tell you

Each source below is linked to the claim it supports.

Sources checked on 13–14 August 2026 · lists and guidance can change

The 5, 10 and 25-second thresholds show types of response. They do not estimate a personal time window.

What each source supports

FACTINFP

Earthquakes in Romania

The Vrancea source is described as an intermediate-depth zone at roughly 60–200 km, alongside local shallow zones.

Geophysical context and the limits of an alert based on seismic waves.

Open source
HAZARDINFP

Seismic hazard

Romanian hazard combines several seismogenic zones and uses deterministic and probabilistic analyses. It feeds risk assessment; a building class requires the appropriate technical record.

Source, ground, probability and risk; address-level assessment needs a dedicated record.

Open source
FACTINFP / MOBEE

Waiting for the next major earthquake

For an intermediate-depth Vrancea earthquake, the page explains an interval of roughly 20–30 seconds between the warning message and the S-wave arrival in Bucharest.

The window depends on location and event. The page describes it for certain scenarios, including Bucharest.

Open source
SYSTEMINFP

REWS and Receptor SEISM

The operational system can issue warnings after detecting the P-wave, while configured receptors can trigger automatic responses, including gas electrovalves.

Infrastructure and timing context after validation; this explanatory page does not provide a live alert.

Open source
RESPONSEDSU / IGSU

Earthquake survival guidance

The guide explains "drop, cover and hold", moving away from windows, and avoiding stairs or running outside during shaking.

General protective behavior; follow authority instructions in a real event. Building assessment is a separate question.

Open source
RECORDMDLPA

Rapid Visual Assessment

EVR is a simplified exterior observation used for prioritization. An RsI–RsIV class requires a technical assessment.

EVR triage and the engineering record for a risk class answer different questions.

Open source
LAWRomanian legislative portal

Law no. 212/2022

RsI–RsIV describe different levels of susceptibility and damage. Read "risk" together with the type of record being checked.

Legal definitions and public obligations that apply to an individual address.

Open source
CURRENTAMCCRS / Bucharest City Hall

Building lists and the consolidation programme

Public lists and PNCCRS projects show stages and funding. They answer an administrative question, different from hazard or an Rs class.

Public pages checked on 13–14 August 2026; values and stages can change.

Open source

What still needs a separate check

  • MOBEE describes 20–30 seconds for certain Vrancea events and for Bucharest. Other places and events may have a different interval.
  • Warning starts after the signal is detected; it does not anticipate when the earthquake will happen or establish a building's class.
  • An example of an automatic response does not mean every home has a receptor or a connected gas valve.
  • Public lists of buildings, projects and stages can change; check the institution's page before making a decision.
  • Protective advice is general. In a real event, follow the authorities and emergency services.

When to check again: check the REWS documentation, protection guidance, and risk and consolidation lists again when they are updated.