Risk Academy, a Nexortium programmeRisk Science and MethodsDepartment of Decision, Behaviour and Communication

Narrative and quantitative scenarios, severity, plausibility and reverse stress tests

Scenario analysis and stress testing

A scenario is a coherent, plausible future used to test a plan or an exposure; a stress test asks what severe but plausible conditions do to it.

risksacademy.comrisk-sciencediscipline

Scenario analysis and stress testing, drawn as uncertainty bands: 1 primary courses open, 0 in preparation, 0 approved for authoring and 2 also taught here, across 8 subtopics. Courses: RAS-402 L2 open, RAS-409 L3 also taught here, RAT-227 L2 also taught here.L1L2L3L420
Scenario analysis and stress testing at a glance. Drawn as uncertainty bands.
  • Open, 1
  • In preparation, 0
  • Also taught here, 2
  • Subtopics, 8
Course codes from the curriculum; study levels L1 to L4.
Twin builder and simulatorThe central Apennines: L'Aquila, Amatrice and Norcia4 twin generators, 8 layers, 4 instruments
course open now
1
in preparation
0
subtopics in its scope
8
reference earthquakes, M6.2 to M6.6
3

Twin figures for the central Apennines: L'Aquila, Amatrice and Norcia, counted from its layers at their stated dates.

Twin builder and simulator.

For Scenario analysis and stress testing: the faculty's twin of L'Aquila on the planet map, the globe and in 3D. Pick a generator, switch layers, run the instruments; every layer prints its provider and date.

The central Apennines: L'Aquila, Amatrice and Norcia: a flat plan of the faculty twin. Terrain 24 to 2,805 m; 3 reference earthquakes, M6.2 to M6.6; Earthquakes M4.5 and above, past week (live): live, loads in the twin; USGS ShakeMap intensity contours: live, loads in the twin. Contours every 500 metres from the elevation grid; reference earthquakes as marks.
The central Apennines: L'Aquila, Amatrice and Norcia, Italy. Flat plan of the same data: relief, the three reference epicentres with magnitude and depth, and the numbers below; the sampler's figure shows one precomputed field with its parameters. The 3D twin opens on devices with WebGL once its data and library have been checked.
  • Terrain 24 to 2,805 m
  • 3 reference earthquakes, M6.2 to M6.6
  • Earthquakes M4.5 and above, past week (live): live, loads in the twin
  • USGS ShakeMap intensity contours: live, loads in the twin
Credits and dates per layer are listed under the stage. Relief in the twin is exaggerated ×1.5 for legibility.

Drag to move, right drag or Shift with a drag to turn and tilt, Ctrl with the wheel to zoom. Keyboard: arrows move, Shift with arrows turn and tilt, + and - zoom, 0 resets, V steps through the views, Escape clears.

Flat plan of the same data: relief, the three reference epicentres with magnitude and depth, and the numbers below; the sampler's figure shows one precomputed field with its parameters. The 3D twin opens on devices with WebGL once its data and library have been checked.

The map loads from this site as it nears the view (MapLibre 6.9.1, checked by hash).

The discipline in brief.

The discipline teaches scenario design with narrative and quantitative forms, severity and plausibility, reverse stress testing, climate and systemic stress tests, sensitivity analysis and the governance of scenario work, and exercising scenarios with decision makers, with the Apennine twin's sampler supplying the hazard realisations a scenario set draws from. A graduate can design a scenario set, run a reverse stress test to the point of failure and exercise the result with the people who would decide.

This area covers the design and use of scenarios and stress tests: narrative and quantitative scenarios, severity and plausibility, reverse stress testing, climate and systemic stress tests, sensitivity analysis and the governance of scenario work, including exercising scenarios with decision makers. It is taught in the department of Decision, Behaviour and Communication, Faculty of Risk Science and Methods, through 1 course with it as primary discipline and 2 more that also teach it.

What the discipline covers.

8 subtopics, taught across its courses and labs.

Courses
1 open, 0 in preparation
Levels
L2 Intermediate
Labs
Network lab, Trigger lab, Exposure lab
  • Scenario design
  • Narrative and quantitative scenarios
  • Reverse stress testing
  • Climate scenarios
  • Systemic stress testing
  • Sensitivity analysis
  • Scenario governance
  • Exercising scenarios

What is changing now.

Recent developments in scenario analysis and stress testing, each with its source; sources checked on 16 October 2026. Summaries are short readings of the source; follow the link for the full account.

The faculty hub.

News and research as they are published, per discipline, with the faculty's other tools.

The newest research, preprints, news and humanitarian reports for Scenario analysis and stress testing, each with its source and date, load here. Open the research and news hub

The methods it teaches.

From the Academy's risk taxonomy: the discipline's own entries and those of its primary courses, with how many courses teach each.

Methods and practice

  1. Scenario analysis and stress testing1 course
  2. Uncertainty and confidence1 course

1 open, 0 in preparation.

Courses with this as their primary discipline. Open courses link to the catalogue.

Courses with this primary discipline1 open, 0 in preparation

  1. RAS-402Scenario GrammarOpen for enrolmentSystems, L2 Intermediate, 28.5 hours

How the subject is practised in labs.

LabWhat you do in itCourses using it
Network labBuild dependency graphs, find critical nodes, trace cascades1
Trigger labSet forecast thresholds, pre-agreed actions and messages1
Exposure labOverlay people and assets with hazard footprints1

Courses from other disciplines.

These courses count in their own primary discipline and also teach this one; they do not count towards its achievement as primary courses.

Also taught here2 courses that count in another discipline

  1. RAS-409Decision Making under Deep UncertaintyIn preparationSystems, L3 Advanced, 10 hours (estimate), primary in Uncertainty and decision making
  2. RAT-227Climate Scenario Analysis and DisclosureIn preparationTechnical, L2 Intermediate, 10 hours (estimate), primary in Climate and nature financial risk

What you can earn here.

Pathways that teach it.

Where the subject is worked on.

The two Foundry systems where it is practised.

  • Nexus FoundryDSS systemScenario constructionScenarios room
  • GRIx systemCascade paths a stress test followsCascades room

Nexus Foundry system pages describe what each system and its rooms are designed to do; they are not a service on offer, and studying here gives no access to them.

Terms used on this page.

Scenario analysis and stress testing

Start with an open course.

The catalogue lists each course with its outcomes, labs, hours and level.

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