Heat Resilience Audit
About This Resource
This is a joint publication from RiskComms FZCO and Ripple Research, a non-profit AI-for-Good advisory firm specialising in misinformation tracking and climate communication. RiskComms contributes the five-dimension Heat Resilience Audit, a practitioner framework built from crisis simulation and emergency communication field experience. Ripple Research contributes live intelligence from its 2026 Heatwave Misinformation Tracker, covering the denial narratives circulating before, during, and after extreme heat events.
The two halves are designed to be read together. A communication plan that ignores the information environment it operates in is incomplete. Data intelligence without an operational framework to act on it has nowhere to go. This resource pairs a readiness assessment with a briefing on the adversarial narrative landscape the assessment assumes.
How to use this document. Work through the five audit dimensions in sequence, scoring 0–3 per question. Transfer totals to the Scorecard. The misinformation intelligence in Part Two should specifically inform Questions 1.2 and 4.3.
Why This Audit Exists
Extreme heat ranks among the most dangerous and least managed climate-related threats organisations face today. The World Health Organization estimates heat exposure contributes to roughly 489,000 deaths annually, concentrated mainly in Asia and Europe — and 2024 alone saw an estimated 639 billion lost work hours to extreme heat, equivalent to about one per cent of global GDP. (These figures come from the WHO source cited below; treat them as the organisation’s current published estimate rather than a fixed, unchanging fact.)
What makes heat distinctive from a crisis management standpoint is its systemic character. A heat dome doesn’t simply raise the thermometer. It strains power grids, overwhelms emergency health services, disrupts transport, contaminates food supplies, and halts outdoor labour, all at once, with each failure amplifying the others. No single department can manage that alone.
The Paris at 50°C exercise, run in October 2023 with more than 100 participating organisations, produced 50 recommendations and a sobering finding: the most significant vulnerability wasn’t infrastructure. It was the gap between plans on paper and the people those plans were meant to protect. The UNDRR Extreme Heat Risk Governance Framework, launched at COP30 in November 2025, defines heat governance maturity across five areas — awareness, leadership, response, resources, collaboration — and this audit draws on that structure, on the Paris findings, and on the Universal Adaptive Crisis Communication (UACC) Framework to build a communication-specific lens.
Misinformation context. Climate denial narratives exploit the information vacuum that opens before credible sources can respond, and heatwave search interest hit record highs in 2026 — a communication opportunity and a misinformation risk in equal measure. Part Two covers this in full.
The Scoring System
Each of the 20 questions is scored on a four-point scale, built to distinguish organisations that have a plan from organisations that have tested one.
| Score | Capability Level | What This Means in Practice |
|---|---|---|
| 0 | Initial | No formal capability or plan exists. Response would be entirely ad hoc. |
| 1 | Developing | A basic capability exists but is incomplete, untested, or not integrated with operational response. |
| 2 | Established | A documented capability exists and has been partially tested or exercised. |
| 3 | Advanced | Fully integrated, rigorously tested through simulation, subject to continuous improvement. |
The Scorecard
| Dimension | Max | Your Score |
|---|---|---|
| 1. Polycrisis Risk Intelligence and Scenario Planning | 12 | |
| 2. Governance, Coordination, and Channel Resilience | 12 | |
| 3. Audience Segmentation and Vulnerability Mapping | 12 | |
| 4. Empathetic Authority and Actionable Communication | 12 | |
| 5. Simulation, Testing, and Post-Crisis Recovery | 12 | |
| Total | 60 |
Interpreting Your Score
| Score | Stage | What It Means |
|---|---|---|
| 0–15 | Initial | Highly exposed to cascading communication failures. Foundational protocols are absent or untested. Immediate remedial action required before the next heat season. |
| 16–30 | Developing | Foundational plans exist but contain critical gaps — inter-agency coordination, audience segmentation, operational testing. The plan would likely fail under a sustained heat dome. |
| 31–45 | Established | A credible heat communication plan exists. Priority now is stress-testing through simulation, deepening community capability, and extending the plan into recovery. |
| 46–60 | Advanced | High communication resilience. Maintain through advanced polycrisis scenario planning, continuous improvement cycles, and knowledge-sharing with peer organisations. |
Dimension 1: Polycrisis Risk Intelligence and Scenario Planning
Why This Matters
Most heat action plans are built around temperature thresholds — at what reading do we activate? They rarely ask what happens when the heat dome coincides with a power outage, a transport failure, and a shortage of medical staff. The Paris at 50°C exercise was designed precisely to expose these cascading interdependencies: scenarios involving food spoilage from generator failures, carbon monoxide poisoning from improvised cooling equipment, hospitals unreachable because ambulance crews couldn’t get through. A communication plan not built on polycrisis thinking gets overtaken by events.
| Assessment Question | Score (0–3) | Evidence / Notes |
|---|---|---|
| 1.1 Cascading Failure Scenarios — Does the plan account for simultaneous, interacting failures (power, water, transport, health services) rather than treating heat as an isolated event? | ||
| 1.2 Scientific Grounding — Are scenarios and thresholds based on current regional climate projections, including the possibility of temperatures exceeding historical records? (See Part Two for the denial narratives audiences will encounter on this question.) | ||
| 1.3 Interdependency Mapping — Has the team mapped operational interdependencies with utilities, health services, transport operators, and social care providers? | ||
| 1.4 Escalation Triggers — Are there pre-agreed triggers for escalating communication posture, aligned with operational alert levels, that don’t require ad hoc decisions under pressure? |
Dimension 1 Score: ___ / 12
Dimension 2: Governance, Coordination, and Channel Resilience
Why This Matters
A consistent finding across heat simulations globally: coordination failures, not absent plans, are the primary cause of poor performance. Phoenix, Arizona created a dedicated heat department after a simulation revealed no single authority owned the unified response. Paris found that individual agencies understood their own roles fine — the interdependencies between them had simply never been tested under pressure. The core question for communicators: who has authority to speak, on whose behalf, through which channel, when several agencies are managing different facets of the same crisis simultaneously? And in a severe heat dome, digital networks and power can’t be assumed available at all.
| Assessment Question | Score (0–3) | Evidence / Notes |
|---|---|---|
| 2.1 Designated Communication Authority — Is there a clearly designated lead (the “Hub”) with explicit authority to coordinate messaging across departments and partners, without real-time approval for every decision? | ||
| 2.2 Operational Integration — Is communication formally embedded in the crisis management structure, with a seat at the command table, rather than receiving information downstream after decisions are made? | ||
| 2.3 Expert Spokes — Has the organisation identified and briefed designated subject matter experts who can speak with authority on specific cascading impacts? | ||
| 2.4 Channel Redundancy — Are there documented backup channels, including non-digital options, for extended power or network outages? |
Dimension 2 Score: ___ / 12
Dimension 3: Audience Segmentation and Vulnerability Mapping
Why This Matters
Communicating to “the general public” isn’t a strategy — it’s the absence of one. Extreme heat doesn’t affect everyone equally. Elderly people living alone, those with chronic cardiovascular or renal conditions, outdoor workers, infants, homeless individuals, people in poorly insulated housing — each group carries a categorically different level of risk, and each needs a different message through a different channel at a different point in the event. The Paris simulation’s most significant post-exercise commitment wasn’t new infrastructure. It was opening a Campus of Resilience to build ordinary Parisians’ own capability to protect themselves and their neighbours.
| Assessment Question | Score (0–3) | Evidence / Notes |
|---|---|---|
| 3.1 Vulnerable Group Identification — Has the team specifically mapped groups most vulnerable to extreme heat? | ||
| 3.2 Segmented Message Maps — Are there pre-drafted, tested message maps tailored to each vulnerable group’s specific risks, information needs, and preferred channels — rather than one generic set of heat safety messages? | ||
| 3.3 Cultural and Linguistic Accessibility — Are materials available in the languages spoken by all significant communities in the organisation’s area of responsibility, reviewed for cultural appropriateness? | ||
| 3.4 Active Outreach Protocols — Are there proactive outreach strategies, including community partnerships, for reaching people unlikely to access standard digital or broadcast channels? |
Dimension 3 Score: ___ / 12
Dimension 4: Empathetic Authority and Actionable Communication
Why This Matters
In a crisis, people need more than information — they need to feel the organisation communicating with them understands the seriousness of the situation and is acting in their interest. The UACC Framework calls this empathetic authority: genuine acknowledgement of impact paired with clear, credible, actionable guidance. The ACAC model — Acknowledge & Empathise, Core Action, Actionable Advice, Commit — gives that balance a practical structure.
Speed-to-trust matters just as much. Waiting for complete information before saying anything is a strategic error; early, transparent acknowledgement builds the credibility that sustains confidence through a prolonged event. This is also where misinformation risk peaks — the vacuum before official communication is exactly where denial narratives take hold. Part Two covers the specific arguments in circulation ahead of the 2026 heatwave season.
| Assessment Question | Score (0–3) | Evidence / Notes |
|---|---|---|
| 4.1 ACAC Messaging Structure — Do holding statements, updates, and recovery communications follow Acknowledge & Empathise / Core Action / Actionable Advice / Commit? | ||
| 4.2 Capability-Building Communication — Does the strategy go beyond warnings to actively build community capability (recognising heatstroke, checking on neighbours, locating cooling facilities) so people can act without waiting for instruction? | ||
| 4.3 Speed-to-Trust and Pre-Bunking Protocol — Is there a documented protocol for early, transparent communication, including pre-bunking against predictable denial narratives, to prevent misinformation from filling the vacuum? (See Part Two for the three denial narratives in active circulation.) | ||
| 4.4 Real-Time Feedback Mechanisms — Are there tested mechanisms for gathering real-time feedback during a heat event, including social media and frontline service monitoring, to adjust messaging as concerns emerge? |
Dimension 4 Score: ___ / 12
Dimension 5: Simulation, Testing, and Post-Crisis Recovery
Why This Matters
A heat action plan that has never been tested is not a plan. It’s a hypothesis. Dr Satchit Balsari of Harvard Medical School has observed that many cities produce heat action plans without ever drilling into whether they’re implementable, whether the funding exists, or whether the practical know-how is actually in place. The value of a simulation isn’t confirming the plan works — it’s discovering where it doesn’t.
The most effective exercises are deliberately unpredictable. Ziad Touat, the crisis management consultant who led the Paris simulation, has noted organisations don’t need to spend €200,000 to get this value: five small, targeted exercises teach more than one large, expensive event managed carefully to avoid failure. Recovery is just as neglected. The health effects of a severe heatwave — elevated chronic kidney disease, cardiovascular complications, mental health deterioration — persist for months after temperatures normalise.
| Assessment Question | Score (0–3) | Evidence / Notes |
|---|---|---|
| 5.1 Simulation Currency — Has the plan been tested through a full-scale simulation or structured tabletop exercise within the last 12 months, involving external partners and, where appropriate, community representatives? | ||
| 5.2 Deliberate Stress-Testing — Are exercises designed to expose coordination failures and communication breakdowns (network outages, conflicting information, simultaneous cascading events) rather than simply validating the existing plan? | ||
| 5.3 Recovery Phase Communication — Does the plan include a dedicated module for the post-crisis recovery phase — ongoing health communication, infrastructure repair updates, psychological support? | ||
| 5.4 After-Action Review and Plan Update — Is there a formal, mandatory After-Action Review following every exercise or real-world heat event, with a documented requirement to update the plan within a defined timeframe? |
Dimension 5 Score: ___ / 12
Priority Action Matrix
For each dimension scoring below 6, identify the single highest-priority question and assign a target completion date.
| Dimension | Score | Priority Question (if < 6) | Responsible Lead | Target Date |
|---|---|---|---|---|
| 1. Risk Intelligence | ||||
| 2. Governance & Coordination | ||||
| 3. Audience Segmentation | ||||
| 4. Empathetic Authority | ||||
| 5. Simulation & Recovery |
A Note on Proportionality
This audit is built to apply across organisations of every size and resource level. Not every organisation can stage a €200,000 multi-agency simulation. Every organisation can still conduct a two-hour tabletop exercise testing a single cascading scenario, review its materials to confirm they address specific vulnerable groups rather than a generic audience, establish one named communication lead with clear authority, draft a single ACAC-structured holding statement and test it against a realistic scenario, and develop two or three pre-bunking messages targeting the denial narratives most likely to circulate in its own sector.
The evidence from simulations worldwide points the same direction: incremental, regular testing builds more resilient organisations than infrequent, large-scale exercises. This audit isn’t trying to surface everything missing at once. It’s trying to establish where to start.
Part Two: Heatwave Misinformation Intelligence
Source: Ripple Research — In the Heat of Denial: Decoding Climate Deniers’ Heatwave Arguments (May 2026)
Every heatwave now produces two parallel crises. The physical emergency is visible — rising temperatures, overwhelmed hospitals, people at risk. The information emergency is less visible but equally damaging: a surge in search traffic opens an information vacuum, and denial narratives rush to fill it before credible sources can respond.
Ripple Research’s monitoring across 2023 through 2026 shows heatwave-related search interest at record highs in 2026, exceeding every previous year. Rising attention creates a window — for accurate messaging, and equally for misinformation.
Why this matters for crisis communicators. The misinformation risk in a heatwave isn’t incidental; it’s structural. When temperatures spike, people search urgently for explanations, and that window opens before official communications can catch up. Denial narratives are well-rehearsed, algorithmically amplified, and engineered to exploit specific cognitive vulnerabilities — they move faster than press releases. Preparedness now has to include pre-bunking: not just messaging about the heat itself, but messaging that inoculates audiences against the arguments they’ll meet before, during, and after the event. The goal isn’t winning a debate about climate science. It’s preventing confusion from becoming paralysis, and paralysis from becoming casualties.
The Three Denial Narratives in Circulation
Ripple Research tracks three persistent arguments, each targeting a different cognitive vulnerability, and each circulating harder as 2026 search interest climbs.
Narrative 1 of 3 — Historical Cherry-Picking: “Heatwaves were worse in the past”
This argument selects isolated, well-known historical extremes — the 1934 US Dust Bowl, the 1540 European megadrought, the 1878 global heatwave — to imply modern heat events are unremarkable. It works by exploiting unfamiliarity with climate baselines and the difference between an outlier event and a long-term trend. Dismissing the Dust Bowl isn’t the answer; it was real and it was extreme. The counter is shifting the frame from individual events to trends — a single hot year doesn’t define a century, and the frequency and intensity of extreme heat events has changed substantially over the past hundred years.
| Counter-Guidance | Source Organisation |
|---|---|
| Acknowledge historical heat events, then shift the frame from individual events to trends. Visuals showing frequency and intensity over decades persuade more than temperature figures alone. Inoculate audiences in advance by naming the cherry-picking tactic itself, not just the facts it distorts. | Ripple Research |
Narrative 2 of 3 — Institutional Distrust: “Scientists are manipulating the data”
Notice what this argument doesn’t do: it doesn’t dispute specific data points. Instead it attacks the credibility of the scientific process itself, alleging tampering at NASA, NOAA, and other research bodies to weaponise existing institutional distrust. The counter isn’t more data — it’s verification architecture. Temperature records are cross-verified independently across dozens of global systems; no single institution controls them. Making that redundancy visible and comprehensible to non-specialist audiences is the actual communication task.
| Counter-Guidance | Source Organisation |
|---|---|
| Don’t defend institutions — demonstrate redundancy. Explain that the same warming signal appears in satellite data, ocean heat measurements, glacier retreat, and independent national records. The conspiracy argument fails on its own terms: it would require coordinated deception across thousands of independent scientists in dozens of countries. | Ripple Research |
Narrative 3 of 3 — Normalisation: “This is normal weather”
Of the three, this one does the most operational damage. By conflating local weather with global climate patterns, it encourages passive acceptance rather than protective action. It doesn’t just undermine climate communication — it undermines emergency response. When people believe extreme heat is normal, they don’t seek cooling facilities, don’t check on elderly neighbours, don’t take physiological warning signs seriously.
| Counter-Guidance | Source Organisation |
|---|---|
| The counter is behavioural, not scientific. Don’t argue about whether the heat is unprecedented — communicate what people should do regardless. Lead with action: stay hydrated, seek shade, check on vulnerable neighbours. Reserve climate framing for slower-burn educational content; in the acute phase, the priority is protective action, not scientific literacy. | Ripple Research |
Implications for Heat Resilience Communication
Ripple Research draws three operational conclusions from its 2026 monitoring data, each bearing directly on the audit dimensions above.
| # | Implication | Operational Guidance |
|---|---|---|
| 1 | Pre-bunk before the heatwave peaks | Deploy inoculation messaging ahead of forecast heat events. Audiences primed with accurate framing beforehand resist misinformation significantly better. Align pre-bunking with meteorological forecasts and seasonal planning cycles. |
| 2 | Target the specific tactic, not just the claim | Generic corrections underperform responses that disrupt the underlying cognitive mechanism. Cherry-picking and institutional distrust each need a different counter — design accordingly, not as one-size-fits-all rebuttals. |
| 3 | Treat search spikes as communication windows | High-intent search surges during heat events are opportunities to reach audiences actively seeking information. Strategic content positioned during surges can outcompete denial narratives in organic results. Coordinate publishing with forecast-driven alert escalation. |
Integrating This Intelligence Into Your Audit
The Ripple Research findings should directly inform two specific scores:
Question 1.2 (Scientific Grounding). Consider whether scenarios explicitly account for public confusion driven by denial narratives. A plan that ignores the misinformation dimension isn’t fully grounded in current conditions.
Question 4.3 (Speed-to-Trust and Pre-Bunking Protocol). Pre-bunking should be part of this protocol. An organisation deploying accurate framing ahead of the search spike sits in a materially stronger position than one waiting for misinformation to establish itself first.
Heat resilience communication is no longer purely a public health messaging challenge. It’s an information environment challenge. The organisations that come through the next decade of extreme heat seasons will be the ones that planned for both.
Ready to Act on Your Results
Your score points somewhere; the question is what to do about it. Both organisations work directly with clients on the operational plan, the information environment, or both.
RiskComms FZCO. Philippe Borremans works with organisations across public and private sectors to translate audit findings into tested, operational communication plans — debriefing results and identifying priority gaps, designing and facilitating heat crisis simulations, building or stress-testing communication plans, and training teams on polycrisis response. Contact: philippe@riskcomms.com, www.riskcomms.com.
Ripple Research. Helps organisations understand and navigate the information environment around critical global challenges — monitoring sector-relevant misinformation narratives, developing pre-bunking content targeting specific denial tactics, analysing audience discourse, and building evidence-based counter-messaging frameworks. Contact: www.rippleresearch.ai.
Sources and References
- World Health Organization. (2026, April). Climate change, heat and health. https://www.who.int/news-room/fact-sheets/detail/climate-change-heat-and-health
- United Nations Office for Disaster Risk Reduction et al. (2025, November). Extreme Heat Risk Governance Framework and Toolkit. Launched at COP30, Belém, Brazil.
- City of Paris. (2025, July). Paris at 50°C: Summary and Main Findings. https://cdn.paris.fr/paris/2025/07/22/paris\_at\_50-c\_summary\_en-3ueq.pdf
- Donback, N. (2026, May 5). Cities are rehearsing for deadly heat. Will it help when disaster comes? Grist. https://grist.org/cities/cities-are-rehearsing-for-deadly-heat-will-it-help-when-disaster-comes/
- Ripple Research. (2026, May). In the Heat of Denial: Decoding Climate Deniers’ Heatwave Arguments. www.rippleresearch.ai
© 2026 Philippe Borremans / RiskComms FZCO & Ripple Research. This document may be reproduced for internal organisational use. For licensing, training delivery, or consultancy enquiries, contact philippe@riskcomms.com or visit www.rippleresearch.ai.