Location Based Downtime Report

Standalone evidence to support Extension of Time, compensation and relevant event assessments under NEC and JCT. Compare monthly weather against 1‑in‑10 year thresholds and long‑term averages with clear anomaly signals.

  • Purpose‑built for post‑event analysis and disputes
  • Monthly value vs 1‑in‑10 and Long‑Term Average with anomaly assessment
  • Daily breakdowns for rainfall, snowfall, temperature, wind and sunshine
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Clear, defensible weather evidence for your project

We mirror the core logic used in location‑based downtime assessments — monthly vs 1‑in‑10 and long‑term averages — and include daily details for transparency.

NEC/JCT aligned

Compare against 1‑in‑10 values (NEC) and Long‑Term Averages (JCT) to assess exceptional conditions.

Global coverage

World‑class datasets (ECMWF ERA‑5 / ERA‑5 Land) on a ~10×10 km grid, land and sea, provide robust conditions for any location worldwide.

Standalone PDF

Designed for claims, adjudication and audit. No planning‑tool export or import required.

Sample report preview
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Sample downtime report image

The report presents monthly summaries with anomalies and 1‑in‑10/LTA comparatives, followed by daily charts for rainfall, snowfall, temperature, wind and sunshine, and a map of the location.

How it’s used
  • • Select a site and month(s) relevant to the claim period
  • • Compare observed month vs 1‑in‑10 and LTA to determine exceptions
  • • Use daily breakdowns to evidence specific days of impact
  • • Attach report to EOT submissions, adjudication or negotiations
Datasets
ERA‑5
Reanalysis since 1979
10 km
Global grid coverage
80+
Variables & perils
Based on ECMWF's ERA‑5 and ERA‑5 Land reanalysis; bias‑corrected and QC’d to provide reliable conditions even where no station exists nearby.

For Contractors & Planners (EOT)

Evidence unusually adverse weather against contract terms with monthly and daily clarity. Align stakeholders on facts and avoid subjective debates.

  • ✓ Assess entitlement using 1‑in‑10 thresholds (NEC) and Long‑Term Averages (JCT)
  • ✓ Daily records across 80+ variables (rain, frost, wind, sunshine, etc.) to pinpoint constraints by date
  • ✓ Attach an authoritative PDF to delay notices and EOT submissions
  • ✓ Global coverage on ~10×10 km grid (land & sea) — reliable anywhere you build

Contractors using detailed weather evidence see materially higher success rates in EOT claims. Stop relying on memory or site photos — bring statistical proof.

For Claims & Disputes Teams

Neutral, data‑driven evidence that de‑escalates conflict and accelerates fair outcomes.

  • ✓ Objective comparatives that make entitlement straightforward, not subjective
  • ✓ Daily timelines for causation: link specific non‑working days to weather
  • ✓ Consistent format aligned to NEC/JCT expectations — easy to review
  • ✓ Supports adjudication, arbitration and settlements with credible facts

Transparent evidence prevents costly disputes and preserves relationships. Everyone sees the same numbers.

For Planners & Schedulers (Baseline & Tender)

Use multi‑decade climate statistics to set realistic weather allowances, choose start windows, and build evidence‑based programmes.

  • ✓Baseline non‑working weather days by month for your site
  • ✓Evidence‑backed TRA at bid stage; no guesswork
  • ✓Seasonality: sequence weather‑sensitive works into better windows
  • ✓What‑if comparisons for alternative start dates

For Owners & Insurers (Risk & Contingency)

Quantify expected downtime and extremes to size contingencies, price risk, and document decisions with a clear audit trail.

  • ✓Expected loss‑of‑working‑day ranges per season and site
  • ✓Contingency and reserve sizing supported by history
  • ✓Portfolio comparables and like‑for‑like benchmarking
  • ✓Clear documentation for governance, audit and financing

Why our downtime reports

Built on authoritative data with a modern delivery experience.

  • ✓Global ERA‑5 / ERA‑5 Land coverage — land & maritime
  • ✓80+ weather variables; choose what matters for your works
  • ✓Flexible baselines (10/20/30+ yrs) to reflect local standards
  • ✓Instant delivery when thresholds are exceeded — never miss notice windows
  • ✓Clear anomaly calls: Above/Below/Near normal at a glance
  • ✓Daily detail for rainfall, snowfall, temperature, wind, sunshine
  • ✓Audit‑ready PDFs; easy to attach to notices and claims
  • ✓Backed by decades of observations and reanalysis science
45%
Projects hit by weather delays yearly
+25.7%
Average duration increase from weather
+23.8%
Average cost increase from weather

Beyond construction

Any weather‑exposed operation can turn uncertainty into measurable, manageable risk.

Transport & Infrastructure
Transport & Infrastructure
Plan possessions and closures with historical flood, snow and wind days.
Renewables & Offshore
Renewables & Offshore
Quantify workable weather windows for lifts, marine ops and maintenance.
Ports & Logistics
Ports & Logistics
Understand storm‑closure frequency to optimise routing and buffers.
Risk & Contingency
Risk & Contingency
Size weather contingencies and document risk decisions with historical evidence.

What they say

“EHAB taps into weather data to provide consistent downtime analysis. It’s a prime example of new tech we’re using at BAM.”
Ivor Barbrook
Ivor Barbrook
Head of Planning, BAM
“We use EHAB in QSRA sessions to model weather risk precisely, giving greater assurance on milestones and helping explore ways to de‑risk.”
Greg Lord
Greg Lord
Construction Planning Lead, SMP Alliance
“Integral to our risk management, enhancing accuracy, saving days of manual analysis, and letting us rehearse projects before work begins.”
Chris McGinness
Chris McGinness
Regional Planning Manager, BAM

Need a downtime report for specific months?

We’ll generate the monthly reports you need for your site and timeframe.

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Downtime reports — FAQs

Anything else? Ask us below.

Ask us a question
What is a Location‑Based Downtime Report?▾
A monthly, site‑specific analysis that compares observed weather against long‑term averages and rare‑event thresholds (1‑in‑10) and includes daily breakdowns. It turns anecdote into objective evidence for claims and post‑event analysis.
Which contracts/clauses does it support?▾
Aligned to widely used UK clauses for exceptional weather, including NEC3/4 clause 60.1(13) and JCT provisions for “exceptionally adverse weather”. The format and metrics map cleanly to typical contract expectations.
What parameters are included?▾
Over 80 variables with daily detail, including rainfall (e.g. days ≥5mm), snowfall, min/mean temperatures, frost, wind (mean/gust), sunshine hours and more. Monthly comparatives show current vs 1‑in‑10 and long‑term average with anomaly calls.
How are 1‑in‑10 and long‑term averages calculated?▾
1‑in‑10 is a return‑period threshold indicating conditions expected ~once every ten years. Long‑term averages use multi‑decade baselines. We support flexible baselines (e.g. last 10/20/30+ years) so you can align to local practice.
How does this help with EOT claims?▾
It demonstrates exceptional conditions vs norms and ties delays to specific days. Example: if a site sees 12 heavy‑rain days vs a 5‑day average, the excess is clearly evidenced for time entitlement under the contract’s weather clause.
Is coverage global?▾
Yes. We use ERA‑5 / ERA‑5 Land reanalysis on a ~10×10 km world grid (land and maritime). Outputs are bias‑corrected and QC’d, providing reliable conditions even without a nearby station.
How fast can I get a report?▾
Instantly for historical months. With monitoring enabled, reports can be auto‑generated as thresholds are exceeded so you never miss notice windows.
What period does one report cover?▾
One calendar month per report. Order multiple months for multi‑period assessments.
Can I use it for planning and tendering?▾
Yes. Use multi‑decade statistics to set baseline weather allowances by month, support TRA at bid stage, and build schedules that reflect expected downtime.
Do you integrate with my systems?▾
The report is a standalone, audit‑ready PDF designed for claims. Our platform can automate detection and notifications so evidence is ready when needed.
Which format do I receive?▾
PDF as standard, suitable for submissions and sharing. If you require machine‑readable outputs for internal analysis, contact us.

Contact us

Want specific months or guidance on NEC/JCT language? Drop your details and we'll get back to you.