Weather Risk Calendars

Turn probabilistic weather impact into deterministic calendars and risk registers. Build plans that reflect reality in P6, Asta, PRA, Acumen, Safran, Nodes & Links and OPC.

  • Export ready‑to‑import calendars by activity type
  • Weekly downtime built‑in from location‑specific risk
  • Keep statistical integrity for QSRA with probabilistic exports
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Make schedules truthful — and risk models credible

EHAB turns location‑specific, probabilistic weather impacts into deterministic calendar adjustments and risk registers you can import in minutes. No guesswork, no manual maths.

Deterministic days off

Automated "days off" per activity type reflecting expected weekly weather downtime.

Probabilistic integrity

QSRA exports (calendars, registers, samples) preserve the distribution of weather impacts.

Import in minutes

Step‑by‑step import guides for each tool — zero reformatting required.

North Quay Wind Farm — Foundation Pour
NR7 0WG Activities: 128 Duration: 3.2 yrs Marine ops Concrete Lifts
Sample data
Summary
Weather calendar
—
days with ≥50% likelihood of impact
—
expected weather days / year
—
winter peak day probability of impact
Peak risk months: —
Top peril: —
Datasets
80+
years (historical + climate)
10 km
world grid (land & maritime)
80+
weather variables (wind, waves, snow, etc)
Powered by ECMWF and other leading datasets; supports multiple climate trend scenarios.
Perils impacting activities (share)
Activity-weighted
Outputs & exports
One‑click
Deterministic
Activity‑type calendars (days‑off / week)
Probabilistic
Registers & samples for QSRA
Export

Primavera P6 Calendars

Oracle
48k+ calendars exported 4 yrs live Official Oracle partner

Based on your plan's activities and calendars, we calculate expected weekly weather risk and generate P6 Resource or Project Calendars representing activity types like concrete and lifting — with "days off" for weather impacts. Incorporate EHAB's probabilistic impact as deterministic days in your P6 planning.

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Deltek Acumen Risk

Deltek
42k+ months exported 3 yrs live 2k+ runs Tested & approved by Deltek

EHAB integrates with Acumen Risk via Risk Register spreadsheets. Import these registers to incorporate weather probabilistic impact in your Acumen QSRA.

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Safran Risk

Safran
350k+ samples 2 yrs live 1k+ runs Tested & approved by Safran

EHAB exports Downtime Samples which Safran uses to generate Risk Calendars. Import the samples, allocate to activities, and preserve probabilistic weather impact in your simulations.

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Asta Powerproject Calendars

Asta Powerproject
800+ calendars exported 1 yr live Tested & approved by Elecosoft

EHAB's WeatherWise generates Asta calendars per activity type with pre‑computed "days off" for weather impacts, based on your plan's activities and calendars. Bring EHAB's probabilistic impact in as deterministic days in Asta.

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Primavera Risk Analysis (PRA)

Oracle
5k+ calendars 5 yrs live 1.2M+ daily estimates Approved

For each activity type, EHAB exports Weather Calendars with the probability of impact for every 3 days of the project. Assign these calendars to activities in PRA (manually or automatically via EHAB assignment) to incorporate weather probabilistic impact in Monte Carlo simulations.

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Oracle Primavera Cloud (OPC)

Oracle
9k+ events 3 yrs live 300k+ runs Official Oracle partner

Integrate via Risk Register Calendar Events. Import EHAB's weather risk events to maintain statistical integrity across simulations in OPC.

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Calendars & QSRA — FAQs

Anything else? Ask us below.

Ask us a question
Which tools do you support?▾
Primavera P6, Asta Powerproject, Primavera Risk Analysis, Deltek Acumen Risk, Safran Risk, Nodes & Links, and Oracle Primavera Cloud.
How do the "days off" work?▾
EHAB's WeatherWise calculates expected weekly downtime from location‑specific weather risk. Calendars encode these as non‑working days per activity type.
Can I keep it probabilistic for QSRA?▾
Yes. Use our PRA calendars, Acumen registers, Safran samples, or OPC register events to keep statistical integrity across simulations.
What inputs do you need from my schedule?▾
Typical imports: project calendars, activity codes/types, activity locations (site or lat/lon), and optional work‑patterns. We map these to weather‑sensitive activity classes automatically.
How accurate are the weather estimates?▾
We fuse hindcast (80+ years) and climate‑adjusted projections on a ~10 km grid, bias‑corrected and QC’d. Accuracy varies by peril and location—our summary shows peak months and top peril to set expectations.
How often should I refresh the calendars?▾
Refresh when the plan changes materially (logic, durations, windows) or at phase gates. Most teams re‑run monthly or at each re‑baseline.
Do you support marine and onshore projects?▾
Yes—global maritime and onshore coverage. Marine operations (waves/swell, wind, lightning, visibility) are supported out‑of‑the‑box.
Can I audit the math behind the outputs?▾
Every export includes the underlying assumptions: location, activity mapping, peril thresholds, and sampled probabilities. Use the perils breakdown and peak‑month summary for quick QA.

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