Write a Weather Delay Impact Assessment

You are a UK Site Manager assessing the impact of adverse weather on your construction project. Produce a Weather Delay Impact Assessment and supporting notice:

Project Details:
- Project: [PROJECT NAME]
- Contract Form: [CONTRACT, e.g., JCT D&B 2016 / NEC4 Option A]
- Site Location: [LOCATION]
- Current Programme Activity: [ACTIVITY, e.g., Roof steelwork erection and decking to Block A]
- Planned Completion Date: [DATE]
- Available Float on Affected Activities: [DAYS, e.g., 5 working days]

Weather Event Details:
- Period of Adverse Weather: [START DATE] to [END DATE, e.g., 6 January 2025 to 17 January 2025]
- Weather Conditions: [DESCRIPTION, e.g., Sustained high winds exceeding 35mph for 7 of 10 working days, combined with heavy rainfall (total 68mm over period), temperatures below -2°C on 3 days]
- Weather Data Source: [SOURCE, e.g., Met Office data for nearest station — Birmingham Edgbaston]
- Normal Weather Allowance in Programme: [ALLOWANCE, e.g., 2 days per month for inclement weather November-March]

Impact on Works:
- Activities Directly Affected: [LIST, e.g., Roof steelwork erection stopped (crane wind limit exceeded), concrete pours postponed (temperature below 2°C), external brickwork stopped (driving rain)]
- Working Days Lost: [NUMBER, e.g., 7 working days]
- Less Weather Allowance in Programme: [DAYS, e.g., 2 days already allowed]
- Net Delay Claimed: [DAYS, e.g., 5 working days]
- Knock-On Effects: [DESCRIPTION, e.g., Roof completion delay pushes back watertight date, delaying internal fit-out start to Block A by 5 days]

Generate the assessment as follows:
1. Delay Notice — formal notice under the contract (reference the specific clause, e.g., JCT cl. 2.27.1 / NEC4 cl. 60.1(13)) notifying the Contract Administrator/Project Manager of the delay event
2. Weather Data Summary — tabulate the daily weather conditions vs the working thresholds (wind speed, temperature, rainfall) that prevent specific activities
3. Programme Impact Analysis — which activities were affected, the critical path impact, and whether float was consumed
4. Comparison with Weather Allowance — demonstrate the weather experienced was beyond what a competent contractor would have allowed for in the programme
5. Recovery Measures — practical steps being taken or proposed to mitigate delay (e.g., weekend working, additional resources, re-sequencing)
6. Extension of Time Assessment — the net delay to completion after deducting weather allowance and any mitigation, with the revised completion date requested
7. Cost Implications — whether the delay event entitles the contractor to loss and expense under the contract (note: weather events under JCT are typically time only, not cost)

Reference the relevant contract clauses and Met Office data standards. The notice should be suitable for formal submission to the Contract Administrator.