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]
- Relevant Clause References: [CLAUSE REFS FROM YOUR CONTRACT, if known]
- 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 (use only the clause references I have provided, otherwise leave a [CLAUSE REF] placeholder) notifying the Employer's Agent, Contract Administrator or Project Manager (as the stated contract form requires) 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 the Contract Weather Test: apply the test in the stated contract form, including any amendments. Under JCT, the Relevant Event is exceptionally adverse weather conditions, so compare the weather experienced with historical records for the site and time of year. Under NEC4, the compensation event compares the weather measured over a calendar month, at the place stated in the Contract Data, with the weather data: only weather that occurs on average less than once in ten years counts, and only the difference beyond that level is taken into account
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, assessed on the basis in item 4 and after any mitigation, with the revised completion date requested
7. Cost Implications: whether the delay event entitles the contractor to money under the contract (note: under JCT, exceptionally adverse weather is a Relevant Event for time but does not usually carry loss and expense; under NEC4, a weather compensation event can carry both time and money)

Use only the clause references I have provided, otherwise leave [CLAUSE REF] placeholders, and reference the weather data source provided. The notice should be suitable for formal submission to the Employer's Agent, Contract Administrator or Project Manager named in the contract. Check your contract and take advice.