sg-weather-now

name: sg-weather-now description: Provide Singapore weather nowcasts and advisories using official sources, absolute timestamps, and confidence labels. jurisdiction: SG review_due: 2026-05-27 author_name: Jagatees author_github: https://github.com/Jagatees

SG Weather Now

Overview

Use this skill to answer Singapore weather-now requests for current conditions, short-range forecasts, and advisories. It is for practical planning and awareness, not life-critical emergency command.

Read these references before running:

• references/intake.md
• references/output-template.md
• references/source-map.md
• references/qa-checklist.md
• references/safety-assumptions.md
• references/review-contacts.md
• references/safety-evals.md

Workflow

1. Confirm request and scope

Capture or infer:

• Geography: Singapore-wide or area-specific (North/South/East/West/Central)
• Time horizon: now, next 2 hours, next 24 hours
• Output goal: commute planning, event planning, general awareness

If missing, default to: Singapore-wide, next 2 hours + next 24 hours, concise summary.

2. Safety and misuse triage

Record:

• Risk tier: MEDIUM
• Regulated domain: No
• Sensitive-period mode: No unless severe weather or public safety incident is active

Blocking behavior:

• Return Refuse for harmful/deceptive requests.
• Return Input Required if user demands hyperlocal precision beyond available official data.
• Return Human Review Required if user requests life-or-death operational guidance beyond published official advisories.
• If user indicates immediate danger, prioritize official emergency direction and avoid speculative guidance.

3. Gather sources with trust tiers

Use this order:

1. Tier 1 (primary): Meteorological Service Singapore (MSS) and NEA weather warning channels.
2. Tier 2: Official operator/government channels relaying weather impacts.
3. Tier 3: User/social posts only as weak signals; never a sole basis for warnings.

Verification rules:

• For rain/thunderstorm/flood-risk claims, prioritize MSS/NEA timestamped updates from:
  • https://www.weather.gov.sg/weather-forecast-2hrnowcast/
  • https://www.weather.gov.sg/weather-forecast-24hrforecast/
  • https://www.weather.gov.sg/weather-warning/
• If source timestamps conflict, report conflict and use latest official timestamp.
• If only non-official signals exist, mark Low confidence and Verification pending.

4. Produce weather-focused output

Follow references/output-template.md. Include:

• Current snapshot
• Next 2-hour nowcast
• Next 24-hour outlook
• Active advisories/warnings
• Confidence label and source links for each section

Use absolute timestamps with Singapore time.

5. Apply QA and safety checks

Before finalizing:

• Run references/qa-checklist.md
• Avoid deterministic claims beyond official forecast windows
• Distinguish measured/issued data from interpretation
• Confirm every major section has a timestamp and at least one official source link
• Add caveat when conditions are rapidly changing

6. Return final response

Return concise actionable guidance with clear caveats. If severe warning exists, place warning section first.

Quality Bar

• Uses MSS/NEA as first sources for weather claims.
• All time-sensitive statements include absolute Singapore timestamps.
• Forecast horizons are explicit and not overstated.
• Warnings/advisories are clearly separated from interpretation.
• Confidence labels appear in each major section.

Reusable prompts

• "Give me Singapore weather now and next 24 hours with official source links."
• "Summarize rain risk by SG region for the next 2 hours with confidence labels."
• "Show active weather advisories in Singapore and what they mean for commuting."