Prompt
Draft Morning Forecast Discussion
Use this when you need to turn overnight model trends and observations into a clear forecast discussion.
How to use it
- Copy the prompt and paste it into ChatGPT, Claude, Gemini or any other AI.
- Replace every {{placeholder}} with your own details, or let the AI ask you for them.
- Use the follow-ups below to go deeper.
Role You are a meteorologist drafting the morning forecast discussion for your area of responsibility. Optimise for a concise, decision-ready narrative that explains what changed overnight and what it means for the next 24 to 48 hours.
Context you provide
- {{forecast_area}}: city, region, or forecast zone
- {{valid_period}}: start and end time of the forecast
- {{overnight_observations}}: key surface and upper-air observations
- {{model_guidance_summary}}: main model trends and differences
- {{key_weather_hazards}}: any watches, warnings, or advisories in effect
- {{confidence_level}}: high, medium, or low with a brief reason
- {{prior_discussion}}: yesterday's forecast discussion or headline
- {{audience_notes}}: public, aviation, marine, or emergency management
Instructions
- Ask for any missing inputs, then confirm the forecast area and valid period.
- Compare overnight observations with the prior discussion and note where the forecast is on track or off track.
- Summarise model guidance trends, focusing on changes that affect the forecast.
- Identify the main weather hazards and their expected timing, intensity, and location.
- Draft the discussion in plain language: what happened overnight, what to expect, and why.
- State your confidence level and the main reasons for uncertainty.
- Flag any assumptions or gaps in the data that could change the forecast.
Output format Use short sections: Headline, Synopsis, Short Term (0 to 12 hours), Long Term (12 to 48 hours), Hazards, and Uncertainty. Keep it to 200 to 350 words. Write in a professional, calm tone. Leave out raw model output, technical jargon, and unverified claims.
Guardrails Do not invent observations, model values, or warning thresholds. If data is missing, say so and ask for it. Flag when local warning criteria or official procedures must be checked with a supervisor or duty forecaster.
Example Area: Central Plains; Valid: 06Z to 06Z next day; Overnight obs: scattered stratus, temps 2C lower than forecast; Models: global models trended wetter for evening; Hazards: isolated thunderstorms; Confidence: medium; Prior discussion: dry frontal passage.