Question

Which tools do meteorologists use to help create weather forecasts?

guesses
weather service maps
opinions from weather watchers
personal observations

Answer 1

Short answers for your three guesses
- weather service maps — Yes. Meteorologists use many kinds of maps (surface charts, upper‑air charts, model output charts) to see current conditions and predicted evolution.
- opinions from weather watchers — No, not as a forecasting tool. Unverified opinions aren’t used. However, reports from trained spotters or organized observer networks (actual measured observations) are used.
- personal observations — Sometimes. Systematic observations (METARs, personal weather station reports, CoCoRaHS/spotter reports) are valuable data. Casual personal opinions are not.

Common tools meteorologists do use (brief)
- Satellites — show cloud cover, storm development, water vapor.
- Radar (including Doppler) — tracks precipitation, storm structure, winds.
- Surface and upper‑air observations — weather stations, buoys, radiosondes (weather balloons), aircraft reports.
- Numerical weather prediction models — GFS, ECMWF, NAM, etc., run on supercomputers.
- Weather maps and charts — synoptic charts, model output graphics, ensemble plots.
- Automated observing networks and sensors — ASOS/AWOS, automated weather stations, lightning detectors.
- Climatology and historical data — to put forecasts in context.
- Human expertise — forecasters interpret model output, observations, and local effects.

If you want, I can group those by short‑term vs long‑term forecasting tools or give one paragraph on how the forecasting process works.