Skip to main content
Glite Dictionary
📊 A past prediction 🔄 An updated forecast 🔁 To predict again
reforecast

reforecast

7.5
A prediction for a past period made with a current computer model to test it
  • noun
  • /ˌriːˈfɔːrkæst/
  • Specialized
translation icon : retropronóstico
  • By comparing the reforecast with actual historical data, the team improved their predictions.

Examples

  • We need to prepare a reforecast for last quarter's sales.

  • Each reforecast helps researchers understand how well the system would have predicted past events.

  • The climate scientists analyzed the reforecast to assess the accuracy of their new model.

  • The reforecast showed a significant change in trends.

  • The climate scientists analyzed the reforecast to assess the accuracy of their new model.

  • Each reforecast helps researchers understand how well the system would have predicted past events.

  • By comparing the reforecast with actual historical data, the team improved their predictions.

Synonyms

to hindcast
vsreforecast
  • Specialized
1 8.8

To use a model to recreate past weather or ocean conditions

frames the same process as making past forecasts to validate forecasting systems
backcast
vsreforecast
  • Specialized
9.3

An analysis that uses current models to estimate past events

is specifically a past-period forecast used to test and calibrate forecasting systems

Surface Forms

reforecast singular
reforecasts plural

Morphology

reforecast = forecast (semi-transparent) = re + forecast

Formally 're-' (again) + 'forecast' is clear, but the technical meaning 'forecast for a past period using a current model' is a specialized usage not obvious to all learners.

Etymology

Reforecast comes from the prefix re- ('again') and the word forecast ('to predict'). Think of it like 'replaying' a prediction with a new model to see how it would have predicted the past, so a reforecast is a test prediction for an earlier time.