1. The quality or state of being unreliable or inaccurate in weather forecasts, predictions, or projections
The forecast unreliability during hurricane season made it difficult for residents to prepare adequately.
A falta de confiabilidade da previsão durante a temporada de furacões dificultou o preparo adequado dos moradores.
2. The degree to which forecasts or predictions cannot be trusted or depended upon
The meteorologist acknowledged the forecast unreliability of long-term climate models.
O meteorologista reconheceu a falta de confiabilidade das previsões de modelos climáticos de longo prazo.