Very short-term (0–6 hour) forecasting using radar/satellite extrapolation and rapid-update models. For example, Radar nowcasting suggests the heaviest rain will reach the site within 40 minutes.

Forecasting & Early Warning

Nowcasting

Very short-term (0–6 hour) forecasting using radar/satellite extrapolation and rapid-update models.

Example Usage

"Radar nowcasting suggests the heaviest rain will reach the site within 40 minutes."

Typical Units & Data

Minutes–hours

Related Keywords

rainfall nowcast radar extrapolation short-term forecast 0–6h forecast

Related Terms

Forecasting & Early Warning

Quantitative precipitation forecast (QPF)

Forecast of rainfall amounts over space/time from numerical weather prediction models..

Forecasting & Early Warning

Ensemble forecast

Set of model runs with varied initial conditions/physics to represent uncertainty..

Forecasting & Early Warning

Probabilistic forecast

Forecast expressed as a probability of exceeding thresholds (e.g., 30% chance stage > trigger)..

Forecasting & Early Warning

Lead time

Time between alert issuance and expected threshold exceedance/impact; drives response options..

Forecasting & Early Warning

Threshold / trigger level

Pre-defined value that initiates a notification or action (stage, rainfall, tide, probability)..

Forecasting & Early Warning

Flood warning levels (UK)

Standard categories (e.g., Flood Alert, Flood Warning, Severe Flood Warning) used to communicate urgency..

FloodWatch Resources

Infrastructure Operations Logistics & Distribution

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