Nowcast

Rainfall and wind expected in the next six hours.

Not yet available from GMS

The nowcast will appear here once GMS publishes it. Meanwhile, see current conditions at MBIA.

Nowcast rainfall and wind fields will appear here once the short-range model is connected.

Short-range model output — model not yet connected

What a nowcast is for

A nowcast answers a different question from a forecast: not what the day will be like, but whether the next two hours are usable. It is the right product for deciding whether to start a concrete pour, run a ferry crossing, or hold an outdoor event.

Confidence falls away quickly beyond about three hours. Past six hours, the daily forecast is the better guide.