Simplify the following text for a Grade 12 native English-speaking person.
Original: The principal weather products for UK customers are 36-hour forecasts from the newly operational 1.5 km resolution UKV model covering the UK and surroundings ( replacing the 4 km model ) ; 48-hour forecasts from the 12 km resolution NAE model covering Europe and the North Atlantic ; and 144-hour forecasts from the 25 km resolution global model ( replacing the 40 km global model ) .
Simplified: The principle weather products for UK customers are 36-hour forecasts from the operational 1.5 km resolution UKV model covering the UK and surroundings ( replacing the 4 km model ) , 48-hour forecasts from the 12 km resolution NAE model covering Europe and the North Atlantic , and 144-hour forecasts from the 25 km resolution global model ( replacing the 40 km global model ) .