"The frontal system
and low pressure is of concern as it comes up against a developing high pressure out to our east.
"The low-pressure centre is likely to track across the northwest of Britain, whilst an active frontal system
comes southeast across England and Wales.
A strong Pacific frontal system
will likely produce the heaviest rainfall in several months, estimated at 2 to 4 inches today and Sunday along the coast, the Coast Range and in the Cascades, and an inch or more in the valleys.
Cloudy skies and rainshowers are expected across the country this weekend due to localized thunderstorms and the prevailing frontal system
in the atmosphere, the state weather bureau said Friday.
Meanwhile, the Ilocos Region, Cordillera Administrative Region, Cagayan Valley and the province of Aurora will have cloudy skies and scattered rain due to a frontal system
affecting Northern Luzon.
This is where we find the frontal system
, with its cold fronts and warm fronts and large areas of clouds, precipitation, and low ceilings and visibilities.
A Met Office spokesman said: "A frontal system
is expected to become slow-moving across parts of northwest Wales, northwest England and southwest Scotland.
The Met Office said: "Cold air will move southeast across the UK following a frontal system
About 6 inches of snow could fall with each new frontal system
, the weather service said.
Ilocos Region, Cordillera Administrative Region, and Cagayan Valley will also experience cloudy skies with scattered rains and thunderstorms due to the frontal system
, the boundary between cold and warm air masses.
Cloudy skies with chances of scattered rain and thunderstorms are seen in extreme Northern Luzon due to a frontal system
, the state weather bureau said Friday.
VMC will normally prevail if you're at least a couple of hundred miles behind the frontal system