frontal system

frontal system

[′frənt·əl ‚sis·təm]
(meteorology)
A system of fronts as they appear on a synoptic chart.
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The solution has been developed on an absolutely new Sberbank tech platform - the Single Frontal System.
Perhaps another frontal system arriving during Thursday bringing a mixture of rain, sleet and snow, although cold with frost and patchy freezing fog ahead of this.
The chief forecaster said: "An active frontal system will bring rain into Northern Ireland in the early hours of Sunday.
This regime features frontal system passages dominated more by ice-phase microphysics and incidences of postfrontal convection.
The South African Weather Services (SAWS) indicated that intense cold frontal system that caused the recent severe weather over the Cape Town region is moving eastwards south of the country.
The frontal system affecting extreme northern Luzon and the southwest monsoon is affecting the western section of northern and Central Luzon, the Philippine Atmospheric Geophysical and Astronomical Services Administration said.
Cloud in the west would suggest the approach of a frontal system and poor weather on its way.
Met Office meteorologist Alex Burkill said following the unsettled weekend, the frontal system is "quite weak" but is moving northwards gathering strength.
Huddersfield weather expert Paul Stevens, below, said a halo is formed by high cloud at about 28,000ft or 30,000ft which is usually in advance of a frontal system from the west which is a sign of rain on the way.
A chief forecaster for the Met Office said: "The active frontal system will increasingly come into contact with colder air, with the likelihood that it will start to turn to sleet or snow in places early on Wednesday.
A frontal system aligned within this flow is expected to bring a period of heavy and persistent rain, this aided by tropical air being entrained into the system.