cold front


Also found in: Dictionary, Thesaurus, Acronyms, Wikipedia.

cold front

Meteorol
1. the boundary line between a warm air mass and the cold air pushing it from beneath and behind as it moves
2. the line on the earth's surface where the cold front meets it

cold front

[′kōld ‚frənt]
(meteorology)
Any nonoccluded front, or portion thereof, that moves so that the colder air replaces the warmer air; the leading edge of a relatively cold air mass.

cold front

cold frontclick for a larger image
A front along which cold air replaces warm air by undercutting it. A cold front is the advancing or leading edge of a steep cold wedge of air. A cold front is characterized by cumulus (Cu) and cumulonimbus (Cb) clouds with frequent precipitation in the form of heavy showers.
References in periodicals archive ?
lt;p>The Erzurum Meteorology Bureau said temperatures had suddenly decreased in the region after snow disappeared and a cold front moved in from Siberia.
There's a cold front moving in that could bring some rain on Wednesday morning but the sun should be out by the afternoon with a few light showers.
The obvious effect of a cold front is the temperature change.
We did not predict which scenarios would have the highest counts in fall, because cold front passages could either elevate stopover bird counts by stimulating arrival of birds, or lower them by stimulating departure.
The relentless cold front powered into its sixth day Wednesday with a fast-moving, freezing storm that dumped a thin layer of the white stuff over a number of Southland communities -- some that haven't seen it for decades.
It was the evening of October 6 and a cold front had just moved in.
The storms were caused by a cold front coming in from the west, which collided with hot humid air.
A cold front forms when chilly air swoops beneath warm air and replaces it.
Excessive cold lapping along the top flange also was caused by the cold front of metal delivered toward the end of the pour.
A cold front usually causes heavy precipitation followed by colder weather.
Meteorologists say a strong cold front of minus 40 C was observed at 5,000 meters above the Sanin coast in western Japan.
Wildlife Officer Mark Hollinhead of the Florida Game and Fresh Water Fish Commission was on patrol on Lake Okeechobee when a rapidly approaching cold front turned the calm water into a sea of froth.