squall line


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squall line

[′skwȯl ‚līn]
(meteorology)
A line of thunderstorms near whose advancing edge squalls occur along an extensive front; the region of thunderstorms is typically 12 to 30 miles (20 to 50 kilometers) wide and a few hundred to 1200 miles (2000 kilometers) long.

squall line

A narrow zone of meteorological activity usually parallel or nearly parallel to a cold frontal surface, occurring some distance away. Squall-line activity, or a line squall, is characterized by thunderstorms, heavy rain, brief wind shifts, gusty winds, abrupt pressure rises, and abrupt temperature falls.
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References in periodicals archive ?
As a general rule, this does not develop in a squall line unless a break forms in the main line and strengthens, or this segment moves ahead of the line, or if an isolated storm forms ahead of the line.
THE DREADED SQUALL LINE: Feared by pilots and detested by storm chasers, squall lines are among the most serious of routine weather phenomena with their strong winds, hail and heavy rain
The November 15 scourge of twisters formed in a squall line, while the November 6 monster descended from a broken line that formed an out-of-season supercell.
Tricky twisters: springtime is tornado season--or is it? Recent studies shed new light on these spinning storms
With these two modifications, the simulation is significantly improved in the strength of the cold pool, movement of the squall line, the total precipitation produced, and the trailing stratiform precipitation (Fig.
The Southern China monsoon rainfall experiment (SCMREX): a unique program is developed for improving heavy rainfall forecasts over southern China during the presummer rainy season through field campaigns and research on physical mechanisms and convection-permitting modeling
Conway, 1990: The generation and propagation of a nocturnal squall line.
The 2015 plains elevated convection at night field project
Threading through a squall line moving at 30 knots or more can result in actual weather being 10 miles away from where it's shown to be.
Reading radar right: just like landing, it's a skill to be learned and practiced. Knowing how radar "sees" rain and how to overcome its limitations can help
Squall lines can propagate storms well ahead of the line.
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The highest winds in a squall line almost always occur before it rains or hails.
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We should never be surprised by a squall line or a hot, juicy air mass.
Using spherics
At first glance, appending "windstorm" after squall line may seem redundant given that "squall" implies the presence of strong wind.
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1, the only initial kinetic energy in these simulations is in a horizontally uniform wind field; the spectra for the ensemble-mean KE therefore develop from zero along with the growing squall line.
Thunderstorms do not get butterflies
The squall line has a very unusual structure compared to other types of storms; in about 95 percent of them, the updraft will be found on the leading edge of the squall line.
Thunderstorm-think: now that we're in the spring months, it's time to revisit one of our old friends, the thunderstorm, and take a close look at this hazard like a forecaster
I like to watch a good squall line go through, although I prefer that it not do any damage.
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