A National Hurricane Center satellite specialist, James Lushine, stated " during very unstable weather conditions the downburst of cold air from aloft can hit the surface like a bomb, exploding outward like a giant squall line of wind and water.

* 1925 – USS Shenandoah ( ZR-1 ), the United States ' first American-built rigid airship, was destroyed in a squall line over Noble County, Ohio.

An arcus feature is a roll or shelf cloud that forms along the leading edge of a squall line or thunderstorm outflow.

These clouds can form alone, in clusters, or along a cold front in a squall line.

Thunderstorms may line up in a series or rainband, known as a squall line.

There are four main types of thunderstorms: single-cell, multicell, squall line ( also called multicell line ) and supercell.

A squall line is an elongated line of severe thunderstorms that can form along and / or ahead of a cold front.

The squall line contains heavy precipitation, hail, frequent lightning, strong straight line winds, and possibly tornadoes and waterspouts.

Severe weather in the form of strong straight-line winds can be expected in areas where the squall line itself is in the shape of a bow echo, within the portion of the line that bows out the most.

A guide to the symbols for weather fronts that may be found on a weather map: 1. cold front 2. warm front 3. stationary front 4. occluded front 5. surface trough 6. squall line 7. dry line 8. tropical wave

When the convection is strong and linear or curved, the MCS is called a squall line, with the feature placed at the leading edge of the significant wind shift and pressure rise.

On June 20, 2011 at around 8 pm local time, a large squall line of storms entered the Fremont area and dropped an EF1 tornado east of downtown causing a damage path long and 700 yards wide.

At times this may be moot due to weather, such as when the tall cumulonimbus clouds of a squall line of thunderstorms reflect the signal over the top, like an extremely tall radio tower.

While many ordinary thunderstorms ( squall line, single-cell, multi-cell ) are similar in appearance, supercells are distinguishable by their large-scale rotation.

Cyclonic vortex over Pennsylvania with a trailing squall line.

A squall line is a line of severe thunderstorms that can form along or ahead of a cold front.

Strong straight-line winds can occur where the squall line is in the shape of a bow echo.

During their approach to Guadalcanal, the Japanese force passed through a large and intense rain squall which, along with a complex formation plus some confusing orders from Abe, split the formation into several groups.

A squall line developed along the system's cold front, which moved rapidly across the eastern Gulf of Mexico through Florida and Cuba.

Wind shear is also a significant factor, linear snow squall bands produce more thundersnow than clustered bands, thus a directional wind shear with a change of less than 54 ° between the ground and 1. 2 mi ( 2 km ) in height must be in place, any change in direction greater than 54 ° through that layer will tear the snow squall apart.

An Abrolhos squall ( or Abroholos squall or simply abroholos ) typically occurs from May through August ( austral winter ) near the Abrolhos Islands off the coast of eastern Brazil near 18 ° S latitude, located between Cabo de São Tomé and Cabo Frio.

Generally, derechos are convection-induced and take on a bow echo form of squall line, forming in an area of wind divergence in the upper levels of the troposphere, within a region of low-level warm air advection and rich low-level moisture.

In addition, squall lines spawned multiple tornadoes, damaging evacuation shelters in Pascagoula and Gautier.

Rainbands spawned near and ahead of cold fronts can be squall lines which are able to produce tornadoes.

The squall line contains heavy precipitation, hail, frequent lightning, strong straight line winds, and possibly tornadoes and waterspouts.

One wave of boats made it across but a squall hit when they returned to take more soldiers across, making the evacuation impossible.

It was nothing more than a tiny distant rain squall, a dull gray sheet which reached from a layer of clouds to the earth.

Watching, they waited until the squall thickened and began to move in a long drifting slant across the dry burning land.

They went after the squall as mercilessly as a wolf pack after an abandoned cow.

Sometimes I guessed it was because the rain squall had changed direction.

Finally, avoiding hummocks and seeking low ground, they intercepted the rain squall.

For ten minutes they ran beneath the squall, raising their arms and, for the first time, shouting and capering.

Then the wind died and the rain squall held steady.

The events typically of interest are thunderstorms, squall lines, fronts, precipitation bands in tropical and extratropical cyclones, and topographically generated weather systems such as mountain waves and sea and land breezes.

With the Intertropical Convergence Zone ( ITCZ ) swinging northward over West Africa from the Southern Hemisphere in April, heavy showers coming from pre-monsoonal convective clouds mainly in the form of squall lines also known as the north easterlies formed mainly as a result of the interactions of the two dominant airmasses in Nigeria known as the Maritime tropical ( south westerlies ) and the Continental tropical ( north easterlies ), begins in central Nigeria while the Monsoons from the south atlantic ocean arrives in central Nigeria in July bringing with it high humidity, heavy cloud cover and heavy rainfall which can be daily occurrence lasting till September when the monsoons gradually begin retreating southward to the southern part of Nigeria. Rainfall totals in central Nigeria varies from in the lowlands of the river Niger Benue trough to over along the south western escarpment of the Jos Plateau.

She and Marshall had been unable to have children, and when she brought the baby home, Marshall told her that she could " keep him, provided he did not squall ..." Marshall grew to love the boy and wrote that he " never walked the streets of Washington with as sure a certainty as he walked into my heart ", and, as the boy grew older, that he was " beautiful as an angel ; brilliant beyond his years ; lovable from every standpoint.

One of their two transport planes missed its drop zone, and four SEALs drowned in a rain squall while making an airborne insertion with their boats off the island's coast.

Typically lake-effect precipitation will increase with elevation to the lee of the lake as topographic forcing squeezes out precipitation and dries out the squall much faster.

It is not uncommon, during the summer, to ride on sunbaked roads, then round a corner to come suddenly on drenched and steaming tarmac where a squall has passed only minutes earlier.

Multicell storms form as clusters of storms but may then evolve into one or more squall lines.

On the back edge of the rain shield associated with mature squall lines, a wake low can form, which is a mesoscale low pressure area that forms behind the mesoscale high pressure system normally present under the rain canopy, which are sometimes associated with a heat burst.