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Bow Echo

Meteorology Boundary LayerBowen Ratio

Bow Echoes on Radar often accompanied by strong outflow winds
Large scale bow-shape squall lines sometimes are called line-echo wave patterns (LEWPs). Large areas of strong outflow winds, sometimes reaching strong downburst force, often occur.

 


Bow Echo- A radar signature formed by a line of thunderstorms where the line bulges outward into a bow shape. Damaging winds often occur near the center of the bow echo but can occur anywhere along the bowing line.

Bow Echo - A radar echo which is linear but bent outward in a bow shape (Fig. 1). Damaging straight-line winds often occur near the "crest" or center of a bow echo.

Bow Echo - A line or line segment of storms that forms a curved segment similar to that of an archer's bow. Usually indicative of strong to severe surface winds.

BOW ECHO - An accelerated portion of a squall line of thunderstorms, taking on a radar indicated bow configuration, created by strong downburst winds
BREEZY - Sustained winds of 15 to 25 mph.

BOW ECHO A radar echo signature often associated with severe thunderstorms, especially those that produce wind damage. It is bent outward in a "bow" shape.

Bow Echo A rapidly moving crescent shaped echo on a radar which is convex in the direction of motion. It is associated with strong, straight-line winds.

BOVCBase of OvercastBow EchoA radar echo which is linear but bent outward in a bow shape. Damaging straight-line winds often occur near the "crest" or center of a bow echo.

The potential for strong outflow and damaging straight-line winds increases near the bulge, which often resembles a bow echo. Severe weather potential also is increased with storms near the crest of a LEWP.

The bow echoes move along the line in the direction of the mean flow, often southwest to northeast. These storms move at speeds exceeding 35 knots. Squall line movement is often less than 30 knots.

A series of LEWPs and bow echoes move along the line. The downburst activity is associated with the LEWPs and bows. A Serial Derecho tends to be more frequent toward the north end of the line during the late winter and spring months.

Browse Related Terms: Bow Echo, Dry Line Storm, Isohel, Isohyet, Line Echo Wave Pattern, LN, Outer Convective Band, Plow Wind, Pre-Frontal Squall Line, Pre-Hurricane Squall Line, SQLN, Squall Line, Thin Line Echo, Tilt, Tornado Family ...

macroburst"A downburst on the misoscale. Bow echoes are often associated with macrobursts. See also microburst.
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ANCHOR CELL - A thunderstorm cell just below a break in a storm cluster, line, or bow echo. Cells in this region can behave like supercells.

A thunderstorm radar echo which has a comma-like shape. It often appears during latter stages in the life cycle of a bow echo.
Condensation funnel ...

Bow Echo: A term used to describe a line of thunderstorms in the form of a bow. This type of weather pattern can produce high winds in excess of 70 mph with straight line damage.
Bowen Ratio:The ratio between "Sensible Heating" and "Latent Heating".

It often appears during latter stages in the life cycle of a bow echo Complex Gale/Storm In the high seas and offshore forecasts, ...

See also: Storm, Weather, Atmosphere, Radar, Cloud

Meteorology Boundary LayerBowen Ratio

 
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