What Do The Colors on The Radar
|What do the colors on TV
This is one of the most commonly asked questions. The answer
depends on which maps you are looking at. Most
often this question refers to the
radar maps commonly seen in television broadcasts, which
tell about weather moving through your
There are different types of weather
maps. What you are most likely talking about is the color
radar maps seen on TV.
The different colors represent the intensity and
precipitation. The colors represent decibels of
Reflectivity (Dbz), which is the amount of power reflected back
to the radar receiver.
if you look at the maps, you will see a Dbz scale right next to
the color scale. The two are related. As the
strength of the signal reflected back to the receiver
increases, the Dbz number increases.
The scale relates to the intensity of rainfall as well.
The higher the Dbz, the stronger the rainfall. Hail, for
example is a good reflector of energy and will return very
high Dbz values.
In addition, these maps show movement and locations of weather
phenomena. These radars can show us many things, like the
hook echoes which are indicative of a tornadic
Also, it is not well known that radars have two modes.
One is the precise clear air mode and the other is a
GENERALLY SPEAKING HERE ARE
THE MEANINGS OF COLORS:
Green corresponds to lighter precipitation, often
not hitting the ground.
Light green is often “ground clutter”, which are
essentially false echoes
is usually light, approaching moderate
Yellow moderate rain
Orange heavier rain
Red heaviest rain, flooding rains, possibly hail or
damaging winds and thunderstorms
Light pink corresponds to light freezing rain
and/or sleet possibly mixed with rain or
Darker pink corresponds to heavier icy
Light gray corresponds to lighter snowfall
Bright white corresponds to heavier
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