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Value Added Service Weather Products
VALUE ADDED SERVICE WEATHER
PRODUCTS
The following is a discussion of weather products offered with the value
added, subscription service. Accessing and navigating these services
will be discussed in detail later in this addendum.
NEXRAD
Next Generation Radar (NEXRAD) is formally designated WSR-88D,
which stands for Weather Service Radar (Doppler) and was commis-
sioned in 1988.
The NEXRAD base reflectivity mode provides a display of echo inten-
sity depicted by colors. NEXRAD information is good for identifying
precipitation intensity.
This NEXRAD base reflectivity data product content consists of reflec-
tivity measured at the minimum scan angle of 0.5 degree elevation.
CAUTION: NEXRAD data must be used for strategic planning pur-
poses only. Due to inherent delays and relative age of the data
that can be experienced, NEXRAD data cannot be used for tactical
avoidance of weather.
NEXRAD Base Reflectivity images older than 75 minutes are discarded
and no longer displayed.
Figure 1 shows a typical
NEXRAD display. Political
boundaries, rivers, lakes,
and oceans are depicted in
conjunction with weather.
The NEXRAD data map is
always displayed in a north
up orientation.
The display range may be
changed to zoom in on a
specific area to get a more
detailed weather picture, or
Figure 1
zoom out to display a wider
range.
9
Revision 2 Nov/2002
KMD 550/850 FIS Addendum
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