User's Guide

Table Of Contents
Product Glossary
In this Product Glossary, B denotes Baron-generated products, while N denotes non-Baron-
generated products. All product numbers (for example, 4E) are in hexadecimal code.
Italicized words are terms that are defined elsewhere in this glossary.
Base and Convective Storm Products:
1-hour accumulation (4E): Shows the NEXRAD-estimated horizontal distribution of
precipitation over a one-hour time period. N
3-hour accumulation (4F): Shows the NEXRAD-estimated horizontal distribution of
precipitation over a three-hour time period. N
Baron Button 1K (265): A special product that is designed to provide an overall
assessment of a storm. It incorporates VIL density, composite shear and rain rate parameters
into one product, and is displayed in 1 km by 1km pixel resolution. B
base (63) and relative (64) velocity shear markers: Enables the system to display
two types of rings, which are representative of the location where shear is present. A yellow
ring signifies that shear is present in the upper levels (2, 3 or 4) of the atmosphere, while a
red ring signifies a “Low Level Lock”, or shear is present near the surface (level 1). Note:
Once the shear reaches a threshold of 50 knots, a ring is displayed. B
base reflectivity (13): Displays the current 150-mile reflectivity sweep of a site. Note:
Base reflectivity is only available for the first four elevations of the volume. N
base reflectivity 1K (113): This is the base reflectivity product, however, instead of the
pixels being shown in Azimuth-Range (AzRan) format, they are displayed in 1km by 1km
(1km
2
) format. B
base reflectivity 300 miles (14): Displays the current 300-mile reflectivity sweep of a
site. N
composite reflectivity (26): Displays the greatest reflectivity in a vertical column
regardless of height in a storm. Note: NEXRAD can scan up to a 19.5º elevation angle, so
the greatest reflectivity within this scanning volume is reported. N
composite reflectivity 1K (126): The composite reflectivity converted to a 1km by 1km
product. B