VIP levels

In an early form of weather radar (before the 88-D network), a Digital Video Integrator Processor binned the image data into six categories, called VIP levels:

VIP
level
dBZ Precipitation Description Rainfall Rate (per hour)
Stratiform Convective
inches mm inches mm
6 >57 Very heavy rain and hail;
large hail possible
≥7.10 ≥180
5 50 – 57 Very heavy rain; hail possible 4.50 – 7.09 114 – 179
4 44 – 50 Heavy rain 2.20 – 4.49 56 – 113
3 38 – 44 Moderate to heavy rain 0.50 – 1.00 13 – 25 1.10 – 2.20 28 – 55
2 30 – 38 Light to moderate rain 0.10 – 0.50 3 – 12 0.20 – 1.10 5 – 27
1 18 – 30 Light precipitation 0 – 0.10 0 – 2 0.05 – 0.19 1 – 4

NOAA.
Glossary: V's.
www.srh.noaa.gov/jetstream/append/glossary_v.htm
Retrieved 18 January 2010.

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