190-00692-00 Rev. B
Garmin G1000 Pilot’s Guide for Piper PA32
6-9
HAZARD AVOIDANCE
NEXRAD L
IMITATIONS
NEXRAD radar images may have certain limitations:
• NEXRAD base reflectivity does not provide sufficient information to determine cloud layers or precipitation
characteristics (wet hail vs. rain). For example, it is not possible to distinguish between wet snow, wet
hail, and rain.
• NEXRAD base reflectivity is sampled at the minimum antenna elevation angle. An individual NEXRAD
site cannot depict high altitude storms at close ranges. It has no information about storms directly over
the site.
• When zoomed in to a range of 30 nm, each square block on the display represents an area of four square
kilometers. The intensity level reflected by each square represents the
highest
level of NEXRAD data
sampled within the area (Figure 6-6).
Block has an Area
of 4 sq. km
Figure 6-6 NEXRAD Data - Zoomed
NEXRAD radar images may display abnormalities:
• Ground clutter
• Strobes and spurious radar data
• Sun strobes (when the radar antenna points directly at the sun)
• Interference from buildings or mountains, which may cause shadows
• Metallic dust from military aircraft, which can cause alterations in radar scans
Summary of Contents for G1000:Piper
Page 1: ...Piper PA32...
Page 50: ...190 00692 00 Rev B Garmin G1000 Pilot s Guide for Piper PA32 1 40 SYSTEM OVERVIEW BLANK PAGE...
Page 438: ...190 00692 00 Rev B Garmin G1000 Pilot s Guide for Piper PA32 D 6 APPENDIX D BLANK PAGE...
Page 444: ...190 00692 00 Rev B Garmin G1000 Pilot s Guide for Piper PA32 F 4 APPENDIX F BLANK PAGE...
Page 450: ...Garmin G1000 Pilot s Guide for Piper PA32 190 00692 00 Rev B I 6 INDEX BLANK PAGE...