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PRIMUS
r
880
Digital
W
eather
Radar
System
A28-1146-102-00
Radar Facts
5-36
DISPLAY
LEVEL
RAINFALL
RATE
MM/HR
RAINFALL
RATE
IN./HR
4
(MAGENTA)
GREATER
THAN
50
GREATER
THAN
2
3
(RED)
2
(YELLOW)
12 -50 0.5- 2
4 -12 0.17 -0.5
232 >300 >300
130 190 230
90 130
160
1
(GREEN)
1 -4 0.04 -0.17
0
(BLACK)
LESS THAN
1
LESS THAN
0.04
55 80 100
- - -
MAXIMUM*
CALIBRATED
RANGE (NM)
12-IN
FLAT-PLATE
MAXIMUM*
CALIBRATED
RANGE (NM)
18-IN
FLAT-PLATE
MAXIMUM*
CALIBRATED
RANGE (NM)
24-IN
FLAT-PLATE
EXTREME 6
GREATER
THAN
125
(5)
INTENSE 5
50 -125
(2 - 5)
VERY
STRONG
4
25 -50
(1 - 2)
STRONG 3
12 -25
(0.5 -1)
MODERATE
2
2.5 -12
(0.1 -0.5)
WEAK 1
0.25 -2.5
(0.01 -0.1)
STORM
CATEGORY
VIP
LEVEL
RAINFALL
RATE-MM/HR
(IN./HR)
VIDEO INTEGRATED PROCESSOR
CATEGORIZATIONS
REFLECTIVITY 300 NM
THE THRESHOLD FOR THE VIP LEVELS CAN BE REALIZED WHEN THERE IS NO INTERVENING RADAR
SIGNAL ATTENUATION. WITH RCT SELECTED, RCT BLUE FIELD OCCURS WHEN THE MINIMUM RED
LEVEL DETECTED IS BELOW SYSTEM SENSITIVITY.
*
AD-17926-R5@
Display Levels Related to VIP Levels (Typical)
Table 5-11
NOTE: The radar is calibrated for convective weather.
Stratiform storms at or near the freezing level can show high
reflectivity. Do not penetrate such targets.