PRIMUSr 880 Digital Weather Radar System
| 100% |
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| 1/4”HAIL |
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| 80% |
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FREQUENCY | 60% |
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RELATIVE | 40% | 1/2”HAIL |
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| 20% |
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| 3/4”AND LAGER HAIL |
| 0% | LEVEL 3 | LEVEL 4 |
| LEVEL 2 | ||
| YELLOW | RED | MAGENTA |
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| AD- 15358- R1@ |
Hail Size Probability
Figure 5- 35
Spotting Hail
As previously stated, dry hail is a poor reflector, and therefore generates deceptively weak or absent radar returns. When flying above the freezing level, hail can be expected in regions above and around wet storm cells found at lower altitudes. The hail is carried up to the tropopause by strong vertical winds inside the storm. In large storms, these winds can easily exceed 200 kt, making them very dangerous. Since the core of such a storm is very turbulent, but largely icy, the red core on the radar display is weak or absent and highly mobile. The storm core can be expected to change shapes with each antenna scan.
Radar Facts | A28- 1146- 102- 00 |
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