Example events

The following table shows some examples of weather events and their criteria.

In the table, each criterion is surrounded by square brackets. Multiple criteria or event tasks are linked with AND operators.

These are only examples. In actual use, the values must be adjusted to match the local conditions.

Example event criteria
Weather event	Example criteria
Wind shear detection	`[Shear >10 m/s/km at 0.5° EL] AND [ ... at 0.7° EL]` over an area of 3 km²
Storm turbulence detection	`[Spectrum Width >6 m/s] AND [Reflectivity >20 dBZ]` over an area of 10 km²
Hail detection	`[45 dBZ TOPS >1.5 km above freezing level]` over an area of 10 km²
Hail detection Typically used in aviation	`[CAPPI HCLASS = 90 km] [Height = 3km] [Range = 90 km] [Threshold > 6 )` over an area of 0.5 km²
Precipitation surveillance detection	`[1.5 to 14 km VIL >1 mm]` over an area of 10 km²
Flash flood detection	`[Hourly Rainfall or N-Hour Rainfall >5 mm]` over an area of 25 km²
Lightning detection	`[Lightning Positive CG and Negative CG 1 lightning strike to trigger an alert Time to clear alert after no new strikes 10 min]`
Towering cumulonimbus clouds detection Typically used in aviation	`[10 dBZ TOPS >6.0km]` over an area of 0.5 km²
Cumulonimbus clouds detection Typically used in aviation	`[10 dBZ TOPS >8.0km]` over an area of 0.5 km²
Rain shower detection Typically used in aviation	`[CAPPI R = 90 km] [Height > 3km] [Range = 90km] [Threshold > 1mm/hr)` over an area of 0.5 km²