Weather Alarm Austria

Instead of fixed warning thresholds, ZAMG has introduced the principle of annualities for their warning parameters. This decision was also chosen because most European NMSs also do it like this way. A yellow warning means that a situation exists only 17 times per year, which is an event which should be cautiously observed, but for which experience exists; an orange warning describes a situation which is only 3 times per year observed, therefore increased alert is necessary; a red warnng is an event which appears only 1 to 3 times per years and is therefore an extreme event.

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