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Author Topic: Updates to Wireless Emergency Alerts  (Read 2625 times)

Pink Jazz

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Updates to Wireless Emergency Alerts
« on: August 24, 2020, 10:56:13 PM »

If you were wondering why you are not getting many Wireless Emergency Alerts for Flash Flood Warnings this year, earlier this year the NWS made a change to the activation criteria for FFWs, using a tiered system.  The three tiers are Base, Considerable, and Catastrophic threat levels.  Of the three, Base level FFWs no longer activate WEA.

Now, the NWS is proposing a tiered system for Severe Thunderstorm Warnings - Base, Considerable, and Destructive.  Of the three, those in the Destructive tier will activate WEA.  This can be useful for derechos, which are often more damaging than weak tornadoes.


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