[EAS] Strange NWS Event Code

[Adrienne Abbott]

Mike wrote: 
I recall reading the NWS at some point would assign a SAME code to every
product they have and precede all messages on the NWR with a databurst so
receivers could un-mute on a given PIL.  AFD being the Area Forecast
Discussion.  Not sure about their use in LV area other than as the twice
daily discussion (with updates interspersed).

PDS is a sub-type of product known as a Particularly Dangerous Situation.
PDS signifies and elevated threat level of both severe weather occurrence
and strength of the event(s). When those are issued, there's a pretty good
chance significant and widespread severe is expected.

The NWS has also started using a Tornado Emergency message type/product.
Not sure of its real meaning other than call attention to a significant
tornadic event in progress.  Never the less, the TOR is the official call to
action message.
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While we do get tornadoes in Nevada, we've been assured by our WFO's that
they would most likely never issue a PDS here. Our twisters are usually
EF0's and 1's, enough to rearrange the real estate and even a few mobile
homes but far from what you get in Tornado Alley. 

Adrienne Abbott
Nevada EAS Chair