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[aprssig] APRS return to basics (DR) (new images)

Lynn W. Deffenbaugh (Mr) ldeffenb at homeside.to
Thu May 24 02:43:13 UTC 2012


On 5/23/2012 9:45 PM, Lynn W. Deffenbaugh (Mr) wrote:
> On 5/23/2012 9:35 PM, Keith VE7GDH wrote:
>> Is DR actually giving you any more information about the storm?
>
> Some AE5PL-WX-injected NWS objects include an initial position along 
> with a speed and heading.  APRSISCE/32 will draw the storm in the 
> original location and move a dead reckoned copy of the storm symbol 
> according to the speed and heading until the expiration time of the 
> event has been reached.  It's rather humorous at times to see the 
> storm moving completely outside the highlighted area which tells me 
> that the NWS office doesn't really check such things.

Kind of like this one issued by LBF, a Severe Thunderstorm Warning, at 
24 02:27z through 24 03:15z, a duration of 48 minutes.  They put the 
initial coordinate at the top center of the highlighted area and then 
said that the storm center was moving ENE at 21mph.  Well, in another 30 
minutes, that storm's going to be well out of the alerted area...



Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

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