Re: NOAA/NWS interpretation of < effective> and <expires> [SEC=UNCLASSIF

UNCLASSIFIED

Profiles SC,

After reviewing the NWS inputs from Bob Bunge and Mike Gerber regarding the <effective>, <onset>, <expires> topics, I can see that CAP-AU should use:

a) <onset> to designate the expected time for the beginning of the event;

b) <effective> to be explicit that the information in the message is effective when it is sent, so the <effective> and <sent> will probably be the same value; and

c) <expires> to designate when the information in the message should no longer be used.

Therefore …

I believe the CAP-AU entries for <expires> remain valid so no changes are required for that sub-element and I wish that sub-element USE to remain as REQUIRED. I see no need to insert anything for <onset> because there is no deviation from the use stated in OASIS CAPv1.2. I agree that <effective> SHOULD be interpreted to mean that the information in the message is effective when it is sent, which does not deviate from what OASIS CAP v1.2 intended, so I propose the following changes to the CAP-AU Profile:

1) Change the TYPE for <effective> to OPTIONAL.

2) Change <effective> Note 1) to the following: 1) Messages are considered to be effective when sent, so if the <effective> sub-element is used it SHOULD be the same value as <sent>.

3) Remove <effective> Note 4) as it does not add any value to the document.

4) Change <effective> Example A to include a <sent> line between <alert> and <info> lines as per following (which explicitly highlights that <effective> is to be the same as <sent>) :

<alert>

…

…

<info>

…

<effective>2011-05-13T07:00:00+10:00

</effective>

5) Change <effective> Example B to include a <sent> line between <alert> and <info> lines as per following:

<alert>

…

…

<info>

…

<effective>2011-05-12T21:00:00-00:00

</effective>

Greg Trott

CAP-AU Project Manager

Australian Government Attorney-General's Department

From: emergency@lists.oasis-open.org [mailto:emergency@lists.oasis-open.org] On Behalf Of Robert Bunge
Sent: Wednesday, 1 February 2012 5:44 AM
To: emergency@lists.oasis-open.org
Subject: [emergency] NOAA/NWS interpretation of < effective> and <expires>

All,

The NWS interpretation of <effective> and <expires> as documented in the NWS CAP wiki

(https://wiki.citizen.apps.gov/nws_developers/index.php/Category:Common_Alerting_Protocol)

may not be consistent with the Australian profile.

We noticed there is no <onset> tag in the AU profile. However, NWS is making every effort to differentiate between the effective time (<effective>) of the information in the alert message, the expected time of the beginning of the event (<onset>), the time at which the information in the message should no longer be used (<expires>), and the time at which the hazard conditions of the subject event are no longer expected (optional parameter we've added called <eventEndingTime> and wish to propose as standard for CAP v2.0).

Mike Gerber will be speaking more about this at the Wednesday meeting.

Bob

emergency-cap-profiles message