Jika ada perubahan pada notifikasi, berikan notifikasi baru yang merujuk pada notifikasi sebelumnya. Jangan mengubah atau menghapus notifikasi yang ada dari feed Anda. Setelah jangka waktu yang tepat seperti 24-48 jam, hapus notifikasi yang dibatalkan, diperbarui, atau habis masa berlakunya dari feed Anda.
Tangani perubahan atau masa berlaku peristiwa dengan cara berikut:
UPDATE
atauCANCEL
<msgType>
harus menyertakan setidaknya satu elemen<references>
.- Ada tiga cara untuk membatalkan acara, sesuai urutan preferensi:
- Tetapkan nilai
<expires>
dateTime
untuk setiap peristiwa. Dalam deskripsi pesan, tetapkan ekspektasi untuk notifikasi ini agar berakhir dengan sendirinya. - Munculkan pesan
<alert>
baru yang berisi<msgType>
UPDATE
,<responseType>
"All Clear"
, dan<expires>
waktu singkat di masa mendatang. - Kirim pesan
<alert>
baru dengan<msgType>
CANCEL
. Dalam elemen<references>
, lihat pemberitahuan asli untuk membatalkan.
- Tetapkan nilai
Contoh
<alert xmlns="urn:oasis:names:tc:emergency:cap:1.2">
<identifier>PAAQ-4-mg5a94</identifier>
<sender>wcatwc@noaa.gov</sender>
<sent>2013-01-05T10:58:23-00:00</sent>
<status>Actual</status>
<msgType>Update</msgType>
<source>WCATWC</source>
<scope>Public</scope>
<code>IPAWSv1.0</code>
<references>wcatwc@noaa.gov,PAAQ-1-mg5a94,2013-01-05T09:01:16-00:00
wcatwc@noaa.gov,PAAQ-2-mg5a94,2013-01-05T09:30:16-00:00 wcatwc@noaa.gov,
PAAQ-3-mg5a94,2013-01-05T10:17:31-00:00</references>
<incidents>mg5a94</incidents>
<info>
<category>Geo</category>
<event>Tsunami Cancellation</event>
<responseType>None</responseType>
<urgency>Past</urgency>
<severity>Unknown</severity>
<certainty>Unlikely</certainty>
<onset>2013-01-05T10:58:23-00:00</onset>
<expires>2013-01-05T10:58:23-00:00</expires>
<senderName>NWS West Coast/Alaska Tsunami Warning Center Palmer
AK</senderName>
<headline>The tsunami Warning is canceled for the coastal areas of
British Columbia and Alaska from the north tip of Vancouver Island,
British Columbia to Cape Fairweather, Alaska (80 miles SE of
Yakutat).</headline>
<description>The tsunami Warning is canceled for the coastal areas of
British Columbia and Alaska from the north tip of Vancouver Island,
British Columbia to Cape Fairweather, Alaska (80 miles SE of Yakutat).
- Event details: Preliminary magnitude 7.5 (Mw) earthquake / Lat:
55.300, Lon: -134.900 at 2013-01-05T08:58:20Z Tsunami cancellations
indicate the end of the damaging tsunami threat. A cancellation is
issued after an evaluation of sea level data confirms that a
destructive tsunami will not impact the alerted region, or after
tsunami levels have subsided to non-damaging levels.</description>
<instruction>Recommended Actions: Don't re-occupy hazard zones until
local emergency officials indicate it is safe to do so. This will be
the last West Coast/Alaska Tsunami Warning Center message issued for
this event. Refer to the internet site ntwc.arh.noaa.gov for more
information. </instruction>
<web>http://ntwc.arh.noaa.gov/events/PAAQ/2013/01/05/mg5a94/4/WEAK51/WEAK51.txt</web>
<parameter>
<valueName>EventLocationName</valueName>
<value>95 miles NW of Dixon Entrance, Alaska</value>
</parameter>
<parameter>
<valueName>EventPreliminaryMagnitude</valueName>
<value>7.5</value>
</parameter>
<parameter>
<valueName>EventPreliminaryMagnitudeType</valueName>
<value>Mw</value>
</parameter>
<parameter>
<valueName>EventOriginTime</valueName>
<value>2013-01-05T08:58:20-00:00</value>
</parameter>
<parameter>
<valueName>EventDepth</valueName>
<value>5 kilometers</value>
</parameter>
<parameter>
<valueName>EventLatLon</valueName>
<value>55.300,-134.900 0.000</value>
</parameter>
<parameter>
<valueName>VTEC</valueName>
<value>/O.CAN.PAAQ.TS.W.0001.000000T0000Z-000000T0000Z/</value>
</parameter>
<parameter>
<valueName>NWSUGC</valueName>
<value>BCZ220-210-922-912-921-911-110-AKZ026>029-023-024-019>
022-025-051258-</value>
</parameter>
<parameter>
<valueName>ProductDefinition</valueName>
<value>Tsunami cancellations indicate the end of the damaging tsunami
threat. A cancellation is issued after an evaluation of sea level
data confirms that a destructive tsunami won't impact the alerted
region, or after tsunami levels have subsided to non-damaging
levels.</value>
</parameter>
<parameter>
<valueName>WEAK51</valueName>
<value>Public Tsunami Warnings, Watches, and Advisories for AK, BC,
and US West Coast</value>
</parameter>
<parameter>
<valueName>EAS-ORG</valueName>
<value>WXR</value>
</parameter>
<resource>
<resourceDesc>Event Data as a JSON document</resourceDesc>
<mimeType>application/json</mimeType>
<uri>http://ntwc.arh.noaa.gov/events/PAAQ/2013/01/05/mg5a94/4/WEAK51/PAAQ.json</uri>
</resource>
<area>
<areaDesc>95 miles NW of Dixon Entrance, Alaska</areaDesc>
<circle>55.3,-134.9 0.0</circle>
</area>
</info>
<Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
...
</Signature>
</alert>