Winter Weather Advisory missing from API

[dflynn-volpe]

A WWA is not showing up in the /alert feed. Other WWAs are correctly showing up.

• https://forecast.weather.gov/wwamap/wwatxtget.php?cwa=BOX&wwa=winter%20weather%20advisory
• Not present in https://api.weather.gov/alerts
• Does correctly show up in https://nowcoast.noaa.gov/ and https://www.spc.noaa.gov/products/wwa/

In contrast, this adjacent area does have the same effective time range in terms of the start and end, although it was issued 6 hours later.

• https://forecast.weather.gov/wwamap/wwatxtget.php?cwa=gyx&wwa=winter%20weather%20advisory

Any suggestions on why the first one has been dropped from /alert, even though it should still be in effect?

Possibly related issue, unresolved:

• /alerts does not include some future events #711

[sullynole]

It's best to report issues to nco.ops@noaa.gov.

Are you looking for this alert? https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.eb7a1af1685d5f087eec6c7b21a15d0417402d52.001.1

I see it on the active feed https://api.weather.gov/alerts/active?event=Winter%20Weather%20Advisory

[dflynn-volpe]

Thanks! Yes exactly.

Ok, it does indeed show up in https://api.weather.gov/alerts/active. I think our API query has been too limited. I see now that we need to be more specific in our query.

I think we will now switch to /alerts/active for our purposes, following your feedback also on this discussion: #717

We will also look paginating through all alerts.

[jah1007]

The alerts endpoint has pagination so it will only show 500 alerts at a time regardless of their status. A link to follow to the next page is listed at the bottom of the response. The active endpoint shows only those that are active which significantly filters the results and is not paginated.

[dflynn-volpe]

Got it -- thank you, I see we made some assumptions about /alerts/ that we should have checked -- didn't realize the 500 alert limit.

Is there a way to know the total count across all pages of /alerts/, before starting to page through? That would help with the pagination.

[jah1007]

Unfortunately no, you have to keeping following links until they no longer exist.

[JJKraw]

FWIW I've always done my pulls on a state-by-state basis (e.g., https://api.weather.gov/alerts/active/area/MA) and have never run into the limit issue.

I also fetch https://api.weather.gov/alerts/active/count before any states so I know which states calls I can skip.

[dflynn-volpe]

https://api.weather.gov/alerts/active/count is super helpful. Thanks.