[Realtime-feed-users] Delayed feeds and/or events (1+ hours)

Sat Jul 12 00:09:02 UTC 2014

Eric,

As far as latency goes, I have noticed that events do not show up in the feeds 
until about a half hour later i.e. below are the last few events that I captured 
from the last hour and last day feeds just today.  I also noticed that an event 
that gets posted in the past hour feed does not stay there the full hour.  It 
appears to get deleted after about half an hour.  If it is any help, I have set 
up a test page http://ucweather.org/recenteqtst.php that shows the posted time 
and description from past hour and past day feeds using a parser with no special 
formatting and the cache time set to zero so it should be showing what is 
currently in the feeds.

Hope that helps.

Past Hour

M 4.2 - 99km ESE of Maindong, China
Jul 11 2014 at 7:41 pm EDT
DYFI? - I
  Time2014-07-11 23:05:26 UTC2014-07-12 07:05:26 +08:00 at epicenter
  Location30.896°N 86.325°E
  Depth46.61 km (28.96 mi)
Past Day
  a.. M 4.2 - 99km ESE of Maindong, China
  Jul 11 2014 at 7:41 pm EDT
  DYFI? - I
    Time2014-07-11 23:05:26 UTC2014-07-12 07:05:26 +08:00 at epicenter
    Location30.896°N 86.325°E
    Depth46.61 km (28.96 mi)
  b.. M 2.5 - 14km S of Medford, Oklahoma
  Jul 11 2014 at 5:52 pm EDT
  DYFI? - I
    Time2014-07-11 21:02:27 UTC2014-07-11 16:02:27 -05:00 at epicenter
    Location36.677°N 97.723°W
    Depth5.24 km (3.25 mi)
  c.. M 4.6 - 108km ESE of Namie, Japan
  Jul 11 2014 at 4:38 pm EDT
  DYFI? - I
    Time2014-07-11 19:59:15 UTC2014-07-12 04:59:15 +09:00 at epicenter
    Location37.190°N 142.171°E
    Depth23.35 km (14.51 mi)

From: Martinez, Eric
Sent: Wednesday, July 09, 2014 6:35 AM
To: Matt Keller
Cc: realtime-feed-users at geohazards.usgs.gov
Subject: Re: [Realtime-feed-users] Delayed feeds and/or events (1+ hours)

Hi Matt,

If you can reference a few recent, specific instances (event IDs) where the 
event skipped the past hour feed due to latency, I'd be happy to look into it. 
We have not noticed this on our end. The timely reporting of earthquake 
information is important to us, so if it is a problem on our end, we would like 
to fix it.

Regards,

Eric Martinez
Application Developer
U.S. Geological Survey
emartinez at usgs.gov

On Wed, Jul 9, 2014 at 6:42 AM, Scott Smurthwaite <smurth at mangolabs.com> wrote:

  Matt,

  I use the feed and have not noticed a lag.

  which url are you using for the json feed?

  Scott

  ----- Original Message -----
  From: "Matt Keller" <mattrk at mattrk.com>
  To: realtime-feed-users at geohazards.usgs.gov
  Sent: Wednesday, July 9, 2014 12:47:35 AM
  Subject: [Realtime-feed-users] Delayed feeds and/or events (1+ hours)

  Realtime-feed-users,

  I've noticed that for the last month or so, earthquakes are showing up later 
and later after they happen. My app focuses around Oklahoma which doesn't have 
automatic posting like California. (Not sure why, but i assume that's a $$ 
issue) Recently I've noticed that a lot of the quakes happening in Oklahoma 
aren't even hitting the "Past Hour" feed because they are taking 1+ hours to get 
posted. Since my app (A twitter bot) hits the feed regularly to check for new 
quakes, I've found the past hour feed to be the most efficient. (Much less data 
to download and parse) However, with these quakes showing up so late, I'm 
missing a lot of them. Because of this I'm probably going to have to switch to 
the "Past Day" feed so i can be sure to catch everything.

  Does anyone have any idea why this is happening? I'm not really informed 
enough to know how exactly the entire system works from the waves in ground to 
the json feed but i would love if someone else more knowledgeable might be able 
to fill in the blanks for me. Is this something that can be "fixed" or is it 
just a "that's how it is" type of situation?

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