Can anyone explain to me what happened here?

[bbowers]

http://www.wunderground.com/weatherstation/WXDailyHistory.asp?ID=KNYALBAN12&graphspan=day&month=2&day=3&year=2011


Regarding the graphs.... strange... Not sure what caused this. Any ideas?

[Scalphunter]

 I would ticket WU and as them  seem like they had software glitch.

[PaulMy]

Is it possible the data was uploaded twice, once live and again from logged data?  I've done that when I manually uploaded old data from WL.  Seems like the lower temps are on the 5 minute interval.

Paul

[SlowModem]

Is it possible the data was uploaded twice, once live and again from logged data?  I've done that when I manually uploaded old data from WL.  Seems like the lower temps are on the 5 minute interval.

Paul

I thought it might be something like that, too.  I had something similar happen when I accidentally had two stations uploading to CWOP at the same time.

[DJMWX86]

Wow maybe it got the hiccups? Shure your measuring weather and not seismic activity? lol. Maybe shoot WU an email and show them that? Has that happened before or is this the first time?

[bbowers]

First time I've noticed it... I have a ticket open with them... no response as of yet.

[saratogaWX]

It looks like there may be two different weather software packages using your WU stationid to report and that's causing the sawtooth graphs

00:39    -3.9 °C    -6.2 °C    1005.0hPa    NW    4.8km/h    4.8km/h    84%    0.0mm    ---
00:40    -5.8 °C    -10.4 °C    1016.8hPa    NW    9.7km/h    19.3km/h    70%    0.0mm    ---
00:45    -3.9 °C    -6.2 °C    1005.0hPa    NW    4.8km/h    4.8km/h    84%    0.0mm    ---
00:47    -3.9 °C    -6.2 °C    1005.0hPa    NW    4.8km/h    4.8km/h    84%    0.0mm    ---
00:50    -6.1 °C    -10.8 °C    1017.2hPa    West    9.7km/h    24.1km/h    69%    0.0mm    ---
00:51    -3.9 °C    -6.2 °C    1005.0hPa    NW    4.8km/h    4.8km/h    84%    0.0mm    ---
00:52    -3.9 °C    -6.2 °C    1005.0hPa    NW    4.8km/h    4.8km/h    84%    0.0mm    ---
00:57    -3.9 °C    -6.2 °C    1005.0hPa    NW    4.8km/h    4.8km/h    84%    0.0mm    ---
00:58    -3.9 °C    -6.2 °C    1005.0hPa    NW    4.8km/h    4.8km/h    84%    0.0mm    ---
00:59    -3.9 °C    -6.2 °C    1005.0hPa    NW    4.8km/h    4.8km/h    84%    0.0mm    ---
01:00    -6.2 °C    -11.0 °C    1017.5hPa    West    4.8km/h    12.9km/h    69%    0.0mm    ---
01:03    -3.9 °C    -6.2 °C    1005.0hPa    NW    4.8km/h    4.8km/h    84%    0.0mm    ---
01:06    -3.9 °C    -6.2 °C    1005.0hPa    NW    4.8km/h    4.8km/h    84%    0.0mm    ---
01:08    -3.9 °C    -6.2 °C    1005.0hPa    NW    4.8km/h    4.8km/h    84%    0.0mm    ---
01:09    -3.9 °C    -6.2 °C    1005.0hPa    NW    4.8km/h    4.8km/h    84%    0.0mm    ---
01:10    -3.9 °C    -6.2 °C    1005.0hPa    NW    4.8km/h    4.8km/h    84%    0.0mm    ---
01:15    -3.9 °C    -6.2 °C    1005.0hPa    NW    4.8km/h    4.8km/h    84%    0.0mm    ---
01:16    -3.9 °C    -6.2 °C    1005.0hPa    NW    4.8km/h    4.8km/h    84%    0.0mm    ---
01:20    -6.6 °C    -11.6 °C    1018.5hPa    NW    6.4km/h    12.9km/h    68%    0.0mm    ---
01:21    -3.9 °C    -6.2 °C    1005.0hPa    NW    4.8km/h    4.8km/h    84%    0.0mm    ---
01:23    -3.9 °C    -6.2 °C    1005.0hPa    NW    4.8km/h    4.8km/h    84%    0.0mm    ---
01:24    -3.9 °C    -6.2 °C    1005.0hPa    NW    4.8km/h    4.8km/h    84%    0.0mm    ---
01:25    -6.8 °C    -11.7 °C    1018.5hPa    NW    6.4km/h    14.5km/h    68%    0.0mm    ---
01:29    -3.9 °C    -6.2 °C    1005.0hPa    NW    4.8km/h    4.8km/h    84%    0.0mm    ---

Suspect reports highlighted above.

Best regards,
Ken

[bbowers]

I dunno... I'll check. Pretty sure that's all I have running on that PC. I wasn't even home at that time.

[bbowers]

Their reply was asking about the time on the station vs the computer... they are the same. I can either take forever myself to manually remove all the offending entries, keep it how it is, or wipe the day entirely from their end.... suggestions? Here's a hint... I'm not going to waste weeks deleting individual entries via the web site.

[LFWX]

I've had this happen a few times when VWS started sending the same value all day. When I restarted VWS, it uploaded the real data for the day at 1 minute intervals (my archive interval), but Weather Underground didn't let it overwrite the 5 minute interval data which had been recorded earlier.
I had to manually delete the erroneous data - one entry at a time (something I wish they would change)