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[THREDDS #HLI-624912]: MRMS Base Ref through Siphon


Can you share the script you've written so far to access the data, just so that 
I can see for sure what you're working with and trying to do? I think we should 
be able to set a tolerance if we can get the data into Xarray format pretty 

Zach Bruick

> Hi,
> I'm trying to plot MRMS base ref (i.e.
> http://thredds.ucar.edu/thredds/ncss/grib/NCEP/MRMS/BaseRef/MRMS_BaseReflectivity_20191021_0100.grib2/dataset.html)
> via Python's Siphon package. It requires a datetime object as input.
> For most things (model analyses, etc.) this is just the top of the hour.
> For the MRMS it looks like it's not just an even interval of minutes, but
> also a random number of seconds after the minute.
> The first hour I tried plotting had times :10 seconds after the minute, but
> incrementing to the next hour throws an error because that next hour's
> times are apparently :13 seconds after the minute:
> Server Error (400: Requested time 2019-10-21T22:00:10Z does not intersect
> actual time range 2019-10-21T22:00:13Z - 2019-10-21T22:58:13Z)
> The question is... how can I write a script to pull a relevant time without
> knowing what the exact time is (to the second) because the exact time
> constantly fluctuates?
> Thanks,

Ticket Details
Ticket ID: HLI-624912
Department: Support Python
Priority: Normal
Status: Closed
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