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Pulling Hourly or Higher-Resolution
For most high-temporal-resolution data requests, Mesonet
data will be easiest to retrieve and most appropriate.
However, if weather type information, visibility, or
freezing precipitation information is required,
National Weather Service ASOS observations will be best
suited. Also, an NWS station may be closer to the point of
needed information than a Mesonet station. Therefore, be
sure to check station
locations in order to determine the best source.
Mesonet data: preceding month or earlier (back to January
- Use the mesotext program on the cig server,
/mesodata drive, /mesodata/ directory (NOT a web page -
run through a command-prompt window).
- For an extended time period, use more coarse time
interval (i.e., 15 minutes, 60 minutes), but if only a
short time is needed (i.e., time of an accident) use
- Select the time zone appropriate for the date
- Pull the nearest Mesonet station (see Station
Locations Guide); if the location is in between
sites, pull the nearest two or three if necessary.
Sometimes a federal (NWS / ASOS) observing site may be
- Output is written to the same mesodata/ directory, in
the file you specify (helpful tip: it is easiest to end a
filename with .txt).
- The program will caculate the data retrieval charge
- Print or e-mail the listing to the client.
Mesonet data: current month - mesotext will not work. You
will need to use the Mesonet
data retrieval webpage to pull *.mts files for selected
stations and then the Mesodata PC program.
- You will need to select the needed date(s) plus one
day because the data files will be returned in UTC time
(ending 6 or 7 pm).
- Choose a 15-minute increment or higher
(MTS files are not available at 5-minute
- Choose File Format as "1 Station, All Times" and
MTS Listing. You can select multiple stations by using
- Save the file returned from the web request to the
cig /mesodata disk, /mesodata/Mesodata PC/raw/ directory;
unzip the files.
- Run the mesodata program (in the
mesodata/Mesodata PC/ directory), same as mesotext
Meteograms - images of time series for Mesonet
- Log onto CIG and type bash
- cd /ocsdata/processes/mesonet/meteograms
- Generate images using meteomaker.pl --enddate
YYYY-MM-DD --endtime HH:MN --stid XXXX --tz CST --root
NAME (XXXX=Mesonet site id, tz is time zone -
CST, CDT, GMT, and NAME is the filename root -
whatever you want to call it)
- Output goes to the cig webserver, http://cig.mesonet.org/tmpdata/
(password-protected; use the nidstmp password)
- download the files to your PC (ftp to cig
/home/httpd/htdocs/tmpdata/ or display them on the
webpage and 'save as').
NWS / ASOS reports -
- Use one of the options from Plymouth State University
- (a) Meteograms
/ Text listing for a single station, date (choose
"Decoded Obs Text Listing")
- (b) Surface
Data Text Listing for a single time, all stations
in a selected state (choose "Decoded Obs")
- Be sure to print out or copy the guide, "Decoded
Text Summaries" from the website.
- You may also retrieve METAR-encoded observations,
which may include additional comments not listed in
the decoded report.
- For areas in Eastern Oklahoma, you can also try the
- The NCDC
Hourly observations website also provides hourly
listings, but is more cumbersome
- select "U.S. - Select by Station (Uneditied
Local Climatological Data)". Follow the steps and
choose the "Unedited LCD Hourly Obs" option.
- If these data sources do not have the needed data,
OCS has archives of METAR-encoded observations and
hourly observations from Earthinfo on CD.