Hello Jeff, Though we don't get many WMO products to motherlode from wunderground (since the the UCAR and SSEC noaaport downlinks are quite good), you can see that there is a 75 second clock offset at wunderground in the following latency images: http://www.unidata.ucar.edu/staff/chiz/latency/stats/IDS+DDPLUS_shemp.unidata.ucar.edu.gif http://www.unidata.ucar.edu/staff/chiz/latency/stats/HDS_shemp.unidata.ucar.edu.gif It is necessary for you to run NTP or ntpsync or some time updating convention that will keep the clock on ingestor.wundergound.com accurate... Other wise our latency statistics lose logical value. Thank you, -Jeff ____________________________ _____________________ Jeff Weber address@hidden Unidata Support PH:303-497-8676 NWS-COMET Case Study Library FX:303-497-8690 University Corp for Atmospheric Research 3300 Mitchell Ln http://www.unidata.ucar.edu/staff/jweber Boulder,Co 80307-3000 ________________________________________ ______________________