tmagan Posted November 20, 2011 Share Posted November 20, 2011 I have seen this before, I just need some clarification for this, on http://weather.noaa..../cycles/09Z.TXT there are separate observations at the same time for KFRG: KFRG 200853Z 23009KT 10SM CLR 11/08 A3019 and KFRG 200853Z 23009KT 10SM CLR 11/08 A3019 RMK AO2 SLP224 T01060078 58018 Why is there one report (with an air temperature of 11oC and a dew point temperature of 8oC) and then a subsequent report after an automated remark with the air temperature and dew point temperature given in Celsius to the nearest tenth of a degree (Air temperature of 10.6oC and a dew point temperature of 7.8oC)? Link to comment Share on other sites More sharing options...
Baroclinic Zone Posted November 20, 2011 Share Posted November 20, 2011 There are a few savvy metar people on the board. One is dentrite. Maybe you could send him a pm. Link to comment Share on other sites More sharing options...
isohume Posted November 20, 2011 Share Posted November 20, 2011 The program the NWS uses for that html page brings in and shows both the standard METAR (short version) and the METAR including the remarks (RMK) section....showing more detail, etc. Temperature is reported to the nearest 1/10 of a degree C and it is always included in the RMK section of the METAR with the T group. Link to comment Share on other sites More sharing options...
famartin Posted November 20, 2011 Share Posted November 20, 2011 I have seen this before, I just need some clarification for this, on http://weather.noaa..../cycles/09Z.TXT there are separate observations at the same time for KFRG: KFRG 200853Z 23009KT 10SM CLR 11/08 A3019 and KFRG 200853Z 23009KT 10SM CLR 11/08 A3019 RMK AO2 SLP224 T01060078 58018 Why is there one report (with an air temperature of 11oC and a dew point temperature of 8oC) and then a subsequent report after an automated remark with the air temperature and dew point temperature given in Celsius to the nearest tenth of a degree (Air temperature of 10.6oC and a dew point temperature of 7.8oC)? I've noticed that quite a number of stations seem to have "full" METARs and "truncated" METARs transmitted. The full version (with the remark) is the one you should pay attention to, regardless. ASOS sets the remarks of temperature to equal the nearest whole degree Celsius, btw. 10.6C is approximately 51F and 7.8C is approximately 46F. Some other automated systems (some commercial AWOS systems and the Air Force's FMQ-19) report to the nearest tenth of a degree Celsius, regardless of whether it equals a whole degree Fahrenheit or not. Link to comment Share on other sites More sharing options...
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