Ahhh, Google to the rescue... CONS: Continuous. I couldn't find it in the WX abbreviations sites but, I just happened to spot it in a Google site description.
https://www.fltplan.com/abbreviations.htmhttp://www.moratech.com/aviation/metaf-abbrev.htmlAnd for others who are interested, here is the format of a PIREP (Pilot Report).
Mandatory
UA or UUA used to identify the PIREP as routine or urgent (Note: in Canada this is indicated by the prefix to the PIREP: "UACN01" for an urgent PIREP or "UACN10" for a normal PIREP)
/OV location of the PIREP, in relation to a NAVAID, an aerodrome or geographical coordinates
/TM time the PIREP was received from the pilot (UTC)
/FL flight level or altitude above sea level at the time the PIREP is filed; it is essential for turbulence and icing reports
/TP aircraft type; it is essential for turbulence and icing reports
Optional (at least one is required)
/SK sky cover
/TA ambient temperature; important for icing reports
/WV wind velocity referenced in terms of true north (ICAO), or magnetic north (in the United States)
/TB turbulence; intensity, whether it occurred in or near clouds, and duration
/IC icing
/RM remarks
/WX flight visibility and weather
https://en.wikipedia.org/wiki/Pilot_report