United States version may also include a weather (/WX) group, while other countries may use other groups and measurements. Examples of PIREPs These examples are taken from the Canadian MANOBS (Manual of Surface Weather Observations) published by Environment Canada. PIREP: UACN10 CYQT 192128 YZ WG UA /OV YSP 090025 /TM 2120 /FL050 /TP BE99 /SK 020BKN040 110OVC /TA -14 /WV 030045 /TB MDT CAT 060-080 /IC LGT RIME 020-040 /RM LGT FZRA INC Decoded as: Routine upper air report from Thunder Bay issued at 2128 UTC on the 19th of the month YZ is Toronto and WG is Winnipeg: these are the Flight Information Regions where the PIREP was issued Aircraft observation was east (090 degrees radial) of the Marathon VOR/DME at 2120 UTC. The aircraft was at and is a Beech 99. The clouds were broken at AMSL with tops at and an overcast layer at AMSL. The temperature is −14 degrees Celsius and the winds are from the northeast (030 degrees true) at . There is moderate clear air turbulence between and . There is light rime icing between and . Note this would indicate that the icing is picked up in the cloud. The remarks section says that light freezing rain was encountered in the cloud. PIREP UACN10 CYXU 032133 YZ UA /OV YUX 09010 /TM 2120 /FL030 /TP C172 /TB MDT /RM MDT TURB BLO 050 CYKF CYXU Decoded as: Routine message from London, issued at 2133 UTC on the 3rd of the month The Flight Information Region is Toronto The aircraft was east (090 degrees radial) of the London VOR at 2120 UTC. The aircraft was at and was a Cessna 172. The pilot reported moderate turbulence. The remarks says that the turbulence was below between Kitchener/Waterloo and London. Soliciting PIREPs In the US, air traffic controllers are required to solicit PIREPs upon request of other facilities or pilots, or when any of the following conditions exists or is forecast in their area: Ceilings at or below Visibility at or less than Thunderstorms and related phenomena Turbulence of moderate degree or greater Icing of light degree or greater Wind shear Volcanic ash clouds At least once hourly, terminal controllers must obtain a descent/climb-out PIREP, including cloud information and other related phenomena. See also AMDAR – aircraft meteorological data relay, a WMO FM-42 code for an automatic meteorological report from an aircraft ACARS – ARINC Communications