Publication: Magyar Közlöny
Issue: MK-2009-104 (Year: 2009, Number: 104)
Era: 2004-2010
Section: 
Paragraph Index: 471

d) Other phenomena Dust/sand whirls (dust devils) PO Squall SQ Funnel cloud (tornado or waterspout) FC Duststorm DS Sandstorm SS 4.4.2.4 Recommendation.— In automated METAR and SPECI, in addition to the precipitation types listed under 4.4.2.3 a), the abbreviation UP should be used for unidentified precipitation when the type of precipitation cannot be identified by the automatic observing system. 4.4.2.5 Recommendation.— In local routine and special reports and in METAR and SPECI, the following characteristics of present weather phenomena, as necessary, should be reported, using their respective abbreviations and relevant criteria, as appropriate: Thunderstorm — Used to report a thunderstorm with precipitation in accordance with the templates shown in Tables A3-1 and A3-2. When thunder is heard or lightning is detected at the aerodrome during the 10-minute period preceding the time of observation but no precipitation is observed at the aerodrome, the abbreviation “TS” should be used without qualification. TS Appendix 3 Annex 3 — Meteorological Service for International Air Navigation APP 3-13 7/11/07 5/11/08 No. 74 Shower — Used to report showers in accordance with the templates shown in Tables A3-1 and A3-2. Showers observed in the vicinity of the aerodrome (see 4.4.2.6) should be reported as “VCSH” without qualification regarding type or intensity of precipitation. SH Freezing — Supercooled water droplets or precipitation, used with types of present weather phenomena in accordance with the templates shown in Tables A3-1 and A3-2. FZ Blowing — Used in accordance with the templates shown in Tables A3-1 and A3-2 with types of present weather phenomena raised by the wind to a height of 2 m (6 ft) or more above the ground. BL Low drifting — Used in accordance with the templates shown in Tables A3-1 and A3-2 with types of present weather phenomena raised by the wind to less than 2 m (6 ft) above ground level. DR Shallow — Less than 2 m (6 ft) above ground level. MI Patches — Fog patches randomly covering the aerodrome. BC Partial — A substantial part of the aerodrome covered by fog while the remainder is clear. PR 4.4.2.6 Recommendation.— In local routine and special reports and in METAR and SPECI, the relevant intensity or, as appropriate, the proximity to the aerodrome of the reported present weather phenomena should be indicated as follows: (local routine and special reports) (METAR and SPECI) Light FBL — Moderate MOD (no indication) Heavy HVY + Used with types of present weather phenomena in accordance with the templates shown in Tables A3-1 and A3-2. Light intensity should be indicated only for precipitation. Vicinity — Between approximately 8 and 16 km of the aerodrome reference point and used only in METAR and SPECI with present weather in accordance with the template shown in Table A3-2 when not reported under 4.4.2.5. VC 4.4.2.7 Recommendation.— In local routine and special reports and in METAR and SPECI:

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