Under EASA regulations, what regulation covers meteorological reports and information for ATM/ANS?

MET.TR.200(b) within Regulation (EU) 2017/373 covers meteorological reports and other information.

What does SPECI mean in aviation weather reports?

SPECI refers to a special weather report issued when there is a significant change in meteorological conditions that could affect aviation operations.

How are wind gusts reported in a SPECI?

Wind gusts are reported with the letter 'G' followed by the maximum wind speed. For example, '05025G37KT' indicates a wind direction of 050 degrees, a wind speed of 25 knots, and gusts up to 37 knots.

What is a local special report in aviation meteorology?

A local special report shares the same location and weather conditions as a SPECI report, providing specific details relevant to the immediate vicinity, such as runway visual range.

What information is included in a SPECI report?

A SPECI report includes details such as wind direction and speed, visibility, significant weather phenomena (e.g., thunderstorms), cloud cover and height, temperature, dew point, QNH, and trend forecasts.

What visibility information is included in local special reports vs SPECI reports?

Local special reports include visibility along the runway(s), while SPECI reports include prevailing visibility with directional variations.

GM1 MET.TR.200(b) Meteorological reports and other information

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ED Decision 2022/004/R

EXAMPLE OF SPECI AND LOCAL SPECIAL REPORT

(a) Local special report (same location and weather conditions as SPECI):

SPECIAL YUDO 151115Z WIND 050/25KT MAX37 MNM10 VIS 1200M RVR RWY 05 ABV 1800M HVY TSRA CLD BKN CB 500FT T25 DP22 QNH 1008HPA TREND TEMPO TL1200 VIS 600M BECMG AT1200 VIS 8KM NSW NSC

(b) SPECI for YUDO (Donlon/International)*:

SPECI YUDO 151115Z 05025G37KT 3000 1200NE+TSRA BKN005CB 25/22 Q1008 TEMPO TL1200 0600 BECMG AT1200 8000 NSW NSC

Meaning of both reports:

Special report for Donlon/International* issued on the 15^th of the month at 11.15 UTC; surface wind direction 050 degrees; wind speed 25 knots gusting between 10 and 37 knots (minimum wind speed not to be included in SPECI); visibility 1 200 metres (along the runway(s) in the local special report); prevailing visibility 3 000 metres (in SPECI) with minimum visibility 1 200 metres to north east (directional variations to be included in SPECI only); Runway visual range above 1 800 metres on runway 05 (runway visual range not required in SPECI with prevailing visibility of 3 000 metres); thunderstorm with heavy rain; broken cumulonimbus cloud at 500 feet; air temperature 25 degrees Celsius; dew-point temperature 22 degrees Celsius; QNH 1 008 hectopascals; trend during next 2 hours; visibility (along the runway(s) in the local special report; prevailing visibility in SPECI) temporarily 600 metres from 11.15 to 12.00, becoming at 12.00 UTC visibility (along the runway(s) in the local special report; prevailing visibility in SPECI) 8 kilometres, thunderstorm ceases and nil significant weather and nil significant cloud.

* Fictitious location

Details

Source-Title: GM1 MET.TR.200(b) Meteorological reports and other information View latest amendments

Erulesid: ERULES-1963177438-3399 Compare versions

Domain: Air traffic management/Air navigation services

Activitytype: Meteorological services (MET)

Amendedby: Initial issue

Applicabilitydate: 13 June, 2022

Entryintoforcedate: 15 March, 2022

Icaoreference: Annex 3

Regulatedentity: MET provider

Regulatorysource: ED Decision 2022/004/R Navigate

Regulatorysubject: Part-MET

Typeofcontent: GM to IR (Guidance material to implementing rule)

Parentir: MET.TR.200 Meteorological reports and other information

Origin: EASA

Category: EAR