The meteorological services for civil aviation are provided by the Meteorological Department of the Ministry of Digital Economy and SocietyInformation and Communication Technology:
Meteorological Department 4353 Sukhumvit Road
Director General
Meteorological Department
4353 Sukhumvit Road
Bangkok 10260
Thailand
Tel: +662 399 4566-75 +662 399 4566-74
Fax:
+662 399 4597-8
+662 399 4597-8
AFS: VTBBYMYX
The service is provided in accordance with the provisions contained in the following ICAO documents:
Annex 3 – Meteorological Service for International Air Navigation
Doc 7030 – Regional Supplementary Procedures
Differences to these provisions are detailed in subsection GEN 1.7.
Meteorological services are provided within Bangkok FIR .
Table GEN 3.5.3 Meteorological observations and reports
Name of Station / Location indicator | Type & frequency of observation/ automatic observation equipment | Type of MET report & Supplementary Information included | Observation System & Site (s) | Hours of operation | Climatological information |
---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 |
Bangkok/SUVARNABHUMI International VTBS |
Half hourly routine plus special observations/ Automatic: NIL |
METAR, SPECI, MET REPORT, SPECIAL TREND |
Complete observation station: 350 M from THR 01R, THR 01L, THR 19L and THR 19R |
H24 |
Climatologicaltable AVBL |
Bangkok / DON MUEANG International VTBD |
Half hourly routine plus special observations/ Automatic: NIL |
METAR, SPECI, MET REPORT, SPECIAL TREND METAR, SPECI TREND |
Complete observation station: 390 M from THR 21R and 160 M from THR 03L Complete observation station 300 M from THR 21R and THR 03L included with one RVR EQPT at the middle of RWY 21R/03L Doppler SODAR is located in the base station 300 M W of THR 21R | H24 | Climatological table AVBL |
CHIANG MAI International VTCC |
Half hourly routine plus special observations/ Automatic: NIL |
METAR, SPECI, MET REPORT, SPECIAL TREND METAR, SPECI TREND |
Complete observation station: 300 M from THR 18 and 402 M from THR 36 Complete observation station 300 M from THR 18 and THR 36 except RVR EQPT and ceilometer is located at 300 M from THR 36 only | H24 |
NIL |
CHIANGRAI / MAE FAH LUANG-CHIANG RAI International VTCT |
Hourly routine plus special observations/ Automatic: NIL |
METAR, SPECI, MET REPORT, SPECIAL TREND METAR, SPECI Suppl : NIL |
Complete observation station: 436 M from THR 03 and 445 M from THR 21 Complete observation station 300 M from THR 03 |
H24 0700-1900 |
NIL |
KHON KAEN VTUK |
Hourly routine plus special observations/ Automatic: NIL |
METAR, SPECI, MET REPORT, SPECIAL TREND |
Complete observation station: 300 M from THR 03 and THR 21 |
H24 |
NIL |
PHUKET International VTSP |
Half hourly routine plus special observations/ Automatic: NIL |
METAR, SPECI, MET REPORT, SPECIAL TREND METAR, SPECI TREND |
Complete observation station: 205 M from THR 09 and 405 M from THR 27 Complete observation station 300 M from THR 09 and THR 27 | H24 |
NIL |
RAYONG / U-TAPAO RAYONG PATTAYA International VTBU | Half hourly plus special observations |
METAR, SPECI TREND |
Complete observation station 300 M from THR 16. Ceilometer is not included. | H24 |
NIL |
SONGKHLA / HAT YAI International VTSS |
Half hourly routine plus special observations/ Automatic: NIL |
METAR, SPECI, MET REPORT, SPECIAL TREND METAR, SPECI TREND |
Complete observation station: 425 M from THR 08 and 399 M from THR 26 Complete observation station 300 M from THR 08 and THR 26 | H24 |
NIL |
UBON RATCHATHANI UBON RATCHATHANI International VTUU |
Hourly routine plus special observations/ Automatic: NIL |
METAR, SPECI, MET REPORT, SPECIAL TREND METAR, SPECI TREND |
Complete observation station: 420 M from THR 05 and 390 M from THR 23 Complete observation station 300 M from THR 23 | H24 |
NIL |
Personal briefing and consultation for flight crew members are provided for all international aerodromes.
Full meteorological documentation for current operational planning for all flights operating out of Bangkok/Suvarnabhumi International Airport, whenever possible the pilot-in-command or his representative is given personal briefing by a forecaster at the Meteorological Office, otherwise briefing may be carried out by telephone;
Area meteorological watch over Bangkok FIR with the supply of meteorological information including SIGMET information to aircraft in flight through the Bangkok ATS radio channels;
Continuous VOLMET broadcasts of aviation weather reports and SIGMET information are also included in HF/SSB broadcasts: SIGMET for Bangkok FIR, Yangon FIR; METAR/SPECI with TREND for Bangkok/Suvarnabhumi, Yangon/Mingaladon, Hanoi/Noibai, Ho Chi Minh/Tan Sonnhat, Phanom Penh, Vientiane/Wattay, Rayong/U-Tapao, Chiang Mai, Phuket, Bangkok/Donmuang; TAF for Suvarnabhumi; and for Bangkok / International Airport, Rangoon / Mingaladon International Airport, Kuala Lumpur / International Airport, Dhaka / International Airport, Chiang Mai / International Airport, U-Tapao Rayong Pattaya / International Airport and Phuket / International Airport; and
Meteorological informational for Air Traffic Service.
Meteorological documentation for current operational planning for all flights operating out of the international airports, whenever possible the pilot-in-command or his representative is given personal briefing by a forecaster at the Meteorological Watch Office, otherwise briefing may be carried out by telephone;
Meteorological information including SIGMET information to aircraft in flight through the ATS radio channels; and
Meteorological information for Air Traffic Services.
- Forecasts of upper wind and upper-air temperature and SIGWX phenomena.
- METAR or SPECI (including trend forecasts as issued in accordance with regional air navigation agreement) for the aerodromes of departure and intended landing, and for take-off, en-route and destination alternate aerodromes.
- TAF or amended TAF for the aerodromes of departure and intended landing, and for take-off, en-route.
- SIGMET information and appropriate special air-reports relevant to the whole route.
- volcanic ash and tropical cyclone advisory information relevant to the whole route.
- and, if appropriate, as determined by regional air navigation agreement, area forecasts for low-level flights in chart, and space weather advisory information relevant to the whole route. For flights of two hours’ duration or less, after a short stop or turn around, flight documentation shall be limited to the information operationally needed, as agreed between the meteorological office and the operator concerned, but in all cases it shall at least comprise information on
- METAR or SPECI (including trend forecasts as issued in accordance with regional air navigation agreement) for the aerodromes of departure and intended landing, and for take-off, en-route and destination alternate aerodromes.
- TAF or amended TAF for the aerodromes of departure and intended landing, and for take-off, en-route.
- SIGMET information and appropriate special air-reports relevant to the whole route.
- volcanic ash and tropical cyclone advisory information relevant to the whole route.
- and, if appropriate, as determined by regional air navigation agreement, area forecasts for low-level flights in chart, and space weather advisory information relevant to the whole route.
A prognostic 850 hPa chart as necessary
A prognostic 700 hPa chart and/or
A prognostic 500 hPa chart and/or
A prognostic 300 hPa chart and/or
A prognostic 200 hPa chart and/or
A prognostic 100 hPa chart as necessary
Notification from operators in respect of briefing, consultation, flight documentation and other meteorological information needed by them is normally required (reference ICAO Annex 3, 2.3). Such notification should be received as prior as possible and at least 1 hour before the expected time of departure for non-scheduled flight would be required at Bangkok Meteorological office.
NIL
Pursuant to ICAO Annex 3, 5.3.1 the making and transmission of aircraft reports (AIREP) are required at the following ATS reporting points:
ATS ROUTE | AIRCRAFT ATS / MET REPORTING POINTS IN THE BANGKOK FIR |
---|---|
ALFA 1 | BUTRA |
ALFA 464 | REGOS |
GOLF 463 | BETNO |
GOLF 473 | MAKAS |
ROMEO 588 | KAKET |
The ATS/MET reporting points in respect of routes crossing FIR are indicated on page GEN 3.5-5
Table GEN 3.5.7 VOLMET Service
Name of station | CALL SIGN Identification (EM) | Frequency | Broadcast period | Hours Of service | Aerodromes / Heliports included | Content & format of REP and FCST & Remarks |
---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 |
Bangkok | BANGKOK VOLMET J3E BANGKOK RADIO J3E |
11387 KHZ 6676 KHZ 2965 KHZ |
H+10 to H+15 and H+40 to H+45 |
2310 - 1145 Z H24 1210 - 2245 Z |
BANGKOK FIR SONGKHLA/HAT YAIBANGKOK |
SIGMET (as available) METAR, SPECI with trend METAR, SPECI with trend METAR, SPECI with trend METAR, SPECI with trend METAR, SPECI with trend METAR, SPECI with trend METAR, SPECI with trend METAR, SPECI with trend METAR, SPECI with trend METAR, SPECI with trend METAR, SPECI with trend |
YANGON FIR |
SIGMET (as available) | |||||
BANGKOK/SUVARNABHUMI |
METAR/ SPECI with TREND | |||||
YANGON/MINGALADON |
METAR/ SPECI with TREND | |||||
HANOI/NOIBAI |
METAR/ SPECI with TREND | |||||
HO CHI MINH/ TAN SON NHAT |
METAR/ SPECI with TREND | |||||
PHNOM PENH |
METAR/ SPECI with TREND | |||||
VIENTIANE/ WATTAY |
METAR/ SPECI with TREND | |||||
RAYONG/ U-TAPAO |
METAR/ SPECI with TREND | |||||
CHIANG MAI |
METAR/ SPECI with TREND | |||||
PHUKET |
METAR/ SPECI with TREND | |||||
BANGKOK / DON MUEANG |
METAR/ SPECI with TREND | |||||
BANGKOK/SUVARNABHUMI |
TAF (valid for 9 hrs) |
Table GEN 3.5.8 SIGMET service
Name of MWO / Location indicators | Hours | FIR or CTA served | Type of SIGMET / validity | Specific procedures | ATC unit served | Additional information |
---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 |
Bangkok/ VTBS | H24 | Bangkok FIR | - WS SIGMET/ not more than 4 hours - WC SIGMET/ up to 6 hours - WV SIGMET/ up to 6 hours | NIL | Bangkok ACC | NIL |
Note: WS SIGMET for phenomena other than volcanic ash cloud or tropical cyclone.
WC SIGMET for tropical cyclone.
WV SIGMET for volcanic ash.
thunderstorms
severe turbulence
severe icing
tropical cyclone
volcanic ash
tropical cyclone
thunderstorm
hail
fog
strong surface wind and gusts
tsunami
For the safety of air traffic, the meteorological authority maintains an area meteorological watch and warning service. This service consists partly of a continuous weather watch within the lower and upper FIR and the issuance of appropriate information (SIGMET) by Meteorological Watch Offices and party of the issuing of warnings for the respective aerodrome and, subject to agreement for other aerodromes by all aeronautical MET offices.
The area meteorological watch service is performed by Meteorological Watch Offices (MWOs): VTBDYMYX
The MWOs issue information in the form of SIGMET messages about the occurrence or expected occurrence of one of the following significant meteorological phenomena:
thunderstorms;
severe turbulence;
severe icing;
volcanic ash cloud; and
Tropical cyclone.
The SIGMETs are issuance in abbreviations and plain language using ICAO abbreviations and are numbered consecutively for each day commencing at 0001. Their period of validity is generally limited to less than 4 hours from the time of transmission.
The MWOs transmit SIGMETs issued by them, as well as SIGMETs of other MWOs, to the regional control centre competent for the FIR or UIR concerned.
In addition to the issuance of SIGMETs, the MWOs will inform the regional control centres about the occurrence or expected occurrence of thunderstorms, moderate icing, light to moderate hail, or moderate turbulence within FIRs concerned. The information is intended for the safety of low-level flights and is limited to the lower airspace.
Warnings for the protection of parked and moored aircraft or of other equipment at the airport are issued by all aerodrome meteorological offices, if one or several of the following phenomena are expected to occur at the airport:
squall
thunderstorm
hail
Differences from these criteria have to be agreed upon locally.
The warnings are generally issued in English and are distributed in accordance with a distribution list which has to be agreed upon locally. In order to guarantee rapid dissemination of the warnings, the distribution list to be used shall, as far as possible, contains only one recipient for the further dissemination of the warning within the group.
SIGMET information is disseminated, in addition to direct transmission, to aircraft general calls as an aeronautical or radio broadcast between 0700 until SS + 30:
by the Bangkok Area Control Centre for Bangkok FIR ; and
by the ATS units for their own area of responsibility.
The information is broadcast from the MWO concerned and repeated every half and full hour during the period of validity of the SIGMET information.
Area of widespread cumulonimbus clouds or cumulonimbus along a line (squall line) with little or no space between individual clouds. Or cumulonimbus embedded in cloud layers or obscured by haze.
The warning is designated as “storm warning” and will be issued when the mean speed of the surface wind is expected to exceed 34 KT (Beaufort Scale 8) or when gusts exceed 41 KT (Beaufort Scale 9) are expected to occur.
Table GEN 3.5.9 Other automated meteorological services
Service name | Information available | Area, route and aerodrome coverage | Telephone, telex and telefax numbers / remarks |
---|---|---|---|
1 | 2 | 3 | 4 |
NIL |
NIL |
NIL |
NIL |
NIL