Your Name
Tropical Cyclone Advisory (TCA)
Kazuhiko Nagata
Japan Meteorological Agency (JMA)
Tropical cyclones cause adverse meteorological
conditions such as strong winds, FRQ CB, areas of low pressure and storm surges.
When a tropical cyclone approaches aerodromes or flight enroutes, flights are often canceled or delayed because routes, take-off times and other variables need to be adjusted accordingly.
Impact on Aircraft Operations
Appropriate information on tropical cyclones is therefore
necessary for the safety and efficiency of aircraft operations.
TCAC - Definition
TCAC: Tropical Cyclone Advisory Center
ICAO ANNEX 3 1.1
Tropical cyclone advisory centre (TCAC).
A meteorological centre designated by regional air
navigation agreement to provide advisory information to meteorological watch offices, world area forecast centres and international OPMET databanks regarding the position, forecast direction and speed of
movement, central pressure and maximum surface
wind of tropical cyclones.
in short:
A meteorological center providing advisory information for TC SIGMET (Tropical
Cyclone Advisories, or: TCAs) to
Meteorological Watch Offices , WAFCs and
OPMET (Operational aeronautical Meteorological) Data Centers.
TCAC - Definition
TCAC - Area of Responsibility
Six RSMCs (for tropical cyclones) and TCWC Darwin are designated as ICAO TCACs.
ICAO APAC ANP http://www.icao.int/APAC/Pages/edocs.aspx
(RSMC : Regional Specialized Meteorological Center)
TCAC Tokyo
RSMC Tokyo began providing ICAO TCAC services in 1993.
60N
0N
100E 180E
Area of
Responsibility
25.6/year
（1981-2010）
10.1/year
3.0/year
4.4/year
16.4/year
from Wikipedia
http://en.wikipedia.org/wiki/Tropical_cyclone
RSMC Tokyo’s area of responsibility
Tropical Cyclones 1945 - 2016
TCA (Tropical Cyclone Advisory)
Advisory information for TC SIGMET
TCAs contain TC analysis and forecast information (+6, 12, 18, 24 hours)
Updated every six hours or as necessary.
Text and graphical format
TCA – ANNEX 3 SARPs
7.1.4 (Recommendation)
SIGMET messages concerning volcanic ash cloud and tropical cyclones should be based on advisory information provided by VAACs and TCACs, respectively, designated by
regional air navigation agreement.
TCA – ANNEX 3 SARPs
APPENDIX 2
5.1.1 The advisory information on tropical cyclones shall be issued for
tropical cyclones when the maximum of the 10-minute mean surface wind speed is expected to reach or exceed 17 m/s (34 kt) during the period
covered by the advisory.
5.1.2 The advisory information on tropical cyclones shall be in accordance with the template shown in Table A2-2.
5.1.3 Recommendation. The tropical cyclone advisory information listed in Table A2-2, when prepared in graphical format, should be as specified in Appendix 1 and issued using:
a) the portable network graphics (PNG) format; or
b) the BUFR code form, when exchanged in binary format.
Note.? The BUFR code form is contained in WMO Publication No. 306, Manual on Codes, Volume I.2, Part B -Binary Codes.
text format
graphical
format
FKPQ30 RJTD 190600 TC ADVISORY
DTG: 20151019/0600Z TCAC: TOKYO
TC: KOPPU NR: 27
PSN: N1755 E11950 MOV: N 08KT
C: 980HPA MAX WIND: 55KT
FCST PSN +6HR: 19/1200Z N1810 E12005 FCST MAX WIND +6HR: 55KT
FCST PSN +12HR: 19/1800Z N1820 E12020 FCST MAX WIND +12HR: 50KT
FCST PSN +18HR: 20/0000Z N1825 E12030 FCST MAX WIND +18HR: 50KT
FCST PSN +24HR: 20/0600Z N1835 E12040 FCST MAX WIND +24HR: 45KT
RMK: NIL
NXT MSG: 20151019/1200Z =
TCA - text format
Text TCAs are provided via AFTN (Aeronautical Fixed
Telecommunication Network).
The WMO header of text TCAs provided by TCAC Tokyo is
FKPQ30-35 RJTD.
TCA - graphical format
TCAC Tokyo began providing graphical-format TCAs on 26th Aug. 2015.
TCAs in graphical format (TCGs) contain data on gale-force wind areas and FRQ CB (frequent cumulonimbus with little or no separation) area/cloud top height in addition to the information included in text-format TCAs.
In TCGs, the following are classified as FRQ CB associated with a tropical cyclone:
a) CB within a gale-force wind area
b) CB outside a gale-force wind area but connected to CB grids within one c) CB covering a wide area (approx. 100 x 100 km)
When a TCA is issued for a tropical cyclone expected to reach tropical storm intensity within 24 hours, information on the gale-force wind area is not
provided. In such cases, information on FRQ CB areas near the center (within a 160-km radius) of the tropical cyclone is provided.
TCA - graphical format
Graphical TCAs are provided via the TCAC website
Manual of Aeronautical Meteorological Practice (ICAO Doc. 8896)
4.3.4.4 The ICAO AFTN which in principle should be used to exchange OPMET information cannot accommodate graphical advisories. Therefore, the TCAC and VAAC are expected to make their graphical advisories available through their
public Internet websites.
TCA - graphical format
TCAC Tokyo Website
http://www.data.jma.go.jp/fcd/tca/data/index.html
RSMC Tokyo – Typhoon Center
Provision of a variety of products online
- RSMC Tokyo - Typhoon Center Website
Dissemination of RSMC products via GTS
- RSMC Tropical Cyclone Advisory - SAREP
- RSMC Guidance for Forecast - RSMC Prognostic Reasoning
- RSMC Tropical Cyclone Best Track
- Tropical Cyclone Advisory for SIGMET (via AFTN)
http://www.jma.go.jp/jma/jma-eng/jma-center/rsmc-hp-pub-eg/RSMC_HP.htm
RSMC Products – TC Advisory
RSMC TC advisory (WTPQ20-25) for 3-day forecasts
Issued within 50 minutes of 00, 06, 12, 18 UTC observation times
WTPQ20 RJTD 190600
RSMC TROPICAL CYCLONE ADVISORY NAME STS 1524 KOPPU (1524)
ANALYSIS
PSTN 190600UTC 17.9N 119.8E FAIR MOVE N 08KT
PRES 980HPA MXWD 055KT GUST 080KT 50KT 30NM
30KT 240NM NORTH 180NM SOUTH FORECAST
24HF 200600UTC 18.6N 120.7E 85NM 70%
MOVE NE SLOWLY PRES 990HPA MXWD 045KT GUST 065KT
48HF 210600UTC 19.2N 121.7E 160NM 70%
MOVE ENE SLOWLY PRES 992HPA
MXWD 045KT GUST 065KT
72HF 220600UTC 20.1N 122.3E 220NM 70%
MOVE NNE SLOWLY PRES 992HPA
MXWD 045KT GUST 065KT =
RSMC Products – TC Advisory
RSMC TC advisory (WTPQ50-55) for 5-day track forecasts
Issued within 90 minutes
of 00, 06, 12, 18 UTC observation times
WTPQ50 RJTD 190600
RSMC TROPICAL CYCLONE ADVISORY NAME STS 1524 KOPPU (1524)
ANALYSIS
PSTN 190600UTC 17.9N 119.8E FAIR MOVE N 08KT
PRES 980HPA MXWD 055KT GUST 080KT 50KT 30NM
30KT 240NM NORTH 180NM SOUTH FORECAST
24HF 200600UTC 18.6N 120.7E 85NM 70%
MOVE NE SLOWLY PRES 990HPA MXWD 045KT GUST 065KT
48HF 210600UTC 19.2N 121.7E 160NM 70%
MOVE ENE SLOWLY PRES 992HPA
MXWD 045KT GUST 065KT
72HF 220600UTC 20.1N 122.3E 220NM 70%
MOVE NNE SLOWLY PRES 992HPA
MXWD 045KT GUST 065KT
96HF 230600UTC 21.7N 122.3E 240NM 70%
MOVE N SLOWLY
120HF 240600UTC 23.7N 122.3E 300NM 70%
MOVE N SLOWLY =
RSMC Tokyo - Typhoon Center Website
http://www.jma.go.jp/jma/jma-eng/jma-center/rsmc-hp-pub-eg/RSMC_HP.htm
