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Products and Services Notice

JTWC Products and Services Notice

This is a U.S. government website. JTWC products on this website are intended for use by U.S. government agencies. Please consult your national meteorological agency or the appropriate World Meteorological Organization Regional Specialized Meteorological Center for tropical cyclone products pertinent to your country, region and/or local area.

The information on this site is considered public information unless specifically annotated and may be freely distributed or copied. This information should not be modified in content and then presented as copyrighted material. As required by 17 U.S. Code section 403, third parties producing works consisting predominantly of the material appearing in NMFC/JTWC web sites must provide notice in the subsequent published material that there is NMFC/JTWC incorporated material and data are not subject to copyright protection and can be freely used by the public.

Although every attempt is made to keep products and data current, before using information obtained from this server, special attention should be given to the date and time of the data and products being displayed.

Software and data products on this site are intended primarily to provide guidance to meteorologists, oceanographers and other air-ocean environmental specialists. The software and/or products are only one of many possible sources of information that trained personnel should consult in analyzing and predicting the air-ocean environment.

This server links to other information systems providing weather-related information that are operated by other government organizations, commercial firms, educational institutions, and private parties. NPMOC/JTWC has no control of and bears no responsibility for information on those systems that may be objectionable, untimely, inaccurate, unreliable, or which may not conform to Department of the Defense policies. These links are offered for convenience and for informational purposes. Their inclusion here does not constitute an endorsement or an approval by the Department of the Navy of any of the products, services, or opinion of the external providers.

JTWC Products

 ABIO10 PGTW Significant Weather Advisory, Indian Ocean
Issued daily at 1800 GMT

ABPW10 PGTW Significant Weather Advisory, Western Pacific Ocean
Issued daily at 0600 GMT

WTPN21-26 PGTW Tropical Cyclone Formation Alert, Northwest Pacific Ocean
Issued as required when tropical cyclone formation is expected in 12-24 hours

WTPN31-36 PGTW Tropical Cyclone Warning, Northwest Pacific Ocean
Issued at 0300, 0900, 1500, 2100 GMT daily on active tropical cyclones

WDPN31-36 PGTW Prognostic Reasoning Bulletin, Northwest Pacific Ocean
Issued at 0300 and 1500 GMT daily on active tropical cyclones

WTIO21-25 PGTW Tropical Cyclone Formation Alert, North Indian Ocean
Issued as required when TC formation is expected in 12-24 hours

WTIO31-35 PGTW Tropical Cyclone Warning, North Indian Ocean
Issued at 0300, 0900, 1500, 2100 GMT daily on active tropical cyclones

WTPS21-25 PGTW Tropical Cyclone Formation Alert, Southwest Pacific Ocean
Issued as required when TC formation is expected in 12-24 hours

WTPS31-35 PGTW Tropical Cyclone Warning, Southwest Pacific Ocean
Issued at 0300 and 1500 GMT or 0900 and 2100 GMT daily on active tropical cyclones

WTXS21-26 PGTW Tropical Cyclone Formation Alert, South Indian Ocean
Issued as required when TC formation is expected in 12-24 hours

WTXS31-36 PGTW Tropical Cyclone Warning, South Indian Ocean
Issued at 0300 and 1500 GMT or 0900 and 2100 GMT daily on active tropical cyclones

WTPN21-25 PHNC Tropical Cyclone Formation Alert, Northeast Pacific Ocean
Issued as required when TC formation is expected in 12-24 hours

WTPN31-35 PHNC Tropical Cyclone Warning, Northeast Pacific Ocean
Issued at 0300, 0900, 1500 and 2100 GMT daily on active tropical cyclones

WTPS21-25 PHNC Tropical Cyclone Formation Alert, Southeast Pacific Ocean
Issued as required when TC formation is expected in 12-24 hours

WTPS31-35 PHNC Tropical Cyclone Warning, Southeast Pacific Ocean
Issued at 0300 and 1500 GMT or 0900 and 2100 GMT daily on active tropical cyclones

TPPN10-19 PGTW Tropical Cyclone Position and Intensity, Northwest Pacific Ocean
Issued daily at 0000, 0300, 0600, 0900, 1200, 1500, 1800, 2100 GMT on suspect areas
and active tropical cyclones
TPIO10-19 PGTW Tropical Cyclone Position and Intensity, North Indian Ocean
Issued daily at 0000, 0300, 0600, 0900, 1200, 1500, 1800, 2100 GMT on suspect areas
and active tropical cyclones

TPPS10-19 PGTW Tropical Cyclone Position and Intensity, Southwest Pacific Ocean
Issued daily at 0000, 0300, 0600, 0900, 1200, 1500, 1800, 2100 GMT on suspect areas
and active tropical cyclones

TPXS10-19 PGTW Tropical Cyclone Position and Intensity, Southern Indian Ocean
Issued daily at 0000, 0300, 0600, 0900, 1200, 1500, 1800, 2100 GMT on suspect areas
and active tropical cyclones

TPPZ01-05 PGTW Tropical Cyclone Position and Intensity, Central North Pacific Ocean
Issued daily at 0000, 0300, 0600, 0900, 1200, 1500, 1800, 2100 GMT on suspect areas
and active tropical cyclones