gov.noaa.nodc:OSPO-Dvorak eng utf8 series NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NOAA Contact Information Information for contacts at NCEI. information custodian 2026-07-09T13:28:34Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/National Environmental Satellite, Data, and Information Service (NESDIS)/Office of Satellite and Product Operations (OSPO) Satellite Analysis Branch (SAB) Global Tropical Cyclone Position and Dvorak Intensity Estimates 2025-08-20 publication 2026-02-12 revision 2025-08-19 creation International DOI Foundation (IDF) 10.25921/36nh-c534 NOAA National Centers for Environmental Information gov.noaa.nodc:OSPO-Dvorak NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information publisher Michael Turk NOAA Office of Satellite and Product Operations (OSPO) michael.turk@noaa.gov https://ospo.noaa.gov/ HTTPS NOAA Office of Satellite and Product Operations (OSPO) website Institution web page information resourceProvider Paul Lee NOAA Office of Satellite and Product Operations (OSPO) paul.lee@noaa.gov https://ospo.noaa.gov/ HTTPS NOAA Office of Satellite and Product Operations (OSPO) website Institution web page information resourceProvider NOAA National Centers for Environmental Information (NCEI) resourceProvider NOAA Office of Satellite and Product Operations (OSPO) https://ospo.noaa.gov/ HTTPS NOAA Office of Satellite and Product Operations (OSPO) website Institution web page information resourceProvider Emily Smail NOAA Office of Satellite and Product Operations (OSPO) emily.smail@noaa.gov https://ospo.noaa.gov/ HTTPS NOAA Office of Satellite and Product Operations (OSPO) website Institution web page information pointOfContact Paul Lee NOAA Office of Satellite and Product Operations (OSPO) paul.lee@noaa.gov https://ospo.noaa.gov/ HTTPS NOAA Office of Satellite and Product Operations (OSPO) website Institution web page information principalInvestigator Kyle Hosley NOAA Office of Satellite and Product Operations (OSPO) kyle.hosley@noaa.gov https://ospo.noaa.gov/ HTTPS NOAA Office of Satellite and Product Operations (OSPO) website Institution web page information collaborator NOAA/NESDIS/OSPO Satellite Analysis Branch https://ospo.noaa.gov/ HTTPS NOAA Office of Satellite and Product Operations (OSPO) website Institution web page information author tableDigital The NOAA/National Environmental Satellite, Data, and Information Service (NESDIS)/Office of Satellite and Product Operations (OSPO) Satellite Analysis Branch (SAB) provides position and intensity estimates derived from the Dvorak Technique (DT) for tropical disturbances across the globe every 6 hours. This dataset provides SAB's Tropical Cyclone Analysis Worksheet for each system that was classified. This collection is roughly organized by year with the exception of the earlier start of the tropical storm season in the Southern Hemisphere. Specifically: 20111202 to 20121231 - accession 0307187 20121011 to 20131231 - accession 0307280 20131021 to 20141231 - accession 0307707 20141114 to 20151231 - accession 0307281 20150801 to 20161231 - accession 0307817 20160714 to 20171231 - accession 0307816 20171120 to 20181231 - accession 0307803 20180913 to 20191231 - accession 0307804 20191122 to 20201231 - accession 0307814 20200623 to 20201231 - accession 0308015 20201209 to 20211231 - accession 0308220 20211209 to 20221231 - accession 0308221 20220726 to 20231231 - accession 0309781 20231019 to 20250101 - accession 0309700 20241001 to 20260101 - accession 0311435 SAB has provided these estimates across the globe since 1974. They have been used Regional Specialized Meteorological Centers (RSMC), most notably the National Hurricane Center, the Dept of Defense Joint Typhoon Warning Center and other Tropical Cyclone Warning Centers and meteorological agencies in the creation of tropical cyclone forecasts and warnings. completed historicalArchive NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information pointOfContact asNeeded https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:OSPO-Dvorak Preview graphic PNG 0307187 0307280 0307281 0307707 0307803 0307804 0307814 0307816 0307817 0308015 0308220 0308221 0309700 0309781 0311435 NCEI ACCESSION NUMBER 2026-01-06 publication Tropical Cyclones theme NODC DATA TYPES THESAURUS satellite sensor - visible to infrared visual analysis instrument NODC INSTRUMENT TYPES THESAURUS Dvorak technique meteorological remote sensing satellite data theme NODC OBSERVATION TYPES THESAURUS Earth Observation Satellites platform NODC PLATFORM NAMES THESAURUS NOAA National Centers for Environmental Information NOAA Office of Satellite and Product Operations dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS World-Wide Distribution place NODC SEA AREA NAMES THESAURUS meteorology theme WMO_CategoryCode 2012-09-15 publication DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/OSPO > Office of Satellite and Product Operations, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian SAB Tropical Cyclone Position and Dvorak Intenisty Estimates Global SAB Tropical Cyclone Position and Dvorak Intensity Estimates Global project Provider Project Names EARTH SCIENCE > ATMOSPHERE > WEATHER EVENTS > TROPICAL CYCLONES theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Dvorak Current Intensity Tropical Cyclone Position and Dvorak Intensity theme Provider Keywords Geostationary, IR and Visible Longwave infrared and visible geostationary imagery instrument Provider Instruments SATELLITES > SATELLITES platform Global Change Master Directory (GCMD) Platform Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian GEOGRAPHIC REGION > GLOBAL OCEAN place Global Change Master Directory (GCMD) Location Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Global place Provider Place Names 6TK74N 7WDJFU 9C25KC AH47G8 B7ELEX C70HYR D8391B F5X5FC FDBTGH G8B1XL H5P8R6 U9K7AA WFXFDK WTWW4M XNNDXM Send2NCEI Submission Package ID accessLevel: public otherRestrictions Cite as: NOAA/NESDIS/OSPO Satellite Analysis Branch (2025). NOAA/National Environmental Satellite, Data, and Information Service (NESDIS)/Office of Satellite and Product Operations (OSPO) Satellite Analysis Branch (SAB) Global Tropical Cyclone Position and Dvorak Intensity Estimates. [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/36nh-c534. Accessed [date]. Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose. license This dataset has been dedicated to the public domain under the Creative Commons CC0 1.0 Universal (CC0 1.0) Public Domain Dedication. SPDX License: Creative Commons Zero v1.0 Universal (CC0-1.0) Velden, C., Harper, B., Wells, F., Beven, J. L., Zehr, R., Olander, T., Mayfield, M., Guard, C. “CHIP,” Lander, M., Edson, R., Avila, L., Burton, A., Turk, M., Kikuchi, A., Christian, A., Caroff, P., & McCrone, P. (2006). The Dvorak Tropical Cyclone Intensity Estimation Technique: A Satellite-Based Method that Has Endured for over 30 Years. Bulletin of the American Meteorological Society, 87(9), 1195–1210. https://doi.org/10.1175/bams-87-9-1195 2006-09 publication International DOI Foundation (IDF) https://doi.org/10.1175/bams-87-9-1195 https://doi.org/10.1175/bams-87-9-1195 HTTPS https://doi.org/10.1175/bams-87-9-1195 related journal article information Velden, Christopher author Harper, Bruce author Wells, Frank author Beven, John L. author Zehr, Ray author Olander, Timothy author Mayfield, Max author Guard, Charles “CHIP” author Lander, Mark author Edson, Roger author Avila, Lixion author Burton, Andrew author Turk, Mike author Kikuchi, Akihiro author Christian, Adam author Caroff, Philippe author McCrone, Paul author American Meteorological Society publisher documentDigital Bull. Amer. Meteor. Soc. 87(9) ISSN 0003-0007, ISSN 1520-0477, pp. 1195-1210 crossReference sciencePaper eng; USA utf8 environment oceans climatologyMeteorologyAtmosphere -180 180 -90 90 2011-12-02 2026-01-01 NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov pointOfContact In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. JPEG PDF XLSX 1951.716 https://doi.org/10.25921/36nh-c534 HTTPS Web browser NCEI Dataset Landing Page Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/metadata/granule/geoportal/?from=0&size=10&esdsl=%7B%22query%22%3A%7B%22bool%22%3A%7B%22must%22%3A%5B%7B%22query_string%22%3A%7B%22analyze_wildcard%22%3Atrue%2C%22query%22%3A%22fileid%3AOSPO-Dvorak.*%22%7D%7D%5D%7D%7D%7D#searchPanel HTTPS Web browser Granule Search Search for data granules belonging to this collection (a granule is the smallest aggregation of data that can be independently described and retrieved). search series NCEI Accession 0307187 v1.1 was published. 2025-08-20T16:50:44Z NCEI Accession 0307280 v1.1 was published. 2025-08-26T14:31:57Z NCEI Accession 0307281 v1.1 was published. 2025-08-26T14:44:04Z NCEI Accession 0307707 v1.1 was published. 2025-09-08T15:32:59Z NCEI Accession 0307803 v1.1 was published. 2025-09-11T17:16:26Z NCEI Accession 0307804 v1.1 was published. 2025-09-11T17:17:19Z NCEI Accession 0307814 v1.1 was published. 2025-09-11T17:17:59Z NCEI Accession 0307817 v1.1 was published. 2025-09-12T16:39:42Z NCEI Accession 0307816 v1.1 was published. 2025-09-12T19:05:07Z NCEI Accession 0308220 v1.1 was published. 2025-09-30T17:38:53Z NCEI Accession 0308221 v1.1 was published. 2025-09-30T17:39:53Z NCEI Accession 0307814 was revised and v2.2 was published. 2025-09-30T21:22:35Z NCEI Accession 0309781 v1.1 was published. 2025-12-01T19:33:35Z NCEI Accession 0309700 v1.1 was published. 2025-12-02T18:10:40Z NCEI Accession 0311435 v1.1 was published. 2026-01-14T16:15:26Z NCEI Accession 0308015 v1.1 was published. 2026-02-12T17:28:41Z asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian satellite sensor - visible to infrared satellite sensor - visible to infrared A space-borne sensor observing in the visible through infrared portions of the electromagnetic spectrum visual analysis visual analysis visual analysis and measurement of sample materials use visual analysis with observation types of visual estimate and/or visual observation Earth Observation Satellites Satellites that are specifically designed to observe Earth from orbit, similar to spy satellites but intended for non-military uses such as environmental monitoring, meteorology, map making etc. The most common type are Earth imaging satellites, that take satellite images, analogous to aerial photographs; some EO satellites may perform remote sensing without forming pictures, such as in GNSS radio occultation. Ref: Tatem, Andrew J.; Goetz, Scott J.; Hay, Simon I. (2008). "Fifty Years of Earth-observation Satellites". American Scientist. 96 (5): 390–398. doi:10.1511/2008.74.390. PMC 2690060. PMID 19498953.