Automated Tropical Cyclone Forecasting System: Difference between revisions

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Revision as of 02:35, 12 May 2021

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==System identification==

[[image:CHGHUR2014060700z.png|thumb|350px|This is an Atlantic Objective Aid message for a tropical disturbance which was in the Gulf of Mexico on June 7, 2014 at 00z, generated from input into ATCF. Note its identifier is AL902014, meant for a tropical disturbance ([[Invest (meteorology)|Invest]]-90L) in the North Atlantic Ocean during 2014]]

Systems within ATCF are identified with the basin prefix (AL, CP, EP, IO, SH, SL, WP) and then followed by two digit number between 01 and 49 for active tropical cyclones,<ref name="Navy">{{cite web|url=http://www.nrlmry.navy.mil/atcf_web/docs/database/new/abrdeck.html|title=Best Track/Objective Aid/Wind Radii Format|date=2010-06-08|access-date=2014-06-20|author=[[United States Naval Research Laboratory]]–[[Monterey, California|Monterey]], Marine Meteorology Division|publisher=[[United States Navy]]}}</ref> which becomes incremented with each new system, and then the year associated with the system (e.g. EP202015 for [[Hurricane Patricia]]). Numbers from 50 through 79 after the basin acronym are used internally by the basin's respective Tropical Cyclone Warning Centers and [[Regional Specialized Meteorological Center]].<ref>{{cite web|url=http://www.ofcm.gov/homepage/text/spc_proj/ihc/action-items.pdf|page=14|date=2007|access-date=2014-05-20|title=61st Interdepartmental Hurricane Conference Action Items|author=Office of the Federal Coordinator for Meteorology|publisher=Internet Archive Wayback Machine|url-status=dead|archive-url=https://web.archive.org/web/20071129132837/http://www.ofcm.gov/homepage/text/spc_proj/ihc/action-items.pdf|archive-date=November 29, 2007}}</ref> Numbers in the 80s are used for training purposes and can be reused. Numbers in the 90s are used for areas of interest,<ref name="ATCF Readme">{{cite web|author=Michael J. Brennan, [[National Hurricane Center]]|url=http://ftp.nhc.noaa.gov/atcf/README|title=Automated Tropical Cyclone Forecast (ATCF) Data Files / Text Files|publisher=[[National Oceanic and Atmospheric Administration]]|date=2013-05-18}}</ref> sometimes referred to as [[Invest (meteorology)|invests]] or areas of disturbed weather, and are also reused within any particular year. Their status is listed the following ways within the associated data file:

DB – disturbance,