All currencies are converted from Japanese yen to United States Dollars using this with an exchange rate of the year 1981.
navy.mil
usno.navy.mil
Joint Typhoon Warning Center; Naval Western Oceanography Center (1982). Annual Tropical Cyclone Report: 1981(PDF) (Report). United States Navy, United States Air Force. Archived from the original(PDF) on March 4, 2016. Retrieved March 3, 2014.
Digital Typhoon (March 13, 2013). Typhoon 198115 (THAD). Digital Typhoon Detailed Track Information (Report). National Institute of Informatics. Retrieved March 4, 2014.
noaa.gov
aoml.noaa.gov
Christopher W Landsea; Hurricane Research Division (April 26, 2004). "Subject: D4) What does "maximum sustained wind" mean? How does it relate to gusts in tropical cyclones?". Frequently Asked Questions. National Oceanic and Atmospheric Administration's Atlantic Oceanographic and Meteorological Laboratory. Retrieved November 29, 2013.
unca.edu
atms.unca.edu
Kenneth R. Knapp; Michael C. Kruk; David H. Levinson; Howard J. Diamond; Charles J. Neumann (2010). 1981 Thad (1981227N18129). The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data (Report). Bulletin of the American Meteorological Society. Retrieved March 3, 2014.
web.archive.org
Joint Typhoon Warning Center; Naval Western Oceanography Center (1982). Annual Tropical Cyclone Report: 1981(PDF) (Report). United States Navy, United States Air Force. Archived from the original(PDF) on March 4, 2016. Retrieved March 3, 2014.