appointment [edit ]
Invests are numbered from 90 to 99, followed by a suffix letter “ L ” in the North Atlantic basin, “ e ” and “ C ” in the Eastern and Central Pacific basins ( respectively ), or “ watt ” in the Western Pacific river basin. [ 2 ]
Reading: Invest (meteorology) – Wikipedia
The Joint Typhoon Warning Center besides issues unofficial warnings for U.S. government interests ( predominantly military ) in the Southern Hemisphere, designating tropical invests with the “ S ” suffix when they form west of 135°E ( this spans the whole South indian Ocean, including the South-Western indian Ocean basin and the western half of the Australian-region basin ), and the “ P ” suffix when they form east of 135°E ( spans both the easterly half of the australian area and the South Pacific washbasin ). In addition, invests in the North indian Ocean cyclone river basin are besides labelled by the JTWC, and are suffixed with “ A ” if they form in the Arabian Sea and with “ B ” if they form in the Bay of Bengal.
The Naval Research Laboratory ‘s Marine Meteorology Division besides uses the “ Q ” suffix to designate invests which form in the South Atlantic Ocean, [ 3 ] [ 4 ] flush though it is not recognized as an official tropical cyclone river basin by the World Meteorological Organization. These suffix letters ( with the usual exception of “ L ” ) are besides used with the tropical cyclone numbers ( TC numbers for abruptly ) assigned to tropical and subtropical depressions ( and electric potential tropical cyclones ) monitored by the NHC & CPHC ( North Atlantic systems are normally designated by TC numbers without a suffix letter ; the “ L ” is placid used, however, by the NRL for this basin ) and all tropical, subtropical, and potential tropical cyclones tracked by the JTWC. [ 5 ]
Number rotation [edit ]
Numbers are rotated within the season and are re-used as necessary ( the adjacent endow after 99 would be numbered 90 ). In contrast, TC numbers start each year/season with 01 and run upwards, normally up to 30 in NHC and CPHC-monitored basins. [ 6 ] The hard-coded limit imposed by the Automated Tropical Cyclone Forecasting System is 49. TC numbers assigned to proper cyclones ( tropical, subtropical, and electric potential tropical ) are not recycled until the watch year/season. If the invest arrangement develops into a ( bomber ) tropical cyclone, it is reclassified as the adjacent name/number on the list. This is a TC count if evolving into a depression or JTWC cyclone ; or a name if evolving cursorily into a tropical or subtropical storm, bypassing the depressive disorder stage ). The NHC besides numbers cyclones based on previous seasons .
References [edit ]
- Navy/NRL Tropical Cyclone Page – Current tropical cyclones and INVESTS worldwide