National Arrocane Center
| Agency overview | |
|---|---|
| Formed | 1952 |
| Type | Meteorological agency |
| Jurisdiction | Ardonia |
| Status | Active |
| Headquarters | Ataraxia |
| Employees | 1 |
| Agency executive | Sharkius Director |
The National Arrocane Center (NAC) is a meteorological agency responsible for monitoring, forecasting, and analyzing tropical cyclones across Ardonia and its surrounding waters. Headquartered in Ataraxia, the center serves as the primary agency responsible for tropical cyclone analysis and uses the Ardonia arrocane wind scale (AAWS) to classify tropical cyclone intensity. The agency is currently operated solely by its director, Sharkius.
The NAC was established in 1952. Several months after its formation, the Ardonia Meteorological Organization (AMO) was established and provided the NAC with the first rotating list of tropical cyclone names. List 1 was first used during the 1953 Ardonia arrocane season.
History
The National Arrocane Center was established in 1952 to monitor and analyze tropical cyclones affecting Ardonia and its surrounding waters. The agency established its headquarters in Ataraxia, an Ardoni city located within the Wilderness.
Several months after the establishment of the NAC, the Ardonia Meteorological Organization (AMO) was formed. The AMO subsequently provided the center with List 1, the first of the rotating lists used to name tropical cyclones. The list entered operational use with the 1953 Ardonia arrocane season.
The NAC uses the Ardonia arrocane wind scale to classify tropical cyclone intensity according to maximum one-minute sustained winds. Over time, the center's tropical cyclone analyses have formed the official record used for Ardonia arrocane seasons, including storm tracks, maximum sustained winds, minimum central pressures, and peak classifications.
Organization
The National Arrocane Center is headquartered in Ataraxia. The agency is currently operated by a single employee, Sharkius, who serves as its director and produces the center's tropical cyclone analyses.
Tropical cyclone operations
Tropical cyclone monitoring
The NAC monitors tropical disturbances and tropical cyclones across Ardonia and its surrounding waters. Tropical cyclones are tracked throughout their development, intensification, weakening, land interaction, and eventual dissipation or transition into a non-tropical system.
Intensity analysis
The NAC determines tropical cyclone intensity primarily using maximum one-minute sustained winds. Minimum central pressure is also analyzed as part of the intensity record of individual systems.
Official NAC analyses may differ from estimates produced by other meteorological agencies that use different methodologies or wind-averaging periods. In particular, the Felden Meteorological Legislation (FML) uses maximum 10-minute sustained winds and conducts independent intensity and pressure analyses.
Advisories and forecasts
The National Arrocane Center issues tropical cyclone advisories throughout the lifetime of an active system. Advisories provide information on a cyclone's current position, maximum sustained winds, minimum central pressure, movement, classification, and forecast evolution. The center may update its analysis as new observations and information become available.
During active tropical cyclone seasons, the NAC provides operational monitoring and forecasting as systems develop and move across Ardonia and its surrounding waters. The 2019 Ardonia arrocane season was conducted as a live season, with advisories and intensity estimates being produced as tropical cyclones developed rather than being constructed entirely through post-season analysis.
Watches and warnings
The National Arrocane Center issues watches and warnings when tropical storm or arrocane conditions threaten populated areas. Four principal tropical cyclone alerts are used:
- A Tropical Storm Watch is issued when tropical storm conditions are possible within a specified area.
- A Tropical Storm Warning is issued when tropical storm conditions are expected within a specified area.
- An Arrocane Watch is issued when arrocane conditions are possible within a specified area.
- An Arrocane Warning is issued when arrocane conditions are expected within a specified area.
Watches and warnings may be issued, modified, extended, or discontinued as the forecast track and intensity of a tropical cyclone change. An area may also be upgraded from a tropical storm watch or warning to an arrocane watch or warning when increasingly severe conditions are anticipated.
Post-storm analysis
Following the conclusion of a tropical cyclone, the NAC may review the system's track and intensity history to produce a final analysis. These analyses form part of the historical record of Ardonia tropical cyclone activity.
Ardonia arrocane wind scale
The National Arrocane Center uses the Ardonia arrocane wind scale (AAWS) to classify tropical cyclones according to their maximum one-minute sustained winds. The scale divides arrocanes into five categories, with Category 1 representing the lowest arrocane classification and Category 5 representing the highest.
Under the AAWS, tropical depressions have maximum one-minute sustained winds of 39 mph or lower, while tropical storms have winds between 40 and 74 mph. Arrocane intensity begins at 75 mph. Category 1 arrocanes have winds of 75–99 mph, Category 2 systems have winds of 100–114 mph, Category 3 systems have winds of 115–129 mph, Category 4 systems have winds of 130–159 mph, and Category 5 systems have winds of at least 160 mph.
Category 3, 4, and 5 systems are collectively referred to as major arrocanes.
Tropical cyclone naming
The tropical cyclone naming lists used by the National Arrocane Center are provided by the Ardonia Meteorological Organization (AMO). The first such list, List 1, was provided following the establishment of the AMO in 1952 and was first used during the 1953 Ardonia arrocane season.
The naming lists rotate between seasons, with names removed from reuse following particularly destructive or deadly storms. Retired names are replaced before the corresponding list is next used.
Relationship with other meteorological agencies
Ardonia Meteorological Organization
The Ardonia Meteorological Organization (AMO) provides the rotating lists of tropical cyclone names used by the National Arrocane Center. The organization was established several months after the NAC in 1952 and supplied the first naming list for use beginning with the 1953 season.
Felden Meteorological Legislation
The Felden Meteorological Legislation (FML) independently analyzes tropical cyclone intensity in the Eastern Ardonia Ocean. Unlike the NAC, which uses one-minute sustained winds and the AAWS, the FML uses 10-minute sustained winds and its own tropical cyclone intensity scale. Consequently, the two agencies may assign different maximum wind speeds and classifications to the same tropical cyclone.
Records and climatology
The National Arrocane Center maintains historical information on tropical cyclone activity, including storm tracks, maximum sustained winds, minimum central pressures, accumulated cyclone energy, landfalls, and other characteristics of individual storms and seasons.