Tropical Cyclone Kate was a short-lived Category 2 cyclone that remained nearly stationary for its entire existence in the northwestern
Coral Sea
The Coral Sea () is a marginal sea of the South Pacific off the northeast coast of Australia, and classified as an interim Australian bioregion. The Coral Sea extends down the Australian northeast coast. Most of it is protected by the Fre ...
in February 2006. Forming out of a
monsoon
A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal oscil ...
al
trough
Trough may refer to:
In science
* Trough (geology), a long depression less steep than a trench
* Trough (meteorology), an elongated region of low atmospheric pressure
* Trough (physics), the lowest point on a wave
* Trough level (medicine), the l ...
on 22 February, Kate rapidly intensified throughout the day. By 23 February, the system attained its peak intensity with winds of 95 km/h (60 mph
10-minute sustained) and a
barometric pressure
Atmospheric pressure, also known as barometric pressure (after the barometer), is the pressure within the atmosphere of Earth. The standard atmosphere (symbol: atm) is a unit of pressure defined as , which is equivalent to 1013.25 millibars, 7 ...
of 985
hPa HPA may refer to:
Organizations
* Harry Potter Alliance, a charity
* Halifax Port Authority, Canada
* Hamburg Port Authority, Germany
* Hawaii Preparatory Academy, a school in Hawaii, US
* Health Protection Agency, UK
* Heerespersonalamt, the Ger ...
(
mbar
The bar is a metric unit of pressure, but not part of the International System of Units (SI). It is defined as exactly equal to 100,000 Pa (100 kPa), or slightly less than the current average atmospheric pressure on Earth at sea leve ...
). Shortly thereafter, increasing
wind shear
Wind shear (or windshear), sometimes referred to as wind gradient, is a difference in wind speed and/or direction over a relatively short distance in the atmosphere. Atmospheric wind shear is normally described as either vertical or horizontal ...
caused the storm to quickly weaken. By 24 February, the system dissipated over open waters near
Queensland
)
, nickname = Sunshine State
, image_map = Queensland in Australia.svg
, map_caption = Location of Queensland in Australia
, subdivision_type = Country
, subdivision_name = Australia
, established_title = Before federation
, established_ ...
, Australia. Although Kate did not directly affect land, large
swells produced by the storm impacted beaches in
Papua New Guinea
Papua New Guinea (abbreviated PNG; , ; tpi, Papua Niugini; ho, Papua Niu Gini), officially the Independent State of Papua New Guinea ( tpi, Independen Stet bilong Papua Niugini; ho, Independen Stet bilong Papua Niu Gini), is a country i ...
and Queensland. The waves injured six people in Australia, although no property damage was reported.
Meteorological history
Cyclone Kate originated from an
area of low pressure
In meteorology, a low-pressure area, low area or low is a region where the atmospheric pressure is lower than that of surrounding locations. Low-pressure areas are commonly associated with inclement weather (such as cloudy, windy, with possible ...
that was first identified on 22 February 2006, within a
monsoon
A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal oscil ...
al
trough
Trough may refer to:
In science
* Trough (geology), a long depression less steep than a trench
* Trough (meteorology), an elongated region of low atmospheric pressure
* Trough (physics), the lowest point on a wave
* Trough level (medicine), the l ...
.
The system
rapidly intensified
In meteorology, rapid intensification is a situation where a tropical cyclone intensifies dramatically in a short period of time. The United States National Hurricane Center defines rapid intensification as an increase in the maximum sustained wi ...
throughout the day, with the
Australian Bureau of Meteorology
Australian(s) may refer to:
Australia
* Australia, a country
* Australians, citizens of the Commonwealth of Australia
** European Australians
** Anglo-Celtic Australians, Australians descended principally from British colonists
** Aboriginal Aus ...
issuing their first advisory on the system that evening. Upon being classified, the system was immediately declared Tropical Cyclone Kate, skipping tropical low status.
At the same time, the
Joint Typhoon Warning Center
The Joint typhoon Warning Center (JTWC) is a joint United States Navy – United States Air Force command in Pearl Harbor, Hawaii. The JTWC is responsible for the issuing of tropical cyclone warnings in the North-West Pacific Ocean, South P ...
(JTWC) also began issuing advisories on the system, designating it as Tropical Cyclone 13P.
The storm had developed well-defined, upper-level
outflow
Outflow may refer to:
*Capital outflow, the capital leaving a particular economy
*Bipolar outflow, in astronomy, two continuous flows of gas from the poles of a star
*Outflow (hydrology), the discharge of a lake or other reservoir system
* Outflow ...
enhanced by
diffluence
Deformation is the rate of change of shape of fluid bodies. Meteorologically, this quantity is very important in the formation of atmospheric fronts, in the explanation of cloud shapes, and in the diffusion of materials and properties.Djurić, D ...
over the system.
The system remained nearly stationary over the northwestern
Coral Sea
The Coral Sea () is a marginal sea of the South Pacific off the northeast coast of Australia, and classified as an interim Australian bioregion. The Coral Sea extends down the Australian northeast coast. Most of it is protected by the Fre ...
.
Early on 23 February, the storm attained its peak intensity with winds of 95 km/h (60 mph
10-minute sustained) and a
barometric pressure
Atmospheric pressure, also known as barometric pressure (after the barometer), is the pressure within the atmosphere of Earth. The standard atmosphere (symbol: atm) is a unit of pressure defined as , which is equivalent to 1013.25 millibars, 7 ...
of 985
hPa HPA may refer to:
Organizations
* Harry Potter Alliance, a charity
* Halifax Port Authority, Canada
* Hamburg Port Authority, Germany
* Hawaii Preparatory Academy, a school in Hawaii, US
* Health Protection Agency, UK
* Heerespersonalamt, the Ger ...
(
mbar
The bar is a metric unit of pressure, but not part of the International System of Units (SI). It is defined as exactly equal to 100,000 Pa (100 kPa), or slightly less than the current average atmospheric pressure on Earth at sea leve ...
).
However, the JTWC assessed the system to have been slightly weaker, attaining peak winds of 85 km/h (50 mph
1-minute sustained).
Further intensification was anticipated as Kate slowly tracked towards
Queensland
)
, nickname = Sunshine State
, image_map = Queensland in Australia.svg
, map_caption = Location of Queensland in Australia
, subdivision_type = Country
, subdivision_name = Australia
, established_title = Before federation
, established_ ...
, Australia. However, Kate stalled shortly thereafter and began to weaken due to increasing
wind shear
Wind shear (or windshear), sometimes referred to as wind gradient, is a difference in wind speed and/or direction over a relatively short distance in the atmosphere. Atmospheric wind shear is normally described as either vertical or horizontal ...
.
Rapid weakening took place throughout the day, and JTWC declared the system dissipated early on 24 February.
The Bureau of Meteorology downgraded Kate to a tropical low around the same time, although they continued to monitor the storm for several more hours before reporting that it had dissipated over open waters.
Preparations and impact
Upon the cyclone's formation, the Bureau of Meteorology warned vessels to avoid the storm in anticipation of rough seas and winds gusting to . Although the storm did not pose much of a threat to
Queensland
)
, nickname = Sunshine State
, image_map = Queensland in Australia.svg
, map_caption = Location of Queensland in Australia
, subdivision_type = Country
, subdivision_name = Australia
, established_title = Before federation
, established_ ...
, officials urged residents to ensure their disaster kits were ready and that preparations for a moderate storm, such as storing lose outdoor objects and clearing gutters, had been completed.
While the storm had no direct impact on land, large
swells affected most of the Queensland coastline. In the
Shire of Noosa
The Shire of Noosa is a local government area about north of Brisbane in the Sunshine Coast district of South East Queensland, Australia. The shire covers an area of . It existed as a local government entity from 1910 until 2008, when it wa ...
, six surfers sustained serious injuries after wading into turbulent waters. Waves up to tossed the six surfers, leaving them with injuries ranging from broken noses and fractured ankles to head wounds from surfboards.
The waves also caused additional
beach erosion
Coastal erosion is the loss or displacement of land, or the long-term removal of sediment and rocks along the coastline due to the action of waves, currents, tides, wind-driven water, waterborne ice, or other impacts of storms. The landward ...
to parts of Papua New Guinea previously impacted by
Cyclone Ingrid
Cyclone Ingrid was a tropical cyclone which struck northern Australia during the 2004–05 Australian region cyclone season. Its minimum pressure was 924 mbar (hPa).
Meteorological history
Originally a low-pressure system north of the Gulf of ...
in March 2005.
See also
*
2005–06 Australian region cyclone season
The 2005–06 Australian region cyclone season was an above average tropical cyclone season. It began on 1 November 2005 and ended on 30 April 2006. The regional tropical cyclone operational plan also defines a ''tropical cyclone year'' separatel ...
References
External links
Australian Bureau of Meteorology (TCWC's Perth, Darwin & Brisbane)Joint Typhoon Warning Center (JTWC)
{{DEFAULTSORT:Kate(2006)
2005–06 Australian region cyclone season
Category 2 Australian region cyclones
2006 in Australia
Tropical cyclones in Queensland
Kate Kate name may refer to:
People and fictional characters
* Kate (given name), a list of people and fictional characters with the given name or nickname
* Gyula Káté (born 1982), Hungarian amateur boxer
* Lauren Kate (born 1981), American autho ...