Tropical Storm Olivia (2006)
| Tropical Storm ( SSHWS ) | ||
|---|---|---|
 |
||
| Emergence | October 9, 2006 | |
| resolution | October 12, 2006 | |
|
Peak wind speed |
|
|
| Lowest air pressure | 1000 mbar ( hPa ; 29.5 inHg ) | |
| dead | no | |
| Property damage | no | |
|
Affected areas |
on the high seas | |
| Season overview: 2006 Pacific hurricane season |
||
Tropical Storm Olivia was the 19th tropical cyclone and 16th named storm of the 2006 Pacific hurricane season . Olivia was born on October 9, about 2200 km west-southwest of the southern tip of Lower California . Moving northeast, maintaining tropical storm status, the system failed to strengthen significantly because of wind shear . Olivia weakened to a low pressure area on October 11 and degenerated into a residual low on October 13 on an east-southeast course. This was later absorbed by a major disturbance that included Norman's residual lows. Because the storm remained far out at sea during its existence , no effects on land were reported.
Storm course
On September 18, a tropical wave broke off the coast of West Africa and crossed the Atlantic Ocean . As the wave passed the Cape Verde Islands to the south , atmospheric convection flared up , but the system did not develop any further and continued on its way west. She crossed northern South America and entered the Pacific Ocean on September 29th . The convection increased continuously and an extensive low pressure area developed along the wave axis on October 5th. Thunderstorm activity increased and observations using the Dvorak technique began on October 7th. Moderate wind shear prevented the convection activity from continuing for more than a few hours, which initially prevented further development of the system. However, as the low pressure system moved further west, the convection in the northern semicircle of the system developed into a curved ribbon structure. It is suspected. that the system organized itself into a tropical depression on October 9th at 18:00 UTC , when it was about 2200 km west-southwest of the southern tip of Lower California .
The low pressure area began to drift northwest as it came under the influence of the control currents of a high pressure area . Late on October 9th, the system's deep convection became less organized and the protective cold cloud cover disappeared. However, since it was not expected that the wind shear would increase significantly immediately, an intensification was forecast within a short time. Early on October 10th, the low pressure area organized a little better after an outbreak of deep convection occurred north of the center. The system maintained deep convection near the center for six to nine hours, and at 6:00 a.m. UTC on October 9, the low pressure area became Tropical Storm Olivia.
Six hours after being upgraded to a tropical storm, Olivia achieved sustained peak wind speeds of 75 km / h. However, since the wind shear was now quite strong, the deep convection on October 10th was limited to the northern semicircle of the circulation. On October 11th, the wind shear had a significant impact on Olivia, the convection activity decreased and the cloud cover warmed up. Because of the disorganization, the system was downgraded to a tropical depression at 12:00 UTC. The convection was separated from the center of circulation and later in the day the storm degenerated into a vortex of low clouds with no active convection. After the system turned east, convection bursts began to form again near the center, prompting the National Hurricane Center 's meteorologists to continue issuing storm warnings. There was a very good chance that if the system could survive long enough to reach an area with warmer surface water temperatures and less wind shear, Olivia would regain strength. However, it fell into a residual low on October 13th. This residual low moved east-southeast and was absorbed by the residual low of Norman on October 15 ; the mutual influence of both systems is probably responsible for the re-intensification of Norman in a tropical storm shortly afterwards.
Effects and naming
Because Olivia stayed far from land, there have been no reports of impact, property damage or loss of life associated with this storm. No ships were in distress and no specific storm warnings were triggered for individual sections of the coast. In the absence of any impact, the Olivia name has not been removed from the list of tropical cyclone names and is intended for use during the 2012 Pacific hurricane season . Its usage in 2006 marked the eighth time the name Olivia has been used in the Eastern Pacific Basin. The naming in this basin follows the same principle as the names for Atlantic hurricanes, but uses separate lists. The current naming system was introduced for the Pacific Basin a year before the Atlantic when List IV was used out of order in 1978. In 1979 both pools used List I and the lists have been running in parallel ever since.
Individual evidence
- ↑ a b c d e f Stacy R. Stewart: Tropical Storm Olivia Tropical Cyclone Report ( English , PDF; 403 kB) National Hurricane Center. 2006. Retrieved December 4, 2008.
- ^ Franklin: Tropical Depression 16-E Discussion Number 1 . National Hurricane Center. 2006. Retrieved December 4, 2008.
- ^ Pasch: Tropical Depression 16-E Discussion Number 2 ( English ) National Hurricane Center. 2006. Retrieved December 4, 2008.
- ↑ Knabb & Brown: Tropical Depression 16-E Discussion Number 3 ( English ) National Hurricane Center. 2006. Retrieved December 4, 2008.
- ^ Pasch: Tropical Storm Olivia Discussion Number 6 ( English ) National Hurricane Center. 2006. Retrieved December 4, 2008.
- ↑ Knabb & Willis: Tropical Depression Olivia Discussion Number 7 . National Hurricane Center. 2006. Retrieved December 4, 2008.
- ^ Franklin: Tropical Depression Olivia Discussion Number 9 ( English ) National Hurricane Center. 2006. Retrieved December 4, 2008.
- ^ Pasch: Tropical Depression Olivia Discussion Number 10 . National Hurricane Center. 2006. Retrieved November 26, 2008.
- ↑ Stewart: Tropical Depression Olivia Discussion Number 11 . National Hurricane Center. 2006. Retrieved November 26, 2008.
- ↑ National Hurricane Center: Eastern Pacific hurricane best track analysis 1949-2014 ( English ) United States National Oceanic and Atmospheric Administration's Office of Oceanic & Atmospheric Research. October 15, 2015. Retrieved October 25, 2015.
- ↑ Worldwide Tropical Cyclone Names ( English ) National Hurricane Center . 2007. Retrieved December 4, 2008.