Hurricane Holly (1969)
| Category 1 hurricane ( SSHWS ) | ||
|---|---|---|
| Emergence | September 14, 1969 | |
| resolution | September 21, 1969 | |
|
Peak wind speed |
|
|
| Lowest air pressure | 984 mbar ( hPa ; 29.1 inHg ) | |
| dead | None | |
| Property damage | Unknown | |
|
Affected areas |
None | |
| Season overview: 1969 Atlantic hurricane season |
||
Hurricane Holly was the eighth tropical storm and sixth hurricane of the 1969 Atlantic hurricane season . Holly formed in the central Atlantic on September 14th and disbanded in the eastern Caribbean on September 21st . The system's passage as a tropical depression resulted in no reported damage or death in the Windward Islands .
Storm course
The tropical disruption that eventually evolved into Hurricane Holly was identified off the coast of West Africa on September 8th . Initially the system moved westward until it leveled out on a west-northwest course. It was classified as a tropical low pressure area about 2315 kilometers southeast of Puerto Rico on September 14th after a reconnaissance aircraft of the United States Navy found a closed circulation and an air pressure of 1000 mbar (hPa). At that point in time, the system was rapidly intensifying and naming was expected for the next warning. This assumption turned out to be correct, and on September 14th at 10:00 p.m. UTC the system had strengthened to form Tropical Storm Holly with winds of 40 knots (about 75 km / h). A little later the phase of intensification ended for a short time and Holly's train speed decreased. No threat to land from Holly was predicted for the next day, although further intensification was considered possible. A reconnaissance flight into the center of the storm was carried out during the day. This resulted in an intensification of the storm to a hurricane with wind speeds of 120 km / h.
As the hurricane slowly migrated northwest, the threat to the Leeward Islands slowly diminished. The next day, forecasts assumed that the hurricane would maintain its intensity during the course of September 16. In fact, Holly lost her urge to move forward and became virtually stationary for a few hours. Forward speed increased again during the night, but the hurricane was still more than 1,600 miles from Puerto Rico .
During the day of September 17, Hurricane Holly maintained stable intensity, but during the night the hurricane was downgraded to a tropical storm based on aircraft measurements. The storm had fought in vain against the cooler temperatures directly east of the Antilles and the lack of discharge at high altitudes during the previous 36 hours. The now tropical storm continued its slow weakening on the morning of September 18, as the environment was not conducive to further development of the system.
At noon on September 18th, the system was downgraded to a tropical low pressure system and in the course of the evening it regressed to a normal low pressure area, which completely dissolved on September 20th.
Preparations and naming
Because at no time in Holly's existence was the country believed to be endangered, no storm warnings were issued for the Antilles. When Holly finally crossed the Leeward Islands, it was already a disintegrating tropical depression. Due to the weakness of the system at this point in time and due to the fact that the system had already formed several days before, so that possible dangers did not come as a surprise, no storm-related damage to property or personal injury was reported. The name "Holly" was first used in the Atlantic Ocean in 1969. The name was first on the list of names during the 1965 Atlantic hurricane season , but was not given at the time. Holly replaced the name Hattie , which was deleted after the 1961 so-called hurricane devastated what was then British Honduras . The name Holly was used again in the Atlantic during the 1976 hurricane season . During the 1992 hurricane season , Hali , the Hawaiian form of the name, was replaced with the name Hermione for reasons unknown . Currently, the Holly name is not on the list of tropical cyclone names worldwide .
Individual evidence
- ^ Hurricane Holly Preliminary Report. ( GIF ) National Hurricane Center , March 21, 2008, accessed December 6, 2008 .
- ↑ a b Hurricane Holly Advisory 9-14 1900 UTC. ( JPEG ) (No longer available online.) National Hurricane Center, March 21, 2008, formerly original ; accessed on December 6, 2008 (English). ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ Hurricane Holly Advisory 9-14 2200 UTC. (JPEG) (No longer available online.) National Hurricane Center, March 21, 2008, formerly original ; accessed on December 6, 2008 (English). ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ Hurricane Holly Advisory 9-15 0400 UTC. (JPEG) (No longer available online.) National Hurricane Center, March 21, 2008, formerly original ; accessed on December 6, 2008 (English). ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ Hurricane Holly Advisory 9-15 1600 UTC. (JPEG) (No longer available online.) National Hurricane Center, March 21, 2008, formerly original ; accessed on December 6, 2008 (English). ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ Hurricane Holly Advisory 9-15 2200 UTC. (JPEG) (No longer available online.) National Hurricane Center, March 21, 2008, formerly original ; accessed on December 6, 2008 (English). ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ Hurricane Holly Advisory 9-16 0400 UTC. (JPEG) (No longer available online.) National Hurricane Center, March 21, 2008, formerly original ; accessed on December 6, 2008 (English). ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ Hurricane Holly Advisory 9-14 1000 UTC. (JPEG) (No longer available online.) National Hurricane Center, March 21, 2008, formerly original ; accessed on December 6, 2008 (English). ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ a b Hurricane Holly Advisory 9-17 2200 UTC. (JPEG) (No longer available online.) National Hurricane Center, March 21, 2008, formerly original ; accessed on December 6, 2008 (English). ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ Hurricane Holly Advisory 9-18 1000 UTC. (JPEG) (No longer available online.) National Hurricane Center, March 21, 2008, formerly original ; accessed on December 6, 2008 (English). ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ Hurricane Holly Advisory 9-18 1600 UTC. (JPEG) (No longer available online.) National Hurricane Center, March 21, 2008, formerly original ; accessed on December 6, 2008 (English). ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ Hurricane Holly Advisory 9-18 2200 UTC. (JPEG) (No longer available online.) National Hurricane Center, March 21, 2008, formerly original ; accessed on December 6, 2008 (English). ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ Hurricane Holly Advisory 9-20 1600 UTC. (JPEG) (No longer available online.) National Hurricane Center, March 21, 2008, formerly original ; accessed on December 6, 2008 (English). ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ^ History of Atlantic Hurricane Names. Atlantic Tropical Weather Center, accessed December 6, 2008 .
- ↑ Retired Hurricane Names since 1954. National Hurricane Center, accessed December 6, 2008 .
- ^ Gary Padgett: Monthly Global Tropical Cyclone Summary August 2007 (Part 1 of 2). Retrieved December 6, 2008 .
