Southest Pacific Cyclones

[masaji79]

Hi, new to the boards. I was just wondering, I know cyclones almost never form in the Southeast Pacific east of Tahiti. But does anyone know how many have moved further east of there, and how far did they go?

[RL3AO]

You can see for yourself here.

Also, welcome to S2K.
http://upload.wikimedia.org/wikipedia/commons/2/23/Global_tropical_cyclone_tracks-edit2.jpg

[Squarethecircle]

You can see for yourself here.

Also, welcome to S2K.
http://upload.wikimedia.org/wikipedia/commons/2/23/Global_tropical_cyclone_tracks-edit2.jpg

Actually, there's a vastly better one... let me bring it up... surprisingly, it wasn't the FP, but only because subtrops and extratrops were confusing to include...
http://upload.wikimedia.org/wikipedia/commons/2/2e/Global_tropical_cyclone_tracks.jpg

Subtropical storms are with a square, extratropical with a triangle. Storms that are here and not in the other picture are not necessarily reliable; use them with great caution.

[tolakram]

Why is it the southern atlantic doesn't have any storms?

[Squarethecircle]

Why is it the southern atlantic doesn't have any storms?

The only reason I can think of off-hand is high shear, but there is a Wikipedia article on it. Try checking there.

[RL3AO]

Why is it the southern atlantic doesn't have any storms?

Higher wind shear, lower water temps, and there are no tropical waves. They all stay near, or north of the equator.

[Derek Ortt]

well, some storms do form in the South Atlantic

The vast majority of the storms are from non-tropical cyclones that make the transition

[Cyclone1]

Two in 2004, one in 1991, and a few other suspect storms I've found (like a storm at 6S, March 22, 2002) are the only S Atl. storms I know of.

[Ptarmigan]

Why is it the southern atlantic doesn't have any storms?

Cooler waters, strong wind sheers from massive extratropical systems that cross South America and circle Antartica and lack of ITCZ. Tropical cyclones have formed in the South Atlantic, but rarely. Usually from transition from extratropical low. It also applies to the Southeast Pacific off the coast of South America.

[Ptarmigan]

Hi, new to the boards. I was just wondering, I know cyclones almost never form in the Southeast Pacific east of Tahiti. But does anyone know how many have moved further east of there, and how far did they go?

TCs that hit Tahiti usually do so in El Nino years, particularly strong ones.

[HurricaneBill]

Here's some cyclones that passed near Tahiti and/or beyond 150W.

Storm #25 March 1961

Storm #38 March 1963

Storm #20 January 1965

Storm #26 January 1966

Storm #5 December 1967

Cyclone Dolly February 1970

Cyclone Emma March 1970

Tropical Storm Vivienne December 1971

Cyclone Frances February 1976

Oddly enough, Frances formed well EAST of Tahiti and tracked westward. I believe the sudden "dip" in her track is an error.

Cyclone Robert April 1977

Tropical Storm Tessa December 1977

Cyclone Charles February 1978

Tropical Storm Diana February 1978

Cyclone Tahmar March 1981

Tropical Storm Fran March 1981

Tropical Storm Lisa December 1982

Cyclone Nisha-Orama February 1983

The official name is Nisha. However, due to miscommunications, Tahiti had named the cyclone Orama.

Tropical Storm Prema February 1983

Cyclone Rewa March 1983

Cyclone Veena April 1983

Cyclone William April 1983

I believe William holds the record for tracking the farthest east. William dissipated just east of 125W.

Cyclone Eric January 1985

Cyclone Ima February 1986

Tropical Storm June February 1986

Cyclone Sally December 1986

Cyclone Wini March 1987

Tropical Storm Cilla March 1988

Cyclone Hinano February 1989

Cyclone Wasa December 1991

Cyclone Cliff February 1992

Tropical Storm Hettie March 1992

Cyclone Nisha February 1993

Cyclone William January 1995

Cyclone Martin November 1997

Cyclone Osea November 1997

Cyclone Ursula February 1998

Like Cyclone William in 1983, Ursula also dissipated just east of 125W.

Cyclone Veli February 1998

Tropical Storm Alan April 1998

Tropical Storm Bart April 1998

Cyclone Kim February 2000

Like Cyclone Frances in 1976, Kim also developed far east of Tahiti and then moved westward.

Tropical Storm Rita March 2001

Tropical Storm Zita January 2007

Cyclone Arthur January 2007

[CrazyC83]

The SE Pacific seems to be the doldrums for tropical activity...that map is empty off the coast of South America (has there ever been a tropical cyclone east of 160°W in the South Pacific?)

[HurricaneBill]

The SE Pacific seems to be the doldrums for tropical activity...that map is empty off the coast of South America (has there ever been a tropical cyclone east of 160°W in the South Pacific?)

Several have moved beyond 160W. The all-time champs, Cyclone William (1983) and Cyclone Ursula (1998), both dissipated just east of 125W.