5:30 PM TWO about wave behind TD#5

[cycloneye]

TWOAT
TROPICAL WEATHER OUTLOOK
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
530 PM EDT MON JUL 11 2005

FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO...

THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON TROPICAL
DEPRESSION FIVE...LOCATED ABOUT 1030 MILES EAST OF THE
WINDWARD ISLANDS.

A VIGOROUS TROPICAL WAVE LOCATED ABOUT 700 MILES SOUTHWEST OF THE
CAPE VERDE ISLANDS. DUE TO THE LOW LATITUFDE LOCATION OF THIS
SYSTEM...ANY DEVELOPMENT SHOULD BE SLOW TO OCCUR.

ELSEWHERE...TROPICAL STORM FORMATION IS NOT EXPECTED THROUGH
TUESDAY.

PUBLIC ADVISORIES ON TROPICAL DEPRESSION FIVE ARE ISSUED UNDER WMO
HEADER WTNT35 KNHC AND UNDER AWIPS HEADER MIATCPAT5.
FORECAST/ADVISORIES ON THE DEPRESSION ARE ISSUED UNDER WMO HEADER
WTNT25 KNHC AND UNDER AWIPS HEADER MIATCMAT5.

FORECASTER STEWART

[Sanibel]

A disturbance closely following one ahead of it will sometimes keep the forward disturbance south...

[Derecho]

Actually sort of unhappy with the wording of that as it sort of contributes to the stupid "NOT ENOUGH CORIOLOIS!" myth you constantly see spouting about all waves below 10N in the Atlantic.

Coriolois is the same at the same latitudes all over the earth, and storms ROUTINELY form at the same latitude this wave is at, in the Northwest Pacific, Southwest Pacific, and Indian Ocean.

It's the Atlantic/East Pac that is the anomalous basin with little development within 10 degrees of the equator and no development within 7 degrees of the Equator. And Coriolois is clearly not the cause.

[weatherwindow]

fujiwhara effect

[Wthrman13]

Actually sort of unhappy with the wording of that as it sort of contributes to the stupid "NOT ENOUGH CORIOLOIS!" myth you constantly see spouting about all waves below 10N in the Atlantic.

Coriolois is the same at the same latitudes all over the earth, and storms ROUTINELY form at the same latitude this wave is at, in the Northwest Pacific, Southwest Pacific, and Indian Ocean.

It's the Atlantic/East Pac that is the anomalous basin with little development within 10 degrees of the equator and no development within 7 degrees of the Equator. And Coriolois is clearly not the cause.

Indeed. It almost certainly has more to do with the average latitude that tropical waves come off the coast of Africa, and the general, more northward placement of the ITCZ in the Atlantic Basin relative to other basins.

While Coriolis force is indeed zero at the equator, and small but increasing with latitude in the rest of the tropics, you don't need much to get a large disturbance circulating, and after that, it's conservation of angular momentum all the way until you get a TC.