Tag Archives: southern hemisphere

Tropical cyclone activity continues worldwide!

Tropical cyclone activity continues unabated in the northern hemisphere. More than sixty named-storms have been generated worldwide so far in 2018 in the northern  hemisphere, from the Atlantic, the Pacific (east, central, and northwest basins), to the Indian ocean.

Large and powerful super-typhoon TRAMI continues its approach toward Taiwan over the northwest Pacific

Currently super-typhoon TRAMI continues to move toward Taiwan, while other large tropical waves and disturbed weather cells are active over the Northwest Pacific.

Satellite image (NOAA) of 26 September 2018 showing Hurricane ROSA, the 18th named tropical cyclone to form in the east Pacific during this year’s season, which officially started on 15 May.

In the East Pacific basin hurricane ROSA, the 18th named storm of the 2018 season is active off the coast of Mexico. Other potentially cyclonic systems are on the move off the coast of Central America and Panama.

Satellite image (NOAA) of 26 September 2018 showing various storms systems over the Atlantic basin, including a regenerated KIRK, now a tropical storm, a degrading LESLIE, and other potentially cyclonic systems near the Carolinas’ coast and in ‘Hurricane Alley” and Equatorial Africa.

In the Atlantic, KIRK has regenerated into a tropical storm to the east of Barbados, while LESLIE now a tropical depression is approaching the region of the Azores Islands. Another disturbed weather system is off the coast of the Carolinas to the south of Cape Hatteras, which warrants monitoring. Other tropical waves extend from ‘Hurricane Alley’ to Equatorial Africa.

Following the Autumn equinox the Sun above is now to the south of the equator increasing the heat content of the world’s oceans. As a result, we are beginning to detect some potential for cyclonic development in the southern hemisphere. One such system is now being monitored near Australia’s northeast coast.

There is plenty of fuel for continued tropical cyclone generation worldwide this Wednesday 26 September 2018. Vulnerable communities everywhere will do well to remain alert. Be prepared! MITIGATE!

Early Summer 2014: A panoramic view of Earth!

Early Summer 2014 on Earth’s northern hemisphere. Wherever you look  there are flashes of storms, extreme rain, flash floods and other disturbed weather events everywhere. It seems Mother Nature is experimenting with everything there is in  the atmosphere, including gigantic twin tornadoes striking simultaneously in the Heartland USA!

Let us take a look at what our satellites are seeing from above. The three images that follow are mosaics of satellite observations made earlier this Tuesday, 24 June 2014, with water-vapor filters, which  help highlight areas of storms and  disturbed weather.

Water-vapor fileter satelite view of Earth's western hemisphere on Tuesday 24 June 2014
Water-vapor filter satellite view of Earth’s western hemisphere on Tuesday 24 June 2014

The view above shows large storms over Texas and the Great Plains USA, a large area of storms extending from Northern South America over Panama, Costa Rica and Nicaragua. There is also a large cell off the coast of Central America and Mexico over the eastern east Pacific Ocean. And ‘Hurricane Alley’ shows a slim train of storm cells riding along on their westward journey. However, Equatorial Africa, which is the feeder for Hurricane Alley appears quiet and devoid of any major systems, but farther to the east over the Indian Ocean there are some major cells of tropical activity that may eventually find their way over Equatorial Africa to activate the ‘tropical wave assembly line’ in coming days.

Mosaic of satellite images highlighting water-vapor in the atmosphere on Tuesday 24 June 2014, over the Pacific  basin above the  equator
Mosaic of satellite images highlighting water-vapor in the atmosphere on Tuesday 24 June 2014, over the Pacific basin above the equator

The ‘belt of tropical activity’ appears much more active than over the Atlantic and Equatorial Africa on this view.  A train of large storm systems extends all the way from the Gulf of Panama in the east to the Philippines and beyond or more than 20,000 km. with only one significant gap to the southeast of Hawaii.

Water-vapor filtered mosaic of satellite images of 24 June 2014 over Australia, portiond of the Indian Ocean and the Southeast Pacific Ocean
Water-vapor filtered mosaic of satellite images of 24 June 2014 over Australia, portions of the Indian Ocean and the Southeast Pacific Ocean

A rather different array of  weather systems is visible over the high latitudes in the southern hemisphere, where winter 2014 has just set in. A major weather system is clearly visible over New Zealand. However the other big islands south of the equator, Australia, Madagascar, are enjoying mostly clear weather during the earlier hours of this Tuesday 24 June 2014.

We all know however that it is just a question of time. Some of these cells in the northern hemisphere may start to show signs of cyclonic development, and in no time we may see a tropical cyclone over any of the basins that are cradles of cyclogenesis. So we keep on watching, looking for those early signs that allows us to investigate, and follow, and forecast. It is a never ending process between humans and Nature.

The most amazing aspect of this, one at which I always marvel, is that a rather insignificant weather cell over the central Indian Ocean just starting its westward journey. and a similarly anonymous storm cell over the Northwestern Pacific moving eastward along the fringes of a jet-strean may, not only survive their long journeys, but actually grow picking-up  strength and  size along the way, and get to interact with one another three weeks from today generating the next cyclonic event over the Atlantic, our neck-of-the-woods here in Florida.

Consequently, amazing as this view from above, and marvelous as the never-ending workings of the atmosphere and oceans are, the fact remains that we humans must always be alert, prepared and engaged in the practice of mitigation to reduce the potential for damage from that next one, which might be under gestation starting from opposite extreme of our planet Earth.

Enjoy today’s panoramic vistas. Keep on watching!