Science

'Never Before Seen' Image of Three Hurricanes Has Meteorologists Shaking. Here's Why

'Never Before Seen' Image of Three Hurricanes Has Meteorologists Shaking. Here's Why”

The "spin" of the hurricane is down to the rotation of the Earth affecting the movement of the air: since Irma formed north of the equator, it spins anticlockwise.

An infamously powerful and unnamed hurricane hit Cuba in 1932, forcing 1 million people to evacuate from low-lying areas in central Cuban provinces.

Meantime, the Florida Keys braces as hurricane force winds are expected at daybreak.

For the climatologist Michael Mann of penn State University, the strong increase in temperatures of ocean waters in recent years is the signature of global warming, which contributes to the intensity of these storms.

Irma has the lowest barometric pressure ever recorded, 915 millibars.

'Never Before Seen' Image of Three Hurricanes Has Meteorologists Shaking. Here's Why

As the sunlight cycled between day and night September 4-7, the satellite captured Katia and Jose as they developed, while the eye of Hurricane Irma remained ominously intact.

Dr. Gerry Bell, lead seasonal hurricane forecaster at the National Oceanic and Atmospheric Administration's Climate Prediction Center, told The New York Times warming waters, along with a relative lack of sudden wind shift, have created optimal hurricane conditions this season. An average season produces 12 named storms of which six become hurricanes, including three major hurricanes. According to Wunderground, ACE is "used to express the activity and destructive potential of individual tropical cyclones and entire tropical cyclone seasons". Irma's broken two ACE records: the highest ACE rating ever at 44.2 units, and also the highest ACE values over a 24-hour period.

This breaks the old record set by Hurricane Allen in 1980. That's about 120 miles (190 km) east of the Northern Leeward Islands.

Jose was forecast to pass close to St. Maarten over the weekend, delivering a second damaging blow to the former Dutch colony that suffered catastrophic damage when, at that time Category 5, Hurricane Irma slammed into it on Wednesday (Sept. 6).

This current periodic hot product, a phenomenon of wind shear, which defuses the formation of hurricanes.



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