Sentences with phrase «number of major storms»

Not exact matches

They are a common measure of solar activity — the higher the number of sunspots, the higher the probability of a major storm that could wreak havoc on Earth (see Space storm alert: 90 seconds from catastrophe).

The major storms, the category 3, 4, and 5 hurricanes, only account for about 25 percent of the number of named storms, but they cause about 80 to 85 percent of the damage.

Each December, six months before the start of hurricane season, the now 75 - year - old Gray and his team issue a long - range prediction of the number of major tropical storms that will arise in the Atlantic Ocean basin, as well as the number of hurricanes (with sustained winds of 74 miles per hour or more) and intense hurricanes (with winds of at least 111 mph).

In addition to the rise in major hurricanes in the Atlantic basin, the average number of named hurricanes each year has increased to about seven storms from five storms, though the exact reasons for this rise are still the subject of research.

The 1981 - 2010 average number of named storms in the East Pacific is 16.5, with 8.9 hurricanes, and 4.3 major hurricanes.

There is a difference in predictability among storms for a variety of reasons, particularly since major storms require a number of ingredients to come together in an optimal way for development.

«No robust trends in annual numbers of tropical storms, hurricanes and major hurricanes counts have been identified over the past 100 years» 3.

According to our analysis of southeastern Florida, 37 of 222 major substations and two small power plants in the mapped region could be exposed to flooding from a major storm today; the number of exposed substations more than doubles by 2050 and more than triples by 2070 as sea level rise drives storm surge higher and farther inland.

The IPCC notes in its most recent scientific assessment that there are «[n] o robust trends in annual numbers of tropical storms, hurricanes and major hurricanes counts have been identified over the past 100 years in the North Atlantic basin,» and that there are «no significant observed trends in global tropical cyclone frequency.»

The Intergovernmental Panel on Climate Change reported in its most recent scientific assessment that «[n] o robust trends in annual numbers of tropical storms, hurricanes, and major hurricanes... have been identified over the past 100 years in the North Atlantic basin,» and that there are «no significant observed trends in global tropical cyclone frequency.»

These multi-decadal fluctuations in hurricane activity result nearly entirely from differences in the number of hurricanes and major hurricanes forming from tropical storms first named in the tropical Atlantic and Caribbean Sea.

Since this index represents a continuous spectrum of both system duration and intensity, it does not suffer as much from the discontinuities inherent in more widely used measures of activity such as the number of tropical storms, hurricanes or major hurricanes.

Named Storms = Tropical Storms, Hurricanes and Subtropical Storms Hurricanes = Saffir - Simpson Hurricane Scale 1 to 5 Major Hurricanes = Saffir - Simpson Hurricane Scale 3, 4, or 5 «ACE» = Accumulated Cyclone Energy - An index that combines the numbers of systems, how long they existed and how intense they became.

Still there seems to be a very good correlation between the number of tropical storms and the number of major hurricanes.

There are a number of factors which contribute to this rise, including major catastrophes and smaller disasters like wildfires, tornados, tropical storms, hail, ice and snow.