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-term average is 12. The most likely number of hurricanes (winds of at least 74 mph) predicted to occur in the North Atlantic during the June to November period is 8, with a 70% chance that the number will be in the range 6 to 10. The 1980-2010 long-term average is 6. An ACE index of 125 is predicted

average is 12. The most likely number of hurricanes (winds of at least 74 mph) predicted to occur in the North Atlantic during the June to November period is 6, with a 70% chance that the number will be in the range 4 to 8. The 1981-2010 long-term average is 6. An ACE index of 105 is predicted

Turning unsettled again as we move through the weekend, then, ex-Hurricane Kirk likely reaching northwest Europe from midweek and potentially bringing disruptive weather for the UK.

cloud and rain could hamper viewing potential for some.” Find the latest space weather forecast from the Met Office.    Potentially disruptive weather possible later next week From midweek, Hurricane Kirk, which is currently in the Atlantic, poses a threat of bringing disruptive rain and wind

-term average is 12. The most likely number of hurricanes (winds of at least 74 mph) predicted to occur in the North Atlantic during the June to November period is 8, with a 70% chance that the number will be in the range 6 to 10. The 1981-2010 long-term average is 6. An ACE index of 145 is predicted

normal activity relative to the 1980-2010 long-term average of 12. This figure is in addition to Tropical Storm Ana which occurred in May 2015, outside the forecast period. The most likely number of hurricanes (winds of at least 74 mph) predicted to occur in the North Atlantic during the June

of the weekend with sunshine and showers, the heaviest of the showers being in the north. So far this autumn, hurricanes have rarely been out of the headlines, as they have brought devastation to parts of the Caribbean and the southern United States. These systems often head north out of the tropics, but when

. It typically moves forward at speeds of 10-15 m.p.h., but can travel as fast as 40 m.p.h. At its very early and weak stages it is called a Tropical Depression. When the winds reach 39 m.p.h. it is called a Tropical Storm. If the wind should reach 74 m.p.h. or more the tropical storm is called a Hurricane

to the 1980-2010 long-term average of 12. The most likely number of hurricanes predicted to occur in the North Atlantic during the June to November period is 9, with a 70% chance that the number will be in the range 4 to 14. This represents above normal activity relative to the 1980-2010 long-term

and had developed a clear, well-defined eye structure. Wind speeds were measured by the ASCAT satellite instrument* to be at Tropical storm intensity, sustaining winds of 55 knots (63 mph). The system soon lost its Hurricane-like appearance but went on to cause heavy rainfall and flooding over Greece

Office (June-issued) seasonal forecast for 2009 3.1 Observed tropical storm activity During July–November 2009, 9 tropical storms formed (of which 3 became hurricanes) with a total ACE index of 52.4. Thus in terms of ACE index the season was indeed the least active for over a decade, and the second