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| Hurricane forms off Mexican coast | Hurricane forms off Mexican coast |
| (4 days later) | |
| A tropical storm which formed off the west coast of Mexico has gained strength and become a hurricane. | A tropical storm which formed off the west coast of Mexico has gained strength and become a hurricane. |
| Hurricane Hernan was detected 1,390km (865 miles) off the coast and was expected was keep moving out to sea. | Hurricane Hernan was detected 1,390km (865 miles) off the coast and was expected was keep moving out to sea. |
| It is the fifth named hurricane of this year's Pacific hurricane season, which runs from August to November. | |
| Meteorologists warned on Thursday that an above-average number of storms and hurricanes were expected to hit the Pacific in 2008. | Meteorologists warned on Thursday that an above-average number of storms and hurricanes were expected to hit the Pacific in 2008. |
| American's National Hurricane Center (NHC) said Hurricane Hernan had reached maximum sustained wind speeds of nearly 75mph (120km/h). | American's National Hurricane Center (NHC) said Hurricane Hernan had reached maximum sustained wind speeds of nearly 75mph (120km/h). |
| HOW HURRICANES FORM Sea surface temperatures above 26.5C (79.7F)A pre-existing weather disturbanceMoisture in the atmosphereFavourable conditions, such as light winds or weak wind shear Animated guide: Hurricanes On Friday, hurricane force winds extended up to 35km (25 miles) from the storm's centre. | HOW HURRICANES FORM Sea surface temperatures above 26.5C (79.7F)A pre-existing weather disturbanceMoisture in the atmosphereFavourable conditions, such as light winds or weak wind shear Animated guide: Hurricanes On Friday, hurricane force winds extended up to 35km (25 miles) from the storm's centre. |
| NHC forecasters predict that the hurricane may strengthen slightly over the next two days before weakening as it moves over cooler waters. | NHC forecasters predict that the hurricane may strengthen slightly over the next two days before weakening as it moves over cooler waters. |
| On Thursday, America's National Oceanic and Atmospheric Administration (NOAA) reported that the 2008 Pacific storm season is likely to be more active that previously predicted, with up to ten hurricanes expected. | On Thursday, America's National Oceanic and Atmospheric Administration (NOAA) reported that the 2008 Pacific storm season is likely to be more active that previously predicted, with up to ten hurricanes expected. |