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Hurricane Darby and Tropical Storm Estelle continue moving west to west northwest in the eastern Pacific. Darby has winds of 65 knots and is forecast to continue slowly weakening. Estelle's winds are down to 55 knots and continued weakening is expected there as well. Neither of these systems are expected to pose any significant threat to land.
Dukono, located in Indonesia, continues producing ash that extends up to 7,000 feet. The ash is moving towards the northwest at 5 knots. Tengger Caldera, located in Java, is producing ash that extends up to 10,000 feet. The ash is moving towards the southwest at 5 knots. Finally, Suwanose-Jima, located on Ryukyu Island, is producing ash that extends up to 7,000 feet.
Clusters of thunderstorms will continue from the Ivory Coast eastward across the central portion of the continent. These storms will become the most numerous during the afternoon and evening hours as they drift generally westward. High pressure will dominate the northern portion of the continent where no significant weather is expected. A cold front pushing across the southern portion of the continent will produce little in the way of any significant weather.
A weak trough of low pressure pushing into western Russia will produce a few rain showers along with isolated thunderstorms. The thunderstorms will mainly occur during the afternoon and evening. High pressure will dominate a large portion of central Russia with no significant weather expected. A Few rain showers are likely over extreme northern Russia in association with a stationary front. Low pressure over eastern Russia will produce a larger area of rain and rain showers. The associated cold front will extend southward into southeastern Russia where it will trigger showers and thunderstorms. Additional thunderstorms are likely across Korea as a weak area of low pressure interacts with deep moisture. Isolated afternoon and evening thunderstorms are likely over central China in association with a weak trough of low pressure. High pressure will dominate Japan resulting in generally fair weather.
SOUTHEAST ASIA/NORTH PACIFIC
Isolated thunderstorms can be expected over most of the Philippines in association with deep tropical moisture and daytime heating. Clusters of thunderstorms, some numerous, can be expected across the remainder of Southeast Asia in association with the summer monsoon. Indonesia will also experience scattered thunderstorms. A large area of scattered to numerous thunderstorms will continue over the western Pacific in association with a stationary front. The front will become a cold front that continues northeast to low pressure off the southwest coast of Alaska. High pressure will dominate the eastern Pacific.
A cold front over southwestern Australia will produce little in the way of significant weather. A few rain showers are likely over extreme southeastern Australia in association with low pressure centered well offshore. A few of these showers will extend eastward into extreme southern New Zealand. High pressure will dominate the remainder of Australia eastward across central and southern New Zealand.
Low pressure centered several hundred miles east of the Canadian Maritimes will produce areas of rain and rain showers across the area. The associated cold front will extend southwestward to several hundred miles off the Mid Atlantic coast where it will produce clusters of thunderstorms. High pressure will dominate the eastern North Atlantic where no significant weather is expected. A weak surface trough will produce a few rain showers across the western U.K. Low pressure centered over southern Norway will produce scattered rain showers with isolated thunderstorms likely along the associated cold front across central Europe.
Cold front pushing southward across northwestern Canada will produce a small band of rain showers along it. Isolated afternoon and evening thunderstorms will continue from central Mexico northward across the southern and central Rockies. Additional thunderstorms can be expected over the western Great Lakes region in association with an upper level disturbance. Isolated afternoon and evening thunderstorms will occur along the eastern Gulf and Florida.
Isolated afternoon and evening thunderstorms can be expected over northern South America in association with deep tropical moisture and daytime heating. A cold front pushing into the southern portion of the continent will produce strong winds along with occasional rain showers.
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