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08-31-2015, 09:24 PM
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Sounds like the "Pineapple Express " if it isn't just speaking of a line of hurricanes/ tropical storms.
The weather pattern most likely to trigger heavy rainfall events is the "Pineapple Express". In winter, a high-pressure system over the Gulf of Alaska blocks the polar jet stream, which may split and form a southerly branch across the mid-Pacific. This polar high may weaken and shift westward, forcing this southern branch even further south to form a subtropical jet. As it flows around the blocking high, the subtropical jet heads northeastward, across or near the Hawaiian Islands. On its track through the tropics, the air mass warms and gathers moisture. Once formed, the Pineapple Express may persist for several days to more than a week, delivering copious, intense rainfall.
http://www.theweatherprediction.com/weat...index.html
Sounds like the "Pineapple Express " if it isn't just speaking of a line of hurricanes/ tropical storms.
The weather pattern most likely to trigger heavy rainfall events is the "Pineapple Express". In winter, a high-pressure system over the Gulf of Alaska blocks the polar jet stream, which may split and form a southerly branch across the mid-Pacific. This polar high may weaken and shift westward, forcing this southern branch even further south to form a subtropical jet. As it flows around the blocking high, the subtropical jet heads northeastward, across or near the Hawaiian Islands. On its track through the tropics, the air mass warms and gathers moisture. Once formed, the Pineapple Express may persist for several days to more than a week, delivering copious, intense rainfall.
http://www.theweatherprediction.com/weat...index.html