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Old 09-02-2008, 02:08 PM   #1
CanisLupusArctos
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Default Watching the Tropics - 2008

We've had a very rainy summer with high lake level and lots of local flood damage. Fall is now here, which brings the peak of the hurricane season. History shows it is not unusual at all for hurricanes, tropical storms, or their remnants to come here.

We need to be watching the tropics. R2B brought this up in an earlier post at the beginning of hurricane season and brought out some good points at that time. It's now time to revisit them.

Background info... the Hurricane of 1938 caused a great deal of landslide damage in the White Mountains, and the Mt. Washington Cog RR was one casualty of that storm. More recently, Tropical Storm Floyd in 1999 took a coastal track. Not much happened in coastal NH, closer to the storm's center, but local topography in the Lakes Region enhanced the wind to the point where it blew down hundreds of trees around the northwestern end of the lake. Remnants of Tropical Storm Bonnie in 2004 produced a tornado over Meredith, along with extremely heavy downpours. Repeating - even remnants of tropical systems can produce damage.

This year I would be most concerned about heavy rains which are the most common element of tropical remnants. They can and often do produce strong wind gusts also. The area has been weakened by both elements this summer. As a result, the area's tolerance for either one is low. Wind or rain that wouldn't normally be damaging could prove damaging now. Trees around here have felt strong wind gusts from thunderstorms all summer long and tree damage has been occurring at lower and lower wind speeds with time. Many of last month's washouts have only been temporarily repaired.

The Atlantic is now very active with tropical systems. First we need to watch Hanna, which is likely to hit us this coming weekend with remnants. It is expected to take an inland track, but there is a small chance NH could get winds of tropical storm force from it.

On its heels are Ike and Josephine. Both are on tracks that could take them up the East Coast IF the weather systems around them steered them this way. In the last couple of weeks we have seen the high pressure (big blue H) hanging around the east coast. It means good weather when it's nearby, and that's what we've had. It has a clockwise circulation (opposite that of a storm, a low pressure center.) When the high pressure sets up off the east coast, the circulation brings warm air up from the south and we have sunny skies to go along with it. We call that "Bermuda High" because the center of it, which we mark with the big blue H, sets up between NC and Bermuda. The clockwise flow around the high may give us nice weather, but it also grabs tropical systems from the Caribbean and helps steer them up the coast at us.

This thread is for discussing of tropical systems that could hit or have already hit NH.
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