Effects of Hurricane Maria, Bubble of High Pressure, and Tracking the Tropics… Again!


Hurricane Maria, located in the top left of the radar shot from Bermuda, is racing away from the island only bringing some gustly showers.

 

 

Tropical Storm Maria strengthened into a Hurricane as she passed around 130miles to our west. Winds of 39mph were briefly recorded at the airport, with a gust to 50mph. Much less banding on the eastern side developed than was anticipated, and the threat for tornadoes was thus reduced. This also led to a lack of high winds as there was a lack of squalls to produce them.

Commissioner’s Point recorded a peak sustained wind of 60mph with a gust of 69mph. Keeping in mind that this station if elevated around 260ft above sea level.

Maria went on to make landfall in Newfoundland just before becoming extra-tropical, it did so in a similar location to Igor of last year, but her impacts were much less significant. St. John’s did gust over 60mph, and there was some flooding due to heavy rains, however.

The inclement weather left behind by both Hurricanes Katia and Maria has cleared away leaving a bubble of high pressure over Bermuda. This high pressure is producing pleasant weather for Bermuda and it is expected to retain its influence over Bermuda until at least Wednesday night when the high begins to break down and shift eastward. The flow around this high pressure is bringing summer-like heat and humidity for the first week of fall with heat indices between 95F and 105F. Some patchy fog is possible on calm mornings in valley locations.

Watching the Tropics:

If the bubble of high pressure breaks down and moves away to the east as forecast, it could allow Tropical Storm Ophelia to move northwards towards us. So Ophelia may be one to keep an eye on for the end of the upcoming week (Around the 30th September).

Tropical Storm Phillippe formed this afternoon and could become a hurricane in the next 3 days. Its long term track is highly uncertain, and the entire Atlantic needs to keep a wary eye on the storm.

Typhoon Roke making landfall on Kanto, Igame from JMA radar

Meanwhile, Typhoon Roke struck Japan with 85mph sustained winds, and brought a gust of 91mph to metro Tokyo last week. Extensive flooding occurred due to heavily saturated grounds from previous very wet cyclones; almost one a week for a month prior. Large evacuations for the landfall area were issued, and public transit was interrupted due to the storm. The western Pacific is active again with Tropical Storm Nesat which could become another major storm before hitting the Phillipines. After that, it could move into the south China sea and become a threat to areas like Hong Kong.

Currently a category 4 hurricane Hilary is being watched closely by Mexico’s Baja peninsula and points east as the storm is expected to recuve in that direction in the next week, but as a much weaker storm due to cooler waters and higher wind shear.

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