Tranquility

Tranquility
Sunset in a Senegalese Village

Thursday, October 16, 2014

Hurricane Gonzalo to Strike Bermuda on Friday


hurricane Gonzalo October 16, 2014 at 545 AM EST



This morning hurricane Gonzalo is a category 4 storm with winds of 140 MPH and expected to move over Bermuda in the next 36-48 hours.  Hurricane warnings are up for Bermuda

A HURRICANE WARNING IS IN EFFECT FOR...
* BERMUDA

A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
WITHIN THE WARNING AREA. PREPARATIONS TO PROTECT LIFE AND PROPERTY
SHOULD BE RUSHED TO COMPLETION TODAY.
NHC official track for Hurricane Gonzalo

Depending on where the storm passes Bermuda, the country may experience both a strong storm surge and winds which may bring significant damage to the country.  The current projection is the the storm will pass over or just to the left of the island. Passage to left of the Island would produce the strongest winds and most likely a higher surge.  However looking at the elevation map of Bermuda there appears to be some level of protection from the surge.  The two largest cities (Hamilton and St. George) are likely to be spared damage from surge because of their positions.
Topographic map of Bermuda (source Wikipedia)


However, there is still likely to be damage if hurricane Gonzalo passes over Bermuda as a major hurricane.    Because Bermuda is a tourist location, many of the assets around this industry may suffer some degree of damage. The picture below suggest that with the mix of land and sea that damage is likely by both wind and waves even if there is blockage by mountains in the south.

Bermuda (source Wikipedia)

Numerous hurricanes have come close to Bermuda in the past with most causing little or no damage.  However in 2003, Hurricane Fabian passed very close to Bermuda causing an estimated 300 million dollars in damage.  Maximum sustained winds of 120 MPH were noted.
Track of Hurricane Fabian September 2003 

Visible Image of Hurricane Fabian September 2003

Fabian passed just to the west of Bermuda and it is very possible that hurricane Gonzalo may have also have a similar path.


The next 24-36 hours will be a very tense time for the people of Bermuda.  Let's hope and pray that they are prepared for this significant hazard.

Tuesday, October 14, 2014

Rapid Intensification for Hurricane Ganzalo -- may deal Bermuda a blow later this week




Hurricane Gonzalo at approximately 5:15 AM EST October 14th 


Overnight Tropical Cyclone went from being a minimum category 1 hurricane (85 MPH winds at 11 PM) and is now on the verge of being a major hurricane.  Maximum Sustained winds of 110 mph are estimated (5 AM) and further strengthening is likely today.  Hurricane Gonzalo is in a weak shear environment making development likely.   Current forecast suggest that Gonzalo may have winds of 130 MPH in 36 hours bringing it to near Category 4 status.  While the storm is currently out over the ocean and not threatening any land areas, the forecast track will take the hurricane Gonzalo close to Bermuda later on this week in into the weekend.  Even if the storm is moving rapidly as a major hurricane (3 or higher) it may still have a negative impact  on the infrastructure of Bermuda.  This late season hurricane is worth watching as its undergone rapid intensification over the last day which the best hurricane models have trouble dealing with.


Current Track for Hurricane Gonzalo (Tuesday October 15th)

Sunday, October 12, 2014

Late Season Hurricane Surge in the Atlantic


2014 Atlantic Tropical Cyclones 

With an evolving El Nino during the summer season, below normal hurricane activity had been forecasted for the Atlantic ocean basin.   A late start to the wet season in West Africa and continuous surges of Saharan dust provided poor environmental conditions in the Eastern and Central Atlantic Ocean Basins during August and September.  While I expected the Saharan Air Layer to weaken in late August, it never did.   We had 4 hurricanes (One being a major hurricane) and 1 tropical storm.

The Pacific Ocean basin on the other hand has been very active with numerous cyclones in the Eastern, Central and Western basins.  

2014 Eastern Pacific Cyclones

Tropical Cyclone Odile had a major impact in Mexico impacting resort areas of Mexico such as Cabo San Lucas.
Damage from Tropical Cyclone Odile

By the middle of September, it was assumed that increased wind shear would limit any Atlantic  tropical cyclones.  However, over the last week we have had two tropical disturbances develop over the Atlantic.    Hurricane Fay formed this weekend impacting Bermuda and Tropical Storm  Gonzalo approaching the Windward Islands.


NHC Active Tropical Cyclones (Sunday Oct. 12)





Track of Tropical Storm Gonzalo

Tropical Storm Gonzalo is expected to intensify over the next few days and tropical storm warnings are up for many of the Caribbean nations including Puerto Rico.  Gonzalo may become a major hurricane in a few days when it is out over the open Atlantic.   So you never know, but one thing that is certain, is that Saharan dust intensity has weakened considerably over last week giving tropical cyclones a better chance to develop.

Saharan Air or lack of it (Sunday October 12)


The Atlantic Tropical Season is almost over, but not yet.  Don't forget that Hurricane Sandy came up the East coast in late October causing major damage and loss of life.   Even if it is an El Nino year, the hurricane season is not officially over until November 30th.  Don't be caught off guard.