Monday, October 27, 2014

Partly Sunny with Moderate Winds and Seas - TS Hanna Forms

The CoCoView Resort Weather Forecast
This weather forecast is intended for CoCoView Resort guests and applies only to the south side of Roatan
CoCoView is at 16.4°N Latitude x 86.4°W Longitude
in the
   NW Caribbean Sea

             CoCoView Resort, www.cocoviewresort.com , 800-510-8164

How to use this page:
The title of each of the figures below is linked to the page where the information originates.
Since I write and post early in the day and generally do not update the page until the next morning; by clicking on the link, it allows you, the viewer, to get the latest information.
This is not only convenient but allows you to track weather events such as cold fronts and hurricanes from a single web page.
In addition, in the right column is a very useful widget. It is a trip planner...yesteryear's weather at a glance.This widget lets you check historic weather for your trip dates.

2014 Hurricane Outlook and Forecasts
The hurricane season in this hemisphere starts on June 01 and ends on November 30.
During that time frame, for your convenience, you will find a section below titled, "Tropical Weather Outlook".
It will contain the daily tropical storm outlook, forecast and storm track(s).

NOAA predicts near-normal or below-normal 2014 Atlantic hurricane season.
El Niño is expected to develop and suppress the number and intensity of tropical cyclones.
This year, the Saharan Air Layer (SAL) has been decreasing in size and density since May 21, 2014. This is important because it has been postulated, that the SAL, a cool, dry, layer of air which contains particles, may inhibit the formation of tropical storms and hurricanes. In addition, as it decreases in size and density, the probability of tropical storm formation may increase.

The outlook calls for a 50 percent chance of a below-normal season, a 40 percent chance of a near-normal season, and only a 10 percent chance of an above-normal season.  For the six-month hurricane season, which begins June 1, NOAA predicts a 70 percent likelihood of 8 to 13 named storms (winds of 39 mph or higher), of which 3 to 6 could become hurricanes (winds of 74 mph or higher), including 1 to 2 major hurricanes (Category 3, 4 or 5; winds of 111 mph or higher).
These numbers are near or below the seasonal averages of 12 named storms, six hurricanes and three major hurricanes, based on the average from 1981 to 2010. The Atlantic hurricane region includes the North Atlantic Ocean, Caribbean Sea and Gulf of Mexico.

Monday, October 27, 2014
Today, skies will be partly cloudy. Winds will be northerly in direction at 10 mph to 15 mph or less. Seas will be moderate to calm at 1 to 4 feet. The air temperatures will range from the mid to high 70s (ºF) to the mid to high 80s (ºF) or 24ºC to 26ºC. Ocean water temperatures are 82°F to 84°F or 24ºC to 25ºC. Visibility is 20 to 80 ft.
There is a chance of scattered rain showers and isolated thunderstorms, as a low pressure system moves over the area later today and tomorrow.






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Fig 19 - Recent changes in the Saharan Air Layer



The Tropical Weather Outlook
The Tropical Weather Update_141027_9:45 CST
1. Updated: The small low pressure system, the remnants of Tropical Depression Nine, is producing a concentrated area of thunderstorms along and just east of the coasts of northern Nicaragua and eastern Honduras. This system has continued to become better organized, and satellite-derived wind data overnight indicates that this system has tropical-storm-force winds on the west side of the circulation. As a result, the low has been upgraded to Tropical Storm Hanna. Tropical storm warnings are in effect from Punta Patuca, Honduras to Puerto Cabezas, Nicaragua.
* Formation chance through 48 hours...high...100 percent.
* Formation chance through 5 days...high...100 percent.
2. Tropical Storm Hanna near 14.5N 83.2W 1005 mb at 1500 UTC Oct 27 moving W-SW or 250 deg at 6 kt. Maximum sustained winds 35 kt gusts 45 kt. Hanna is forecast to move SW and inland today...weakening to a tropical depression before dissipating by Tue morning. A tropical wave over the E Caribbean will continue W through the central Caribbean on Wed and Thu reaching the W Caribbean on Fri. A second tropical wave S of 20N along 54W will pass W through the tropical Atlantic waters today and tonight...and pass through the E Caribbean on Tue and Wed reaching the central Caribbean on Thu and Fri. The N portion of this second wave will continue NW through the Leewards on Wed and Thu reaching the Puerto Rico area on Fri.
3. All interests in the Bay Islands and on the North Coast of Honduras should monitor this system closely as it tracks westward.

Tropical Storm Hanna Forms Near Nicaragua

By: Dr. Jeff Masters , 2:39 PM GMT on October 27, 2014
The 2014 Atlantic hurricane season kicked out another surprise, as Tropical Storm Hanna formed Monday morning off the coast of Nicaragua just six hours after NHC gave the system a 10% chance of development in their 2 am EDT Tropical Weather Outlook. Surface winds measured overnight by the ASCAT satellite showed sustained winds of 40 mph occurring off the northeast coast of Nicaragua, and visible satellite images just after sunrise on Monday morning confirmed the presence of a low-level surface circulation, prompting NHC to begin issuing tropical storm advisories. Hanna will be a short-lived storm. With a motion west-southwest at 7 mph, the center of Hanna will be over land on Monday afternoon, and passage over land should make the storm dissipate by Tuesday afternoon. The main threat of Hanna is heavy rains of 10 - 12" that will cause flash floods and mudslides over northeastern Honduras and Nicaragua. This portion of Nicaragua is still recovering from torrential rains last week that killed 24 people on October 20. As of 10 am EDT Monday, Puerto Lempira in northeast Honduras had received 0.71" of rain from Hanna.


Figure 1. Latest satellite image of Hanna.

Hanna's formation date of October 27 comes more than a month later than the typical September 24 formation date of the season's eighth named storm. Hanna gives the Atlantic 8 named storms, 6 hurricanes, and 2 major hurricanes so far in 2014. Between 1966 - 2009, the Atlantic averaged 11 named storms, 6 hurricanes, and 2 major hurricanes, so we are close to average in two of the three categories--hurricanes and major hurricanes. However, those hurricanes have not been as strong or long-lasting as usual, and the Accumulated Cyclone Energy (ACE) so far in 2014 is 65 units, which is well below the 110 units that occurs in a typical year.



 

 Fig 21a - Graphical 5 Day Tropical Weather Outlook

Fig 23 - 48 Hour Tropical Storm Probability


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 Fig 26 - Storm Statistics  TS Hanna
low tide 4:24 am LT                Moon Rise – 8:00 am LT
high tide 11:46 am LT             Moon Set –8:41 pm LT
low tide 5:41 pm LT                Sunrise – 5:42 am LT
high tide 10:36 pm LT             Sunset – 5:20 pm LT


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