Belize Tropical Weather Outlook: January 23, 2018

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Area wind information

Belize NMS Forecast

January 23, 2018

Tropical cyclone formation is not expected in the North Atlantic, Caribbean Sea or Gulf of Mexico during the next 48 hours.

Tropical Atlantic Wide Infrared Satellite Image:

USA National Weather Service Forecast

January 23, 2018

For the North Atlantic...Caribbean Sea and the Gulf of Mexico:

Tropical cyclone formation is not expected during the next 5 days.

Routine issuance of the Tropical Weather Outlook will resume on June 1, 2018. During the off-season, Special Tropical Weather Outlooks will be issued as conditions warrant.

Tropical Weather Discussion

...Special features...

Caribbean Gale Warning: The combination of high pressure in the central Atlantic and lower pressures over northern Colombia will allow trades in the SW Caribbean near the coast of Colombia to reach minimal gale force overnight then subside back to strong by noon Tuesday. Seas are expected to build to 10-13 ft in this area. Winds are expected to pulse back to gale force again late Tue night into Wed morning. Model guidance indicates that the pulsing to minimal gale will continue each night through the weekend. Please see latest NHC High Seas Forecast under AWIPS/WMO headers MIAHSFAT2/FZNT02 KNHC for more details.

Gulf of Mexico Gale Warning: Gale force winds are forecast to commence Tue afternoon in the SW Gulf behind a cold front that is across the western Gulf. The cold front will reach from the Florida Big Bend to the eastern Bay of Campeche Tue morning, from the Straits of Florida across the Yucatan Peninsula to Veracruz Mexico Tue night, then move SE of the area on Wed. Minimal gale force NW to N winds are likely near the coast of Veracruz Tue afternoon, then diminish slightly Tue night. Gale force winds may return briefly to the same area Wed night, then diminish significantly on Thu. Please see the latest NHC High Seas Forecast under AWIPS/WMO headers MIAHSFAT2/FZNT02 KNHC for more details.

...The Caribbean Sea...

Diffluence aloft supports isolated showers over portions of the SW Caribbean. Fresh to strong east winds are noted in the latest scatterometer data over much of the central Caribbean, with the strongest winds near the coast of Colombia. Moderate to fresh trades are noted elsewhere across the basin. The pressure gradient associated with high pressure north of the area should support fresh to strong NE to E trades W of about 70W elsewhere through late Wed night. Strong NE winds are expected through the Windward Passage after Wed. A cold front in the Gulf of Mexico will enter the NW Caribbean Wed night, followed by increasing strong NE winds and seas building to around 10 ft.

Climate Prediction Center’s Central America Hazards Outlook

48 Hour Forecast – Favorable Environmental Conditions For Tropical Development

Infrared Satellite in Belize City

The 2017 Hurricane Season has ended


120 Hour Forecast – Favorable Environmental Conditions For Tropical Development

A Very Early Look At The 2018 Atlantic, Gulf Of Mexico & Caribbean Hurricane Season
Rob Lightbown of Crown Weather Services

January 17, 2017

I know it’s early, but I wanted to go over what I’m already looking at in terms of signals for the 2018 Atlantic Hurricane Season. Based on everything I have looked at, including ENSO forecasts and sea surface temperature forecasts, I have concerns that the 2018 Atlantic Hurricane Season could be another active one with activity either similar to 2017 or possibly even a little more active.

The latest ENSO model guidance is pointing towards La Nina conditions for this winter with conditions warming towards neutral ENSO conditions by late Spring, 2018. If we do see neutral ENSO conditions during the 2018 Hurricane Season, it could mean a very active season. With that said, ENSO forecasts this time of year can be highly inaccurate. For example, at this time last year, the various ENSO models were forecasting for a El Nino during the 2017 Hurricane Season and in the end we ended up with no El Nino conditions to speak of. It should also be noted that it is rare for a La Nina to quickly transition into a El Nino and normally there is at least a year with neutral ENSO conditions. Based on this, all-in-all, I envision a scenario where we see neutral ENSO conditions throughout much of 2018.

Looking at ocean water temperatures across the Atlantic Basin, temperatures north of 20 North Latitude are above average with near average sea surface temperatures from Zero to 20 North Latitude. If we see this type of temperature structure next year during the hurricane season, it could lead to a less active season than 2017. On the other hand, if we see significant warming across the Main Development Region like we saw during summer of 2017, then a busy to very busy season could be in the offing.

Finally, the CFS model is indicating that there could be below average wind shear conditions across a large part of the Atlantic during June and July and lighter than average wind shear conditions across the central and western Caribbean, the Gulf of Mexico and the western Atlantic during August of 2018. This wind shear forecast has support from the CanSIPS climate model and this could mean conditions may be very supportive for significant tropical cyclone development during the 2018 Hurricane Season.

Here Are My Thoughts: Every piece of data that I have looked at suggests that the 2018 Atlantic Hurricane Season could be quite active and I don’t see anything right now that suggests that it’ll be a quiet season. The combination of neutral ENSO conditions and the fact that we are still in the active phase of the Multi-Decadal Oscillation leads me to believe that we will probably see above active activity.

I think that we could see the following for the 2018 Atlantic, Gulf of Mexico and Caribbean Hurricane Season: 17 Named Storms, 8 of those storms becoming Hurricanes and 3 of those of hurricanes becoming Major Hurricanes. The reason why I’m not forecasting a busier season is due to the significant uncertainty with the ENSO models and a currently less than favorable sea surface temperature profile setup. If we do end up seeing very favorable conditions materialize, then we could see higher numbers than what I am currently forecasting.

As for possible storm tracks during the 2018 Hurricane Season – The track cluster during the 2017 Hurricane Season was further west and slightly more south than the 2016 Season. This is a trend that began in 2015 and is concerning because I think the track cluster during the 2018 Hurricane Season could end up being further west and south than the 2017 Season. This means that the Caribbean and Gulf of Mexico could be at particular risk from tropical storms and hurricanes during the 2018 Hurricane Season. In addition, the Bahamas and south Florida could also be at risk again during 2018 for a tropical storm or hurricane landfall.

I will be monitoring the various model guidance members and long range signals for the 2018 Atlantic Hurricane Season throughout the next 6 months and will have updates for you as conditions warrant.

Good Riddance to the Brutal Atlantic Hurricane Season of 2017
Jeff Masters, Category 6

November 30, 2017

The Atlantic hurricane season, which officially runs from June 1 to November 30, has finally drawn to a close. The brutal 2017 season was an awful reminder of the huge hurricane vulnerability problem we face, and how unprepared we are for a potential future where the strongest storms get stronger and push their storm surges inland on top of steadily rising sea levels. Much of the Caribbean lies in ruins after the terrific beatings administered by the twin demon Category 5 hurricanes of 2017, Irma and Maria, and a monumental clean-up continues in Texas and Florida from two strikes by Category 4 hurricanes, Harvey and Irma. And though final estimates are not yet completed, 2017 is certain to rank as one of the top three most destructive Atlantic hurricane seasons ever, thanks to three of the top ten most damaging hurricanes ever seen—Harvey, Irma, and Maria. One preliminary damage assessment puts the U.S. damage from these three storms at $207 billion, with another $25 billion in non-U.S. damage. We are lucky the damages weren’t $50 - $100 billion higher; had Hurricane Irma tracked just 20 miles farther to north, missing Cuba, I’m convinced it would have been a catastrophic Category 5 storm in South Florida.

2017 hurricane tracks
Figure 1. Preliminary track map for the 2017 Atlantic hurricane season.

The three great hurricanes of 2017 also killed large numbers of people. The preliminary death toll from Harvey is 84, and is 95 from Irma. Hurricane Maria, though, may be responsible for over a thousand deaths. New research that has not yet gone through peer-review puts the indirect death toll from Maria in Puerto Rico at 1,085 and rising, according to a story published Wednesday at This does not include indirect deaths in the U.S. Virgin Islands, which were hit even harder than Puerto Rico. As we discussed in detail last week, the greatest number of indirect deaths on record for a hurricane is 500, for Hurricane Katrina of 2005. The official death toll in Puerto Rico from Maria is 58, with at least 26 of these being direct deaths (due to drowning or wind-related effects). The hurricane is also being blamed for over 40 other direct deaths along its path, including 31 in Dominica.

Figure 2. GOES-16 visible image of Maria approaching Dominica just before sunset, at 5:17 pm EDT September 18, 2017. At the time, Maria was a rapidly intensifying Category 3 hurricane, with top winds of 130 mph. Less than six hours later, it struck Dominica as a 160-mph Category 5 storm. Image credit: NOAA/RAMMB.

Twenty-three landfalls by the Atlantic storms of 2017

The 2017 hurricane season was exceptional for having three major hurricanes that all hit land at peak strength: Category 4 Harvey (Texas, with 130 mph winds); Category 5 Irma (Barbuda, Sint Martin and the British Virgin Islands, with 185 mph winds); and Category 5 Hurricane Maria (Dominica, with 160 mph winds.) At least 23 separate landfalls by named Atlantic storms occurred in 2017 (plus one by the hurricane-strength post-tropical Ophelia in Ireland):

Bret:  Trinidad (40 mph, Jun 19)
Cindy:  East of Port Arthur, TX (45 mph, Jun 22)
Emily:  Anna Maria Island, FL (45 mph, Jul 31)
Franklin:  Pulticub, Mexico (60 mph, Aug 7); Lechuguillas, Mexico (85 mph, Aug 10)
Harvey:  North of Port Aransas, TX (130 mph, August 25); Holiday Beach, TX (130 mph, August 26); west of Cameron, LA (45 mph, August 30)
Irma:  Barbuda, Sint Maarten, and British Virgin Islands (185 mph, September 6); Little Inagua, Bahamas (160 mph, September 8), Camaguey Islands, Cuba (160 mph, September 8); Cudjoe Key, FL (130 mph, September 10); Marco Island, FL (115 mph, September 10); Naples, FL (115 mph, September 10)
Katia:  North of Tecolutla, Mexico (75 mph, September 8)
Maria:  Dominica (160 mph, September 18); Yabucoa, PR (155 mph, September 20)
Nate:  Mouth of MS River (85 mph, October 7); Biloxi, MS (85 mph, October 8)
Ophelia:  Southwest Ireland (as near-hurricane-strength post-tropical cyclone, October 16)
Philippe:  South coast of Cuba (35 mph, October 28); Florida Everglades (45 mph, October 29)

Harvey rain
Figure 3. Storm-total rainfall from Hurricane Harvey, August 24 – 31, 2017. Harvey dumped over 40” (yellow colors) in Houston, with isolated amounts in excess of 50” (pink colors) south of Houston and northwest of Port Arthur. Image credit: NOAA.

Highlights of the 2017 Atlantic hurricane season

Dr. Phil Klotzbach (CSU) released his end-of-the-season summary on Thursday; below are a few of his highlights, mixed in with some of my own:

• 2017 tied for 9th place for most named storms (17), tied for 8th place for hurricanes (10), tied for 3rd place for major hurricanes (6), and came in 7th place for Accumulated Cyclone Energy (226).
• The 2017 Atlantic hurricane season got off to an early start on April 20, with the formation of Tropical Storm Arlene in the remote Eastern Atlantic, about 800 miles east of the Azores Islands. Arlene was only the second Atlantic tropical storm on record to form in April, the other being Tropical Storm Ana (2003).
• Harvey’s landfall in Texas on August 25 was the first major hurricane to make continental United States landfall since Wilma in 2005, ending the record-long major hurricane landfall drought at 4323 days.
• Harvey lasted 117 hours as a named storm after Texas landfall, shattering the old record for named storm longevity after Texas hurricane landfall set by Fern (1971) at 54 hours
• Harvey broke the tropical cyclone-generated United States rainfall record. Over 60” of rain fell in Nederland, Texas, breaking the old United States record of 52” in Hawaii set by Hurricane Hiki in 1950.
• Irma’s maximum intensity of 185 mph was the greatest for an Atlantic hurricane outside of the Gulf of Mexico and Caribbean on record, and is tied as the second strongest Atlantic hurricane, topped only by Allen (1980) in the Caribbean (190 mph). Two other hurricanes have notched 185-mph winds in the Caribbean: Gilbert (1988) and Wilma (2005). The Labor Day hurricane of 1935 hit the same peak winds in the Florida Straits.
• Irma maintained an intensity of 185 mph for 37 hours – the longest any cyclone around the globe has maintained that intensity on record (old record: 24 hours set by Haiyan in 2013.)
• Irma and Harvey marked the first time that two Category 4 hurricanes have made continental United States landfall in the same year.
• Irma’s Florida Keys’ landfall pressure of 929 mb was tied with the Lake Okeechobee Hurricane of 1928 for the 7th lowest on record for a continental US hurricane.
• Irma effectively destroyed the island of Barbuda in the Leeward Islands, forcing all 1,800 inhabitants to leave, making the island unpopulated for the first time in 300 years.
• Maria’s lowest central pressure of 908 mb was the lowest on record for a hurricane in the eastern Caribbean (<=20°N, 75-60°W).
• Maria intensified 70 mph in 18 hours. Only Wilma (2005), Felix (2007) and Ike (2008) have intensified more in 18 hours.
• Maria was the first Category 5 hurricane on record to make landfall in Dominica.
• Maria was the first Category 4 hurricane to make landfall in Puerto Rico since 1932, and the strongest hurricane to make landfall in Puerto Rico since 1928.
• Maria caused the largest and longest power outage in U.S. history: an island-wide power outage for all of Puerto Rico’s 3.4 million people and the 103,000 people in the U.S. Virgin Islands. As of November 30, 35% of Puerto Rico’s 1.5 million customers still did not have power, 6% had no water service, and 27% of the island’s cell phone towers were not working. In the U.S. Virgin Islands, more than half of the residents had no power.
• Nate’s 12-hour-averaged translation speed of 28 mph was the fastest 12-hour-averaged translation speed in the Gulf of Mexico on record.
• Hurricane Ophelia was a major hurricane until it reached 18.3°W, making it the most easterly major hurricane on record.

But is the 2017 hurricane season really over?

While November 30 is the official last date of the hurricane season, the atmosphere sometimes has other ideas about when the season should really end. Since 1851, there have been eleven seasons in the Atlantic and two in the Eastern Pacific that have seen named storms form in December. Here’s a list of those seasons that have occurred since 1995:

2003 – Tropical Storm Odette formed on December 4, and Tropical Storm Peter formed on December 7.
2005 – Tropical Storm Zeta formed on December 30
2007 – Tropical Storm Olga formed December 11
2013 – An Unnamed Subtropical Storm formed on December 5

Eastern Pacific:
2010 – Tropical Storm Omeka formed on December 18 (in the Central Pacific region)

Our three reliable computer models for forecasting tropical cyclone genesis—the GFS, European, and UKMET models—have not been hinting at any December tropical cyclone formation in any of their recent runs. However, sea surface temperatures are warmer than average throughout the tropical Atlantic, and we cannot dismiss the possibility that a hyperactive hurricane season like 2017 might have a Tropical Storm Sean in store for us later in December.

CLICK HERE for the website for Belize National Emergency Management Organization (NEMO)

Tropical Atlantic Wide Visible Satellite Image

Last edited by Marty; 10 hours ago.