Watching the Atlantic Basin Closely
Aug 21, 2014 4:42 PM
Atlantic Basin Maps
National Hurricane Center Outlook
603 ABNT20 KNHC 211957 TWOAT SPECIAL TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 400 PM EDT THU AUG 21 2014 Updated for reconnaissance information For the North Atlantic...Caribbean Sea and the Gulf of Mexico: Data from an Air Force Reserve Hurricane Hunter aircraft indicate that the circulation associated with the small low pressure area approaching the Leeward Islands is poorly defined. In addition, the associated shower activity has decreased during the past few hours. The aircraft did, however, find a small area of tropical-storm-force winds on the northeast side of the low. Environmental conditions are expected to be conducive for some development during the next day or so, and a tropical depression or tropical storm could still form while the system moves west-northwestward at around 20 mph across the Lesser Antilles. The mountainous terrain of Hispaniola could limit development during the first part of the weekend, but conditions are expected to become more conducive for development by Sunday when the system is forecast to move near or over the Bahamas. Regardless of tropical cyclone formation, gusty winds and heavy rainfall are expected across portions of the Lesser Antilles, Puerto Rico, and the Virgin Islands through Friday, and over Hispaniola late Friday and Saturday. Interests in those islands and in the Bahamas should closely monitor the progress of this disturbance. An Air Force Reserve Hurricane Hunter aircraft is scheduled to investigate this system again tomorrow afternoon. * Formation chance through 48 hours...medium...50 percent. * Formation chance through 5 days...high...70 percent. $$ Forecaster Brennan/Blake
The Saffir-Simpson Wind Scale is a categorical classification of hurricanes based on their wind speed, used by the U.S. government's National Hurricane Center.
To qualify as a Category 5 hurricane on the Saffir-Simpson hurricane intensity scale, maximum sustained winds must exceed 155 mph (135 kt).
Hurricanes that have a severe impact on lives or the economy are remembered by generations after the devastation they caused, and some go into weather history.
AccuWeather.com has created a number of specialty maps designed for tracking the progress of tropical storms and hurricanes. Use these maps in conjunction with our Hurricane Position graphic, as well as statements issued by the NHC with storm positions.
Hurricanes (by whatever name) are by far most common in the Pacific Ocean, with the western Pacific being most active. In some years, the Philippines are struck by more than 20 tropical storms and typhoons.