Two low-pressure systems associated with tropical waves could strengthen into tropical depressions over the next day of so, the National Hurricane Center said Monday. One low pressure system is centered about 100 miles east of the southern Windward Islands (Dominica, Martinique, Saint Lucia, Saint Vincent, the Grenadines and Grenada), while the other system is located about 650 miles southwest of the Cape Verde Islands. The NHC will name the next two tropical storms Karen and Lorenzo. A tropical storm has winds of 39 to 73 miles per hour. The Windward system is moving northwestward at about 15 mph. It will likely reach the Windward Islands later Monday before passing the Leeward Islands (Virgin Islands, Anguilla, St Martin, Saba, Antigua, Barbuda, Saint Kitts, Nevis, Montserrat and Guadeloupe) as it marches northwest toward the Greater Antilles (Cuba, Jamaica, Hispaniola and Puerto Rico) over the next five days or so. The energy market watches for tropical storms in the Gulf because they can disrupt U.S. oil and natural gas production and refining there. Commodities traders also track tropical storms because they can damage citrus crops in Florida and such crops as cotton along the Gulf Coast. It is too soon to say whether the Windward system will reach the Gulf of Mexico, according to the weather models. The Cape Verde system, meanwhile, was moving west-northwest at about 15 mph. Five of the major weather models show the Cape Verde system will still be in the Atlantic in about five days. Two models show the storm approaching the islands in the eastern Caribbean and three models show the storm turning toward the north possibly away from North America. Reprinted from msn