 In its developmental stages , Janet caused $ 7 @.@ 8 million in damage to the Lesser Antilles and 189 deaths in the Grenadines and Barbados . While Janet was in the central Caribbean Sea , a reconnaissance aircraft flew into the storm and was lost , with all eleven crew members believed to be perished . This remains the only such loss which has occurred in association with an Atlantic hurricane . A Category 5 upon landfall on the Yucatán Peninsula , Janet caused severe devastation in areas of Quintana Roo and British Honduras . Only five buildings in Chetumal , Mexico remained intact after the storm , and an estimated 500 deaths occurred in the Mexican state of Quintana Roo . At Janet 's second landfall near Veracruz , significant river flooding ensued , worsening effects caused by Hurricanes Gladys and Hilda earlier in the month . The floods left thousands of people stranded and killed at least 326 people in the Tampico area , leading to the largest Mexican relief operation ever executed by the United States . 
