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        1997 PRELIMINARY 
        REPORTS  |  
       
 a. Synoptic HistoryAna formed as a tropical depression from a frontal low pressure 
        system just off the coast of South Carolina on 30 June. It moved slowly 
        eastward and became a tropical storm with 46-mph sustained winds on the 
        next day even as vertical wind shear limited convective development near 
        the center of the low-level circulation. A deepening short-wave trough 
        moved to eastern North America and accelerated the storm toward the northeast 
        on the 2nd and 3rd. On 4 June, Ana became extra-tropical while moving 
        over colder water and then dissipated. Ana did not affect land. b. Meteorological StatisticsA USAF Reserve reconnaissance aircraft flew into Ana on the 
        afternoon of 1 July and measured a 62-mph wind speed in the northeast 
        quadrant at 1500 feet and a minimum surface pressure of 1000 millibars. 
        These values are the basis for the maximum 1-minute surface wind speed 
        of 46 mph and the minimum sea level. c. Casualty and Damage StatisticsThere were none. 
     Maximum 
          Intensity For Tropical Storm Ana 
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