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Surface and near-surface marine observations during Hurricane Andrew
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1993
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[PDF-2.88 MB]
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Description:Hurricane Andrew was a relatively small but intense hurricane that passed through the Bahamas, across the Florida Peninsula, and across the Gulf of Mexico between 23 and 26 August 1992. This paper summarizes the characteristics of this hurricane using observations only. These include (1) marine observations from two NDBC buoys and two C-MAN stations close to the storm track, (2) water levels and storm surge at 15 locations in the Bahamas, around the coast of Florida and along the northern coast of the Gulf, (3) currents, temperature and salinity at a depth of 11 meters in the northern Gulf, and (4), difference maps of sea surface temperature before and after the passage of Andrew, for the Bahamas, the Straits of Florida and the Gulf. Sea level pressure, wind direction, wind speed, wind gust, air temperature and SST were strongly influenced by the hurricane in most cases. Water level was strongly affected by the storm at North Miami Beach where a record high occurred. Major decreases in water level occurred along the west coast of Florida with a maximum surge of -1.2 meters at Naples. Major increases in water level occurred at several locations along the Gulf coast between the Florida panhandle, and Louisiana. At Bay Waveland, Mississippi, for example, a storm surge of +1.2 meters was observed. Significant changes in other environmental parameters were also produced by the passage of Andrew. Current meter data at one location along the hurricane track in the northern Gulf (28.4°N, 90.5°W) indicated that current speeds at a depth of 11 meters increased from -15 cm/sec to almost 140 cm/sec during passage of the storm. Temperature at this depth decreased by almost 4°C and salinity increased by 2.0 to 3.0 ppt. Finally, difference maps of satellite derived SST for the period 18 to 29 August showed decreases of 1-2°C at various locations along, and just north of, the storm track.
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Content Notes:L. C. Breaker, L. D. Burroughs, J. F. Culp N. L. Guinasso, Jr., R. L. Teboulle and C. R. Wong.
"July 1993."
"This is an unreviewed manuscript, primarily intended for informal exchange of information among NMC staff members."
Also available online in PDF via the NOAA Central Library.
Includes bibliographical references (pages 35-37).
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