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### Saltwater Wildlife Publications The presence of a red tide in northwest Florida during the fall of 1999 is summarized by date, location, cell counts, and effects. SUMMARY OF RED TIDE IN NORTHWEST FLORIDA Fall 1999 Date (1999) Locations Map Cell Counts Effects August 5 Mexico Beach

St. George Island Reports of dead fish August 8-13 Cape San Blas

Mexico Beach very low very low August 17- 18 Mexico Beach

St. Joe Beach low very low Shellfish harvesting

areas (SHAs) closed in St. Joseph Bay August 21 St. Joseph Bay Dead dolphins and sea turtles August 23- 26 St. Joe Beach

Gulf to Bay counties very low very low Dead fish and

discolored water SHAs closed in Apalachicola Bay August 31- September 3 St. Joseph Bay

St. Vincent Island low very low Respiratory irritation

Dead fish off Bay County September 7 -10 St. Vincent Island

St. Joseph Bay Panama City medium medium to high medium to high SHAs opened in

Apalachicola Bay

September 13-18 St. Vincent Island

St. Joseph Bay Panama City Offshore of Panama City very low low to medium high low to medium September 17-23 St. Joseph Bay

Cape San Blas Choctawhatchee Bay low low to medium low to medium September 19-25 St. Joseph Bay

St. Andrew Bay to east Choctawhatchee Bay very low low to medium Bloom moving to the west

September 26-October 2 St. Joseph Bay

Destin area
Pensacola Bay very low very low to high SHAs closed

Choctawhatchee Bay Home : Research : Red Tide : HAB Archive : Historical Florida HAB Events : Red Tide in Northwest Florida 1999 

# Red Tide in Northwest Florida 1999 Page 1 of 3 Red Tide in Northwest Florida

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- 1999/very low to medium October 4-8 St. Andrew Bay

Choctawhatchee Bay Pensacola Bay very low very low to low very low

October 11- 14 St. Joseph Bay very low SHAs opened in Escambia County October 18- 22 Alabama-Florida state

line very low Dead dolphins in Bay County November 5 West end of

Choctawhatchee Bay low to high SHAs closed in Choctawhatchee Bay until early January 2000

November 8 West end of

Choctawhatchee Bay medium

November 15-16 West end of

Choctawhatchee Bay low to medium
November 22-23 West end of

Choctawhatchee Bay Santa Rosa Sound medium very low

November 30- December 2 Eastern Santa Rosa Sound West end of Choctawhatchee Bay low to medium low to medium

December 7- 8 Choctawhatchee Bay low to medium
December 13 Choctawhatchee Bay low to medium
December 27 Mouth of

Choctawhatchee Bay low to medium SHA = shellfish harvesting area Key for Results: Karenia brevis

cells/liter Possible Effects
VERY LOW < 10,000 Continued shellfish harvesting ban and possible respiratory irritation LOW < 100,000 Respiratory irritation and maybe fish kills
MEDIUM 100,000 to <

1,000,000 Respiratory irritation and probable fish

kills HIGH > 1,000,000 All of the above plus water discoloration 

# Page 2 of 3 Red Tide in Northwest Florida

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# Page 3 of 3 Red Tide in Northwest Florida

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