Florida Fish & Wildlife Red Tide Status: Friday, January 20, 2016
FWC released the Red Tide Status Report as of this afternoon.
Florida Fish & Wildlife Conservation Commission red tide bulletin at 3:40 PM 1/20/2017.
Red Tide Status (January 20, 2017)
A bloom of the Florida red tide organism, Karenia brevis, persists in Southwest Florida with patches observed from Pinellas to Lee counties.
Over the past week, Karenia brevis was observed at background to low concentrations in nine samples collected from Pinellas County; background to medium concentrations in five samples collected from Hillsborough County; background to medium concentrations in twenty samples collected from Manatee County; background to high concentrations in thirty samples collected from Sarasota County; background concentrations in four samples collected from Charlotte County; and background to very low concentrations in five samples collected from Lee County.
Additional samples collected throughout Florida over the past week did not contain K. brevis.
Fish kills were reported along Pinellas County on 1/12, 1/13, 1/15, and 1/17, Lee County on 1/13, and Manatee and Sarasota counties on 1/19. Respiratory irritation was reported along Lee County on 1/13, and Manatee and Sarasota counties on 1/19. Forecasts for Southwest Florida by the USF-FWC Collaboration for Prediction of Red Tides predict minimal net movement of surface waters, and onshore, southern movement of subsurface waters between southern Pinellas and northern Monroe counties over the next 3 days.
Red tide is a naturally-occurring microscopic alga that has been documented along Florida’s Gulf Coast since the 1840’s and occurs nearly every year. Blooms, or higher-than-normal concentrations, of the Florida red tide alga, Karenia brevis, frequently occur in the Gulf of Mexico at this time of year (late summer or early fall). Red tide begins in the Gulf of Mexico 10 to 40 miles offshore and can be transported inshore by winds and currents.”
Key for Results
|Description||Karenia breviscells/liter||Possible Effects (K. brevis only)|
|NOT PRESENT – BACKGROUND||background levels of 1,000 cells or less||None anticipated|
|VERY LOW||>1,000 to 10,000||Possible respiratory irritation; shellfish harvesting closures > 5,000 cells/L|
|LOW||>10,000 to 100,000||Respiratory irritation, possible fish kills and bloom chlorophyll probably detected by satellites at upper limits|
|MEDIUM||>100,000 to 1,000,000||Respiratory irritation and probable fish kills|
|HIGH||>1,000,000||As above plus discoloration|
For more information, please see FWC.