REPORT DATE: 08-12-2018
REPORT TIME: 1120 UTC
REGION: PACIFIC
SUB REGION: ALASKA
AREA/BLOCK: Gulf of Alaska  6980 
IMAGE DATE: 08-12-2018
IMAGE TIME: 0302 UTC
DATA SOURCE: SENTINEL1B 
MODE: Interferometric Wide (IW) VV
RESOLUTION: 5x20 meter
LOCATION: 59°10'56" N/141°34'16" W
AREA: 3.89 square kilometers (Updated 05/26/2020)
CONFIDENCE: Medium
REMARKS: Possible oil was observed in satellite imagery. This anomaly is unconfirmed as oil. It was located approximately 50 NMI due south of Icy Bay in mainland Alaska. A suspected vessel target was inferred, though not directly connected to the feature. The anomaly was 5.5 NMI long by 0.3 NMI wide, widened with increasing distance, and exhibited good contrast against the ocean background. Possible feathering was observed on the north end, consistent with satellite derived winds from the west at 10 knots. 

UNCERTAINTIES: The slick was wider than typically observed with oil discharges, and may be due to fishing activity. Additionally, there were several nautral looking surface anomalies in the immediate vicinity, but they were less well defined and had diffuse edges. It's possible that all anomalies are related and the result of fishing activity.  

ANALYST: RAMIREZ
Maps and shapefiles can be accessed at: www.ospo.noaa.gov/Products/ocean/marinepollution/

ERMA: https://erma.noaa.gov/arctic/erma.html#/layers=1+46668&x=-141.54846&y=59.238666&z=11&panel=layer

For further information on oil spill response and assessment go to: https://response.restoration.noaa.gov/oil-and-chemical-spills/oil-spills

If you would like to share any feedback about this report or have questions, please contact the operational analyst at (301) 683-1403 or send to oceanmap@noaa.gov. Email alerts are available only for federal and state government officials involved in response efforts. Requests to be added to the email alerts should also be sent to oceanmap@noaa.gov. Please allow up to 2 business days to process the request.