2025-12-01 00:11:48,141 - satellite_download_logger - ERROR - Could not save metadata for LANDSAT/LC08/C02/T1_TOA/LC08_074091_20250926 that failed. Failed to open the image file data/nzd0478/L8/ms/2025-09-26-22-14-26_L8_nzd0478_ms.tif 2025-12-01 00:11:52,672 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC08/C02/T1_TOA/LC08_074091_20251012 as 2025-10-12-22-14-29_L8_nzd0478_ms.tif 2025-12-01 00:11:56,989 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC08/C02/T1_TOA/LC08_074091_20251028 as 2025-10-28-22-14-29_L8_nzd0478_ms.tif 2025-12-01 00:12:00,321 - satellite_download_logger - ERROR - Could not save metadata for LANDSAT/LC08/C02/T1_TOA/LC08_074092_20250926 that failed. Failed to open the image file data/nzd0478/L8/ms/2025-09-26-22-14-50_L8_nzd0478_ms.tif 2025-12-01 00:12:05,498 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC08/C02/T1_TOA/LC08_074092_20251028 as 2025-10-28-22-14-53_L8_nzd0478_ms.tif 2025-12-01 00:12:09,750 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC08/C02/T1_TOA/LC08_075091_20251019 as 2025-10-19-22-20-38_L8_nzd0478_ms.tif 2025-12-01 00:12:15,081 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC08/C02/T1_TOA/LC08_075091_20251104 as 2025-11-04-22-20-41_L8_nzd0478_ms.tif 2025-12-01 00:12:19,420 - satellite_download_logger - ERROR - Could not save metadata for LANDSAT/LC09/C02/T1_TOA/LC09_074091_20251105 that failed. Failed to open the image file data/nzd0478/L9/ms/2025-11-05-22-14-34_L9_nzd0478_ms.tif 2025-12-01 00:12:23,586 - satellite_download_logger - ERROR - Could not save metadata for LANDSAT/LC09/C02/T1_TOA/LC09_074092_20251105 that failed. Failed to open the image file data/nzd0478/L9/ms/2025-11-05-22-14-58_L9_nzd0478_ms.tif 2025-12-01 00:12:27,769 - satellite_download_logger - ERROR - Could not save metadata for LANDSAT/LC09/C02/T1_TOA/LC09_074092_20251121 that failed. Failed to open the image file data/nzd0478/L9/ms/2025-11-21-22-14-55_L9_nzd0478_ms.tif 2025-12-01 00:12:32,091 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC09/C02/T1_TOA/LC09_075091_20251027 as 2025-10-27-22-20-40_L9_nzd0478_ms.tif 2025-12-01 00:12:32,180 - satellite_download_logger - INFO - Please read the following information carefully: 2025-12-01 00:12:32,185 - satellite_download_logger - INFO - find_wl_contours2: A method for extracting shorelines that uses the sand water interface detected with the model to refine the threshold that's used to detect shorelines . - This is the default method used when there are enough sand pixels within the reference shoreline buffer. 2025-12-01 00:12:32,185 - satellite_download_logger - INFO - find_wl_contours1: This shoreline extraction method uses a threshold to differentiate between water and land pixels in images, relying on Modified Normalized Difference Water Index (MNDWI) values. However, it may inaccurately classify snow and ice as water, posing a limitation in certain environments. - This is only used when not enough sand pixels are detected within the reference shoreline buffer. 2025-12-01 00:12:32,185 - satellite_download_logger - INFO - --------------------------------------------------------------------------------------------------------------------- 2025-12-01 00:12:32,187 - satellite_download_logger - INFO - Extracting shorelines for L5 Minimum Shoreline Length: 500 2025-12-01 00:12:32,192 - satellite_download_logger - INFO - WARNING: CoastSat has hard-coded the value for the minimum shoreline length for L7 to 200 2025-12-01 00:12:32,192 - satellite_download_logger - INFO - Extracting shorelines for L7 Minimum Shoreline Length: 200 2025-12-01 00:12:32,194 - satellite_download_logger - INFO - Extracting shorelines for L8 Minimum Shoreline Length: 500 2025-12-01 00:12:32,204 - satellite_download_logger - WARNING - L8 2025-10-12-22-14-29: Skipped due to cloud cover 19.52% > threshold 10.00% 2025-12-01 00:12:32,217 - satellite_download_logger - INFO - L8 2025-10-19-22-20-38 cloud cover : 0.00% 2025-12-01 00:12:32,314 - satellite_download_logger - INFO - L8 2025-10-19-22-20-38: sand: 0.00% ,whitewater: 0.00% ,water: 0.99% 2025-12-01 00:12:32,314 - satellite_download_logger - INFO - L8 2025-10-19-22-20-38: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-12-01 00:12:32,317 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 11 shorelines. Number of shorelines after filtering shorelines: 1 shorelines 2025-12-01 00:12:32,317 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 118 2025-12-01 00:12:32,317 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 118 2025-12-01 00:12:32,317 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 118 2025-12-01 00:12:32,317 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 118 2025-12-01 00:12:32,644 - satellite_download_logger - INFO - L8 2025-10-28-22-14-29 cloud cover : 0.00% 2025-12-01 00:12:32,679 - satellite_download_logger - INFO - L8 2025-10-28-22-14-29: sand: 0.00% ,whitewater: 0.32% ,water: 56.67% 2025-12-01 00:12:32,679 - satellite_download_logger - INFO - L8 2025-10-28-22-14-29: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-12-01 00:12:32,681 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 2 shorelines. Number of shorelines after filtering shorelines: 1 shorelines 2025-12-01 00:12:32,681 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 105 2025-12-01 00:12:32,681 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 105 2025-12-01 00:12:32,681 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 105 2025-12-01 00:12:32,681 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 105 2025-12-01 00:12:32,989 - satellite_download_logger - INFO - L8 2025-10-28-22-14-53 cloud cover : 0.00% 2025-12-01 00:12:33,022 - satellite_download_logger - INFO - L8 2025-10-28-22-14-53: sand: 0.00% ,whitewater: 0.40% ,water: 56.51% 2025-12-01 00:12:33,023 - satellite_download_logger - INFO - L8 2025-10-28-22-14-53: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-12-01 00:12:33,024 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 2 shorelines. Number of shorelines after filtering shorelines: 1 shorelines 2025-12-01 00:12:33,024 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 105 2025-12-01 00:12:33,025 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 105 2025-12-01 00:12:33,025 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 105 2025-12-01 00:12:33,025 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 105 2025-12-01 00:12:33,247 - satellite_download_logger - INFO - L8 2025-11-04-22-20-41 cloud cover : 0.00% 2025-12-01 00:12:33,482 - satellite_download_logger - INFO - L8 2025-11-04-22-20-41: sand: 0.00% ,whitewater: 0.00% ,water: 0.00% 2025-12-01 00:12:33,489 - satellite_download_logger - INFO - L8 2025-11-04-22-20-41: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-12-01 00:12:33,495 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 63 shorelines. Number of shorelines after filtering shorelines: 3 shorelines 2025-12-01 00:12:33,495 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 228 2025-12-01 00:12:33,495 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 228 2025-12-01 00:12:33,495 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 228 2025-12-01 00:12:33,495 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 228 2025-12-01 00:12:33,762 - satellite_download_logger - INFO - Extracting shorelines for L9 Minimum Shoreline Length: 500 2025-12-01 00:12:33,786 - satellite_download_logger - INFO - L9 2025-10-11-22-20-45 cloud cover : 0.00% 2025-12-01 00:12:33,835 - satellite_download_logger - INFO - L9 2025-10-11-22-20-45: sand: 0.00% ,whitewater: 0.00% ,water: 1.59% 2025-12-01 00:12:33,836 - satellite_download_logger - INFO - L9 2025-10-11-22-20-45: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-12-01 00:12:33,837 - satellite_download_logger - ERROR - L9 2025-10-11-22-20-45: Could not map shoreline due to error no valid pixels found in reference shoreline buffer. Traceback (most recent call last): File "/home/ubuntu/.local/lib/python3.12/site-packages/coastsat/SDS_shoreline.py", line 1061, in extract_shorelines shoreline, t_mndwi = find_shoreline_optical( ^^^^^^^^^^^^^^^^^^^^^^^ File "/home/ubuntu/.local/lib/python3.12/site-packages/coastsat/SDS_shoreline.py", line 216, in find_shoreline_optical contours_mwi, t_mndwi = find_wl_contours1(im_mndwi, cloud_mask, im_ref_buffer) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/ubuntu/.local/lib/python3.12/site-packages/coastsat/SDS_shoreline.py", line 1426, in find_wl_contours1 raise ValueError("no valid pixels found in reference shoreline buffer.") ValueError: no valid pixels found in reference shoreline buffer. 2025-12-01 00:12:33,842 - satellite_download_logger - WARNING - L9 2025-10-27-22-20-40: Skipped due to cloud cover 27.80% > threshold 10.00%