2025-12-01 02:35:18,246 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC08/C02/T1_TOA/LC08_193032_20251014 as 2025-10-14-10-06-24_L8_sar0647_ms.tif
2025-12-01 02:35:22,466 - satellite_download_logger - ERROR - Could not save metadata for LANDSAT/LC09/C02/T1_TOA/LC09_193032_20251107 that failed.
Failed to open the image file data/sar0647/L9/ms/2025-11-07-10-06-30_L9_sar0647_ms.tif
2025-12-01 02:35:26,769 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC09/C02/T1_TOA/LC09_193032_20251123 as 2025-11-23-10-06-27_L9_sar0647_ms.tif
2025-12-01 02:35:31,149 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC09/C02/T1_TOA/LC09_193033_20251123 as 2025-11-23-10-06-51_L9_sar0647_ms.tif
2025-12-01 02:35:31,218 - satellite_download_logger - INFO - Please read the following information carefully:

2025-12-01 02:35:31,218 - 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 02:35:31,218 - 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 02:35:31,218 - satellite_download_logger - INFO - ---------------------------------------------------------------------------------------------------------------------
2025-12-01 02:35:31,222 - satellite_download_logger - INFO - Extracting shorelines for L5 Minimum Shoreline Length: 500


2025-12-01 02:35:31,225 - satellite_download_logger - INFO - WARNING: CoastSat has hard-coded the value for the minimum shoreline length for L7 to 200


2025-12-01 02:35:31,225 - satellite_download_logger - INFO - Extracting shorelines for L7 Minimum Shoreline Length: 200


2025-12-01 02:35:31,229 - satellite_download_logger - INFO - Extracting shorelines for L8 Minimum Shoreline Length: 500


2025-12-01 02:35:31,236 - satellite_download_logger - WARNING - L8 2025-10-14-10-06-24: Skipped due to cloud cover 82.07% > threshold 10.00%
2025-12-01 02:35:31,239 - satellite_download_logger - INFO - Extracting shorelines for L9 Minimum Shoreline Length: 500


2025-12-01 02:35:31,245 - satellite_download_logger - INFO - L9 2025-11-23-10-06-27 cloud cover : 0.00%
2025-12-01 02:35:31,274 - satellite_download_logger - INFO - L9 2025-11-23-10-06-27: sand: 0.00% ,whitewater: 0.00% ,water: 53.97%
2025-12-01 02:35:31,275 - satellite_download_logger - INFO - L9 2025-11-23-10-06-27: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1
2025-12-01 02:35:31,276 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 2 shorelines. Number of shorelines after filtering shorelines: 1 shorelines
2025-12-01 02:35:31,276 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 102
2025-12-01 02:35:31,276 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 102
2025-12-01 02:35:31,276 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 102
2025-12-01 02:35:31,276 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 102
2025-12-01 02:35:31,545 - satellite_download_logger - INFO - L9 2025-11-23-10-06-51 cloud cover : 0.00%
2025-12-01 02:35:31,554 - satellite_download_logger - INFO - L9 2025-11-23-10-06-51: sand: 0.00% ,whitewater: 0.00% ,water: 10.00%
2025-12-01 02:35:31,554 - satellite_download_logger - INFO - L9 2025-11-23-10-06-51: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1
2025-12-01 02:35:31,557 - satellite_download_logger - ERROR - L9 2025-11-23-10-06-51: 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.