Spills · mystery_substance

Grand isle, la

Mystery Sheen; Grand Isle, la · NOAAORR-8396

issued: 2012-01-20 00:00Z
status: cancelled 2012-02-03 00:00Z
self-cancels: 2012-02-03 00:00Z
authority: NOAA OR&R
sea: Gulf of Mexico
position: 29.043, -90.119
source: incidentnews · first seen 2026-09-03 15:09Z

Original warning text

Mystery Sheen; Grand Isle, LA.
Grand Isle, LA.
1. On Friday, 20 Jan, at 13:30 USCG MSU Morgan City contacted NOAA SSC in regards to a mystery sheen reported south of Grand Isle, LA. Sheen is reported being 4.5 miles offshore in Grand Isle Block 37 and approximately 6 mi by 1 mi in size, traveling in a north-east direction along the shore. Chemistry of sheen is not known and source of sheen is not known. USCG request trajectory report to determine shoreline impact.
2. THREAT: OIL. COMMODITY: UNKNOWN. TAGS: MYSTERY SUBSTANCE.
3. POSITION 29.043N 090.119W. NOAA INCIDENTNEWS 8396: https://incidentnews.noaa.gov/incident/8396

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Season · when spills & pollution incidents happen here

month of issue, all years in the archive

Timeline · 9 messages since 2012-01-20 · closed 2012-06-12

Grand isle, la this message2012-01-20 → 2012-02-03
On 02FEB12, uscg contacted noaa ssc about a ruptured natural gas pipeline 7nm south of timbalier island in…2012-02-02 → 2012-02-16
Near grand isle, la2012-03-14 → 2012-03-28
Near grand isle, la2012-03-17 → 2012-03-31
Timbalier bay, la2012-04-18 → 2012-05-02
Mystery sheen; south timbalier block 23, la2012-04-29 → 2012-05-13
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Mystery sheen west delta 117; 28nmi se of west side ofmiss r. delta, la2012-05-18 → 2012-06-01
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