Spills · pipeline
Mystery sheen; south marsh island block 239, la
NOAAORR-8391
- issued
- 2012-01-06 00:00Z
- status
- cancelled 2012-01-20 00:00Z
- self-cancels
- 2012-01-20 00:00Z
- authority
- NOAA OR&R
- sea
- Gulf of Mexico
- position
- 29.319, -91.916
- source
- incidentnews · first seen 2026-09-03 15:09Z
Original warning text
Mystery Sheen; South Marsh Island Block 239, LA. South Marsh Island Block 239, LA. 1. USCG MSU Morgan City, LA contacted the NOAA SSC about a sheen from a well located at 29 deg 19.15 min N 091 deg 54.94 min W that produced a silvery sheen of 4 miles by 20 feet in the South Marsh Island Block 239. The wellhead is secure and not releasing any more oil. The sheen is presumed to be moving with the wind in a northerly direction. Quantity not known. USCG is looking for a trajectory to determine if shoreline impacts can be expected. 2. THREAT: OIL. COMMODITY: CRUDE OIL. MAXIMUM POTENTIAL RELEASE: 1 GALLONS. TAGS: PIPELINE. 3. POSITION 29.319N 091.916W. NOAA INCIDENTNEWS 8391: https://incidentnews.noaa.gov/incident/8391
This area · spills & pollution incidents
1301 within 180 nm since 1970 · 41 in the last 12 months · 2 in force now
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- Crude oil spill and in-situ burn at tpic; south pass 24, pilottown, louisiana2026-08-26
- Intermittent oil sheen; flower garden banks national marine sanctuary, bright bank2026-08-25
- Mystery sheen at south pass 29; port eads, louisiana2026-08-13
- Release of aluminum phosphide in M/V thorco liva; port arthur, texas2026-07-28
- Mystery oiled shoreline at holly beach; cameron parish, louisiana2026-07-10
- Johnson bayou, la2026-06-17
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month of issue, all years in the archive
Timeline · 3 messages since 2012-01-06 · closed 2012-03-12
- Mystery sheen; south marsh island block 239, la this message2012-01-06 → 2012-01-20
- Condensate sheen; south marsh block 236, la2012-02-15 → 2012-02-29
- Mystery sheen; south marsh island block 223, la2012-02-27 → 2012-03-12
joined by proximity
Nearby now · within 120 nm
Worldwide now
8 spills & pollution incidents in force · see all
Spills
Oil and chemical spills, groundings and vessel casualties with a pollution threat: NOAA IncidentNews responses since 1957, and spill-response areas broadcast as navigational warnings. All current spills & pollution incidents →
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