Spills · mystery_substance

Mystery slick, near GI-47c; gom, louisiana coast

NOAAORR-7909

issued: 2008-10-18 00:00Z
status: cancelled 2008-11-01 00:00Z
self-cancels: 2008-11-01 00:00Z
authority: NOAA OR&R
sea: Gulf of Mexico
position: 28.998, -89.875
source: incidentnews · first seen 2026-09-03 15:09Z

Original warning text

Mystery Slick, Near GI-47c; GOM, Louisiana Coast.
GOM, Louisiana Coast.
1. The USCG is responding to an observed slick 20 miles of the Louisiana Coast near Grand Isle. There is no identified source at present.
2. THREAT: OIL. TAGS: MYSTERY SUBSTANCE.
3. POSITION 28.998N 089.875W. NOAA INCIDENTNEWS 7909: https://incidentnews.noaa.gov/incident/7909

This area · spills & pollution incidents

1047 within 180 nm since 1970 · 35 in the last 12 months · 2 in force now

Crude oil spill and in-situ burn at tpic; south pass 24, pilottown, louisiana2026-08-26
8X38+5H dauphin island, al, USA2026-08-24
Mystery sheen at south pass 29; port eads, louisiana2026-08-13
Wcc oil spill, main pass 21; breton sound, louisiana2026-06-11
Tpic oil spill, main pass 81; gulf of america2026-06-10
Oil spill from out-of-service tank at tpic main pass 69 facility; louisiana2026-05-19

Season · when spills & pollution incidents happen here

month of issue, all years in the archive

Timeline · 41 messages since 2008-02-12 · closed 2008-12-16

Lake raccourci well #2; terrebone parish, la2008-02-12 → 2008-02-26
South pelto, la2008-02-15 → 2008-02-29
Barartaria bay, la2008-03-02 → 2008-03-16
Grand isle 47C; near se louisiana coast, gulf of mexico2008-03-02 → 2008-03-16
Bayou chaland, grand terre island, la2008-03-09 → 2008-03-23
On march 17, 2008, the noaa ssc was notified of a fluosilicic acid release at the stolt-haven facility…2008-03-17 → 2008-03-31
Salvador state wma, louisiana2008-04-14 → 2008-04-28
Two patches of crude oil were reported by msu houma in a small system of channels between lake long and the…2008-04-18 → 2008-05-02
Mystery sheen; south timbalier island block 130, lousiana2008-04-24 → 2008-05-08
Hillcorp tank battery 25; timbalier bay, la2008-05-28 → 2008-06-11
Block 237 platform; eugene island, la2008-05-29 → 2008-06-12
Post-hurricane katrina grand isle 47C, ; gulf of mexico, la2008-06-03 → 2008-06-17
Ship shoal block 7 pipeline release; gulf of mexico, la2008-06-10 → 2008-06-24
Loop, gulf of mexico, la2008-06-23 → 2008-07-07
Mystery slick, nrc 875386; gulf of mexico, off grand isle, la2008-06-26 → 2008-07-10
Mystery sheen, ship shoal 182; gulf of mexico, offshore la2008-06-27 → 2008-07-11
Off la coast2008-06-30 → 2008-07-14
Mystery sheen, west delta 90; gulf of mexico2008-07-08 → 2008-07-22
West delta 55; mississippi river delta, la2008-07-25 → 2008-08-08
Offshore of belle pass2008-08-04 → 2008-08-18
Louisiana coastal zone2008-08-31 → 2008-09-14
Nw breton sound, la2008-09-03 → 2008-09-17
Barataria bay, la2008-09-03 → 2008-09-17
Near galliano, la2008-09-17 → 2008-10-01
Golden medow, la2008-09-26 → 2008-10-10
Mississippi delta, la2008-10-04 → 2008-10-18
Mississippi river, new orleans, la2008-10-05 → 2008-10-19
At 0905 pdt, erd was notified of an ongoing release of oleum from a tank at a pcs nitrogen facility in…2008-10-09 → 2008-10-23
Gom, louisiana coast2008-10-11 → 2008-10-25
Mystery slick, near GI-47c; gom, louisiana coast this message2008-10-18 → 2008-11-01
Gulf of mexico, la2008-10-28 → 2008-11-11
New orleans, la2008-10-28 → 2008-11-11
Louisiana mystery sheen; 15 miles off barataria bay2008-10-29 → 2008-11-12
Mississippi river, new orleans, la2008-11-03 → 2008-11-17
Mississippi river, geismer, la2008-11-04 → 2008-11-18
Turtle bay, south la2008-11-06 → 2008-11-20
Gom, mississippi delta, la2008-11-06 → 2008-11-20
Grand isle block 54 oil spill; gulf of mexico, la2008-11-08 → 2008-11-22
Sw pass jetties, la2008-11-12 → 2008-11-26
Hopedale canal, south la2008-11-13 → 2008-11-27
South pass, mississippi delta, la2008-12-02 → 2008-12-16

joined by proximity

Nearby now · within 120 nm

Crude oil spill and in-situ burn at tpic; south pass 24, pilottown, louisianaSpills · 31.4 nm
Uscg remote communication facility new orleans 29-53.00N 089-57.00W mf and hf dsc off airNav aids · 53.3 nm
Survey operations in progress until 15 sep by M/V island pride, M/V sanco swift and M/V olympic artemis in…Surveys · 112.6 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 →

Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.